JP6631269B2 - Decorative member, display device, and method of manufacturing organic electroluminescence display device - Google Patents

Description

  The present invention relates to a decorative member having a transparent base material having flexibility and a decorative portion arranged on the transparent base material, a display device using the same, and a method of manufacturing an organic electroluminescent display device.

  In recent years, with the development of display devices, demand for flat panel display devices such as liquid crystal display devices and organic EL display devices has been increasing. In recent years, in addition to televisions and personal computers, multifunctional terminals such as smartphones and tablet terminals have become popular, and the market for flat panel display devices has been expanding. In such a situation, research on each member constituting the flat panel display device has been actively conducted.

  A member constituting the flat panel display device can be obtained by, for example, laminating a predetermined functional layer on a glass substrate. When such a member is used, a rigid flat panel display device is obtained. When the flat panel display device is rigid, for example, it is difficult to bend the flat panel display device, and there is a problem that its use is limited. Therefore, for example, a flexible display device using a member in which a predetermined functional layer is laminated on a transparent base material having flexibility has been proposed.

  Since the flexible display device can be freely deformed, for example, a rollable (rewindable) mobile display device can be realized, and there is an advantage that a display device more suitable for mobile can be obtained. Further, the flexible display device can be manufactured by a continuous process using, for example, a long film, and has an advantage that the productivity is excellent.

By the way, in current display devices, a front panel protection base material may be arranged on the front surface of the display panel. Such a front plate protection base material is often used in, for example, a mobile phone having a touch panel function such as a smartphone.
For example, Patent Document 1 discloses a front plate protection base material 1 'in which a white decorative portion 2a' is disposed on a base material 3 ', as shown in FIG. In addition, for example, Patent Document 2 discloses a front plate protection base material 1 'in which a white decorative portion 2a' and a backing layer 2b 'are arranged on a base material 3', as shown in FIG. . By providing the backing layer on the surface of the white decorative portion opposite to the viewing side, the light shielding properties of the white decorative portion can be improved.

JP 2013-200450 A JP 2015-14733 A

  As the use of flexible display devices has expanded, the flexibility required for flexible display devices has increased. Therefore, the front panel protection base material disposed on the surface of such a flexible display device is also required to have high flexibility so as to follow the flexible display device.

  By the way, a decorative portion exhibiting a predetermined color tone can be arranged on the front plate protection base material in order to improve the appearance of the display device. Specifically, the decorative portion is a member for hiding the non-display area in the display device from the viewing side of the display device, and can mainly hide wiring, control circuits, and the like arranged in the non-display area. Therefore, the decorative part is required to have a light shielding property such that the wiring, the control circuit, and the like are not visible from the viewing side of the display device.

  The present invention has been made in view of the above circumstances, and can suppress the occurrence of peeling or cracking of the decorative portion when bent, and can impart a desired light shielding property to the decorative portion. It is an object of the present invention to provide a decorative member that is simple.

  The inventor of the present invention can suppress the occurrence of peeling or cracking of the decorative portion when the decorative member is bent, and can provide the decorative portion with a desired light shielding property. Research was conducted on components. As a result, in order to suppress the occurrence of peeling or cracking of the decorative portion when the decorative member is bent (hereinafter, sometimes referred to as having bending resistance), the decorative portion should be made thinner. It was found that it was necessary to plan.

However, it has been found that it is difficult to achieve both the light-shielding property and the bending resistance of the decorative part when the decorative part is made thinner while having the bending resistance.
Specifically, the decorating portion of the decorating member usually contains a coloring pigment exhibiting a predetermined color tone. Therefore, in order to impart a desired light-shielding property to the decorative portion, the content of the coloring pigment in the decorative portion needs to be a predetermined amount. Here, conventionally, since the content (concentration) of the color pigment in the decorative portion is not so high, the content of the main component (resin binder) for dispersing the color pigment is high, and as a result, the thickness of the decorative portion Was getting thicker.
On the other hand, if a desired light-shielding property is imparted to the decorative portion, and only the concentration of the coloring pigment in the decorative portion is increased in an attempt to reduce the thickness, the content of the resin binder in the decorative portion decreases. For example, the present inventors have found a problem that peeling or cracking easily occurs when the decorative portion is bent, that is, the bending resistance is deteriorated.

  The inventors of the present invention have conducted intensive studies in order to solve the above-mentioned problems, and as a result, when the decorative member was bent, the decorative portion was thinned to such an extent that the occurrence of peeling or cracking could be suppressed. The present inventors have found the content (pigment concentration) of the coloring pigment in the decorative portion, which can provide the desired light-shielding property to the decorative portion, and have completed the present invention.

  That is, the present invention is a decorative member having a transparent substrate having flexibility and a decorative portion disposed on the transparent substrate, wherein the decorative portion is disposed on the transparent substrate. A white decorative portion, and a black decorative portion disposed on the white decorative portion, the white decorative portion is a cured product containing a white pigment in a resin binder containing a photosensitive resin Wherein the pigment concentration of the white pigment with respect to the total solid content of the white decorative portion is in the range of 50% by mass to 85% by mass, and the total light transmittance of the white decorative portion is 20% or less; The black decorative portion is a cured product in which a black pigment is contained in a resin binder containing a photosensitive resin, and the pigment concentration of the black pigment with respect to the total solid content of the black decorative portion is 40% by mass to 85% by mass. %, And the total light transmittance of the decorative portion is 0.02% or less. Providing a decorative member, wherein.

  According to the present invention, the pigment concentration of the white pigment contained in the white decorating portion and the black pigment contained in the black decorating portion is within a predetermined range. When the decorative member is used for a display device, the decorative portion hides wiring and the like, and an excellent appearance can be obtained. Moreover, when the decorative member is bent, peeling and cracking of the decorative portion can be suppressed.

  In the present invention, the thickness of the decorative portion is in the range of 8 μm to 20 μm, and after performing the bending durability test with a bending radius of 3 mm 100,000 times or more, there is no crack or peeling of the decorative portion. preferable.

  Further, the present invention is a decorative member having a transparent substrate having flexibility and a decorative portion disposed on the transparent substrate, wherein the decorative portion is disposed on the transparent substrate. A white decorative portion, and a black decorative portion disposed on the white decorative portion, wherein the thickness of the decorative portion is in the range of 8 μm to 20 μm, and the entirety of the white decorative portion A decorative member having a light transmittance of 20% or less and a total light transmittance of the decorative portion of 0.02% or less is provided.

  According to the present invention, since the thickness of the decorative portion is within the predetermined range, peeling and cracking of the decorative portion when the decorative member is bent can be suppressed. In addition, since the white decorating portion and the black decorating portion have a predetermined optical density, the decorating portion can have a desired light-shielding property. The wiring and the like are hidden by the portion, and an excellent appearance can be obtained.

  In the present invention, it is preferable that after the bending durability test with a bending radius of 3 mm is performed 100,000 times or more, the decorative portion does not crack or peel off.

  In the present invention, it is preferable that a black matrix having a plurality of openings is provided in a display area defined by the decorative section, and the black matrix be formed of the same material as the black decorative section. The black decorative portion and the black matrix can be simultaneously formed.

  In the present invention, the opening preferably has a colored portion. Since the decorating member and the color filter of the present invention can be integrated, the thickness of the display device can be reduced as compared with the case where the decorating member and the color filter are provided separately.

  In the present invention, it is preferable that a sensor electrode capable of detecting the position of the touch panel is provided on the black matrix. Since the decorative member and the sensor electrode of the present invention can be integrated, the thickness of the display device can be reduced as compared with the case where the decorative member and the sensor electrode base material are provided separately.

  In the present invention, it is preferable that a circularly polarizing plate is provided in the display area defined by the decoration section. When the decorative member of the present invention has a circularly polarizing plate, a high-performance display device can be obtained.

  In the present invention, it is preferable that a black matrix having a plurality of openings is provided on the circularly polarizing plate, and a sensor electrode capable of detecting the position of the touch panel is provided on the black matrix.

  Further, the present invention provides a display device comprising the above-described decorative member and a display panel.

  ADVANTAGE OF THE INVENTION According to this invention, when a display apparatus is bent, peeling of a decoration part and generation | occurrence | production of a crack can be suppressed. In addition, since the decorating portion has a predetermined light-shielding property, the decorating portion hides wiring and the like, and an excellent appearance can be obtained.

Still further, the present invention provides a decorative member preparing step of preparing a decorative member which is adhered on a first glass substrate and has a decorative portion formed on a first transparent substrate. A sensor electrode substrate laminating step of laminating a sensor electrode substrate having a sensor electrode capable of detecting the position of a touch panel on a member, and an organic electroluminescent substrate adhered on a second glass substrate An organic electroluminescent base material preparing step of preparing the sensor electrode base material laminated on the decorative member, and a bonding step of bonding the organic electroluminescent base material, the decorative member According to another aspect of the present invention, there is provided a method of manufacturing an organic electroluminescent display device, which is the decorative member described above.
Hereinafter, organic electroluminescence may be abbreviated as organic EL in some cases.

  ADVANTAGE OF THE INVENTION According to this invention, the decoration member and the sensor electrode base material stuck on the 1st glass base material, and the bonding which sticks the organic EL base material stuck on the 2nd glass base material By having the step, shrinkage of each base material due to heat or the like can be suppressed, and highly accurate alignment can be performed. In addition, it is necessary to provide a support base material or the like on the sensor electrode base material by having a sensor electrode base material laminating step of directly laminating the sensor electrode base material on the decorative member attached to the first glass base material. And the thickness as the organic EL display device can be reduced, and high flexibility can be realized.

  ADVANTAGE OF THE INVENTION This invention can suppress the peeling and generation | occurrence | production of a decoration part when bending, and can also be set as the decoration member which can provide a desired light-shielding property to a decoration part. This has the effect.

It is the schematic plan view and schematic sectional drawing which show an example of the decoration member of this invention. It is an outline sectional view showing other examples of a decorative member of the present invention. It is an outline sectional view showing other examples of a decorative member of the present invention. It is an outline sectional view showing other examples of a decorative member of the present invention. It is an outline sectional view showing other examples of a decorative member of the present invention. It is a schematic process drawing showing an example of the manufacturing method of the decoration member of the present invention. It is a schematic process drawing showing other examples of a manufacturing method of a decorative member of the present invention. It is an outline sectional view showing other examples of a decorative member of the present invention. It is an outline sectional view showing other examples of a decorative member of the present invention. It is an outline sectional view showing other examples of a decorative member of the present invention. It is an outline sectional view showing other examples of a decorative member of the present invention. FIG. 1 is a schematic plan view showing one example of a display device of the present invention. It is a schematic process drawing showing an example of a manufacturing method of an organic EL display of the present invention. It is a schematic sectional drawing which shows an example of the conventional decoration member. It is an outline sectional view showing other examples of the conventional decoration member.

  Hereinafter, a method for manufacturing a decorative member, a display device, and an organic EL display device of the present invention will be described.

A. Decorating member The decorating member of the present invention is a decorating member having a transparent base material having flexibility and a decorating portion arranged on the transparent base material, wherein the decorating portion includes the transparent member. It has a white decorating portion arranged on the base material, and a black decorating portion arranged on the white decorating portion, and the white decorating portion has a white pigment in a resin binder containing a photosensitive resin. It is a cured product contained, and the pigment concentration of the white pigment with respect to the total solid content of the white decorative portion is in the range of 50% by mass to 85% by mass, and the total light transmittance of the white decorative portion is 20% by mass. % Or less, and the black decorative portion is a cured product in which a black pigment is contained in a resin binder containing a photosensitive resin, and the pigment concentration of the black pigment with respect to the total solid content of the black decorative portion is 40%. Mass% to 85 mass%, and the total light transmittance of the decorative portion is 0.02% or less. A member characterized by the following.

  Further, the decorative member of the present invention is a decorative member having a transparent base material having flexibility and a decorative part disposed on the transparent base material, wherein the decorative part is a transparent base material. A white decorating portion arranged on a material, and a black decorating portion arranged on the white decorating portion, wherein the thickness of the decorating portion is in a range of 8 μm to 20 μm, and The decorative member has a total light transmittance of 20% or less, and the decorative portion has a total light transmittance of 0.02% or less.

  The decorative member of the present invention will be described with reference to the drawings. FIG. 1A is a schematic plan view illustrating an example of the decorative member of the present invention, and FIG. 1B is a cross-sectional view taken along line AA of FIG. 1A. As shown in FIGS. 1A and 1B, a decorative member 1 of the present invention has a transparent base material 3 and a decorative part 2 arranged on the transparent base material 3. The decorative part 2 has a white decorative part 2a arranged on the transparent base material 3 and a black decorative part 2b arranged on the white decorative part 2a. Note that the display area D is defined by the decoration unit 2.

According to the present invention, since the pigment concentration of the white pigment contained in the white decorating portion and the pigment concentration of the black pigment contained in the black decorating portion are within the predetermined ranges, the light-shielding property and the resistance to light in the decorating portion are improved. Flexibility can be achieved at the same time. Therefore, when the decorating member of the present invention is used for a display device, the decorating portion can hide the wiring, the control circuit, and the like, and an excellent appearance can be obtained, and for example, the decorating portion is bent. In this case, the occurrence of peeling or cracking can be suppressed.
The following can be considered as the reason for this.
First, the inventors of the present invention have found that in order to impart bending resistance when the decorative member is bent, it is necessary to reduce the thickness of the decorative portion of the decorative member. Specifically, it has been found that when the decorative member is bent by making the decorative portion thinner, the decorative portion follows the transparent base material of the decorative member.
However, it has been found that it is difficult to impart a desired light-shielding property to the decorative portion when the decorative portion is made thinner. That is, conventionally, the content (concentration) of the coloring pigment in the decorative portion is not so high. Therefore, when the concentration of the coloring pigment is greatly increased in order to improve the light shielding property, the content of the main component (resin binder) for dispersing the coloring pigment also needs to be increased, and as a result, the decoration portion has There is a problem that the thickness is increased. On the other hand, if only the concentration of the color pigment is increased, there is a problem that the content of the resin binder in the decorative portion decreases, and the bending resistance decreases.
On the other hand, in the present invention, while exhibiting a bright white color, the pigment concentration range of the white pigment in which the decorative portion can be made thinner to the extent that excellent bending resistance can be exhibited while maintaining desired light-shielding properties. And a new pigment concentration range for black pigments, thereby completing the present invention. That is, in the present invention, when the pigment concentration of the white pigment and the pigment concentration of the black pigment are within the predetermined ranges, the decorating portion can hide the wiring, the control circuit, and the like, and obtain an excellent appearance. In addition to this, there is an effect that, when the decorative member is bent, peeling or cracking of the decorative portion from the transparent substrate can be suppressed.

  Further, according to the present invention, since the thickness of the decorative portion is within the predetermined range, when the decorative member is bent, peeling or cracking of the decorative portion from the transparent substrate is suppressed. be able to. In addition, since the decorative portion has a predetermined optical density, the decorative portion can have a desired light-shielding property. When the decorative member is used in a display device, the decorative portion hides wiring and the like. , Excellent appearance can be obtained.

  Hereinafter, the decorating part and the transparent substrate constituting the decorating member of the present invention will be described.

1. Decorating part The decorating part in the present invention is a member arranged on a transparent substrate and having a white decorating part and a black decorating part.
The white decorative portion in the present invention is a cured product in which a white pigment is contained in a resin binder containing a photosensitive resin, and the pigment concentration of the white pigment with respect to the total solid content of the white decorative portion is 50% by mass to 85%. % By mass, and the total light transmittance of the white decorative portion is 20% or less, and the black decorative portion is formed by curing a resin binder containing a photosensitive resin containing a black pigment. The pigment concentration of the black pigment with respect to the total solid content of the black decorative portion is in the range of 40% by mass to 85% by mass, and the total light transmittance of the decorative portion is 0.02% or less. (First mode).
In the present invention, the thickness of the decorative portion is in the range of 8 μm to 20 μm, the total light transmittance of the white decorative portion is 20% or less, and the total light transmittance of the decorative portion is 0.1%. 0% or less (second aspect).
Hereinafter, the decorating part in the present invention will be described separately in a first mode and a second mode.

(1) First Aspect In the present aspect, the white decorative part is a cured product in which a white pigment is contained in a resin binder containing a photosensitive resin, and the white pigment is a pigment based on the total solid content of the white decorative part. The concentration is in the range of 50% by mass to 85% by mass, the total light transmittance of the white decorating portion is 20% or less, and the black decorating portion is made of a resin binder containing a photosensitive resin. Is a cured product containing a black pigment, the pigment concentration of the black pigment with respect to the total solid content of the black decorative portion is in the range of 40% by mass to 85% by mass, and the total light transmittance of the decorative portion is It is a member characterized by being 0.02% or less.

It is preferable that the decorative part in this aspect has a predetermined light-shielding property. Here, the predetermined light-shielding property is different depending on the use of the decorating member of the present mode, but for example, the decorating portion of the present mode is such that the wiring and the control circuit of the display device can be hidden. It is preferably light-shielding. Therefore, the light-shielding property required for the decorative section can be appropriately adjusted according to the light-shielding properties of the white decorative section and the black decorative section described later. For example, the total light transmittance of the decorative portion is 0.02% or less, preferably 0.010% or less, and particularly preferably 0.005% or less.
In addition, the total light transmittance of a decoration part can be measured as follows. First, the light of the standard light source C by the International Commission on Illumination (CIE) is applied perpendicularly to the decorative member from the side where the decorative portion of the decorative member is formed, and the transmitted light transmitted through the decorative member is expressed in Yxy table. The value obtained by dividing the Y value (%) in the color system by 100 is defined as the transmittance of the transmitted light. Next, only the transparent substrate is measured as a reference value, and the total light transmittance of the decorative portion is calculated from the measured value obtained here and the transmittance of the transmitted light.
Further, the total light transmittance of the decorative portion in this aspect can be achieved by adjusting the concentration of the pigment contained in the white decorative portion and the black decorative portion.

Furthermore, the optical density when the thickness of the decorative portion in this embodiment is 8 μm is preferably 3.5 or more, more preferably 3.7 or more, and particularly preferably 4.0 or more. .
Note that the optical density here refers to an optical density (OD) value. The OD value represented by the optical density is specified by “log ₁₀ (I _in / I _out )” using the intensity I _in of vertically incident incident light and the intensity I _{out of} vertically transmitted transmitted light. And a microspectrophotometer (OSP-SP200, manufactured by Olympus Corporation).
In addition, the OD value of the decorative portion in this embodiment can be achieved by adjusting the concentration of the pigment contained in the white decorative portion and the black decorative portion.

  It is preferable that the decorative part in this aspect has a predetermined thickness. For example, the thickness of the decorative part, that is, the total thickness of the white decorative part and the black decorative part is preferably in the range of 8 μm to 20 μm, and particularly preferably in the range of 8 μm to 15 μm, particularly It is preferable to be within the range of 8 μm to 10 μm. When the thickness of the decorative portion is within the above range, when the decorative member of this aspect is used for a flexible display device, the decorative member can be bent freely, and the effect of peeling and cracking due to bending can be reduced. It is possible to suppress it.

It is preferable that the decorative part in this aspect has a predetermined flexibility. When the decorative member in this aspect is used for a flexible display device, it can be bent freely, and the occurrence of peeling or cracking due to bending can be effectively suppressed. As the flexibility of the decorative part, for example, in a bending durability test of the decorative member, for example, after performing a bending test at least 100,000 times with a bending radius of 3 mm, the decorative part cracks or the decorative part from the decorative member. It is preferred that there is no peeling. Above all, it is preferable that after performing a bending test at a bending radius of 3 mm or more for 150,000 times or more, there is no cracking of the decorative portion or peeling of the decorative portion from the decorative member, and particularly 200,000 times or more at a bending radius of 3 mm. After performing the bending test, it is preferable that there is no cracking of the decorative part or peeling of the decorative part from the decorative member.
In addition, the bending endurance test mentioned above can be measured on condition of bending radius R = 3mm, number of rotations 120rpm, and stroke 20mm, using a DDLMLH-FU plane-shaped U-shaped repetition tester manufactured by Yuasa System Co., Ltd. Further, in the present invention, after the bending test was performed 100,000 times or more, the decorative part was evaluated as having flexibility if there was no cracking of the decorative part or peeling of the decorative part from the decorative member.

  Hereinafter, the white decorative portion and the black decorative portion will be described separately.

(A) White decorating part In this embodiment, the white pigment is not particularly limited as long as the white pigment is in the range of 50% by mass to 85% by mass with respect to the total solid content of the white decorating portion. %, Particularly preferably in the range of 60% by mass to 80% by mass. Since the pigment concentration of the white pigment in this embodiment is within the above range, when the decorating member of this embodiment is used for a flexible display device, the outer peripheral portion of the display region can be made bright white, which is excellent. It is possible to exhibit design properties. Further, when the pigment concentration of the white pigment is within the above range, the content of the resin binder which is a main component of the white decorative portion can be suppressed within a predetermined range, and thus the thickness of the white decorative portion is increased. Therefore, it is possible to suppress a decrease in the bending resistance due to the formation of the metal.

It is preferable that the white decorative portion in this aspect has a light-shielding property (opacity) to such an extent that the black color cannot be seen through when the black decorative portion described later is arranged on the back surface. For example, the total light transmittance of the white decorative portion is 20% or less, preferably 18% or less, and particularly preferably 15% or less.
The total light transmittance of the white decorative portion can be measured by a fully automatic direct-reading haze computer (HGM-2DP) manufactured by Suga Test Instruments Co., Ltd.
In addition, the total light transmittance of the white decorative portion in the present embodiment can be achieved when the pigment concentration of the white pigment included in the white decorative portion is within the above-described predetermined range.

Furthermore, the optical density when the thickness of the white decorative portion in this embodiment is 10 μm is preferably 0.5 or more, more preferably 0.7 or more, and particularly preferably 1.0 or more. preferable.
Note that the optical density here refers to an optical density (OD) value. The OD value represented by the optical density is specified by “log ₁₀ (I _in / I _out )” using the intensity I _in of vertically incident incident light and the intensity I _{out of} vertically transmitted transmitted light. You.
In addition, the above-mentioned OD value of the white decorative portion in the present embodiment can be achieved when the pigment concentration of the white pigment contained in the white decorative portion is within the above-described predetermined range.

  It is preferable that the white decorative portion in this aspect has a predetermined flexibility. When the decorative member in this aspect is used for a flexible display device, it can be bent freely, and the occurrence of peeling or cracking due to bending can be effectively suppressed. Since the flexibility of the white decorative portion can be the same as the flexibility of the decorative portion described above, the description is omitted here.

The thickness of the white decorative portion in the present embodiment may be any thickness as long as the above-described pigment concentration of the white pigment can be realized, and it is particularly preferable that the white decorative portion exhibits a predetermined flexibility. The specific thickness of the white decorative portion is, for example, preferably in a range of 5 μm to 18 μm, more preferably in a range of 7 μm to 15 μm, and particularly preferably in a range of 8 μm to 12 μm. . When the thickness of the white decorative portion is within the above range, when the decorative member of this aspect is used for a flexible display device, the decorative member can be freely bent, and the occurrence of peeling and cracking due to bending can be reduced. It can be suppressed effectively.
Furthermore, in order to achieve a thickness within the above-mentioned range while the white decorative portion in the present embodiment exhibits a desired light-shielding property, for example, the pigment concentration of the white pigment contained in the white decorative portion is adjusted to the above-described predetermined range. It is preferable to adjust within.

  The white pigment in this embodiment is preferably a pigment exhibiting white. The term "white" as used herein refers to pure white (pure white), ivory, beige, reddish white (light pink), yellowish white, bluish white, greenish white, purple Examples include chromatic white color such as tinted white, brownish white, blackish gray (light gray), silvery white, and goldish white, and achromatic white color.

Such white can be defined as a numerical value using various color systems, for example. Above all, when the Munsell color system (JIS Z 8721), which is one of the conventional color systems, is used, the white color in this embodiment has a brightness of 8.0 or more and a saturation of 2.0 or less. Can be defined as The hue is not particularly limited, and may be any color.
In the Munsell color system, all colors can be represented by three attributes of lightness, saturation, and hue. The lightness in the Munsell color system is 10 for the brightest ideal white and 0 for the darkest ideal black. Since the white pigment in this embodiment exhibits a white color, the lightness is at least 8 and is preferably 8.0 or more. The saturation in the Munsell color system is set to 0 for an achromatic color, the value increases as the color becomes darker, and the maximum value changes as appropriate according to the lightness and hue, but is 14 at the maximum. In this embodiment, since the color is white even if it is a chromatic color, the saturation is 2 at the maximum, and is preferably 2.0 or less.
The three attributes of the Munsell color system can be measured by using a commercially available spectrophotometer, spectrophotometer, or the like.

  As such a white pigment, for example, titanium oxide, silica, talc, kaolin, clay, barium sulfate, calcium hydroxide and the like can be used. Among them, titanium oxide is typical. Titanium oxide crystal forms include rutile type and anatase type, and it is more preferable to use rutile type. This is because the rutile type has a lower catalytic activity than the anatase type and can suppress problems such as deterioration of the resin binder during heating. In addition, as the white pigment in this embodiment, only one kind of white pigment may be used, or two or more kinds of white pigments may be mixed and used. Further, other colored pigments may be mixed with the white pigment.

  As the photosensitive resin in the present embodiment, a material generally used for a decorative portion may be used. Specifically, for example, one kind of a photosensitive resin having a photoreactive group such as a reactive vinyl group such as an acrylic resin, an epoxy resin, a polyimide resin, a polyvinyl cinnamate resin, and a cyclized rubber. The above can be used. In the acrylic resin, for example, a photosensitive resin including an alkali-soluble resin, a polyfunctional acrylate monomer, a photopolymerization initiator, and other additives can be used as a resin component of the resin binder.

As the alkali-soluble resin, one or more kinds of methacrylic acid ester copolymers such as benzyl methacrylate-methacrylic acid copolymers and cardo resins such as epoxy acrylate having a bisphenolfluorene structure can be used. As the polyfunctional acrylate monomer, for example, one or more kinds of trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol hexa (meth) acrylate and the like are used. be able to.
In the present invention, (meth) acrylate means either methacrylate or acrylate.

  As the photopolymerization initiator, one or more known compounds such as alkylphenone-based, oxime-ester-based, triazine-based, and titanate-based can be used. For example, in the alkylphenone type, 2-methyl-1 [4- (methylthio) phenyl] -2-morpholinopropan-1-one (Irgacure (registered trademark) 907, manufactured by BASF Japan Ltd.), 2-benzyl- For 2-dimethylamino-1- (4-monofoliophenyl) butanone-1 (Irgacure (registered trademark) 369, manufactured by BASF Japan Co., Ltd.) and oxime ester, 1,2-octanedione, 1- [4- ( Phenylthio) phenyl]-, 2- (O-benzoyloxime) (Irgacure (registered trademark) OXE01, manufactured by BASF Japan Ltd.) or the like can be used.

  The resin binder in this embodiment can include various known additives such as a photosensitizer, a dispersant, a surfactant, a stabilizer, and a leveling agent, in addition to the above-described materials.

  As described above, the white decorative portion in this embodiment is a cured product in which a white pigment is contained in a resin binder containing a photosensitive resin. The term “cured product” as used herein is not limited to a cured product of only a photopolymerizable compound, and may be used as, for example, a dispersant, a surfactant, or an alkali-soluble resin compounded for alkali development suitability. It refers to a cured product which can usually contain a non-photopolymerizable polymer, other non-photopolymerizable compounds, and the like.

The method for forming the white decorative portion in this embodiment is not particularly limited as long as it is a method capable of forming a desired white decorative portion. For example, a so-called photolithography method of applying a white photosensitive resin composition containing a white pigment and an uncured photosensitive resin on a transparent base material described later, and developing by exposing in a predetermined pattern. No. The white decorative portion formed by the photolithography method can be thinner than the white decorative portion formed by the screen printing method. Further, the white decorative portion can be formed with higher linearity than the gravure printing method.
Examples of the coating method for coating the white photosensitive resin composition on a transparent substrate include known methods such as spin coating, roll coating, die coating, spray coating, and bead coating. .

(B) Black decorating portion In this embodiment, the black pigment is not particularly limited as long as the black pigment is in the range of 40% by mass to 85% by mass with respect to the total solid content of the black decorating portion. %, Particularly preferably in the range of 47% by mass to 70% by mass. When the pigment concentration of the black pigment in this embodiment is within the above range, a predetermined light-shielding property can be obtained. In this aspect, for example, when the decorative member is used for the flexible display device, the wiring, the control circuit, and the like arranged on the outer peripheral portion of the display area in the flexible display device can be hidden by the decorative portion. Therefore, since the black decorative portion has a predetermined light-shielding property, it is possible to suppress the loss of appearance due to the visibility of the wiring, the control circuit, and the like. Further, when the pigment concentration of the black pigment is within the above range, the content of the resin binder that is a main component of the black decorative portion can be suppressed within a predetermined range, and thus the thickness of the black decorative portion is increased. Therefore, it is possible to suppress a decrease in the bending resistance due to the formation of the metal.

Here, the above-described predetermined light-shielding property is different depending on the application of the decorative member of the present embodiment, for example, the wiring of the display device by the black decorative portion and the white decorative portion in the present embodiment, It is preferable that the light-shielding property is such that the control circuit and the like can be hidden. Therefore, the light-shielding property required for the black decorative part is only required to be able to achieve the above-described light-shielding property of the decorative part, that is, the total light transmittance of the decorative part, and depends on the light-shielding property of the white decorative part described above. It is not particularly limited because it is adjusted appropriately. For example, the total light transmittance of the black decorative portion is preferably 0.02% or less, more preferably 0.010% or less, and particularly preferably 0.005% or less.
In addition, the total light transmittance of the black decorative portion can be measured by the same method as the above-described total light transmittance of the decorative portion.
Further, the total light transmittance of the black decorative portion in the present embodiment can be achieved when the pigment concentration of the black pigment contained in the black decorative portion is within the above-described predetermined range.

Furthermore, when the thickness of the black decorative portion in this embodiment is 1.5 μm, the optical density is preferably 3.5 or more, more preferably 3.7 or more, and particularly preferably 4.0 or more. Is preferred.
Note that the optical density here refers to an optical density (OD) value. The OD value represented by the optical density is specified by “log ₁₀ (I _in / I _out )” using the intensity I _in of vertically incident incident light and the intensity I _{out of} vertically transmitted transmitted light. And a microspectrophotometer (OSP-SP200, manufactured by Olympus Corporation).
In addition, the OD value of the decorative portion in this aspect can be achieved when the pigment concentration of the black pigment contained in the black decorative portion is within the above-described predetermined range.

  It is preferable that the black decorative portion in this aspect has a predetermined flexibility. When the decorative member in this aspect is used for a flexible display device, it can be bent freely, and the occurrence of peeling or cracking due to bending can be effectively suppressed. The flexibility of the black decorative portion can be the same as the above-described flexibility of the decorative portion, and a description thereof will be omitted.

The thickness of the black decorative portion in the present embodiment may be any thickness as long as the above-described pigment concentration of the black pigment can be realized, and in particular, it is preferable that the thickness exhibits a predetermined flexibility. Specifically, the thickness of the black decorative portion is, for example, preferably in the range of 0.8 μm to 3.0 μm, more preferably in the range of 0.8 μm to 2.5 μm, and particularly preferably 0.8 μm. It is preferably in the range of 1.5 μm. When the thickness of the black decorative portion is within the above range, when the decorative member of this embodiment is used for a flexible display device, the decorative member can be freely bent, and the occurrence of peeling or cracking due to bending can be reduced. It can be suppressed effectively.
Furthermore, in order to achieve a thickness within the above range while the black decorative portion in the present embodiment exhibits a desired light-shielding property, for example, the pigment concentration of the black pigment included in the black decorative portion is set to the above-described predetermined range. It is preferable to adjust within.

  The black pigment in this embodiment is preferably a pigment exhibiting black. As used herein, the term "black" means, in addition to uncolored black, for example, bluish black, greenish black, reddish black, brownish black, orangeish black, or whiteish black. Any color is acceptable. Examples of such a black pigment include titanium black (lower titanium oxide, titanium oxynitride, etc.), carbon black and the like. Titanium black can obtain higher light-shielding properties against visible light at the same concentration and the same thickness as carbon black. Therefore, when titanium black is used, the thickness of the decorative portion can be reduced with the same light shielding property as compared with the case where carbon black is used. In addition, only one kind of black pigment may be used as the black pigment in this embodiment, or two or more kinds of black pigments may be mixed and used. Further, other colored pigments may be mixed with the black pigment.

  As the photosensitive resin in the present embodiment, a material generally used for a decorative portion may be used. Specifically, for example, one kind of a photosensitive resin having a photoreactive group such as a reactive vinyl group such as an acrylic resin, an epoxy resin, a polyimide resin, a polyvinyl cinnamate resin, and a cyclized rubber. The above can be used. In the acrylic resin, for example, a photosensitive resin including an alkali-soluble resin, a polyfunctional acrylate monomer, a photopolymerization initiator, and other additives can be used as a resin component of the resin binder.

As the alkali-soluble resin, one or more kinds of methacrylic acid ester copolymers such as benzyl methacrylate-methacrylic acid copolymers and cardo resins such as epoxy acrylate having a bisphenolfluorene structure can be used. As the polyfunctional acrylate monomer, for example, one or more kinds of trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol hexa (meth) acrylate and the like are used. be able to.
In the present invention, (meth) acrylate means either methacrylate or acrylate.

  As the photopolymerization initiator, one or more known compounds such as alkylphenone-based, oxime-ester-based, triazine-based, and titanate-based can be used. For example, in the alkylphenone type, 2-methyl-1 [4- (methylthio) phenyl] -2-morpholinopropan-1-one (Irgacure (registered trademark) 907, manufactured by BASF Japan Ltd.), 2-benzyl- For 2-dimethylamino-1- (4-monofoliophenyl) butanone-1 (Irgacure (registered trademark) 369, manufactured by BASF Japan Co., Ltd.) and oxime ester, 1,2-octanedione, 1- [4- ( Phenylthio) phenyl]-, 2- (O-benzoyloxime) (Irgacure (registered trademark) OXE01, manufactured by BASF Japan Ltd.) or the like can be used.

  The resin binder in this embodiment can include various known additives such as a photosensitizer, a dispersant, a surfactant, a stabilizer, and a leveling agent, in addition to the above-described materials.

  As described above, the black decorative portion in this embodiment is a cured product in which the black pigment is contained in the resin binder containing the photosensitive resin. The term “cured product” as used herein is not limited to a cured product of only a photopolymerizable compound, and may be used as, for example, a dispersant, a surfactant, or an alkali-soluble resin compounded for alkali development suitability. It refers to a cured product which can usually contain a non-photopolymerizable polymer, other non-photopolymerizable compounds, and the like.

The method for forming the black decorative portion in this embodiment is not particularly limited as long as it is a method capable of forming a desired black decorative portion. For example, a black photosensitive resin composition containing a black pigment and an uncured photosensitive resin is coated on the white decorative portion described above, and then exposed and developed in a predetermined pattern, a so-called photolithography method. Is mentioned. The black decorative portion formed by the photolithography method can be thinner than the black decorative portion formed by the screen printing method. Further, the black decorative portion can be formed with higher linearity than the gravure printing method.
Examples of the coating method for coating the black photosensitive resin composition on a transparent substrate include known methods such as spin coating, roll coating, die coating, spray coating, and bead coating. .

(2) Second Aspect In this aspect, the thickness of the decorative part is in the range of 8 μm to 20 μm, the total light transmittance of the white decorative part is 20% or less, and the total light transmission of the decorative part. A member having a ratio of 0.02% or less.

  The thickness of the decorative portion in the present embodiment, that is, the total thickness of the white decorative portion and the black decorative portion may be in the range of 8 μm to 20 μm, and particularly preferably in the range of 8 μm to 15 μm, particularly It is preferable to be within the range of 8 μm to 10 μm. When the thickness of the decorative portion is within the above range, when the decorative member of this aspect is used for a flexible display device, the decorative member can be bent freely, and the effect of peeling and cracking due to bending can be reduced. It is possible to suppress it.

It is preferable that the decorative part in this aspect has a predetermined light-shielding property. Here, the above-described predetermined light-shielding property differs depending on the use of the decorating member of the present mode, but, for example, the decorating portion of the present mode can hide the wiring and the control circuit of the display device. It is preferable that the light-shielding property is at a certain level. Therefore, the light-shielding property required for the decorative section can be appropriately adjusted according to the light-shielding properties of the white decorative section and the black decorative section described later. For example, the total light transmittance of the decorative portion is 0.02% or less, preferably 0.015% or less, and particularly preferably 0.01% or less.
In addition, the total light transmittance of the decorative part can be measured by the same method as in the above-described “(1) First Mode”.
Further, the total light transmittance of the decorative portion in this aspect can be achieved by adjusting the concentration of the pigment contained in the white decorative portion and the black decorative portion.

Furthermore, the optical density when the thickness of the decorative portion in this embodiment is 10 μm is preferably 3.6 or more, more preferably 3.8 or more, and particularly preferably 4.0 or more. .
Note that the optical density here refers to an optical density (OD) value. The OD value represented by the optical density is specified by “log ₁₀ (I _in / I _out )” using the intensity I _in of vertically incident incident light and the intensity I _{out of} vertically transmitted transmitted light. And a microspectrophotometer (OSP-SP200, manufactured by Olympus Corporation).
In addition, the OD value of the decorative portion in this embodiment can be achieved by adjusting the concentration of the pigment contained in the white decorative portion and the black decorative portion.

It is preferable that the decorative part in this aspect has a predetermined flexibility. When the decorative member in this aspect is used for a flexible display device, it can be bent freely, and the occurrence of peeling or cracking due to bending can be effectively suppressed. Since the flexibility of the decorative portion can be the same as the flexibility of the decorative portion described in the section of “(1) First Mode” above, the description is omitted here.
Hereinafter, the white decorative portion and the black decorative portion will be described separately.

(A) White decorating section The thickness of the white decorating section in this embodiment may be any thickness as long as the above-described thickness of the decorating section can be achieved, and can be appropriately adjusted according to the thickness of the black decorating section described later. . For example, the thickness of the white decorative portion is preferably in the range of 5 μm to 18 μm, particularly preferably in the range of 7 μm to 15 μm, and particularly preferably in the range of 8 μm to 12 μm. When the thickness of the white decorative portion in this embodiment is within the above range, the thickness of the decorative portion can be within the above-described desired range. In addition, since the thickness of the white decorative portion is within the above range, when the decorative member of this aspect is used for a flexible display device, the outer peripheral portion of the display region can be made bright white having opacity. It is possible to exhibit excellent design properties.

It is preferable that the white decorative portion in this aspect has a light-shielding property (opacity) to such an extent that the black color cannot be seen through when the black decorative portion described later is arranged on the back surface. For example, the total light transmittance of the white decorative portion is 20% or less, preferably 18% or less, and particularly preferably 15% or less.
Note that the total light transmittance of the white decorative portion can be measured by the same method as the total light transmittance of the white decorative portion described in the section “(1) First aspect” above. The description in is omitted.

  The white decorative portion in this embodiment is characterized by having the thickness and the total light transmittance described above. To obtain a white decorative portion satisfying such conditions, for example, a white pigment in the white decorative portion Is preferably within a predetermined range. Specifically, the white pigment is preferably in the range of 50% by mass to 85% by mass, and more preferably in the range of 55% by mass to 80% by mass, based on the total solid content of the white decorative portion. In particular, it is preferably in the range of 60% by mass to 80% by mass. Note that, in this embodiment, the effect when the pigment concentration of the white pigment is within the above range with respect to the total solid content of the white decorative portion can be the same as in the above “(1) First embodiment”. The description here is omitted.

  In addition, the OD value, flexibility, material, forming method, and the like of the white decorative portion in this embodiment can be the same as those in the above-described "(1) First embodiment", and thus description thereof is omitted.

(B) Black decorative part

  The thickness of the black decorative portion in this embodiment is not particularly limited as long as the above-described thickness of the decorative portion can be achieved, but is preferably, for example, in the range of 0.8 μm to 3.0 μm, and in particular, 0.1 μm. It is preferably in the range of 8 μm to 2.5 μm, and particularly preferably in the range of 0.8 μm to 1.5 μm. Since the thickness of the black decorative portion in this embodiment is within the above range, the thickness of the decorative portion, that is, the total thickness of the white decorative portion and the black decorative portion, can be within the desired range described above. Thus, a predetermined light-shielding property can be provided. Therefore, when the decorative member of this aspect is used for a flexible display device, the decorative portion arranged on the outer peripheral portion of the display area allows the wiring and control circuit of the display device to be seen, thereby preventing loss of appearance. can do.

In addition, the ordinary white decorative portion has poor light-shielding properties by itself, and there is a limit to hiding the wiring and control circuit of the display device using the white decorative portion alone. Therefore, when a decorating member having only a white decorating portion is used for a display device, there is a problem that wiring, control circuits, and the like of the display device can be seen through the white decorating portion. Therefore, it is preferable to provide a black decorative portion having a predetermined light shielding property on the back surface of the white decorative portion. Here, the predetermined light-shielding property of the black decorative portion is different depending on the use of the decorative member of the present embodiment, but is, for example, a light-shielding property that can hide the wiring and the control circuit of the display device. Preferably, there is. Specifically, it is preferable that the light-shielding property is such that the total light transmittance of the decorative portion described above can be achieved. For example, the total light transmittance of the black decorative portion is preferably 0.02% or less, more preferably 0.01% or less, and particularly preferably 0.005% or less.
In addition, the total light transmittance of the black decorative portion can be measured by the same method as in “(1) First Mode” described above.
In addition, the total light transmittance of the black decorative portion in the present embodiment can be achieved by adjusting the pigment concentration of the black pigment contained in the black decorative portion.

  The black decorative portion in this aspect is characterized by having the above-mentioned thickness and a predetermined light-shielding property, but in order to obtain a black decorative portion satisfying such conditions, for example, a black pigment in the black decorative portion Is preferably within a predetermined range. Specifically, the black pigment is not particularly limited as long as the black pigment with respect to the total solid content of the black decorative portion is in the range of 40% by mass to 85% by mass, and particularly, in the range of 45% by mass to 80% by mass. Is preferred, and particularly preferably in the range of 47% by mass to 70% by mass. In this embodiment, the effect when the pigment concentration of the black pigment is within the above range with respect to the total solid content of the black decorative portion can be the same as in the above “(1) First embodiment”. The description here is omitted.

  In addition, the OD value, flexibility, material, forming method, and the like of the black decorative portion in this embodiment can be the same as those in the above-described "(1) First embodiment", and thus description thereof is omitted.

2. Transparent substrate The transparent substrate in the present invention is a member having flexibility, and is a member that supports the above-described decorative portion.

  Here, “transparent” means that the display device using the decorative member of the present invention is transparent to the extent that it does not prevent the operator from viewing the operation surface unless otherwise specified. Therefore, “transparent” includes colorless and transparent, and colored and transparent to the extent that visibility is not impaired, and is not defined by a strict transmittance, and the degree of transparency is determined according to the use of the decorative member of the present invention. Can be determined.

  The transparent substrate in the present invention is not particularly limited as long as it is a member having flexibility. Here, having flexibility can be confirmed by conducting a bending resistance test. For example, it can be confirmed by measuring using a DLDMLH-FU planar U-shaped repetition tester manufactured by Yuasa System Co., Ltd. under the conditions of a bending radius R = 3 mm, a rotation speed of 120 rpm / min, and a stroke of 20 mm.

  The material constituting the transparent substrate in the present invention is preferably a material that can impart a predetermined flexibility. For example, a polyester resin such as polyimide (PI), polyethylene terephthalate (PET), or polyethylene naphthalate (PEN), or an acrylic resin, a polycarbonate resin, a cycloolefin resin, or the like can be given. Further, depending on the thickness, a glass substrate can be used. In the present invention, it is preferable to use PI from the viewpoint of flexibility and heat resistance.

  The thickness of the transparent substrate in the present invention is preferably a thickness having a predetermined flexibility and a rigidity enough to function as a decorative member. The specific thickness of the transparent substrate is preferably in the range of 20 μm to 100 μm, more preferably in the range of 20 μm to 85 μm, and particularly preferably in the range of 30 μm to 60 μm.

  As the transparent base material in the present invention, a commercially available transparent base material may be prepared. For example, a desired transparent base material may be formed by applying a predetermined resin composition on a glass base material. Examples of a coating method for coating the resin composition on a glass substrate include known methods such as a spin coating method, a roll coating method, a die coating method, a spray coating method, and a bead coating method.

3. Black Matrix The present invention may include a black matrix having a plurality of openings in the display area defined by the decorating section. Specifically, as shown in FIG. 2, a black matrix 4 having an opening in a display region D defined on a transparent substrate 3 and defined by a white decorative portion 2 a and a black decorative portion 2 b is provided. May be.

It is preferable that the material of the black matrix is the same as the material of the black decorative portion described above. This is because a black matrix can be formed at the same time when the black decorative portion is formed, so that it is not necessary to separately provide a forming step for forming the black matrix. That is, a black matrix can be formed without increasing the number of steps.
The black matrix is usually formed by a photolithography method. Further, it is preferable to form the black decorative portion by a photolithography method from the viewpoint of reducing the thickness. As described above, since both the black matrix and the black decorative portion can be formed by the photolithography method, they are preferably formed at the same time.
Note that the specific material of the black matrix can be the same as the material of the black decorative portion described above, and a description thereof will be omitted.

  The black matrix in the present invention has a plurality of openings. The shape of the opening can be appropriately adjusted according to the design of the display device using the decorative member of the present invention, and examples thereof include a triangular shape, a square shape, a rhombus shape, and a hexagonal shape.

  It is preferable that the thickness of the black matrix is such that the function as the black matrix can be exhibited. Especially, it is preferable that the thickness is the same as the thickness of the black decorative portion. This is because it can be formed simultaneously with the black decorative portion. Note that the specific thickness of the black matrix can be the same as the thickness of the above-described decorative portion, and a description thereof will be omitted.

  Further, the size, number, pitch, and the like of the plurality of openings arranged in the black matrix can be appropriately adjusted according to the design of a display device in which the decorative member of the present invention is used. Is omitted.

  As a formation method of the black matrix, a formation method similar to that of a black matrix used for a general display device can be used. For example, there is a method in which a black matrix layer is formed by a sputtering method, a vacuum evaporation method, a coating method, or the like, and the black matrix layer is patterned by a photolithography method. Therefore, when simultaneously forming the black matrix and the black decorative portion, on the transparent substrate on which the white decorative portion is formed, a layer made of the black decorative portion and the constituent material of the black matrix is formed, and then The layer can be patterned by photolithography to form a black decorative portion and a black matrix.

4. Colored part In the present invention, a colored part may be provided in the opening of the black matrix. That is, the colored portion is a pattern-shaped member arranged in the opening of the black matrix. Specifically, as shown in FIG. 3, the opening of the black matrix 4 may have coloring portions 5 (here, red coloring portions 5R, green coloring portions 5G, and blue coloring portions 5B).

  The colored portion has, for example, three colored portions of red, green, and blue. The color of the colored portion may be any color including at least three colors of red, green, and blue. For example, three colors of red, green, and blue, four colors of red, green, blue, and yellow, or red, Five colors of green, blue, yellow, and cyan may be used.

As the coloring portion, for example, a coloring material in which a coloring material is dispersed in a binder resin can be used.
Examples of the coloring material used for the colored portion include pigments and dyes of each color. For example, examples of the coloring material used in the red coloring layer include perylene pigments, lake pigments, azo pigments, quinacridone pigments, anthraquinone pigments, anthracene pigments, and isoindoline pigments. Examples of the coloring material used in the green coloring layer include, for example, phthalocyanine pigments such as halogen-substituted phthalocyanine pigments or halogen-substituted copper phthalocyanine pigments, triphenylmethane-based basic dyes, isoindoline-based pigments, and isoindolin-based pigments. Linone pigments and the like. Further, examples of the coloring material used for the blue coloring layer include copper phthalocyanine pigments, anthraquinone pigments, indanthrene pigments, indophenol pigments, cyanine pigments, and dioxazine pigments. These pigments and dyes may be used alone or as a mixture of two or more. Examples of the binder resin used for the coloring portion include a photosensitive resin having a reactive vinyl group such as an acrylate, methacrylate, polyvinyl cinnamate, or cyclized rubber.

  In the colored portion, in addition to the above-described materials, if necessary, a photopolymerization initiator, a sensitizer, a coating improver, a development improver, a cross-linking agent, a polymerization inhibitor, a plasticizer, a flame retardant, and the like. It can be contained.

  Further, a white layer containing a binder resin without containing the above-described coloring material may be formed on the same plane where the colored portions are formed.

  The arrangement of the colored portions is not particularly limited, and may be a known arrangement such as a stripe type, a mosaic type, a triangle type, and a four-pixel arrangement type.

  The thickness of the colored portion can be the same as the thickness of a general colored portion in a color filter, and can be set, for example, in the range of 1 μm to 5 μm.

  As a formation method of forming a patterned colored portion in the opening of the black matrix, for example, a photolithography method, an inkjet method, a printing method, and the like can be given.

5. Sensor Electrode In the present invention, a sensor electrode capable of detecting the position of the touch panel may be provided on the black matrix.

  In the present invention, any sensor electrode capable of detecting the position of the touch panel may be used, and a sensor electrode used for a general touch panel can be used. It is preferable that the sensor electrode in the present invention generally has a mesh-shaped first electrode and a second electrode. Specifically, as shown in FIG. 4, a first electrode 6a and a second electrode 6b may be provided on the black matrix 4. In FIG. 4, the first electrodes 6a and the second electrodes 6b are alternately arranged on the adjacent black matrix 4, and the first electrodes 6a and the second electrodes 6b are provided between the first electrodes 6a and the second electrodes 6b. An example is shown in which an insulating layer 7 for electrically insulating the two electrodes 6b is provided, and a protective layer 8 is provided on the second electrodes 6b.

  The planar shape and the planar outer shape of the mesh-shaped first and second electrodes in the sensor electrode are described in, for example, Japanese Patent No. 4610416, Japanese Patent Application Laid-Open No. 2010-286886, Japanese Patent Application Laid-Open No. 2004-192093, and Japanese Patent Application Laid-Open No. 2010-2010. As described in JP-A-277392, JP-A-2011-129501, and the like, a sensor electrode used in a general touch panel can be used, and thus description thereof is omitted.

  Examples of the material used for the sensor electrode include a simple substance of silver, gold, chromium, platinum, and aluminum, and an alloy mainly containing any of these. As the metal alloy, an alloy of silver, palladium, and copper called APC is widely used. Further, as a metal composite, a three-layer structure of molybdenum, aluminum, and molybdenum, which is called MAM, is also applicable. Further, for example, a conductive polymer in which the above metal is added to a resin material such as PEDOT can be used.

  The sensor electrode in the present invention is preferably arranged on the above-mentioned black matrix. Therefore, the line width of the sensor electrode can be appropriately adjusted according to the line width of the black matrix, but is preferably equal to or less than the line width of the black matrix. The specific line width of the sensor electrode is, for example, preferably in the range of 1.0 μm to 28 μm, more preferably in the range of 1.5 μm to 23 μm, and particularly preferably in the range of 2.0 μm to 20 μm. Is preferably within the range. When the line width of the sensor electrode is within the above range, the sensor electrode can be suitably arranged on the black matrix, and when the decorative member of the present invention is used for the display device, the visibility of the display device is reduced. Can be suppressed. Further, peeling and cracking of the sensor electrode when the decorative member of the present invention is bent can be effectively suppressed.

  In addition, the thickness of the sensor electrode is preferably a thickness that can exhibit conductivity sufficient to detect the position of the touch panel. The thickness of the sensor electrode is, for example, preferably in the range of 10 nm to 1000 nm, more preferably in the range of 50 nm to 800 nm, and particularly preferably in the range of 100 nm to 200 nm. When the thickness of the sensor electrode is within the above range, peeling and cracking of the sensor electrode when the decorative member of the present invention is bent can be effectively suppressed.

  As a method for forming the sensor electrode, for example, a method capable of forming a mesh-like first electrode and a second electrode is preferable. Specifically, there is a method in which a conductive layer is formed using a conductive material forming a sensor electrode, a resist pattern is formed on the conductive layer, and the conductive layer is etched using the resist pattern as a mask. Can be At this time, as a method for forming the conductive layer, for example, a dry process such as a vacuum evaporation method, a sputtering method, a CVD method, and an ion plating method can be used.

6. Circularly Polarizing Plate In the present invention, a circularly polarizing plate may be provided in the display area defined by the decorative portion. Specifically, as shown in FIG. 5, a circularly polarizing plate 9 may be provided in the display area D defined by the decorative part 2, and in this case, a flattening layer is provided at the opening of the decorative part 2. 11 can be arranged. In the present invention, since the thickness of the decorative portion can be reduced, a circularly polarizing plate can be disposed on the decorative member via an adhesive layer.

  The circularly polarizing plate in the present invention can be the same as that used for a general display device, and for example, may have a polarizing plate and various retardation layers.

  A polarizing plate used for a circular polarizing plate, for example, decomposes transmitted light into two orthogonal polarization components, transmits a polarization component in one direction (a direction parallel to the transmission axis), and orthogonally crosses the one direction. A polarized light component in the other direction (a direction parallel to the absorption axis) can be absorbed. Such a polarizing plate can be formed by adsorbing and orienting iodine compound molecules on a film material made of polyvinyl alcohol (PVA).

  Examples of the retardation layer include a retardation layer having an in-plane retardation value corresponding to λ / 4, a retardation layer having an in-plane retardation value corresponding to λ / 2, and a positive C plate (+ C plate). And the like. The combination and configuration of the retardation layer can be appropriately adjusted according to the use of the decorative member of the present invention, and are not particularly limited.

7. Other Members The decorative member of the present invention only needs to have the above-described transparent base material, white decorative portion, and black decorative portion, and may have other members as necessary. Other members include, for example, a flattening layer, an adhesive layer, an insulating layer, a protective layer, an antireflection layer, and the like.

(1) Flattening Layer The flattening layer in the present invention can be arranged on the transparent substrate in a region where the decorative portion is not formed, that is, in the opening of the decorative portion. When the decorating member of the present invention is used for a flexible display device, the decorating member can be easily installed by disposing the flattening layer.

  It is preferable to use a material having a predetermined light transmittance and a predetermined flexibility like the decorative part as a material constituting the flattening layer in the present invention. Specifically, a resin material can be used. Note that the resin material used for the flattening layer can be the same as the resin material used for the above-described transparent base material, and a description thereof is omitted here.

  The thickness of the flattening layer is preferably such that the above-described effects of providing the flattening layer can be obtained. Specifically, it is preferable that the thickness is equal to or smaller than the thickness of the decorative portion described above.

(2) Adhesive layer The adhesive layer in the present invention can be disposed on the transparent substrate in a region where the decorative portion is not formed, that is, in the opening of the decorative portion. The arrangement of the adhesive layer makes it possible to easily attach the decorative member when the decorative member of the present invention is used for a flexible display device.

  It is preferable to use a material having a predetermined light transmittance and a predetermined flexibility like the decorative part, as a material constituting the adhesive layer in the present invention. Specifically, a general material such as a photocurable resin or a thermosetting resin can be used.

  The thickness of the adhesive layer is preferably, for example, such that the decorative member of the present invention can be attached to a flexible display device. Specifically, it is preferable that the thickness is equal to or greater than the thickness of the decorative portion described above.

(3) Insulating Layer When the sensor electrode 6 has a mesh-shaped first electrode 6a and a second electrode 6b, for example, as shown by reference numeral 7 in FIG. It can be used when electrically insulating the second electrode 6b.

  The material of the insulating layer in the present invention is preferably a material having a desired insulating property, and a material generally used for a touch panel can be used. Specifically, a light-transmitting acrylic resin, a siloxane resin, or the like can be given.

  The thickness of the insulating layer is preferably, for example, such that the first electrode and the second electrode are electrically insulated from each other and a short circuit can be prevented. The specific thickness of the insulating layer can be the same as the thickness of the insulating layer used for a general touch panel, and can be, for example, in the range of 0.5 μm to 3 μm.

(4) Protective Layer The protective layer in the present invention can be disposed on the surface of the transparent substrate on which the decorative portion is formed so as to cover the decorative portion and the opening. For example, as shown by reference numeral 8 in FIG. 4, when the sensor electrode 6 has a mesh-shaped first electrode 6a and a second electrode 6b, the sensor electrode 6 can be arranged to cover the second electrode 6b. The protective function of the decorative member of the present invention can be enhanced by disposing the protective layer.

  It is preferable to use a material having a predetermined light transmittance and a predetermined flexibility as a material constituting the protective layer in the present invention. For example, a resin material that can be used for a general protective layer is exemplified, and among them, a resin material having heat resistance and scratch resistance is preferable. Specifically, an epoxy resin, an acrylic resin, a polyimide resin, or the like can be given.

  The thickness of the protective layer is, for example, preferably such that the protective function as the protective layer can be exhibited and the flexibility of the decorative member of the present invention is not impaired. Specifically, for example, the thickness is preferably in the range of 1 μm to 5 μm.

(5) Anti-reflection layer The anti-reflection layer in the present invention can be disposed on the surface of the transparent substrate on which the decorative portion is formed so as to cover the decorative portion and the opening. By disposing the antireflection layer, it is possible to suppress the reflection of external light on the surface of the decorative member of the present invention, and it is possible to enhance the visibility.

  It is preferable to use a material having a predetermined light transmittance and a predetermined flexibility as a material constituting the antireflection layer of the present invention. Specifically, a material that can be used for a general antireflection layer can be given, and a description thereof is omitted here.

  The thickness of the antireflection layer is preferably such that it can exhibit an antireflection function as the antireflection layer and does not impair the flexibility of the decorative member of the present invention. The specific thickness of the anti-reflection layer can be appropriately adjusted according to the material constituting the anti-reflection layer, and the description is omitted here.

(6) Infrared transmitting window In the present invention, the decorative portion may form an infrared transmitting window. The infrared transmission window is a portion that blocks visible light and transmits infrared light, and functions when, for example, the decorative member of the present invention is used in a mobile phone having a touch panel function such as a smartphone. Specifically, a mobile phone with a touch panel function is used to prevent malfunction of the touch panel when the mobile phone is put on the ear during a call, or to extend the battery life by turning off the display panel display. A human sensor that detects the approach of human skin can be suitably used, and the infrared transmission window functions as this human sensor.

  When the infrared transmitting window is formed by the decorative portion, the infrared transmitting window is formed between the transparent substrate and the decorative portion having the infrared transmitting window, or so as to cover the infrared transmitting window formed in the decorative portion. The layers are arranged. Note that the specific configuration of the infrared transmission window, the infrared transmission layer, and the like can be the same as, for example, Japanese Patent No. 5392641, and a description thereof will not be repeated.

  The infrared transmission window is preferably formed by a method capable of forming a desired infrared transmission window. For example, it is preferable to form an infrared transmission window at the same time as the step of forming the decorative portion. Specifically, a so-called photolithography method in which a black photosensitive resin composition containing a black pigment and an uncured photosensitive resin is applied on a transparent base material, and then exposed and developed in a predetermined pattern. When the decorative portion is formed by patterning, the infrared transmission window is preferably formed by patterning at the same time. This is because an additional step of forming an infrared transmission window is not required, and thus an increase in the number of manufacturing steps due to the formation of the infrared transmission window can be suppressed.

  Further, the infrared-transmitting layer disposed in the infrared-transmitting window, after applying the infrared-transmitting composition forming the infrared-transmitting layer on a transparent substrate, is exposed to a predetermined pattern and developed. That is, it can be formed by patterning by a so-called photolithography method.

8. Manufacturing method of decorative member The manufacturing method of the decorative member of the present invention is not particularly limited as long as a desired decorative member can be obtained.
This will be described below with reference to the drawings.

  FIGS. 6A to 6C are schematic process diagrams illustrating an example of a method for manufacturing a decorative member of the present invention. As shown in FIG. 6 (a), a transparent base material 3 is prepared. Next, as shown in FIG. 6 (b), the decorative part 2 is patterned on the transparent base material 3 by photolithography. By forming, the decorative member 1 can be manufactured. In addition, when arrange | positioning a decoration part, a roll-to-roll can also be used. In addition, as a method of arranging the obtained decorative member on a flexible display device, for example, as shown in FIG. 6C, the decorative member is disposed on the carrier glass substrate 13. Thereafter, although not shown, a method of bonding the obtained laminate to a flexible display device and then peeling the carrier glass substrate is used. At this time, a removable adhesive layer may be provided between the carrier glass substrate and the transparent substrate.

  FIGS. 7A to 7C are schematic process diagrams illustrating another example of the method for manufacturing a decorative member of the present invention. As shown in FIG. 7 (a), a carrier glass substrate 13 is prepared. Next, as shown in FIG. 7 (b), a transparent substrate 3 is formed on the carrier glass substrate 13 by a coating method. Next, as shown in FIG. 7C, the decorative member 2 can be manufactured by forming the decorative portion 2 in a pattern on the transparent base material 3 by a photolithography method. Further, as a method of arranging the thus obtained decorative member on, for example, a flexible display device, although not shown, after laminating the laminate obtained in FIG. And a method of peeling the carrier glass substrate.

  When forming the decorative member of the present invention, the adhesive layer used between the transparent substrate and the carrier glass substrate can be used as long as it is a general adhesive layer, the initial adhesive force and removability From the viewpoint, it is preferable to use an acrylic pressure-sensitive adhesive. The composition of the acrylic pressure-sensitive adhesive is not particularly limited.

  In the present invention, by forming the decorative member on the carrier glass substrate, it is possible to suppress problems such as the decorative member contracting due to heating in the manufacturing process. Therefore, when arranging a black matrix or the like in the display area of the decorative member, high-precision positioning can be performed.

  The detailed method of forming each member is the same as that described in the section on each member, and a description thereof will not be repeated.

9. Specific examples Specific examples of the decorative member of the present invention include those having the following configurations.

(1) Specific example 1
Example 1 of the decorative member of the present invention is an example in which the decorative member has a sensor electrode capable of detecting the position of the touch panel.
Hereinafter, Example 1 of the present invention will be described with reference to the drawings.

  As shown in FIG. 8, the decorative member 1 according to the first embodiment of the present invention includes a transparent substrate 3, a decorative section 2 disposed on the transparent substrate 3, and a display area defined by the decorative section 2. And a black matrix 4 having a plurality of openings, and a mesh-like sensor electrode 6 disposed on the black matrix 4. Further, in the specific example 1, the sensor electrode 6 has a mesh-shaped first electrode 6a and a second electrode 6b, and the first electrode 6a and the second electrode 6b are electrically insulated through the insulating layer 7. I have.

  In the first embodiment of the present invention, since the black matrix is provided on the same plane as the decorative portion, the decorative portion and the black matrix can be simultaneously formed of the same material. Therefore, it is possible to reduce the number of forming steps as compared with the case where the decorative portion and the black matrix are formed separately. Further, since the sensor electrode is integrated with the decorating member, the thickness of the display device can be reduced when the decorating member is used for the display device as compared with the case where the sensor electrode base material is separately formed on the decorating member. Can be reduced.

(2) Specific example 2
Example 2 of the decorative member of the present invention is an example in which the decorative member has a sensor electrode and a colored portion.
Hereinafter, Example 2 of the present invention will be described with reference to the drawings.

  As shown in FIG. 9, a specific example 2 of the decorative member of the present invention includes a transparent substrate 3, a decorative portion 2 disposed on the transparent substrate 3, and a display area defined by the decorative portion 2. , A black matrix 4 having a plurality of openings, a mesh-shaped sensor electrode 6 disposed on the black matrix 4, and a coloring portion 15 (here, red coloring) disposed in the opening of the black matrix 4. 15R, a green colored portion 15G, and a blue colored portion 15B). Further, in the specific example 2, the sensor electrode 6 has a mesh-shaped first electrode 6a and a second electrode 6b, and the first electrode 6a and the second electrode 6b are electrically insulated through the insulating layer 7. I have.

  In the specific example 2 of the present invention, the coloring portion is provided at the opening of the black matrix, and the sensor electrode and the coloring portion are integrated with the decorating member. When the decorative member is used for a display device, the thickness of the display device can be reduced as compared with the case of forming a colored layer having

(3) Specific example 3
Example 3 of the decorative member of the present invention is an example in which the decorative member has a circularly polarizing plate and a sensor electrode.
Hereinafter, Example 3 of the present invention will be described with reference to the drawings.

  As shown in FIG. 10, the third embodiment of the decorative member according to the present invention includes a transparent substrate 3, a decorative portion 2 disposed on the transparent substrate 3, and a display area defined by the decorative portion 2. , A black matrix 4 arranged in a display area on the circular polarizing plate 9 and having a plurality of openings, and a mesh-shaped sensor electrode 6 arranged on the black matrix 4. It is an example. Further, in the specific example 3, the sensor electrode 6 has a mesh-shaped first electrode 6a and a second electrode 6b, and the first electrode 6a and the second electrode 6b are electrically insulated via the insulating layer 7. I have.

  In the specific example 3 of the present invention, since the thickness can be reduced as compared with the conventional decorative portion, the step between the transparent base material and the decorative portion can be extremely reduced. Therefore, without using a flattening layer for filling the step, the circularly polarizing plate can be formed as it is, and when the decorative member is used for the display device, as compared with the case where the flattening layer is used, The thickness of the display device can be reduced.

(4) Specific example 4
Example 4 of the decorative member of the present invention is an example in which the decorative member has a circularly polarizing plate, a sensor electrode, and a colored portion.
Hereinafter, Example 4 of the present invention will be described with reference to the drawings.

  As shown in FIG. 11, the decorative member 4 of the present invention includes a transparent substrate 3, a decorative portion 2 disposed on the transparent substrate 3, and a display area defined by the decorative portion 2. , A black matrix 4 disposed in a display area on the circular polarizing plate 9 and having a plurality of openings, a mesh-shaped sensor electrode 6 disposed on the black matrix 4, This is an example having coloring portions 15 (here, red coloring portions 15R, green coloring portions 15G, and blue coloring portions 15B) arranged in the openings of the matrix 4. Further, in the specific example 4, the sensor electrode 6 has a mesh-shaped first electrode 6a and a second electrode 6b, and the first electrode 6a and the second electrode 6b are electrically insulated through the insulating layer 7. I have.

  In the fourth embodiment of the present invention, since the thickness can be reduced as compared with the conventional decorative portion, the step between the transparent base material and the decorative portion can be extremely reduced. Therefore, without using a flattening layer for filling the step, the circularly polarizing plate can be formed as it is, and when the decorative member is used for the display device, as compared with the case where the flattening layer is used, The thickness of the display device can be reduced. In addition, since the black matrix has a colored portion in the opening, and the sensor electrode and the colored portion are integrated with the decorative member, compared to a case where the sensor electrode base material and the colored layer are separately formed on the decorative member. Thus, when the decorative member is used for a display device, the thickness of the display device can be reduced.

B. Display Device The display device of the present invention is a device including the above-described decorative member and a display panel.
Hereinafter, the display device of the present invention will be described with reference to the drawings.

  FIG. 12 is a schematic plan view showing an example of the display device of the present invention. As shown in FIG. 12, in the present invention, it is only necessary to have the decorative member 1 and the display panel 20. When the decorative member 1 does not have a touch panel function, the display device 100 of the present invention may include the touch panel 10 between the decorative member 1 and the display panel 20.

  Note that a specific configuration of the display device of the present invention can be the same as, for example, Japanese Patent No. 5392641, and thus a detailed description thereof will be omitted.

ADVANTAGE OF THE INVENTION According to this invention, when a display apparatus is bent, peeling of a decoration part and generation | occurrence | production of a crack can be suppressed. In addition, since the decorating portion has a predetermined light-shielding property, the decorating portion hides wiring and the like, and an excellent appearance can be obtained.
Note that specific effects can be the same as those described in the above section “A. Decorating member”, and a description thereof will be omitted.

The display device of the present invention is not particularly limited as long as it has the above-described decorative member and display panel, but preferably has a predetermined flexibility.
Here, the predetermined flexibility means that after the bending durability test is performed on the display device of the present invention 100,000 times, no problem occurs in the characteristics of the display device.
In addition, the bending durability test of the display device can be measured by using a DLDMH-FU planar body U-shaped repetition tester manufactured by Yuasa System Co., Ltd., bending radius R = 3 mm, rotation speed 120 rpm / min, stroke 20 mm, or DLDMLH-FS It can be measured by a flat-plate unloaded U-shaped expansion / contraction tester, bending radius R = 3 mm, rotation speed 120 rpm / min, and stroke 20 mm.

  Hereinafter, the decorative member, the display panel, and the touch panel that constitute the display device of the present invention will be described.

1. Decorating Member The decorating member in the present invention is a member having a transparent base material having flexibility and a decorating portion arranged on the transparent base material. Note that the decorating member can be the same as the content described in the above section “A. Decorating member”, and thus the description is omitted here.

2. Display Panel The display panel in the present invention is typically a liquid crystal display panel or an electroluminescent (EL) panel, but may be an electronic paper panel, a display device using a cathode ray tube, or various known display panels.

  The above-described display panel can be the same as that used for a general display device, and a specific description thereof will be omitted.

3. Touch Panel The touch panel in the present invention is typically a projection-type capacitive touch panel capable of multi-touch (simultaneous input at multiple points). Any known touch panel of various position detection methods including a position detection method that does not require a transparent electrode such as an induction method and an optical method can be used.

  The touch panel may have some opaque components such as a wiring, a control circuit, and a connector for electrically connecting the wiring and the control circuit on the outer peripheral portion of the display area in the display device. It is preferable that these opaque components are arranged so as to overlap in plan view with the opaque region where the decorating portion is arranged in the decorating member. This is because the opaque components can be hidden by the decorative portion, and the appearance of the display device can be improved.

4. Applications Applications of the display device of the present invention include, for example, a mobile phone such as a smartphone, a portable information terminal such as a tablet PC, a personal computer, a car navigation, a digital camera, an electronic organizer, a game device, a vending machine, an ATM terminal, and a POS. Terminal and the like.

C. Method for Manufacturing Organic EL Display Device The method for manufacturing an organic EL display device according to the present invention is directed to a method for manufacturing a decorative member having a decorative portion formed on a first transparent substrate and adhered on a first glass substrate. A decorative member preparing step of preparing, a sensor electrode substrate laminating step of laminating a sensor electrode substrate having a sensor electrode capable of detecting the position of the touch panel on the decorative member, and a second glass substrate An organic EL substrate preparing step of preparing an organic EL substrate adhered on a material, a laminating step of laminating the sensor electrode substrate and the organic EL substrate laminated on the decorative member, And the decorating member is the decorating member described above.

  The method for manufacturing the organic EL display device of the present invention will be described with reference to the drawings. The method for manufacturing an organic EL display device of the present invention can be performed, for example, by the steps shown in FIGS. First, as shown in FIG. 13A, a decorating member preparing step of attaching the decorating member 1 to the first carrier glass substrate 13 and preparing the decorating member 1 is provided. Next, as shown in FIG. 13B, a sensor electrode substrate laminating step of laminating the sensor electrode substrate on the decorative member is provided. Here, the sensor electrode base material 40 forms the black matrix 4 having an opening on the decorative member 1, and forms the first electrode 6 a and the second electrode 6 b serving as sensor electrodes on the black matrix 4. By doing so, it can be obtained. Subsequently, as shown in FIG. 13C, a second transparent substrate 3 and an organic EL pixel 15 (here, a red pixel 15R, a green pixel 15G, a blue pixel 15B), and an organic EL substrate having a thin film transistor (TFT) wiring 14 is attached to prepare an organic EL substrate 50. Lastly, as shown in FIG. 13D, a bonding step of bonding the sensor electrode base material 40 and the organic EL base material 50 is provided. Can be obtained. Note that the bonding of the sensor electrode base material 40 and the organic EL base material 50 can be performed by the adhesive layer 16.

  In the present invention, a color filter may be provided between the sensor electrode substrate and the organic EL substrate. Further, a circularly polarizing plate may be provided between the decoration member and the sensor electrode base material.

  Hereinafter, the sensor electrode substrate forming step and the organic EL substrate forming step in the method for manufacturing an organic EL display device of the present invention will be described.

1. Decorating Member Preparing Step The decorating member preparing step in the present invention is a step of preparing a decorating member that is adhered on a first glass base material and has a decorative portion formed on a first transparent base material. is there.

  As the first glass substrate used in this step, the same glass substrate used in a general display device manufacturing step can be used. In addition, the first glass substrate used here is a member that can be peeled off at the end of the manufacturing method of the present invention, and thus its thickness and size are not particularly limited.

  Note that the decoration member formed in this step can be the same as the content described in the above section “A. Decoration member”, and thus the description is omitted here.

2. Sensor electrode substrate laminating step The sensor electrode substrate laminating step in the present invention is a step of laminating a sensor electrode substrate having a sensor electrode capable of detecting the position of a touch panel on a decorative member.

  The decoration member, the black matrix, and the sensor electrode formed in this step can be the same as those described in the above section “A. Decoration member”, and thus description thereof will be omitted. .

3. Organic EL Base Material Preparing Step The organic EL base material preparing step in the present invention is a step of preparing an organic EL base material adhered on the second glass base material.

  The organic EL substrate formed in this step is not particularly limited as long as it is a general organic EL substrate, and a known method can be adopted as a production method. The organic EL substrate can be the same as, for example, JP-A-2015-162588, JP-A-2015-072827, and the like, and a description thereof will not be repeated.

4. Laminating Step The laminating step in the present invention is a step of laminating the sensor electrode substrate and the organic EL substrate laminated on the decorative member.

  The bonding in this step can be performed by providing an adhesive layer or the like between the sensor electrode substrate and the organic EL substrate. Specifically, the adhesive layer can be attached by arranging an adhesive layer on the surface of the sensor electrode substrate or the organic EL substrate and pressing the adhesive layer.

  The adhesive layer used in this step can be the same as that used in a general organic EL display device forming step, and thus description thereof is omitted.

5. Other Steps In the present invention, the decorative member preparing step, the sensor electrode base material laminating step, the organic EL base material preparing step, and the bonding step may be performed, and other steps may be performed as necessary. You may have.
For example, when a circularly polarizing plate is provided between the decorative member and the sensor electrode substrate, the circularly polarizing plate is laminated on the decorative member during the decorative member preparing step and the sensor electrode substrate laminating step. A circular polarizing plate laminating step may be provided.
In the case where a color filter is provided between the sensor electrode substrate and the organic EL substrate, a color filter for laminating the color filter on the organic EL substrate is provided between the organic EL substrate preparing step and the bonding step. You may have a lamination process.

  Note that the present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and has substantially the same configuration as the technical idea described in the claims of the present invention, and any device having the same operation and effect can be realized by the present invention. It is included in the technical scope of the invention.

[Examples 1 to 6]
On a transparent substrate (material: triacetylcellulose (TAC), thickness: 40 μm), a decorative portion forming composition having the following composition was applied by a die coating method, and the total light transmittance as shown in Table 1 was obtained. And a decorative portion having a thickness. Thus, the decorative member was formed. As the decorative member forming composition, a photosensitive resin composition having a white pigment or a black pigment (coated carbon) and containing an acrylic resin and an alkali-soluble resin as main components was used.

[Evaluation]
The decorative member obtained in each of Examples 1 to 6 was bent using a DLDMLH-FU sheet-shaped U-shaped repetition tester manufactured by Yuasa System Co., Ltd. under the conditions of a bending radius R = 3 mm, a rotation speed of 120 rpm, and a stroke of 20 mm. A durability test was performed 200,000 times, and thereafter, the decorative portion was evaluated for cracking or peeling. The results are as shown in Table 1 below.
Cracking ○: No cracking △: Slight cracking / peeling ○: No peeling △: Slight peeling

DESCRIPTION OF SYMBOLS 1 ... Decorating member 2 ... Decorating part 2a ... White decorating part 2b ... Black decorating part 3 ... Transparent base material 4 ... Black matrix 5 ... Coloring part 6 ... Sensor electrode 9 ... Circular polarizing plate 20 ... Display panel 40 ... Sensor electrode substrate 50: Organic EL substrate 100: Display device 200: Organic EL display device D: Display area

Claims (9)

A transparent member having flexibility, a decorative member having a decorative portion disposed on the transparent substrate,
The decorating portion has a white decorating portion arranged on the transparent substrate, and a black decorating portion arranged on the white decorating portion,
The white decorative portion is a cured product containing a white pigment in a resin binder containing a photosensitive resin,
The pigment concentration of the white pigment with respect to the total solid content of the white decorative portion is in the range of 50% by mass to 85% by mass,
The total light transmittance of the white decorative portion is 20% or less,
The black decorative portion is a cured product containing a black pigment in a resin binder containing a photosensitive resin,
The pigment concentration of the black pigment with respect to the total solid content of the black decorative portion is in the range of 40% by mass to 85% by mass,
A decorative member, wherein the total light transmittance of the decorative part is 0.02% or less. The thickness of the decorative portion is in the range of 8 μm to 20 μm,
The decorative member according to claim 1, wherein the decorative portion does not crack or peel off after the bending durability test with a bending radius of 3 mm is performed 100,000 times or more. In the display area defined by the decorative portion, a black matrix having a plurality of openings,
The black matrix, decorative member according to claim 1 or claim 2, characterized in that it is constituted by the black decorative portion of the same material. The decorative member according to claim 3 , wherein the opening has a colored portion. The decorating member according to claim 3, further comprising a sensor electrode on the black matrix capable of detecting a position of the touch panel. The addition to the display area defined by the decorative portion, decorative member according to claim 1 or claim 2, characterized in that it has a circularly polarizing plate. On the circularly polarizing plate, a black matrix having a plurality of openings,
The decorative member according to claim 6 , further comprising a sensor electrode on the black matrix, the sensor electrode being capable of detecting a position of the touch panel. A decorating member according to any one of claims 1 to 7 ,
A display device, comprising: a display panel. A decorating member preparing step of preparing a decorating member attached to a first glass substrate and having a decorating portion formed on the first transparent substrate;
A sensor electrode substrate laminating step of laminating a sensor electrode substrate having a sensor electrode capable of detecting the position of the touch panel on the decorative member,
An organic electroluminescent substrate preparing step of preparing an organic electroluminescent substrate adhered on the second glass substrate,
Laminating the sensor electrode substrate laminated on the decorating member, and laminating the organic electroluminescent substrate,
A method of manufacturing an organic electroluminescent display device, wherein the decorative member is the decorative member according to claim 1 or 2 .