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WO2018164464A1 - Élément décoratif et procédé de fabrication associé - Google Patents

Élément décoratif et procédé de fabrication associé Download PDF

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Publication number
WO2018164464A1
WO2018164464A1 PCT/KR2018/002672 KR2018002672W WO2018164464A1 WO 2018164464 A1 WO2018164464 A1 WO 2018164464A1 KR 2018002672 W KR2018002672 W KR 2018002672W WO 2018164464 A1 WO2018164464 A1 WO 2018164464A1
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WO
WIPO (PCT)
Prior art keywords
layer
light
decorative member
light absorption
absorption layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2018/002672
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English (en)
Korean (ko)
Inventor
손정우
장성호
송진숙
황지영
김기환
김용찬
서한민
조필성
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Chem Ltd
Original Assignee
LG Chem Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020170136790A external-priority patent/KR101966851B1/ko
Application filed by LG Chem Ltd filed Critical LG Chem Ltd
Priority to CN201880013135.8A priority Critical patent/CN110325357B/zh
Priority to US16/465,493 priority patent/US10807408B2/en
Priority to EP18763064.5A priority patent/EP3593991A4/fr
Priority to JP2019524921A priority patent/JP7014358B2/ja
Publication of WO2018164464A1 publication Critical patent/WO2018164464A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties

Definitions

  • the present invention relates to a decorative member and a method of manufacturing the same. Specifically, the present invention relates to a decorative member suitable for use in mobile devices or electronic products and a method of manufacturing the same.
  • product design for example, color, shape, and pattern play a big role in providing value to customers.
  • Product preference and price also depend on the design.
  • the expression of color in the existing deco film was intended to be implemented through printing, deposition, and the like. When expressing heterogeneous colors on a single surface, it should be printed two or more times, and when it is desired to apply a variety of colors to a three-dimensional pattern, it is practically difficult to implement.
  • the existing decor film is fixed in color depending on the viewing angle, even if there is a slight change is limited to the degree of difference in color.
  • the present invention is to provide a decorative member that can easily implement a plurality of colors on the same surface, can implement a plurality of colors in a three-dimensional pattern, and can provide a color change according to the viewing angle.
  • One embodiment of the present application is a light reflection layer; And a color development layer including a light absorption layer provided on the light reflection layer, wherein the light absorption layer includes two or more points having different thicknesses.
  • the light absorption layer provides a decorative member, characterized in that it comprises two or more regions of different thickness.
  • the light absorbing layer includes at least one region having an inclined surface having an inclined angle of more than 0 degrees and less than 90 degrees, and the light absorbing layer has a thickness in a region having any one inclined surface. At least one region having a thickness different from.
  • the light absorbing layer includes one or more regions whose thickness gradually changes.
  • the light absorbing layer includes at least one region having an inclined surface having an inclined angle greater than 0 degrees and less than 90 degrees, and the region having at least one inclined surface has a gradual thickness of the light absorbing layer. It has a structure that changes to.
  • the light reflection layer is a metal layer, a metal oxide, a metal nitride, a metal oxynitride layer, a carbon or carbon composite layer, or an inorganic layer.
  • the light absorption layer has an extinction coefficient (k) value of more than 0 and 4 or less, preferably 0.01 to 4 at 400 nm.
  • the substrate may further include a substrate provided on the bottom surface of the light reflection layer or the top surface of the light absorption layer.
  • the decorative member is a household article requiring a decoration of a case or a home appliance case or a collar of a decor film or a mobile device.
  • light is absorbed in each of the incident path and the reflective path when the external light is incident through the color generating layer, and the external light is reflected on the surface of the light absorbing layer and the surface of the light reflecting layer, respectively. Therefore, the constructive interference and destructive interference phenomena occur between the reflected light on the surface of the light absorption layer and the reflected light on the surface of the light reflection layer.
  • Specific colors may be expressed through the phenomenon of light absorption, constructive interference, and destructive interference in the incident path and the reflective path as described above.
  • the color to be expressed has a thickness dependency, it is possible to change the color according to the thickness even when having the same material configuration.
  • the light absorbing layer may have two or more points or regions having different thicknesses on the same surface, thereby enabling a plurality of colors to be expressed, and by forming a color expression layer in the three-dimensional pattern, various colors may be realized in the three-dimensional pattern.
  • the upper surface of the light absorbing layer to have at least one inclined surface can not only implement a change in the color expressed according to the viewing angle, it can be manufactured to have two or more regions of different thicknesses in a simple process.
  • 1 is a schematic diagram for explaining the principle of color expression in the light reflection layer and the light absorption layer structure.
  • 6 to 8 illustrate the top structure of the light absorption layer of the decorative member according to the embodiments of the present application.
  • 9 to 11 is a view showing that the color appearance is different depending on the thickness of the light absorption layer.
  • Figure 16 shows the color observed in the direction perpendicular to the inclined surface of the decorative member prepared in Examples 4 and 5 and Comparative Example 2.
  • 17 to 21 illustrate patterns that can be implemented on the upper surface of the light absorption layer.
  • 22 is a graph showing n and k values of aluminum oxynitride.
  • FIGS. 13 and 16 show values on Lab coordinates of respective colors.
  • point means one location having no area.
  • the above expression is used to indicate that there are two or more points where the thicknesses of the light absorption layers are different from each other.
  • region represents a portion having a certain area.
  • the decorative member is placed on the ground so that the light reflection layer is on the bottom and the light absorption layer is on the top, and both ends of the inclined surface or both ends having the same thickness are vertically divided with respect to the ground, the area having the inclined surface is formed on the inclined surface.
  • An area divided by both ends means an area
  • an area having the same thickness means an area divided by both ends having the same thickness.
  • the "face” or the “region” may be flat, but is not limited thereto, and all or part of the surface may be curved.
  • the shape of the vertical section may include a portion of an arc of a circle or ellipse, a wave structure, a zigzag structure, or the like.
  • the angle formed by the upper surface relative to the ground is greater than 0 degrees and 90 degrees or less. do.
  • the "thickness" of a layer means the shortest distance from the lower surface of the layer to the upper surface.
  • the term "layer” means covering 70% or more of the area in which the layer exists. It means preferably covering at least 75%, more preferably at least 80%.
  • Decorative member is a light reflection layer; And a color development layer including a light absorption layer provided on the light reflection layer, wherein the light absorption layer includes two or more points having different thicknesses.
  • the light absorption layer provides a decorative member, characterized in that it comprises two or more regions of different thickness.
  • the light absorption layer absorbs light at the incident path and the reflection path of the light, and the light is reflected at the surface of the light absorbing layer and at the interface between the light absorbing layer and the light reflecting layer, respectively, so that the two reflected light beams reinforce or cancel each other.
  • the light reflected from the surface of the light absorbing layer may be represented by the surface reflected light, the light reflected from the interface between the light absorbing layer and the light reflecting layer.
  • Figure 1 shows a schematic diagram of such a principle of action. 1 illustrates a structure in which the substrate 101, the light reflection layer 201, and the light absorption layer 301 are stacked in this order, but the substrate is positioned below the light reflection layer, but is not essential.
  • FIGS. 2 and 3. 2 and 3 Examples of the structure according to the exemplary embodiment are shown in FIGS. 2 and 3. 2 and 3, the light absorption layer 301 is provided on the light reflection layer 201, and the light absorption layer has two or more points having different thicknesses from each other. According to FIG. 2, the thicknesses of the light absorption layers 301 at points A and B are different. According to FIG. 3, the thickness of the light absorption layer 301 in region C and region D is different.
  • the light absorbing layer includes at least one region having an inclined surface having an inclined angle of more than 0 degrees and less than 90 degrees, and the light absorbing layer has a thickness in a region having any one inclined surface. At least one region having a thickness different from.
  • Surface characteristics such as the inclination of the upper surface of the light reflection layer may be the same as the upper surface of the light absorption layer.
  • the upper surface of the light absorbing layer may have the same slope as the upper surface of the light reflecting layer.
  • FIG. 4 illustrates a structure of a decorative member having a light absorption layer having an inclined surface on its upper surface.
  • the substrate 101, the light reflection layer 201, and the light absorption layer 301 are laminated, and the thickness t1 in the E region of the light absorption layer 301 is different from the thickness t2 in the F region.
  • the thickness of the light absorbing layer may vary in two surfaces of the triangular structure even when the deposition is performed under the same conditions. Accordingly, the light absorption layer having two or more regions having different thicknesses can be formed by only one process. As a result, the expression color is different depending on the thickness of the light absorption layer. At this time, if the thickness of the light reflection layer is more than a certain amount does not affect the color change.
  • the light absorbing layer includes one or more regions whose thickness gradually changes. According to FIG. 2, the thickness of the light absorbing layer is gradually changed.
  • the light absorbing layer includes at least one region having an inclined surface having an inclined angle greater than 0 degrees and less than 90 degrees, and the region having at least one inclined surface has a gradual thickness of the light absorbing layer. It has a structure that changes to. 5 illustrates a structure of a light absorption layer including a region having an inclined surface at an upper surface thereof. In the region G and H of FIG. 5, the upper surface of the light absorption layer has an inclined surface, and the thickness of the light absorption layer gradually changes.
  • the light absorbing layer includes a first area having a first inclined surface having an inclination angle in a range of 1 to 90 degrees, and has an inclined surface having an upper surface different from the first inclined surface or having a different inclination angle. It may further include a second area having a top surface is horizontal. At this time, the thickness of the light absorption layer may be different from each other in the first region and the second region.
  • the light absorption layer includes a first region having a first inclined surface having an inclination angle in a range of 1 to 90 degrees, and an upper surface thereof is different from the first inclined surface or has a different inclination angle. It may further include two or more regions having an inclined surface or the upper surface is horizontal. In this case, the thickness of the light absorption layer in the first region and the two or more regions may be different from each other.
  • the light absorption layer includes a pattern of an asymmetric structure.
  • the asymmetrical structure means having an asymmetrical structure in at least one side when observed from the top, side, or cross section.
  • the decorative member may express dichroism. Dichroism means that different colors are observed depending on the viewing angle.
  • the color can be represented by CIE L * a * b *, and the color difference can be defined using a distance ( ⁇ E * ab) in L * a * b * space. Specifically, In the range 0 ⁇ E * ab ⁇ 1, the observer cannot see the color difference (Ref. Machine Graphics and Vision 20 (4): 383-411). Therefore, in the present specification, dichroism may be defined as ⁇ E * ab> 1.
  • the light absorbing layer includes a pattern having a convex protrusion or groove on its upper surface.
  • Cone forms include cones, ellipses, or polygonal cones.
  • the shape of the bottom surface of the polygonal pyramid includes a triangle, a square, and a star shape having five or more protruding points.
  • the cone shape may be in the form of a protrusion formed on the upper surface of the light absorbing layer, or may be in the form of a groove formed on the upper surface of the light absorbing layer.
  • the protruding portion has a triangular cross section, and the groove portion has an inverted triangular cross section.
  • the lower surface of the light absorbing layer may have the same shape as the upper surface of the light absorbing layer.
  • the cone-shaped pattern may have an asymmetric structure.
  • dichroism when the pattern of the cone shape is observed from the top surface, dichroism is hardly expressed from the pattern when three or more of the same shape are present when rotated 360 degrees with respect to the vertex of the cone.
  • dichroism when the cone-shaped pattern is observed from the top surface, dichroism may be expressed when two or less identical shapes are present when rotated 360 degrees with respect to the vertex of the cone.
  • Figure 6 shows the top of the cone shape, (a) all shows the cone shape of the symmetrical structure, (b) illustrates the cone shape of the asymmetric structure.
  • the cone shape of the symmetrical structure is a cone-shaped bottom surface which is a circle or regular polygon with the same length of each side, and a vertex of the cone exists on the vertical line of the center of gravity of the bottom surface.
  • the position of the vertex of the cone exists on the vertical line of the point not the center of gravity of the bottom surface, or the bottom surface is a polygon or ellipse of the asymmetric structure to be.
  • the bottom surface is an asymmetric polygon, at least one of sides or angles of the polygon may be designed differently from the rest.
  • the position of the vertex of the cone can be changed.
  • the top of the cone is designed to be positioned on the vertical line of the center of gravity (01) of the bottom surface when viewed from the top, four identical when rotating 360 degrees relative to the vertex of the cone You get a structure (4 fold symmetry).
  • the symmetrical structure is broken by designing the vertex of the cone at position 02 rather than the center of gravity 01 of the floor.
  • the length of one side of the floor is x
  • the moving distance of the vertices of the cone is a and b
  • the height of the cone shape which is the length of the line connected vertically from the vertex of the cone (01 or 02) to the floor, h, bottom and cone
  • the light absorbing layer includes a pattern in which the highest point has a linear protrusion or the lowest point has a linear groove.
  • 18 to 20 show photographs of an example of implementing a protrusion in the form of a line.
  • the linear form may be a straight line, a curved form, or may include both a curve and a straight line.
  • the light absorbing layer includes a pattern having a protrusion or a groove having a top surface cut off in a cone shape.
  • FIG. 21 is a photograph showing an inverted trapezoid groove having an asymmetrical cross section.
  • the cross section of this pattern may be trapezoidal or inverted trapezoidal.
  • dichroism can be expressed by designing the upper surface, the side surface, or the cross section to have an asymmetric structure.
  • the light absorption layer may realize various colors according to the refractive index (n), the extinction coefficient (k) and the thickness (t).
  • FIG. 9 illustrates reflectance for each wavelength according to the thickness of the light absorption layer
  • FIG. 10 illustrates colors implemented accordingly. Specifically, in the case of FIG. 9, it is a reflectance simulation graph for CuO deposition thickness of CuO / Cu, which is data created while changing the thickness of CuO by 10 to 60 nm under the same deposition conditions.
  • 11 is a simulation result showing that different colors are observed according to the viewing angle.
  • 11 is a simulation result of CuON / Al.
  • the thickness of the light absorbing layer is increased by 10 nm from 10 nm to 10 nm, and the incident angle is adjusted at intervals of 15 degrees from 0 degrees to 60 degrees.
  • the light reflecting layer is not particularly limited as long as it is a material capable of reflecting light, but the light reflectance may be determined depending on the material, for example, color is easily implemented at 50% or more. Light reflectance can be measured using an ellipsometer.
  • the light absorption layer preferably has a refractive index n of 0 to 8 at 400 nm, may be 0 to 7, may be 0.01 to 3, and may be 2 to 2.5.
  • the refractive index n may be calculated as sin ⁇ 1 / sin ⁇ 2 ( ⁇ 1 is the angle of light incident on the surface of the light absorption layer, and ⁇ 2 is the angle of refraction of light inside the light absorption layer).
  • the light absorption layer preferably has a refractive index n of 0 to 8 at 380 to 780 nm, may be 0 to 7, may be 0.01 to 3, and may be 2 to 2.5.
  • the light absorption layer has an extinction coefficient k of 400 nm and greater than 0 and 4 or less, preferably 0.01 to 4, 0.01 to 3.5, 0.01 to 3, and 0.1 to 1.
  • the extinction coefficient (k) is -l / 4pI (dI / dx), where the path unit length in the light absorbing layer (dx), e.g., the fraction of dI / I of light intensity per meter multiplied by l / 4p Where l is the wavelength of light.
  • the light absorption layer has an extinction coefficient k of 380 to 780 nm greater than 0 and 4 or less, preferably 0.01 to 4, 0.01 to 3.5, 0.01 to 3, and 0.1 to 1.
  • the extinction coefficient k is in the above range in the entire visible light wavelength range of 400 nm, preferably 380 to 780 nm, it may serve as a light absorbing layer within the visible light range.
  • the spectrum of absorbing light is different.
  • the absorption wavelength band is fixed, and only a phenomenon in which the amount of absorption changes with a change in coating thickness occurs.
  • a thickness change of at least several micrometers or more is required to adjust the light absorption amount.
  • the wavelength band of absorbing light changes.
  • the light reflection layer may be a metal layer, a metal oxynitride layer, or an inorganic layer.
  • the light reflection layer may be composed of a single layer, or may be composed of two or more multilayers.
  • the light reflection layer may be formed of indium (In), titanium (Ti), tin (Sn), silicon (Si), germanium (Ge), aluminum (Al), copper (Cu), nickel (Ni), vanadium ( V), tungsten (W), tantalum (Ta), molybdenum (Mo), neodymium (Nb), iron (Fe), chromium (Cr), cobalt (Co), gold (Au) and silver (Ag) It may be a single layer or multiple layers comprising one or two or more materials, oxides, nitrides or oxynitrides thereof, one or two or more of carbon and carbon composites.
  • the light reflection layer may include two or more alloys selected from the above materials, oxides, nitrides or oxynitrides thereof.
  • the light reflection layer may include two or more alloys selected from the metals. More specifically, the light reflection layer may include molybdenum, aluminum or copper.
  • the light reflection layer may be manufactured using an ink containing carbon or a carbon composite to implement a high resistance reflective layer. Carbon or carbon composites include carbon black and CNT.
  • the ink containing the carbon or carbon composite material may include the above-described materials or oxides, nitrides or oxynitrides thereof, such as indium (In), titanium (Ti), tin (Sn), silicon (Si), germanium ( Ge).
  • Aluminum (Al), Copper (Cu), Nickel (Ni), Vanadium (V), Tungsten (W), Tantalum (Ta), Molybdenum (Mo), Neodymium (Nb), Iron (Fe), Chromium (Cr), One or two or more oxides selected from cobalt (Co), gold (Au), and silver (Ag) may be included.
  • a curing process may be further performed.
  • the light reflection layer includes two or more kinds of materials
  • two or more kinds of materials may be formed using a single process, for example, a method of deposition or printing.
  • a method of forming a layer thereon from one or more materials can be used.
  • the ink containing carbon may be printed and cured to form a light reflection layer.
  • the ink may further include an oxide such as titanium oxide and silicon oxide.
  • the light absorption layer may be a single layer or a multilayer of two or more layers.
  • the light absorption layer may be made of a material having an extinction coefficient k at 380 to 780 nm, that is, a material having an extinction coefficient greater than 0 and 4 or less, preferably 0.01-4.
  • the light absorption layer may include one or two or more selected from the group consisting of metals, metalloids, and oxides, nitrides, oxynitrides and carbides of metals or metalloids. Oxides, nitrides, oxynitrides or carbides of the metal or metalloid can be formed by deposition conditions set by those skilled in the art.
  • the light absorption layer may include the same metal, metalloid, two or more alloys or oxynitrides as the light reflection layer.
  • the light absorption layer may include indium (In), titanium (Ti), tin (Sn), silicon (Si), germanium (Ge), aluminum (Al), copper (Cu), nickel (Ni), vanadium (V). , Tungsten (W), tantalum (Ta), molybdenum (Mo), neodymium (Nb), iron (Fe), chromium (Cr), cobalt (Co), gold (Au) and silver (Ag) Or a single layer or multiple layers comprising two or more materials or oxides, nitrides or oxynitrides thereof.
  • the light absorption layer may include one or two or more selected from copper oxide, copper nitride, copper oxynitride, aluminum oxide, aluminum nitride, aluminum oxynitride, and molybdenum titanium oxynitride.
  • the light absorbing layer includes silicon (Si) or germanium (Ge).
  • the light absorption layer made of silicon (Si) or germanium (Ge) has a refractive index (n) of 0 to 8 and may be 0 to 7 at 400 nm, and an extinction coefficient (k) of more than 0 to 4 or less, preferably 0.01 to 4, and may be 0.01 to 3 or 0.01 to 1.
  • the light absorption layer includes one or two or more selected from copper oxide, copper nitride, copper oxynitride, aluminum oxide, aluminum nitride, aluminum oxynitride and molybdenum titanium oxynitride.
  • the light absorption layer may have a refractive index n of 1 to 3, for example, 2 to 2.5 at 400 nm, and an extinction coefficient k of greater than 0 and 4 or less, preferably 0.01 to 2.5, preferably 0.2 to 2.5, More preferably, it may be 0.2 to 0.6.
  • the light absorption layer is AlOxNy (x> 0, y> 0).
  • the light absorption layer may be AlOxNy (0 ⁇ x ⁇ 1.5, 0 ⁇ y ⁇ 1).
  • the light absorption layer is AlOxNy (x> 0, y> 0), the number of each atom satisfies the following equation for the total number of atoms 100%.
  • the light absorption layer may be made of a material having an extinction coefficient (k) at 400 nm, preferably 380 to 780 nm, for example, the light absorption layer / light reflection layer is CuO / Cu, CuON / Cu, CuON / Al, AlON / Al, AlN / AL / AlON / Cu, AlN / Cu and the like.
  • the thickness of the light reflection layer can be determined according to the desired color in the final structure, for example 1 nm or more, preferably 25 nm or more, such as 50 nm or more, preferably 70 nm or more.
  • the thickness of the light absorption layer may be 5 to 500 nm, for example, 30 to 500 nm.
  • the difference in thickness of each region of the light absorption layer is 2 ⁇ 200nm, it can be determined according to the desired color difference.
  • the substrate may further include a substrate provided on the bottom surface of the light reflection layer or the top surface of the light absorption layer.
  • Surface characteristics, such as the inclination of the upper surface of the substrate may be the same as the upper surface of the light reflection layer and the light absorption layer. This is because the light reflection layer and the light absorption layer is formed by the deposition method, the substrate, the light reflection layer and the light absorption layer may have an inclined surface of the same angle.
  • the above structure may be implemented by forming an inclined surface or a three-dimensional structure on the upper surface of the substrate, and depositing the light reflection layer and the light absorption layer thereon in order, or depositing the light absorption layer and the light reflection layer in order.
  • forming the inclined surface or the three-dimensional structure on the surface of the substrate may be produced by forming a pattern on the ultraviolet curable resin and curing using ultraviolet light, or by a method of processing with a laser.
  • the decorative member may be a case of a decor film or a mobile device.
  • the decorative member may further include an adhesive layer as necessary.
  • the material of the base material is not particularly limited, and when the inclined surface or the three-dimensional structure is formed by the above method, UV-curable resins known in the art may be used.
  • a protective layer may be further provided on the light absorbing layer.
  • an adhesive layer may be further provided on the opposite side of the substrate provided with the light absorption layer or the light reflection layer.
  • This adhesive layer may be an optically clear adhesive (OCA) layer.
  • OCA optically clear adhesive
  • a release liner for protection may be further provided as necessary.
  • the deposition of the sputtering method is mentioned as an example of a method of forming the light reflection layer and the light absorption layer
  • various methods of manufacturing a thin film may be applied as long as it can have a configuration and characteristics according to the embodiments described herein. Do. For example, evaporation deposition, chemical vapor deposition (CVD), wet coating, or the like can be used.
  • the pattern was formed in a repeating structure of the asymmetric prism structure as shown in FIG. Samples were prepared at 20 ° (Example 3). At this time, the pitch of the patterns was 100 micrometers and the height of the pattern was 25 micrometers. Light is incident on the substrate side of the obtained sample, and the light passing through the light absorption layer and reflected by the light reflection layer can be observed on the substrate side. The thickness and color of the light absorption layer observed from the obtained sample are shown in FIG. 13. The n and k values of the aluminum oxynitride layer are described in FIG. 22.
  • a sample was prepared in the same manner as in Example 1-3 except that both sides of the pattern were 60 ° as shown in FIG. 12, and the thicknesses of the light absorption layers were all formed the same.
  • Example 1 The colors of Examples 1 to 3 and Comparative Example 1 are shown in FIG. 13.
  • Example 1 the left and right colors were similar to the yellow series, but the change in the red tone was confirmed on the left side.
  • Example 2 the color changes to purple tones as the angle of the left side decreases.
  • Example 3 appeared darker purple than Example 2.
  • Comparative Example 1 it was confirmed that the left and right colors of the yellow series were the same.
  • the deposition thickness of the light absorption layer on the left inclined plane was 19.0 nm and the deposition thickness of the light absorption layer on the right inclined plane was 12.2 nm based on the vertex of the triangle of the cross section of the light absorption layer.
  • the photograph of the color of the direction perpendicular to the inclined surface of the obtained sample is shown in FIG.
  • the pattern was formed in the same manner as in Example 4 except that the pattern was formed to have a bilaterally symmetric inclined surface as shown in FIG. 15, and the deposition thickness of the light absorption layer on the inclined surface of the light absorption layer was uniformed to 6.3 nm.
  • the photograph of the color of the direction perpendicular to the inclined surface of the obtained sample is shown in FIG.

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Abstract

La présente invention concerne un élément de décoration comprenant : une couche de réflexion de lumière ; et une couche d'expression de couleur comportant une couche d'absorption de lumière disposée sur la couche de réflexion de lumière, la couche d'absorption de lumière comprenant au moins deux points qui ont des épaisseurs différentes.
PCT/KR2018/002672 2017-03-06 2018-03-06 Élément décoratif et procédé de fabrication associé Ceased WO2018164464A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201880013135.8A CN110325357B (zh) 2017-03-06 2018-03-06 装饰构件
US16/465,493 US10807408B2 (en) 2017-03-06 2018-03-06 Decoration member and manufacturing method therefor
EP18763064.5A EP3593991A4 (fr) 2017-03-06 2018-03-06 Élément décoratif et procédé de fabrication associé
JP2019524921A JP7014358B2 (ja) 2017-03-06 2018-03-06 装飾部材およびその製造方法

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JP2021513675A (ja) * 2018-06-15 2021-05-27 エルジー・ケム・リミテッド 装飾部材
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CN109348660A (zh) * 2018-11-16 2019-02-15 昇印光电（昆山）股份有限公司 装饰片及消费电子产品盖板

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