WO2016039047A1 - 積層構造体、タッチパネル、タッチパネル付き表示装置およびその製造方法 - Google Patents
積層構造体、タッチパネル、タッチパネル付き表示装置およびその製造方法 Download PDFInfo
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- WO2016039047A1 WO2016039047A1 PCT/JP2015/072112 JP2015072112W WO2016039047A1 WO 2016039047 A1 WO2016039047 A1 WO 2016039047A1 JP 2015072112 W JP2015072112 W JP 2015072112W WO 2016039047 A1 WO2016039047 A1 WO 2016039047A1
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- Prior art keywords
- laminated structure
- touch panel
- surface portion
- conductive layer
- wiring
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/047—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using sets of wires, e.g. crossed wires
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
Definitions
- the present invention relates to a laminated structure having a three-dimensional shape, a touch panel having the laminated structure, a display device with a touch panel, and a method for manufacturing the same.
- the present invention relates to a laminated structure that can be thinned, a touch panel, a display device with a touch panel, and a manufacturing method thereof.
- touch panels have been increasingly used as input devices for portable electronic devices, such as smartphones or tablet personal computers. These devices are required to have high portability, operability, and design. For example, by using a device having a curved surface shape, it can be used by being attached to a part of the body. Further, for example, by providing the input part not only on the display screen but also on the side surface or the ridge line part, it is possible to improve the operability even in a small device. If the touch sensor function can be provided to the exterior cover of the portable device, the number of parts can be reduced, and the device can be downsized and the portability can be improved. Furthermore, if the shape of the touch panel can be freely designed three-dimensionally, the device can be designed freely, and a device with high design properties can be manufactured.
- the conventional touch panel has a planar shape and the input surface is limited, it is necessary to combine a plurality of input devices in order to realize the functions as described above, resulting in limitations on the shape or size of the device. Therefore, it was difficult to implement.
- a technique for processing a touch panel three-dimensionally has attracted attention.
- the shape of a touch sensor film formed by applying a conductive layer to a flexible polymer film substrate is three-dimensionally deformed by a mold or the like, and then a resin substrate such as polycarbonate is used.
- a resin substrate such as polycarbonate
- Techniques for integrating with materials are known.
- the conductive layer is made of a metal oxide thin film, such as a conventional ITO (Indium Tin Oxide) transparent conductive film, a crack is generated by the processing and the wire breaks. It was not suitable for general processing. If the conductive film is of a type having a mesh structure of fine metal wires, even if deformation such as bending or stretching is performed, disconnection hardly occurs, so that three-dimensional processing can be realized.
- Patent Document 1 describes a three-dimensional portable terminal having a main screen on a surface and a sub-screen on a side surface bent with respect to the surface.
- the touch screen function is also provided on the sub screen, icons and the like are displayed on the sub screen, and the portable terminal can be operated by touching the icon on the sub screen.
- Wiring for connecting the sensor electrode for touch detection to the electric circuit for drive control is arranged around the input area of the touch panel.
- This wiring usually does not participate in the touch function itself, and has a certain line width in order to reduce the wiring resistance value. It is provided in the part that is not visible from the outside.
- the region where the peripheral wiring is arranged is not a region having a specific function, there is a high demand for reducing the space as much as possible from the viewpoints of downsizing, thinning, and design of the product.
- the touch sensor function is provided on the side surface portion as in the three-dimensional portable terminal disclosed in Patent Document 1, the peripheral wiring portion is similarly disposed on the side surface portion. From the viewpoint of reducing the thickness of products with touch panels, it is not preferable.
- Patent Document 1 no consideration is given to the above-described peripheral wiring portion wiring. For this reason, there is a demand for the development of a touch panel that can be thinned in a final product form in a touch panel having a touch input function on a plane part and a side part.
- An object of the present invention is to solve the above-described problems based on the prior art, have a three-dimensional shape, and can be thinned even when a side surface portion has a touch sensor function, a touch panel, a display device with a touch panel and its It is to provide a manufacturing method.
- the present invention is a laminated structure having a three-dimensional shape and an optically transparent region, and is a conductive structure composed of thin metal wires on a flexible transparent substrate.
- a transparent conductive member having at least one layer, wiring formed on the transparent substrate and electrically connected to the conductive layer, and a cover member for protecting the transparent conductive member,
- the flat surface portion, the side surface portion, and the overhang portion are composed of at least a flat surface portion, a side surface portion that is continuously bent to the flat surface portion, and an overhang portion that is continuous with the side surface portion and bent with respect to the side surface portion.
- the flat surface portion and the side surface portion are formed of a cover member and a transparent conductive member
- the overhang portion is formed of at least a transparent conductive member
- the wiring is routed to at least the overhang portion, Connected to the flexible wiring member at the tip of the overhang It is to provide a laminate structure characterized Rukoto.
- the overhang portion is composed only of a transparent conductive member.
- the overhang portion is preferably composed of a cover member and a transparent conductive member.
- the side surface portions are preferably provided on both sides of the flat surface portion, and the overhang portions are preferably provided on one side surface portion.
- the overhanging portion is preferably provided so as to face the flat portion and substantially parallel to the flat portion. It is preferable to have an optically transparent pressure-sensitive adhesive layer between the transparent conductive member and the cover member.
- the wiring member is connected to an external device. It is preferable that the transparent conductive member is disposed inside the three-dimensional shape with respect to the cover member. Moreover, it is preferable that a conductive layer has the conductive pattern of the mesh structure comprised by the metal fine wire. For example, the conductive layer is formed on both surfaces of the transparent substrate. For example, the conductive layer is formed on one side of the transparent substrate, and two transparent substrates each having the conductive layer formed on one side are stacked.
- the present invention provides a touch panel having the laminated structure of the present invention. It is an object of the present invention to provide a display device with a touch panel, which has the laminated structure of the present invention and a display module housed in a recess composed of a planar portion, a side surface portion, and an overhang portion of the laminated structure. It is preferable that a protrusion for positioning the display module is provided on the projecting portion.
- the present invention is a method for manufacturing a touch panel having a laminated structure, wherein the flat surface portion, the side surface portion formed by bending the flat surface portion continuously, the continuous side surface portion, and the side surface portion.
- a method for manufacturing a touch panel is provided.
- the overhanging portion is formed of a transparent conductive member, or a cover member and a transparent conductive member.
- the display module is attached by sliding with respect to the recess.
- a laminated structure a touch panel, a display device with a touch panel, and a method for manufacturing the same, which can have a three-dimensional shape and can be thinned even when the side surface portion has a touch sensor function.
- FIG. 1 It is a typical perspective view which shows the display apparatus with a touchscreen which has the laminated structure of embodiment of this invention.
- FIG. 1 is principal part typical sectional drawing of the display apparatus with a touch panel shown in FIG. 1
- FIG. 2 is principal part typical sectional drawing of the other example of the display apparatus with a touch panel of embodiment of this invention. is there.
- A) is a schematic diagram which shows the laminated body of the laminated structure of embodiment of this invention
- (b) is typical sectional drawing which shows an example of a transparent conductive member
- (c) is this invention. It is a schematic diagram which shows the modification of an example of the laminated body of the laminated structure of embodiment.
- (A) is a schematic diagram which shows the other example of the laminated body of the laminated structure of embodiment of this invention
- (b) is typical sectional drawing which shows the other example of a transparent conductive member
- c) is a schematic diagram showing a modification of the laminated body of the laminated structure according to the embodiment of the present invention. It is a schematic diagram which shows an example of arrangement
- FIG. 1 It is a schematic diagram which shows an example of the 2nd conductive pattern of the 2nd conductive layer of the laminated body of the laminated structure of embodiment of this invention. It is a schematic diagram which shows the combination pattern obtained by arrange
- (A)-(c) is a schematic diagram which shows the 1st example of the manufacturing method of the display apparatus with a touchscreen of embodiment of this invention in process order.
- (A)-(c) is a schematic diagram which shows the 2nd example of the manufacturing method of the display apparatus with a touchscreen of embodiment of this invention in order of a process.
- (A) And (b) is a schematic diagram which shows the 3rd example of the manufacturing method of the display apparatus with a touchscreen of embodiment of this invention in process order.
- transparent means that the light transmittance is at least 60% or more, preferably 80% or more, more preferably 90% or more, and even more preferably 95, at a visible light wavelength (wavelength of 400 nm to 800 nm). % Or more.
- FIG. 1 is a schematic perspective view showing a display device with a touch panel having a laminated structure according to an embodiment of the present invention.
- 2A is a schematic cross-sectional view of a main part of the touch panel shown in FIG. 1
- FIG. 2B is a schematic cross-sectional view of the main part of another example of the display device with a touch panel according to the embodiment of the present invention.
- the laminated structure of the present invention can be used for a touch panel, for example.
- a display device 10 with a touch panel having the laminated structure 12 illustrated in FIG. 1 will be described.
- the controller 14 is an external device of the laminated structure 12 and is configured by a known device used for detection of a touch panel. If the touch panel is a capacitive type, a capacitive controller can be used as appropriate, and if the touch panel is a resistive film type, a resistive film type controller can be used as appropriate.
- the laminated structure 12 includes a laminated body 20, a cover member 24, and an FPC 15, and has a three-dimensional shape.
- the laminated body 20 is disposed inside the three-dimensional shape with respect to the cover member 24.
- the laminated structure 12 includes at least a flat surface portion 12a, two side surface portions 12b and 12c formed continuously on the flat surface portion 12a, and an overhang portion 12e formed continuously on one of the side surface portions 12c.
- the two side portions 12b and 12c are bent at both ends of the flat portion 12a.
- the bent portion of the flat surface portion 12a is referred to as a bent portion B.
- the overhanging portion 12e is formed by bending the end of the side surface portion 12c.
- a portion where the side surface portion 12c is bent is referred to as a bent portion Bf.
- a display module 18 is disposed in a concave portion 12d composed of a flat surface portion 12a, side surface portions 12b and 12c, and an overhang portion 12e of the laminated structure 12, with the display surface 18a facing the flat surface portion 12a.
- the end of the display module 18 is inserted into a region 12f surrounded by the side surface portion 12c and the overhang portion 12e.
- the overhanging portion 12e extends around the lower surface 18b of the display module 18.
- the controller 14 is provided on the back surface 18 b of the display module 18.
- the laminated structure 12 includes an optically transparent region in order to recognize an image displayed on the display module 18.
- the display module 18 can be attached to the laminated structure 12 by attaching an optically transparent adhesive (OCA), which will be described later, or an optically transparent resin (OCR) to the display surface 18a. Moreover, you may attach to the laminated structure 12 without using an optically transparent adhesive (OCA) and optically transparent resin (OCR). In this case, the structure is called an air gap. Since the end of the display module 18 is inserted into the region 12f, it is preferable to provide a protrusion (not shown) for positioning the display module 18 on the overhang portion 12e.
- OCA optically transparent adhesive
- OCR optically transparent resin
- an engagement protrusion for engaging the back surface 18b and the overhanging portion 12e, for example, a concave portion (not shown) and a convex portion (not shown) are provided. It is good also as a structure.
- the laminated body 20 of the laminated structure 12 has a three-dimensional shape corresponding to the flat surface portion 12a, the side surface portions 12b and 12c, and the overhanging portion 12e.
- the laminate 20 is attached to the back surface of the cover member 24 with an optically transparent adhesive layer 22, for example.
- the flat surface portion 12 a, the side surface portions 12 b and 12 c, and the overhanging portion 12 e are each composed of the laminated body 20 and the cover member 24.
- the adhesive layer 22 is not particularly limited as long as it is optically transparent and can adhere the laminate 20 to the cover member 24.
- an optically transparent resin (OCR) such as an optically transparent adhesive (OCA) or a UV curable resin can be used.
- OCR optically transparent resin
- OCA optically transparent adhesive
- the cover member 24 is for protecting the laminate 20, and is made of a resin material such as polycarbonate, for example.
- the X direction and the Y direction shown in FIG. 1 are orthogonal to each other.
- a plurality of first conductive layers 40 extending in the X direction are arranged at intervals in the Y direction.
- the 1st conductive layer 40 is arrange
- a plurality of second conductive layers 50 extending in the Y direction are arranged at intervals in the X direction.
- the second conductive layer 50 is provided on the flat surface portion 12a, the side surface portion 12b, and the side surface portion 12c. Thereby, the side surface parts 12b and 12c can be provided with a touch sensor function.
- Each first conductive layer 40 is electrically connected to a terminal portion (not shown) at one end thereof. Further, each terminal portion is electrically connected to the first wiring 42.
- Each first wiring 42 is routed to one side surface portion 12c of the two side surface portions 12b and 12c, and further routed to the distal end 13 of the overhanging portion 12e, so that a terminal 44 provided at the distal end 13 is provided. (See FIG. 5).
- An FPC 15 (see FIG. 5) provided at the tip 13 is connected to the terminal 44 (see FIG. 5), and the FPC 15 is connected to the controller 14.
- Each second conductive layer 50 is electrically connected to a terminal portion (not shown) at one end thereof. Each terminal portion is electrically connected to the conductive second wiring 52. Each of the second wirings 52 is routed to one side surface portion 12c, further routed to the tip 13 of the overhanging portion 12e, and collectively connected to a terminal 54 provided on the tip 13. An FPC 15 provided at the tip 13 is connected to the terminal 54, and the FPC 15 is connected to the controller 14.
- the first conductive layer 40, the first wiring 42 and the terminal 44, and the first conductive layer 40, the first wiring 42 and the terminal 44 will be described in detail later.
- the laminated structure 12 and the controller 14 constitute a touch panel 16.
- the first wiring 42 of the first conductive layer 40 and the second wiring 52 of the second conductive layer 50 are respectively routed to the tip 13 of the overhanging portion 12e through the side surface portion 12c, and the first wiring 42
- the thickness of the laminated structure 12 can be reduced to a length in the direction in which the first conductive layer 40 of the side surface portion 12c extends, and thus the thickness can be reduced.
- the peripheral wiring is concentrated on one side surface portion 12c side, so that the design is not restricted.
- a space for attaching the FPC is required. However, such a space can be made unnecessary by concentrating the peripheral wiring.
- any peripheral wiring can be used as long as it is routed around at least the overhanging portion 12e and connected to the FPC at the tip 13 of the overhanging portion 12e.
- the wiring path and the like are not particularly limited.
- the first conductive layer 40 straddling the side portions 12b and 12c is difficult to detect correctly, and the adjustment for detection is complicated. Therefore, the first wiring 42 is arranged so as to be as short as possible.
- the laminated structure 12 that is difficult to be affected and the display device with a touch panel 10 having the laminated structure 12 can be obtained.
- the wiring distance of the FPC 15 to the controller 14 can be shortened. Thereby, it becomes difficult to receive the influence of the electrical noise in a connection wiring part, and the occurrence frequency of the malfunction of the display apparatus 10 with a touch panel can be reduced.
- the cover member 24 is provided up to the overhanging portion 12e, and the overhanging portion 12e is composed of the laminated body 20 and the cover member 24. It is not limited. As illustrated in FIG. 2B, the overhanging portion 12 e may be configured by only the laminated body 20 without providing the cover member 24 in the overhanging portion 12 e. With this configuration, the overhanging portion 12e is not required for the cover member 24, the shape can be simplified as compared with FIG. 2A, and molding can be facilitated.
- Fig.3 (a) is a schematic diagram which shows the laminated body of the laminated structure of embodiment of this invention, (b) is typical sectional drawing which shows an example of a transparent conductive member.
- the laminated body 20 has a three-dimensional shape like the laminated structure 12, but in FIGS. 3A and 3B, the laminated body 20 is shown in a planar shape to show the configuration of the laminated body 20.
- the laminated body 20 is configured by, for example, laminating the protective member 32 and the transparent conductive member 30 in this order from the bottom.
- the transparent conductive member 30 corresponds to the touch sensor portion of the display device 10 with a touch panel.
- the transparent conductive member 30 has a plurality of conductive layers composed of conductive thin metal wires 38 (see FIG. 3B) on both sides of a transparent substrate 36 having flexibility (see FIG. 3B). It is formed.
- the first conductive layer 40 composed of the fine metal wires 38 is formed on the surface 36 a of the transparent substrate 36, and the fine metal wires 38 are formed on the back surface 36 b of the transparent substrate 36.
- a second conductive layer 50 is formed.
- the first conductive layer 40 and the second conductive layer 50 are arranged to face each other and to be orthogonal in a plan view.
- the first conductive layer 40 and the second conductive layer 50 are for detecting contact.
- the conductive patterns of the first conductive layer 40 and the second conductive layer 50 are not particularly limited, and may have a bar shape or a mesh structure. An example of the conductive pattern will be described later.
- the first conductive layer 40 and the first conductive layer 40 are formed even when the transparent substrate 36 contracts.
- the positional deviation between the two conductive layers 50 can be reduced.
- a first wiring 42 connected to the first conductive layer 40 and a terminal 44 to which the first wiring 42 is connected are formed on the surface 36a of the transparent substrate 36.
- a second wiring 52 connected to the second conductive layer 50 and a terminal 54 connected to the second wiring 52 are formed on the back surface 36b of the transparent substrate 36.
- the protection member 32 is for protecting the transparent conductive member 30, particularly any one of the conductive layers, and is provided so as to be in contact with the second conductive layer 50, for example.
- the protection member 32 has the same three-dimensional shape as the laminated structure 12.
- the configuration of the protective member 32 is not particularly limited as long as it can protect the transparent conductive member 30, particularly any one of the conductive layers.
- glass, polycarbonate (PC), polyethylene terephthalate (PET), or the like can be used.
- the protective member 32 can also serve as a touch surface of the touch panel. In this case, the protective member 32 fulfills the function of the cover member 24 described above, and the cover member 24 becomes unnecessary.
- the laminate 20 shown in FIGS. 3A and 3B has a configuration of a protective member 32 / second conductive layer 50 / transparent substrate 36 / first conductive layer 40.
- FIG. The transparent conductive member 30 is configured by the second conductive layer 50 / transparent substrate 36 / first conductive layer 40.
- the transparent conductive member 30 and the protective member 32 can constitute the flat surface portion 12a, the side surface portions 12b and 12c, and the overhang portion 12e of the laminated structure 12.
- the transparent conductive member 30 and the protective member 32 may constitute the flat surface portion 12a and the side surface portions 12b and 12c of the laminated structure 12, and the transparent conductive member 30 may constitute the overhang portion 12e.
- the transparent substrate 36 has flexibility and electrical insulation.
- the transparent substrate 36 supports the first conductive layer 40 and the second conductive layer 50.
- a plastic film, a plastic plate, a glass plate, or the like can be used as the transparent substrate 36.
- Plastic films and plastic plates include, for example, polyesters such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), polyethylene (PE), polypropylene (PP), polystyrene, ethylene vinyl acetate (EVA), and cycloolefin polymer (COP).
- the fine metal wires 38 constituting the first conductive layer 40 and the second conductive layer 50 are not particularly limited, and are formed of, for example, ITO, Au, Ag, or Cu.
- the fine metal wires 38 may be made of ITO, Au, Ag, or Cu and further containing a binder.
- the binder By including the binder, the fine metal wires 38 are easily bent and the bending resistance is improved. For this reason, it is preferable to comprise the 1st conductive layer 40 and the 2nd conductive layer 50 with the conductor containing a binder.
- a binder what is used for the wiring of an electroconductive film can be used suitably, For example, what is described in Unexamined-Japanese-Patent No. 2013-149236 can be used.
- the line width of the fine metal wire 38 is not particularly limited, but is preferably 30 ⁇ m or less, more preferably 15 ⁇ m or less, further preferably 10 ⁇ m or less, particularly preferably 7 ⁇ m or less, most preferably 4 ⁇ m or less, and preferably 0.5 ⁇ m or more. 0 ⁇ m or more is more preferable. If it is the above-mentioned range, the 1st conductive layer 40 and the 2nd conductive layer 50 can be made low resistance comparatively easily.
- the line width of the thin metal wire 38 is preferably 500 ⁇ m or less, more preferably 50 ⁇ m or less, and particularly preferably 30 ⁇ m or less. If it is the above-mentioned range, a low-resistance touch panel electrode can be formed comparatively easily.
- the peripheral wiring in the conductive film for a touch panel can be a mesh pattern electrode, and a preferable line width in that case is the above-described conductive layer. It is the same as the preferable line width of the thin metal wire 38 to be adopted.
- the thickness of the thin metal wire 38 is not particularly limited, but is preferably 0.01 ⁇ m to 200 ⁇ m, more preferably 30 ⁇ m or less, further preferably 20 ⁇ m or less, particularly preferably 0.01 ⁇ m to 9 ⁇ m, 0 Most preferably, the thickness is from 05 ⁇ m to 5 ⁇ m. If it is the above-mentioned range, a touch panel electrode excellent in durability can be formed comparatively easily with a low resistance electrode.
- FIG. 3A and 3B is not limited to the configuration of the stacked body 20, and for example, the stacked body 20 a illustrated in FIG. 3C is also illustrated in FIGS. 4A and 4B.
- the laminated body 20b shown may be sufficient.
- FIG.3 (c) is a schematic diagram which shows the modification of an example of the laminated body of the laminated structure of embodiment of this invention
- Fig.4 (a) is a laminated structure of embodiment of this invention. It is a schematic diagram which shows the other example of this laminated body
- (b) is typical sectional drawing which shows the other example of a transparent conductive member.
- the laminated body 20a and the laminated body 20b constitute the laminated structure 12 and have the same three-dimensional shape as the laminated structure 12. However, like the laminated body 20, FIG. 4 (a) and 4 (b), the structures of the stacked bodies 20a and 20b are shown in a planar shape to show the structure.
- the laminated body 20a shown in FIG. 3C has an adhesive layer 34 between the protective member 32 and the transparent conductive member 30 as compared with the laminated body 20 shown in FIG.
- the members 32, the adhesive layer 34, the transparent conductive member 30, the adhesive layer 34, and the protective member 32 are stacked in that order, and the other configurations are shown in FIGS. 3 (a) and 3 (b). Since it is the structure similar to the laminated body 20 shown in (2), the detailed description is abbreviate
- the adhesive layer 34 adheres the protection member 32 to the transparent conductive member 30 and is configured to be optically transparent.
- the adhesive layer 34 is not particularly limited as long as it is optically transparent and can adhere the protective member 32 to the transparent conductive member 30.
- an optically transparent resin OCR
- OCA optically transparent adhesive
- UV (Ultraviolet) curable resin can be used.
- optically transparent is the same as the above-mentioned definition of transparency.
- the form of the adhesive layer 34 is not particularly limited, and may be formed by applying an adhesive, or an adhesive sheet may be used.
- the laminated body 20b shown in FIGS. 4A and 4B is different from the laminated body 20 shown in FIGS. 3A and 3B in that the configuration of the transparent conductive member 30a is different. Since it is the same structure as the laminated body 20 shown to Fig.3 (a), (b), the detailed description is abbreviate
- the transparent conductive member 30a in the transparent conductive member 30a, the first conductive layer 40 composed of the fine metal wires 38 is formed on the surface 36a of the transparent substrate 36, and the metal is formed on the surface 36a of another transparent substrate 36.
- a second conductive layer 50 constituted by the thin wires 38 is formed.
- the transparent conductive member 30 a is obtained by arranging an optically transparent adhesive layer (not shown) on the second conductive layer 50 and laminating two transparent substrates 36.
- an optically transparent adhesive layer not shown
- stacked what formed the conductive layer in one transparent substrate 36 may be sufficient.
- the stacked body 20b may have the structure of the stacked body 20c shown in FIG.
- FIG.4 (c) is a schematic diagram which shows the modification of the laminated body of the laminated structure of embodiment of this invention.
- the laminated body 20c has the same configuration as the laminated body 20b shown in FIGS. 4A and 4B except that the adhesive layer 34 is provided between the transparent conductive member 30a and the protective member 32. Detailed description is omitted.
- the adhesive layer 34 of the laminated body 20c has the same configuration as the adhesive layer 34 of the laminated body 20a shown in FIG. 3C, detailed description thereof is omitted.
- the transparent conductive member 30 of the laminated body 20a and the transparent conductive member 30a of the laminated bodies 20b and 20c described above are, for example, the planar portion 12a and the side surface of the laminated structure 12 with the transparent conductive member 30 and the protective member 32.
- the transparent conductive member 30 and the protective member 32 form the flat surface portion 12a and the side surface portions 12b and 12c, and the transparent conductive member 30 extends.
- the part 12e can also be configured.
- the transparent conductive member 30 of the above-described laminates 20 and 20a and the transparent conductive member 30a of the above-described laminates 20b and 20c may all protrude from the protective member 32. What has the adhesive layer 34 may protrude from the protective member 32 and the adhesive layer 34. Thereby, connection of FPC15 to the above-mentioned terminal 44 and terminal 54 can be made easy.
- FIG. 5 is a schematic diagram illustrating an example of the arrangement of the first conductive layer and the first wiring in the multilayer structure of the multilayer structure according to the embodiment of the present invention.
- the stacked body 20 has a three-dimensional shape.
- the stacked body 20 constituting the stacked structural body 12 is illustrated in a plan view.
- a region 21 a sandwiched between two bent portions B corresponds to the flat portion 12 a of the laminated structure 12
- regions 21 b and 21 c outside the bent portion B are side portions of the laminated structure 12. 12b and 12c
- the region 21e outside the bent portion Bf corresponds to the overhang portion 12e.
- a plurality of first conductive layers 40 extending in the X direction are provided side by side in the Y direction.
- the first conductive layer 40 is also disposed in the regions 21b and 21c outside the bent portion B, and the first conductive layer 40 is disposed on the side surface portions 12b and 12c.
- a first wiring 42 is electrically connected to each first conductive layer 40 via a terminal portion (not shown) in a region 21c corresponding to the side surface portion 12c.
- the first wirings 42 are respectively routed to the region 21c and the region 21e, are routed to the tip 23 of the region 21e, and are connected to a terminal 44 provided at the tip 23 of the region 21e.
- the FPC 15 is connected to the terminal 44.
- the tip 23 of the region 21e corresponds to the tip 13 of the overhang portion 12e.
- the first conductive layer 40 is disposed in the region 21c corresponding to the side surface portion 12c, and the first wiring 42 of the first conductive layer 40 is routed from the region 21c to the region 21e. Since the length in the X direction can be the length of the side surface portion 12c, that is, the thickness of the multilayer structure 12, the multilayer structure 12 and the display device with a touch panel 10 can be thinned. In addition, since the first conductive layer 40 is disposed across the bent portion B, and the first conductive layer 40 is bent, the first conductive layer 40 straddling the bent portion B is difficult to sense, and sensing It is necessary to reduce other noises as much as possible.
- the length of the first wiring 42 can be shortened by concentrating the first wiring 42 on the tip 23 of the region 21e corresponding to the tip 13 of the overhanging portion 12e. Thereby, noise can be reduced and sensing of the first conductive layer 40 across the bent portion B can be facilitated.
- the first wiring 42 is concentrated on the tip 23 of the region 21e corresponding to the tip 13 of the overhanging portion 12e, it is preferable to concentrate 90% or more of the plurality of first wirings 42.
- the wiring distance to the controller 14 can be shortened. Thereby, the influence of noise can be suppressed.
- FIG. 6 is a schematic diagram showing another example of the arrangement of the first conductive layer and the first wiring in the multilayer body of the multilayer structure according to the embodiment of the present invention.
- FIG. 6 is a plan view of the laminate 20 as in FIG.
- symbol is attached
- the terminal 44 may be arranged at the tip 23 of the region 21e corresponding to the tip 13 of the protruding portion 12e and in the center in the Y direction.
- the length in the X direction of the region 21c corresponding to the side surface portion 12c can be made shorter than that of the stacked body 20 shown in FIG.
- the laminated structure 12 and the display device 10 with a touch panel can be made thinner.
- the total length of the first wirings 42 can be made shorter than that of the stacked body 20 shown in FIG.
- noise can be reduced, and sensing of the first conductive layer 40 across the bent portion B can be further facilitated.
- 6 can shorten the FPC 15 similarly to the stacked body 20 shown in FIG. 5, and this can also reduce the influence of noise.
- FIG. 7 is a schematic diagram illustrating another example of the arrangement of the first conductive layer and the first wiring in the multilayer body of the multilayer structure according to the embodiment of the present invention.
- FIG. 7 is a plan view of the laminate 20 as in FIG.
- symbol is attached
- three first terminals 44a, second terminals 44b, and third terminals 44c are connected to the tip 23 of the region 21e corresponding to the tip 13 of the overhanging portion 12e, and Y You may arrange
- the first wirings 42 of the three first conductive layers 40 are connected to the first terminals 44a, and the first wirings 42 of the two first conductive layers 40 are connected to the second terminals 44b.
- the first wirings 42 of the three first conductive layers 40 of the third terminal 44c are connected.
- the number of terminals and the number of connections of the first wiring 42 of the first conductive layer 40 to each terminal are not particularly limited, but the number of connections to each terminal is the same, and It is preferable that the length of one wiring 42 be the same. As a result, the wiring resistance can be made uniform, and for example, variations in sensing characteristics can be reduced.
- one wiring member having, for example, a branch portion corresponding to the number of the plurality of terminals.
- an FPC 17 having three branch portions 17a, 17b, and 17c is used.
- the branch portion 17a of the FPC 17 is connected to the first terminal 44a
- the branch portion 17b is connected to the second terminal 44b
- the branch portion 17c is connected to the third terminal 44c. Also in the routing form of the first wiring 42 shown in FIG.
- the length in the X direction of the region 21c corresponding to the side surface portion 12c can be made shorter than that of the stacked body 20 shown in FIG. Thereby, the laminated structure 12 and the display device 10 with a touch panel can be made thinner.
- the total length of the first wirings 42 can be made shorter than that of the stacked body 20 shown in FIG. 5, thereby reducing noise and sensing the first conductive layer 40 straddling the bent portion B. Can be made even easier. 7 can shorten the FPC 15 similarly to the stacked body 20 shown in FIG. 5, and this can also reduce the influence of noise.
- the FPC 15 may be connected to each of the first terminal 44a, the second terminal 44b, and the third terminal 44c.
- FIG. 8 is a schematic diagram showing an example of the arrangement of the second conductive layer and the second wiring in the multilayer body of the multilayer structure according to the embodiment of the present invention.
- FIG. 8 is a plan view of the laminate 20 as in FIG.
- symbol is attached
- a plurality of second conductive layers 50 extending in the Y direction are provided side by side in the X direction.
- the second conductive layer 50 is also disposed in the regions 21b and 21c outside the bent portion B, and the second conductive layer 50 is disposed in the side surface portions 12b and 12c. Thereby, sensing at the side surface portions 12b and 12c becomes possible.
- a second wiring 52 is electrically connected to each second conductive layer 50 via a terminal portion (not shown).
- Each second wiring 52 is routed and connected to a terminal 54 provided at the distal end 23 of the region 21e corresponding to the distal end 13 of the overhanging portion 12e via the region 21c corresponding to the side surface portion 12c.
- the FPC 15 is connected to the terminal 54.
- the second wiring 52 is drawn from one end in the Y direction, routed through the region 21c to the region 21e, the second wiring 52 is concentrated in the region 21e, and the FPC 15 is provided at the tip 23 of the region 21e.
- the structure can be simplified as compared with the case where a terminal is provided at one end in the Y direction of the region 21a to connect the FPC. Since no terminal is provided in the area 21a, the decorative printing area for hiding the terminal can also be reduced. Furthermore, by concentrating the second wiring 52 in the region 21e and providing the FPC 15 at the tip 23 of the region 21e, the wiring distance to the controller 14 of the FPC 15 can be shortened. Thereby, the influence of noise can be suppressed.
- the second wiring 52 can be routed to both the region 21b and the region 21c.
- the number of FPCs is increased, and the total length of the FPC wiring distance becomes longer than when one FPC is used. Since FPC is easily affected by noise, it is preferable that the wiring distance is short. Further, as the number of connections between the controller 14 and the FPC increases, the configuration of the controller 14 becomes complicated. Furthermore, since it is necessary to consider the influence of noise at the location where the controller 14 is connected to the FPC 15, the number of FPCs provided in the first conductive layer 40 and the second conductive layer 50 is one, respectively. It is necessary to shorten the wiring distance.
- FIG. 9 is a schematic diagram illustrating another example of the arrangement of the second conductive layer and the second wiring in the multilayer body of the multilayer structure according to the embodiment of the present invention.
- FIG. 9 is a plan view of the laminate 20 as in FIG.
- symbol is attached
- the second wiring 52 is drawn from both ends in the Y direction, and drawn from the region 21c to the tip 23 of the region 21e corresponding to the tip 13 of the overhanging portion 12e.
- the second wiring 52 is connected to the first terminal 54a and the second terminal 54b arranged at both ends of the tip 23 in the Y direction.
- the second wirings 52 of the six second conductive layers 50 are connected to the first terminals 54a, and the second wirings 52 of the six second conductive layers 50 are connected to the second terminals 54b. ing.
- the number of terminals and the number of connections of the second wiring 52 of the second conductive layer 50 to each terminal are not particularly limited, but the number of connections to each terminal is the same, and It is preferable that the lengths of the two wirings 52 be the same. As a result, the wiring resistance can be made uniform, and for example, variations in sensing characteristics can be reduced.
- the second wiring 52 is drawn from both ends in the Y direction, routed to the region 21e through the region 21c, and the second wiring 52 is concentrated on the region 21e to be attached to the tip 23 of the region 21e.
- the configuration can be simplified as compared with the case where the terminals are provided at both ends in the Y direction of the region 21a and the two FPCs are connected. Since no terminal is provided in the area 21a, the decorative printing area for hiding the terminal can also be reduced.
- the FPC 15 is connected to the first terminal 54a and the second terminal 54b, respectively.
- one wiring member for example, one having a branch portion corresponding to the number of terminals is used. It is preferable to connect the first terminal 54a and the second terminal 54b. For example, it is preferable to connect using an FPC having two branch portions.
- the second wiring 52 is concentrated on the overhanging portion 12e, and the first terminal 54a and the second terminal 54b provided at the end in the Y direction of the tip 23 of the region 21e.
- the wiring distance of the FPC 15 to the controller 14 can be shortened. Thereby, the influence of noise can be suppressed.
- the FPC 15 is formed in the same layer.
- the combination of the first conductive layer 40 and the second conductive layer 50 without being connected. Any combination of FIGS. 5 and 8, FIGS. 5 and 9, FIGS. 6 and 8, FIGS. 6 and 9, FIGS. 7 and 8, and FIGS.
- the FPC 15 can be connected to the same position of the tip 13 of the overhang portion 12e.
- FIG. 6 and FIG. 8 the FPC 15 can be connected to the same position of the tip 13 of the overhang portion 12e.
- three terminals are arranged at the tip 13 of the overhanging portion 12e and can be connected by, for example, the FPC 17 shown in FIG.
- FPC 17 shown in FIG.
- the first conductive layer 40 is connected to the first conductive layer 40 in order to make the total length of the first wiring 42 shorter than the total length of the second wiring 52 of the second conductive layer 50. It is preferable to concentrate the terminal 44 on the overhanging portion 12e through which the first wiring 42 is routed. By making the total length of the first wiring 42 shorter than the total length of the second wiring 52, noise to the first wiring 42 can be reduced, and the first conductive layer 40 of the first conductive layer 40 straddling the bent portion B can be reduced. Sensing can be made even easier. 5 to 9 described above using the laminated body 20, the structure of the laminated body is not limited to this, and any of the above-described laminated bodies 20a, 20b, and 20c is used. There may be. Further, the transparent conductive members 30 and 30 a may protrude from the protective member 32 or may protrude from the protective member 32 and the adhesive layer 34 when the adhesive layer 34 is present.
- the display apparatus with a touch panel it is not limited to the display apparatus 10 with a touch panel shown in FIG. 1, The structure which has any one among the 1st conductive layer 40 and the 2nd conductive layer 50 But you can. In this case, the position in either the X direction or the Y direction is detected.
- FIG. 10 is a schematic diagram illustrating an example of the first conductive pattern of the first conductive layer of the multilayer body of the multilayer structure according to the embodiment of the present invention.
- the first conductive layer 40 has a first conductive pattern 60 constituted by a plurality of lattices 62 extending in the X direction by fine metal wires 38.
- the plurality of gratings 62 have a substantially uniform shape.
- substantially uniform means that the shape and size of the lattice 62 are the same at first glance, in addition to the case where they completely match.
- the first conductive pattern 60 has two patterns, a first first conductive pattern 60a and a second first conductive pattern 60b.
- Each first conductive layer 40 is electrically connected to the first electrode terminal 41 at one end.
- Each first electrode terminal 41 is electrically connected to one end of each first wiring 42.
- Each first wiring 42 is electrically connected to a terminal 44 (see FIG. 1) at the other end.
- the first first conductive pattern 60 a and the second first conductive pattern 60 b are electrically separated by the first non-conductive pattern 64.
- a dummy pattern composed of a thin metal wire 38 having a disconnection portion described later is formed as the first non-conductive pattern 64. Is done.
- a dummy pattern composed of a fine metal wire is formed as the first non-conductive pattern 64 Instead, it exists as a space.
- the first first conductive pattern 60 a and the second first conductive pattern 60 b include slit-shaped non-conductive patterns 65 that are electrically separated, and a plurality of first conductive pattern rows divided by the non-conductive patterns 65. 68.
- a dummy pattern composed of a thin metal wire 38 having a disconnection portion to be described later is formed as the non-conductive pattern 65.
- a dummy pattern composed of thin metal wires 38 is formed as the non-conductive pattern 65. It exists as a space.
- the first first conductive pattern 60a includes a slit-like non-conductive pattern 65 with the other end opened. Since the other end is open, the first first conductive pattern 60a has a comb structure. In the first first conductive pattern 60 a, three first conductive pattern rows 68 are formed by the two non-conductive patterns 65. Since each first conductive pattern row 68 is connected to the first electrode terminal 41, it has the same potential.
- the second first conductive pattern 60b includes an additional first electrode terminal 66 at the other end, as shown on the lower side of FIG.
- the slit-shaped non-conductive pattern 65 is closed in the first conductive pattern 60.
- each first conductive pattern 60 can be easily inspected.
- three first conductive pattern rows 68 are formed by two closed non-conductive patterns 65. Since each first conductive pattern row 68 is connected to the first electrode terminal 41 and the additional first electrode terminal 66, they have the same potential. This first conductive pattern row is one of the modifications of the comb structure.
- the number of the first conductive pattern rows 68 may be two or more, and is determined in consideration of the relationship with the pattern design of the fine metal wires 38 within the range of 10 or less, preferably 7 or less.
- each first conductive pattern row 68 has a different shape.
- the uppermost first conductive pattern column 68 among the three first conductive pattern columns 68 extends along the X direction while intersecting adjacent mountain-shaped metal thin wires 38. It is comprised by extending.
- the first conductive pattern row 68 on the upper side is not a complete lattice 62 but has a structure without a lower apex angle.
- the first conductive pattern row 68 in the center is constituted by two rows by bringing one side of the adjacent lattice 62 into contact with each other and extending along the X direction.
- the lowermost first conductive pattern row 68 is configured by bringing apex angles of adjacent lattices 62 into contact with each other, extending along the X direction, and further extending one side of each lattice 62.
- the uppermost first conductive pattern row 68 and the lowermost first conductive pattern row 68 have substantially the same lattice shape, and one side of the adjacent lattice 62 is adjacent to each other. Are made to contact each other and extend along the X direction to form two rows.
- the first conductive pattern row 68 in the center of the second first conductive pattern 60b is such that the apex angles of the adjacent lattices 62 are in contact with each other, extend along the X direction, and further, one side of each lattice 62 is extended. Consists of.
- FIG. 11 is a schematic diagram illustrating an example of the second conductive pattern of the second conductive layer of the multilayer body of the multilayer structure according to the embodiment of the present invention.
- the second conductive pattern 70 is composed of a large number of lattices made of fine metal wires 38.
- the second conductive pattern 70 extends in the Y direction, and a plurality of second conductive layers 50 are arranged in parallel in the X direction. Each second conductive layer 50 is electrically separated by the second non-conductive pattern 72.
- a dummy pattern composed of a thin metal wire 38 having a broken portion is formed as the second non-conductive pattern 72.
- a dummy pattern composed of a thin metal wire 38 is used as the second non-conductive pattern 72. It is not formed and exists as a space.
- Each second conductive layer 50 is electrically connected to the terminal 51.
- Each terminal 51 is electrically connected to the conductive second wiring 52.
- Each second conductive layer 50 is electrically connected to the terminal 51 at one end.
- Each terminal 51 is electrically connected to one end of each second wiring 52.
- Each second wiring 52 is electrically connected to a terminal 54 (see FIG. 1) at the other end.
- the second conductive layer 50 has a strip structure having a substantially constant width along the Y direction, but is not limited to a strip shape.
- the second conductive pattern 70 may be provided with an additional second electrode terminal 74 at the other end. By providing the additional second electrode terminal 74, each second conductive pattern 70 can be easily inspected.
- the second conductive layer 50 not including the additional second electrode terminal 74 and the second conductive layer 50 including the additional second electrode terminal 74 are formed on the same surface. ing. However, it is not necessary to mix the second conductive layer 50 having the additional second electrode terminal 74 and the second conductive layer 50 not having the second electrode terminal 74, and either one of the second conductive layers 50 is not necessary. It is sufficient that only the conductive layer 50 is formed.
- the second conductive pattern 70 includes a plurality of grids 76 formed by intersecting metal thin wires 38, and the grid 76 has substantially the same shape as the grid 62 of the first conductive pattern 60. The length of one side of the grating 76 and the aperture ratio of the grating 76 are the same as those of the grating 62 of the first conductive pattern 60.
- FIG. 12 shows a combination pattern obtained by disposing the first conductive pattern 60 having a comb structure and the second conductive pattern 70 having a strip structure facing each other.
- the first conductive pattern 60 and the second conductive pattern 70 are orthogonal to each other, and a combination pattern 80 is formed by the first conductive pattern 60 and the second conductive pattern 70.
- a combination pattern 80 shown in FIG. 12 is a combination of a first conductive pattern 60 having no dummy pattern and a second conductive pattern 70 having no dummy pattern.
- a small lattice 82 is formed by the lattice 62 and the lattice 76 in a top view.
- the small lattice 82 has one side having a length corresponding to half the length of one side of the lattice 62 and the lattice 76.
- One side of the length has, for example, one side with a length of 125 ⁇ m or more and 450 ⁇ m or less, and preferably has a length of 150 ⁇ m or more and 350 ⁇ m or less.
- FIGS. 13A to 13C are schematic views showing a first example of a method for manufacturing a display device with a touch panel according to an embodiment of the present invention in the order of steps.
- a laminate in which a cover member 24 is laminated on the entire surface of a flat laminate 20 via an adhesive layer 22 is prepared.
- the illustration of the adhesive layer 22 is omitted. Note that the adhesive layer may not be provided.
- the laminated body 20 is divided into a region 21a corresponding to the flat surface portion 12a with the bent portion B as a boundary, and regions 21b and 21c corresponding to the side surface portions 12b and 12c, and further corresponds to the protruding portion 12e with the bent portion Bf as a boundary. It is partitioned into a region 21e. There is a cover member 24 up to the region 21e.
- the laminated body 20 is bent together with the cover member 24 at a bent portion B, and both ends are bent at substantially right angles so that the laminated body 20 is on the inner side, thereby forming side portions 12b and 12c as shown in FIG.
- the bent portion Bf is bent at a substantially right angle with respect to the side surface portion 12c to form an overhang portion 12e to obtain a three-dimensional shape.
- the side surface portions 12b and 12c are substantially perpendicular to the flat surface portion 12a, and the overhanging portion 12e is substantially parallel to the flat surface portion 12a and faces the flat surface portion 12a.
- the FPC 15 is attached to the tip 13 of the overhang portion 12e.
- the display surface 18a of the display module 18 is directed to the concave portion 12d side, and the end of the display module 18 is inserted and hooked into a region 12f surrounded by the flat surface portion 12a, the side surface portion 12c, and the overhanging portion 12e. Then, as shown in FIG. 13C, the display module 18 is fitted into the recess 12d, and the display module 18 is attached.
- the above-described optically transparent adhesive (OCA) or optically transparent resin (OCR) can be attached to the display surface 18a.
- the FPC 15 is connected to the controller 14. Thereby, the display apparatus 10 with a touch panel can be formed.
- the region 12f is surrounded by the cover member 24.
- the cover member 24 is made of polycarbonate, for example, sufficient rigidity can be obtained. Accordingly, the display module 18 can be easily attached because the display module 18 is stable even when the display module 18 is hooked on the region 12f.
- the folding of the laminate 20 in which the cover member 24 is laminated on the entire surface is performed by, for example, heating and folding to a predetermined temperature, and then cooling to room temperature.
- a known method for bending a resin material can be appropriately used for bending the laminate 20 described above.
- the side surface portions 12b and 12c and the overhang portion 12e may be formed by one-step bending, and after the side surface portions 12b and 12c are formed, they are formed by two-stage bending to form the overhang portion 12e. Also good.
- FIGS. 14A to 14C are schematic views showing a second example of the manufacturing method of the display device with a touch panel according to the embodiment of the present invention in the order of steps.
- FIGS. 14A to 14C are diagrams for explaining a second example of the method for manufacturing the display device with a touch panel.
- FIGS. 13A to 13C illustrate the method for manufacturing the display device with a touch panel.
- the same components as those in the diagram for explaining the first example are denoted by the same reference numerals, and detailed description thereof is omitted.
- the same steps as those in the first example of the method for manufacturing the display device with a touch panel 10 shown in FIGS. 13A to 13C are described in detail. Description is omitted.
- the second example of the method for manufacturing the display device 10 with a touch panel has a region 21a and a region of the stacked body 20 as shown in FIG.
- the cover member 24 is laminated
- the region 21e is composed of the stacked body 20 only.
- the laminated body 20 is bent together with the cover member 24 at the bent portion B, and the both ends of the laminated body 20 are bent at substantially right angles so that the side faces 12b and 12c are formed as shown in FIG. Make a shape. Since the cover member 24 is not provided on the entire surface of the stacked body 20, the overhanging portion 12e is not formed at this stage. Then, the FPC 15 is attached to the tip 23 of the stacked body 20.
- the display module 18 is accommodated in the recess 12d with the display surface 18a of the display module 18 facing the recess 12d, and the display module 18 is attached to the recess 12d as shown in FIG.
- this attachment can be performed by attaching the optically transparent adhesive (OCA) or the optically transparent resin (OCR) to the display surface 18a, for example.
- OCA optically transparent adhesive
- OCR optically transparent resin
- the laminated body 20 is bent toward the back surface 18 b side of the display module 18 to form the overhanging portion 12 e, and the FPC 15 is connected to the controller 14. Thereby, the display apparatus 10 with a touch panel can be formed.
- FIGS. 15A and 15B are schematic views illustrating a third example of the manufacturing method of the display device with a touch panel according to the embodiment of the present invention in the order of steps.
- FIGS. 15A to 15C are diagrams for explaining a third example of the method for manufacturing a display device with a touch panel shown in FIGS. 15A to 15C.
- the same components as those in the diagram for explaining the first example are denoted by the same reference numerals, and detailed description thereof is omitted.
- the same steps as those in the first example of the manufacturing method of the display device with a touch panel 10 shown in FIGS. Description is omitted.
- the third example of the method for manufacturing a display device with a touch panel is the first of the above-described manufacturing methods, except that the method for attaching the display module 18 is different from the first example of the method for manufacturing a display device with a touch panel. Since this is the same as the above example, detailed description thereof is omitted.
- the laminated body 20 provided with the cover member 24 on the entire surface is formed into a three-dimensional structure having a flat surface portion 12a, side surface portions 12b and 12c, and an overhanging portion 12e. To a typical shape. Note that the three-dimensional shape shown in FIG. 15A is a three-dimensional view of the planar shape shown in FIG.
- the display module 18 is slid and inserted into the recess 12d from a direction perpendicular to the connecting direction between the flat surface portion 12a and the side surface portions 12b and 12c. Then, as shown in FIG. 13C, the controller 14 and the FPC 15 on the back surface 18b of the display module 18 are connected. Thereby, the display apparatus 10 with a touch panel can be obtained.
- the display module 18 is attached after the FPC 15 is provided, but the present invention is not limited to this.
- the FPC 15 may be attached after the display module 18 is attached.
- the present invention is basically configured as described above. As described above, the laminated structure, the touch panel, the display device with a touch panel, and the manufacturing method thereof have been described in detail. However, the present invention is not limited to the above-described embodiment, and various improvements can be made without departing from the gist of the present invention. Of course, changes may be made.
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Abstract
Description
また、携帯機器の外装カバーにタッチセンサー機能を付与することができれば、部品点数の削減を図ることができ、装置の小型化とそれによる携帯性の向上が実現可能となる。さらに、タッチパネルの形状を立体的に自由に設計できれば、装置を自由にデザインすることができ、意匠性の高い装置を作製することが可能となる。
ここで、タッチセンサーフィルムとしては、従来のITO(Indium Tin Oxide)透明導電フィルムのような、導電層が金属酸化物の薄膜からなるものでは、加工によりクラックが発生し、断線するため、3次元的な加工には適していなかった。金属細線のメッシュ構造を有するタイプの導電フィルムであれば、折り曲げまたは延伸等の変形を行っても、断線が生じにくいため、3次元的な加工を実現することができる。
特許文献1に開示されている3次元形状のポータブルターミナルのように、側面部にタッチセンサー機能を設けた場合、周辺配線部は、同様に側面部に配置されるため、全体として製品の厚みが増す形となり、タッチパネル搭載製品の薄型化の観点からは好ましくない。なお、特許文献1では、上述の周辺配線部配線について何ら考慮されていない。このようなことから、平面部と側面部にタッチ入力機能を有するタッチパネルにおいて、最終製品形態において薄型化を実現できるタッチパネルの開発が求められている。
張出部は、カバー部材と透明導電部材で構成されていることが好ましい。
側面部は平面部の両側に設けられており、張出部は、一方の側面部に設けられていることが好ましい。
張出部は、平面部に対向し、かつ平面部と略平行に設けられていることが好ましい。
透明導電部材とカバー部材との間に、光学的に透明な粘着剤層を有することが好ましい。
例えば、導電層は、透明基板の両面に形成されている。また、例えば、導電層は、透明基板の片面に形成されており、導電層が片面に形成された透明基板が2つ積層されている。
本発明の積層構造体と、積層構造体の平面部、側面部および張出部で構成される凹部に収納されるディスプレイモジュールを有することを特徴とするタッチパネル付き表示装置を提供するものである。
ディスプレイモジュールの位置決めをするための突起が張出部に設けられていることが好ましい。
例えば、張出部は、透明導電部材、またはカバー部材と透明導電部材で構成されている。
例えば、ディスプレイモジュールは、凹部に対してスライドさせて取り付けられる。
なお、以下において数値範囲を示す「~」とは両側に記載された数値を含む。例えば、εが数値α~数値βとは、εの範囲は数値αと数値βを含む範囲であり、数学記号で示せばα≦ε≦βである。
また、透明とは、光透過率が可視光波長(波長400nm~800nm)において、少なくとも60%以上のことであり、好ましくは80%以上であり、より好ましくは90%以上、さらにより好ましくは95%以上のことである。
本発明の積層構造体は、例えば、タッチパネルに用いることができる。具体例として、例えば、図1に示す積層構造体12を有するタッチパネル付き表示装置10について説明する。
図1に示すタッチパネル付き表示装置10は、積層構造体12とコントローラ14とディスプレイモジュール18とを有し、積層構造体12とコントローラ14とは、可撓性を有する配線部材、例えば、フレキシブル回路基板15(以下、FPC15ともいう)で接続されている。
ディスプレイモジュール18は、動画等を含む画像を画面に表示する機能を有するものであり、その構成は、特に限定されるものではなく、例えば、液晶表示装置、有機EL装置および電子ペーパ等を有する。ディスプレイモジュール18では、例えば、表示面18aに画像が表示される。
積層構造体12は、少なくとも平面部12aと、平面部12aに連続して形成された2つの側面部12b、12cと、一方の側面部12cに連続して形成された張出部12eを備える。2つの側面部12b、12cは、平面部12aの両端部が折り曲げられている。平面部12aの折り曲げられたところを曲げ部Bという。張出部12eは、側面部12cの端が折り曲げられて形成されている。側面部12cが折り曲げられたところを曲げ部Bfという。
なお、側面部12b、12cは平面部12aに対して略直角な平面であるものに限定されるものではなく、側面部12b、12cは曲面で構成してもよい。
また、側面部12bに張出部12eを設けていないが、これに限定されるものではなく、側面部12bに張出部12eを設けてもよい。
なお、積層構造体12は、ディスプレイモジュール18で表示される画像を認識させるために、光学的に透明な領域を備える。この場合、積層構造体12の積層体20およびカバー部材24は、表示面18aに表示される動画等を含む画像を認識できるように、表示面18aの範囲に合わせて、平面部12aおよび側面部12b、12cを適宜透明にする。
領域12fにディスプレイモジュール18の端が挿入されるため、張出部12eにはディスプレイモジュール18の位置決めための突起(図示せず)等を設けることが好ましい。また、ディスプレイモジュール18の位置決めのために、裏面18bと張出部12eとが係合する係合突起(図示せず)、例えば、凹部(図示せず)と凸部(図示せず)を設ける構成としてもよい。
接着剤層22は、光学的に透明であり、かつ積層体20をカバー部材24に接着することができれば、特に限定されるものではない。例えば、光学的透明な粘着剤(OCA)、UV硬化樹脂等の光学的透明な樹脂(OCR)を用いることができる。なお、積層体20とカバー部材24とを直接接着することができれば接着剤層22は必ずしも設ける必要はない。
カバー部材24は、積層体20を保護するためのものであり、例えば、ポリカーボネート等の樹脂材料で構成される。
各第1の導電層40は、その一端において端子部(図示せず)と電気的に接続されている。さらに、各端子部は第1の配線42と電気的に接続されている。各第1の配線42は、2つの側面部12b、12cのうち、一方の側面部12cに引き回され、さらに張出部12eの先端13に引き回されて、先端13に設けられた端子44(図5参照)にまとめられて接続されている。端子44(図5参照)には、先端13に設けられたFPC15(図5参照)が接続されており、FPC15はコントローラ14に接続されている。
なお、積層構造体12とコントローラ14とでタッチパネル16が構成される。
例えば、第2の導電層50の第2の配線52を、第2の導電層50の長手方向から引き出した場合、平面部12aに端子部が必要になるが、その端子部は、外見上隠す必要がある。このため、加飾印刷の領域が大きくなり、デザインの制約になるが、本発明では、一方の側面部12c側に周辺配線を集中させることで、デザインの制約になることもない。また、平面部12aに端子部を設けた場合、FPCを取り付けるためのスペースが必要になるが、周辺配線を集中させることで、そのようなスペースを不要とすることができる。
なお、第1の配線42と第2の配線52の周辺配線については、少なくとも張出部12eに引き回されて張出部12eの先端13でFPCに接続される構成であれば、周辺配線の配線経路等は特に限定されるものではない。
なお、図1、図2(a)に示す積層構造体12では、カバー部材24を張出部12eに迄設け、張出部12eを積層体20とカバー部材24とで構成したが、これに限定されるものではない。図2(b)に示すように、張出部12eにカバー部材24を設けることなく、張出部12eを積層体20のみで構成してもよい。この構成により、カバー部材24に張出部12eが不要となり、図2(a)に比して形状を簡素化でき、成形を容易にすることができる。
図3(a)は、本発明の実施形態の積層構造体の積層体を示す模式図であり、(b)は、透明導電部材の一例を示す模式的断面図である。なお、積層体20は、積層構造体12と同様に3次元形状を有するものであるが、図3(a)、(b)では積層体20の構成を示すため、平面状に示している。
積層体20は、例えば、下から保護部材32および透明導電部材30の順で積層されて構成されている。
なお、1つの透明基板36の表面36aに第1の導電層40を、裏面36bに第2の導電層50を形成することにより、透明基板36が収縮しても第1の導電層40と第2の導電層50との位置関係のズレを小さくすることができる。
また、透明基板36の裏面36bには、図示はしないが、第2の導電層50と接続される第2の配線52と、第2の配線52が接続される端子54が形成されている。
保護部材32はタッチパネルのタッチ面を兼ねることもできる。この場合、保護部材32が上述のカバー部材24の機能を果たし、カバー部材24は不要となる。保護部材32の表面にハードコート層および反射防止層の少なくとも1つを設けることもできる。
図3(a)、(b)に示す積層体20は、保護部材32/第2の導電層50/透明基板36/第1の導電層40の構成である。第2の導電層50/透明基板36/第1の導電層40で透明導電部材30が構成される。例えば、透明導電部材30と保護部材32で積層構造体12の平面部12a、側面部12b、12cおよび張出部12eを構成することもできる。また、透明導電部材30と保護部材32で積層構造体12の平面部12aおよび側面部12b、12cを構成し、透明導電部材30で張出部12eを構成することもできる。
第1の導電層40と第2の導電層50を、金属細線38が交差してメッシュ状となったメッシュ電極とすると、抵抗を低くでき、3次元形状に成形する際に断線しにくく、さらには断線が発生した場合にも抵抗値の影響を低減できる。
金属細線38がタッチパネル用導電フィルムにおける周辺配線(引出し配線)として適用される場合には、金属細線38の線幅は500μm以下が好ましく、50μm以下がより好ましく、30μm以下が特に好ましい。上述の範囲であれば、低抵抗のタッチパネル電極を比較的容易に形成できる。
端子部(図示せず)、第1の配線42、端子44、第2の配線52および端子54も、例えば、上述の金属細線38の形成方法で形成することができる。
ここで、図3(c)は、本発明の実施形態の積層構造体の積層体の一例の変形例を示す模式図であり、図4(a)は、本発明の実施形態の積層構造体の積層体の他の例を示す模式図であり、(b)は、透明導電部材の他の例を示す模式的断面図である。
なお、積層体20aも積層体20bも、積層構造体12を構成するものであり、積層構造体12と同様の3次元形状を有するものであるが、積層体20と同じく、図3(c)および図4(a)、(b)では積層体20a、20bの構成を示すため、平面状に示している。
接着剤層34の形態は、特に限定されるものではなく、接着剤を塗布することで形成してもよく、接着シートを用いてもよい。
図4(b)に示すように、透明導電部材30aでは、透明基板36の表面36aに金属細線38で構成された第1の導電層40が形成され、別の透明基板36の表面36aに金属細線38で構成された第2の導電層50が形成されている。透明導電部材30aは、第2の導電層50上に光学的に透明な接着剤層(図示せず)を配置して2つの透明基板36が積層されたものである。このように、1つの透明基板36に導電層を形成したものを積層した構成でもよい。
積層体20cは、透明導電部材30aと保護部材32との間に接着剤層34を有する点以外は、図4(a)、(b)に示す積層体20bと同様の構成であるため、その詳細な説明は省略する。また、積層体20cの接着剤層34は、図3(c)に示す積層体20aの接着剤層34と同じ構成であるため、その詳細な説明は省略する。
上述の積層体20aの透明導電部材30、および上述の積層体20b、20cの透明導電部材30aは、いずれも、例えば、透明導電部材30と保護部材32で積層構造体12の平面部12a、側面部12b、12cおよび張出部12eを構成することができ、透明導電部材30と保護部材32で積層構造体12の平面部12aおよび側面部12b、12cを構成し、透明導電部材30で張出部12eを構成することもできる。
上述の積層体20、20aの透明導電部材30、および上述の積層体20b、20cの透明導電部材30aは、いずれも保護部材32からはみ出していてもよい。接着剤層34があるものについては、保護部材32および接着剤層34からはみ出してもよい。これにより、上述の端子44、端子54へのFPC15の接続を容易にすることができる。
図5は、本発明の実施形態の積層構造体の積層体の第1の導電層および第1の配線の配置の一例を示す模式図である。積層体20は、上述のように、3次元形状を有するが、図5では積層構造体12を構成する積層体20を平面的に示している。図5に示す積層体20において、2つの曲げ部Bに挟まれる領域21aが積層構造体12の平面部12aに相当し、曲げ部Bの外側の領域21b、21cが積層構造体12の側面部12b、12cに相当し、曲げ部Bfの外側の領域21eが張出部12eに相当する。
各第1の導電層40には、側面部12cに相当する領域21cで、端子部(図示せず)を介して第1の配線42が電気的に接続されている。
第1の配線42は、それぞれ領域21cおよび領域21eに引き回され、領域21eの先端23に引き回されて、領域21eの先端23に設けられた端子44に接続されている。端子44にFPC15が接続される。なお、領域21eの先端23は、張出部12eの先端13に相当する。
また、曲げ部Bをまたいで第1の導電層40を配置しており、第1の導電層40は曲げられているため、曲げ部Bをまたぐ第1の導電層40はセンシングが難しく、センシングするためには他のノイズをできるだけ減らす必要がある。しかしながら、第1の配線42を、張出部12eの先端13に相当する領域21eの先端23に集中させることで、第1の配線42の長さを短くできる。これにより、ノイズを減らすことができ、曲げ部Bをまたぐ第1の導電層40のセンシングを容易にすることができる。ここで、第1の配線42を張出部12eの先端13に相当する領域21eの先端23に集中させる場合、複数個ある第1の配線42の90%以上を集中させることが好ましい。
張出部12eに第1の配線42を集中させて、張出部12eの先端13にFPC15を設けることで、コントローラ14迄の配線距離を短くすることができる。これにより、ノイズの影響を抑制することができる。
ここで、図6は本発明の実施形態の積層構造体の積層体の第1の導電層および第1の配線の配置の他の例を示す模式図である。図6は図5と同様に積層体20を平面的に示したものである。なお、図6に示す積層体20において、図5に示す積層体20と同一構成物には同一符号を付して、その詳細な説明は省略する。
図6に示す積層体20のように、端子44を、張出部12eの先端13に相当する領域21eの先端23で、かつY方向における中央に配置してもよい。この場合、図5に示す積層体20よりも、側面部12cに相当する領域21cをX方向の長さを短くすることができる。これにより、積層構造体12およびタッチパネル付き表示装置10をより薄型化することができる。
また、図5に示す積層体20よりも、第1の配線42の総長さを短くすることができる。これにより、ノイズを減らすことができ、曲げ部Bをまたぐ第1の導電層40のセンシングをより一層容易にできる。なお、図6の積層体20でも、図5に示す積層体20と同じくFPC15を短くでき、これによってもノイズの影響を小さくできる。
ここで、図7は、本発明の実施形態の積層構造体の積層体の第1の導電層および第1の配線の配置の他の例を示す模式図である。図7は図5と同様に積層体20を平面的に示したものである。なお、図7に示す積層体20において、図5に示す積層体20と同一構成物には同一符号を付して、その詳細な説明は省略する。
図7に示す第1の配線42の引き回し形態でも、図5に示す積層体20よりも、側面部12cに相当する領域21cをX方向の長さを短くすることができる。これにより、積層構造体12およびタッチパネル付き表示装置10をより薄型化することができる。
また、図5に示す積層体20よりも、第1の配線42の総長さを短くすることができ、これにより、ノイズを減らすことができ、曲げ部Bをまたぐ第1の導電層40のセンシングをより一層容易にできる。また、図7の積層体20でも、図5に示す積層体20と同じくFPC15を短くでき、これによってもノイズの影響を小さくできる。
なお、第1の端子44a、第2の端子44b、第3の端子44cに、それぞれFPC15を接続する構成でもよい。
図8は、本発明の実施形態の積層構造体の積層体の第2の導電層および第2の配線の配置の一例を示す模式図である。図8は図5と同様に積層体20を平面的に示したものである。なお、図8に示す積層体20において、図5に示す積層体20と同一構成物には同一符号を付して、その詳細な説明は省略する。
各第2の導電層50には端子部(図示せず)を介して第2の配線52が電気的に接続されている。各第2の配線52は引き回されて、側面部12cに相当する領域21cを経て張出部12eの先端13に相当する領域21eの先端23に設けた端子54に接続されている。端子54にFPC15が接続される。
さらには、第2の配線52を領域21eに集中させて領域21eの先端23にFPC15を設けることで、FPC15のコントローラ14迄の配線距離を短くすることができる。これにより、ノイズの影響を抑制することができる。なお、第2の配線52を、領域21bと領域21cの両方に引き回すこともできるが、この場合、FPCの数が増え、FPCの配線距離の総長が、FPCが1つの時よりも長くなる。FPCはノイズの影響を受けやすくため、配線距離は短い方が好ましい。また、コントローラ14とFPCとの接続数が増えると、コントローラ14構成が複雑化する。さらに、コントローラ14のFPC15との接続箇所でのノイズの影響も考慮する必要があるため、第1の導電層40と第2の導電層50とに設けるFPCは、それぞれ1つであり、かつその配線距離を短くする必要がある。
ここで、図9は、本発明の実施形態の積層構造体の積層体の第2の導電層および第2の配線の配置の他の例を示す模式図である。図9は図5と同様に積層体20を平面的に示したものである。なお、図9に示す積層体20において、図8に示す積層体20と同一構成物には同一符号を付して、その詳細な説明は省略する。
この場合、第1の端子54aに6つの第2の導電層50の第2の配線52が接続され、第2の端子54bに6つの第2の導電層50の第2の配線52が接続されている。なお、端子の数と、各端子への第2の導電層50の第2の配線52の接続数は、特に限定されるものではないが、各端子への接続数は同じであり、かつ第2の配線52の長さも同じになるようにすることが好ましい。これにより、配線抵抗の均一化を図ることができ、例えば、センシング特性のバラつきを小さくすることができる。
上述のように、第1の端子54a、第2の端子54bに、それぞれFPC15が接続される。FPCの配線距離の総長さを短くすること、およびコントローラ14との接続箇所の増加を抑制するために、1つの配線部材で、例えば、端子の数に応じた分岐部を有するものを用いて第1の端子54a、第2の端子54bと接続することが好ましい。例えば、2つの分岐部を有するFPCを用いて接続することが好ましい。
なお、図9に示す積層体20でも、張出部12eに第2の配線52を集中させて、領域21eの先端23のY方向の端に設けた第1の端子54aと第2の端子54bに、それぞれFPC15を設けることで、コントローラ14迄のFPC15の配線距離を短くすることができる。これにより、ノイズの影響を抑制することができる。
第1の配線42の総長さを、第2の配線52の総長さよりも短くすることで、第1の配線42へのノイズを減らすことができ、曲げ部Bをまたぐ第1の導電層40のセンシングをさらに一層容易にできる。
なお、上述の図5~9に示す形態において、積層体20を用いて説明したが、積層体の構成は、これに限定されるものではなく、上述の積層体20a、20b、20cのいずれであってもよい。また、透明導電部材30、30aは、保護部材32からはみ出しても、接着剤層34がある場合には保護部材32および接着剤層34からはみ出してもよい。
図10は、本発明の実施形態の積層構造体の積層体の第1の導電層の第1導電パターンの一例を示す模式図である。
図10に示すように、第1の導電層40は金属細線38による、X方向に延在する複数の格子62にて構成された第1導電パターン60を有する。複数の格子62は略均一な形状である。ここで略均一とは完全一致する場合に加えて、一見して格子62の形、大きさが同じであることを意味する。第1導電パターン60は、第1の第1導電パターン60aと第2の第1導電パターン60bの2つのパターンを有する。
図11は、本発明の実施形態の積層構造体の積層体の第2の導電層の第2導電パターンの一例を示す模式図である。
図11に示すように、第2導電パターン70は金属細線38による多数の格子にて構成される。第2導電パターン70は、Y方向に延び、X方向に複数並列に第2の導電層50が配列されている。各第2の導電層50は第2非導電パターン72により電気的に分離される。
第2導電パターン70は、他方端に、追加の第2電極端子74を設けてもよい。追加の第2電極端子74を設けることで各第2導電パターン70の検査を容易に行うことができる。
第2導電パターン70では、交差する金属細線38で構成される複数の格子76を含んでおり、格子76は、第1導電パターン60の格子62と実質的に同じ形状を有する。格子76の一辺の長さ、格子76の開口率については第1導電パターン60の格子62と同等である。
図12に示す組合せパターン80は、ダミーパターンを有さない第1導電パターン60とダミーパターンを有さない第2導電パターン70とを組み合わせたものである。
組合せパターン80において、上面視で、格子62と格子76とにより小格子82が形成される。つまり、格子62の交差部が格子76の開口領域のほぼ中央に配置される。なお、小格子82は、格子62および格子76の一辺の半分の長さに相当する長さの一辺を有する。その長さの一辺は、例えば、125μm以上、450μm以下の長さの一辺を有し、好ましくは150μm以上、350μm以下の長さである。
図13(a)~(c)は、本発明の実施形態のタッチパネル付き表示装置の製造方法の第1の例を工程順に示す模式図である。
図13(a)に示すように、まず、平板状の積層体20の全面に接着剤層22(図2(a)参照)を介してカバー部材24が積層されたものを用意する。なお、接着剤層22(図2(a)参照)の図示は省略している。なお、接着剤層はなくてもよい。
積層体20を、カバー部材24とともに曲げ部Bで、積層体20が内側になるように両端を略直角に折り曲げて、図13(b)に示すように、側面部12b、12cを形成し、さらに、曲げ部Bfを側面部12cに対して略直角に折り曲げて張出部12eを形成して立体的な形状にする。このとき、側面部12b、12cは平面部12aに対して略直角であり、張出部12eは平面部12aに対して略平行であり、平面部12aに対向している。次に、張出部12eの先端13にFPC15を取り付ける。
そして、FPC15をコントローラ14に接続する。これにより、タッチパネル付き表示装置10を形成することができる。
領域12fはカバー部材24で囲まれており、カバー部材24を、例えば、ポリカーボネートで形成した場合、十分な剛性を得ることができる。これにより、領域12fにディスプレイモジュール18を引掛けても安定するため、ディスプレイモジュール18を容易に取り付けることができる。
図14(a)~(c)は、本発明の実施形態のタッチパネル付き表示装置の製造方法の第2の例を工程順に示す模式図である。
なお、図14(a)~(c)に示すタッチパネル付き表示装置の製造方法の第2の例を説明する図において、図13(a)~(c)に示すタッチパネル付き表示装置の製造方法の第1の例を説明する図と同一構成物には、同一符号を付して、その詳細な説明は省略する。
また、タッチパネル付き表示装置10の製造方法の第2の例では、図13(a)~(c)に示すタッチパネル付き表示装置10の製造方法の第1の例と同じ工程については、その詳細な説明を省略する。
積層体20を、カバー部材24とともに曲げ部Bで、積層体20を内側にして両端を略直角に折り曲げて、図14(b)に示すように、側面部12b、12cを形成して立体的な形状にする。カバー部材24が積層体20の全面に設けられていないため、この段階では、張出部12eは形成されない。そして、積層体20の先端23にFPC15を取り付ける。
そして、積層体20をディスプレイモジュール18の裏面18b側に曲げて張出部12eを形成し、FPC15をコントローラ14に接続する。これにより、タッチパネル付き表示装置10を形成することができる。
図15(a)および(b)は、本発明の実施形態のタッチパネル付き表示装置の製造方法の第3の例を工程順に示す模式図である。
なお、図15(a)~(c)に示すタッチパネル付き表示装置の製造方法の第3の例を説明する図において、図13(a)~(c)に示すタッチパネル付き表示装置の製造方法の第1の例を説明する図と同一構成物には、同一符号を付して、その詳細な説明は省略する。
また、タッチパネル付き表示装置10の製造方法の第3の例では、図13(a)~(c)に示すタッチパネル付き表示装置10の製造方法の第1の例と同じ工程については、その詳細な説明を省略する。
製造方法の第3の例では、図15(a)に示すように、全面にカバー部材24が設けられた積層体20を、平面部12a、側面部12b、12cおよび張出部12eをする立体的な形状に形成する。なお、図15(a)に示す立体的形状は、図13(b)に示す平面的な形状を立体視したものである。
12 積層構造体
12a 平面部
12b、12c 側面部
12e 張出部
14 コントローラ
15 フレキシブル回路基板(FPC)
16 タッチパネル
18 ディスプレイモジュール
20、20a、20b、20c 積層体
22、32 接着剤層
24 カバー部材
30、30a 透明導電部材
34 保護部材
36 透明基板
38 金属細線
40 第1の導電層
42 第1の配線
44、54 端子
50 第2の導電層
52 第2の配線
60 第1導電パターン
70 第2導電パターン
Claims (17)
- 3次元形状を有し、光学的に透明な領域を備える積層構造体であって、
可撓性を有する透明基板上に金属細線で構成された導電層を少なくとも1層備える透明導電部材と、
前記透明基板上に形成され、前記導電層と電気的に接続された配線と、
前記透明導電部材を保護するためのカバー部材とを有し、
前記3次元形状は、少なくとも平面部と、前記平面部に連続して折曲した側面部と、前記側面部に連続し、かつ前記側面部に対して折曲した張出部とで構成され、
前記平面部、前記側面部および前記張出部のうち、前記平面部および前記側面部は前記カバー部材と前記透明導電部材で構成され、前記張出部は少なくとも前記透明導電部材で構成されており、
前記配線は、少なくとも前記張出部に引き回されて、前記透明導電部材の前記張出部の先端で可撓性を有する配線部材に接続されていることを特徴とする積層構造体。 - 前記張出部は、前記透明導電部材のみで構成されている請求項1に記載の積層構造体。
- 前記張出部は、前記カバー部材と前記透明導電部材で構成されている請求項1に記載の積層構造体。
- 前記側面部は前記平面部の両側に設けられており、前記張出部は、一方の前記側面部に設けられている請求項1~3のいずれか1項に記載の積層構造体。
- 前記張出部は、前記平面部に対向し、かつ前記平面部と略平行に設けられている請求項1~4のいずれか1項に記載の積層構造体。
- 前記透明導電部材と前記カバー部材との間に、光学的に透明な粘着剤層を有する請求項1~5のいずれか1項に記載の積層構造体。
- 前記配線部材は、外部機器に接続される請求項1~6のいずれか1項に記載の積層構造体。
- 前記透明導電部材は、前記カバー部材に対して前記3次元形状の内側に配置されている請求項1~7のいずれか1項に記載の積層構造体。
- 前記導電層は、前記金属細線で構成されたメッシュ構造の導電パターンを有する請求項1~8のいずれか1項に記載の積層構造体。
- 前記導電層は、前記透明基板の両面に形成されている請求項1~9のいずれか1項に記載の積層構造体。
- 前記導電層は、前記透明基板の片面に形成されており、前記導電層が片面に形成された前記透明基板が2つ積層されている請求項1~9のいずれか1項に記載の積層構造体。
- 請求項1~11のいずれか1項に記載の積層構造体を有することを特徴とするタッチパネル。
- 請求項1~11のいずれか1項に記載の積層構造体と、前記積層構造体の前記平面部、前記側面部および前記張出部で構成される凹部に収納されるディスプレイモジュールを有することを特徴とするタッチパネル付き表示装置。
- 前記ディスプレイモジュールの位置決めをするための突起が前記張出部に設けられている請求項13に記載のタッチパネル付き表示装置。
- 請求項1~11のいずれか1項に記載の積層構造体を有するタッチパネル付き表示装置の製造方法であって、
前記平面部と、前記平面部に連続して折曲して形成された側面部と、前記側面部に連続し、かつ前記側面部に対して折曲した前記張出部で構成された3次元形状の積層構造体を得る工程と、
前記平面部、前記側面部および前記張出部で構成された凹部に、ディスプレイモジュールを取り付ける工程とを有することを特徴とするタッチパネル付き表示装置の製造方法。 - 前記張出部は、前記透明導電部材、または前記カバー部材と前記透明導電部材で構成されている請求項15に記載のタッチパネル付き表示装置の製造方法。
- 前記ディスプレイモジュールは、前記凹部に対してスライドさせて取り付けられる請求項15または16に記載のタッチパネル付き表示装置の製造方法。
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| CN106816460A (zh) * | 2017-03-01 | 2017-06-09 | 上海天马微电子有限公司 | 一种柔性触控显示面板及柔性触控显示装置 |
| DE102017117602B4 (de) | 2017-03-01 | 2024-06-27 | Shanghai Tianma Micro-electronics Co., Ltd. | Flexibles Berührungsanzeigefeld und flexible Berührungsanzeigevorrichtung |
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| KR102017767B1 (ko) | 2018-09-28 | 2019-09-04 | 삼성디스플레이 주식회사 | 표시장치 |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI664560B (zh) | 2019-07-01 |
| KR101873177B1 (ko) | 2018-06-29 |
| US20170192574A1 (en) | 2017-07-06 |
| JPWO2016039047A1 (ja) | 2017-06-08 |
| CN106575180A (zh) | 2017-04-19 |
| TW201610783A (zh) | 2016-03-16 |
| JP6220985B2 (ja) | 2017-10-25 |
| KR20170041807A (ko) | 2017-04-17 |
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