Touch sensor, window laminate including the same, and image display device

Abstract

The present invention provides a touch sensor, a window laminate including the same, and an image display device. The touch sensor includes a touch sensor panel, an FPCB, a conductive adhesive layer, and a protective layer. The touch sensor panel includes a display portion having sensing electrodes and a border portion having traces and bonding pads. The FPCB includes an FPC electrode layer, one side of which is connected to the bonding pads; an upper cover layer coupled to an upper portion of the FPC electrode layer; and a lower cover layer coupled to a lower portion of the FPC electrode layer while opening a part of the FPC electrode layer. The upper cover layer extends to at least a part of the traces including the bonding pads. The conductive adhesive layer is coupled between the bonding pads and the FPC electrode layer. The protective layer covers the touch sensor panel and the upper cover layer of the border portion.

Description

Technical Field

[0001] The present invention relates to the field of touch sensor technology. Specifically, the present invention relates to a touch sensor with a reduced bezel area. Background Art

[0002] A display device is a device that displays information externally, and examples thereof include a liquid crystal display device, a plasma display panel device, an electroluminescent display device, and an organic light emitting diode display device. A display device includes a touch sensor, which is a device for inputting a user command by touching the content displayed on the screen with a finger or a pen.

[0003] A touch sensor may include: a display portion having a plurality of sensing electrodes for sensing a touch position on a substrate; a bezel portion having traces for transmitting a touch input signal to an FPCB (flexible printed circuit board); bonding pads, etc.

[0004] The sensing electrodes are arranged in the X-axis and Y-axis directions and are connected to each other, and the outer ends of the sensing electrodes are electrically connected to the wiring of the traces. The wiring can be connected to the FPCB via the bonding pads.

[0005] Figure 1 is a cross-sectional view of a touch sensor according to the prior art.

[0006] As Figure 1 shown, a touch sensor of the prior art includes a touch sensor panel 10, an FPCB 20, a conductive adhesive layer 30, a protective layer 40, etc.

[0007] The touch sensor panel 10 includes a display portion A having sensing electrodes and a bezel portion B having traces B1 and bonding pads B2.

[0008] The FPCB 20 includes an FPC electrode layer 21, an upper cover layer 22, a lower cover layer 23, etc. One end of the FPC electrode layer 21 is connected to the bonding pad B2. The upper cover layer 22 is coupled to the upper portion of the FPC electrode layer 21, and the lower cover layer 23 is coupled to the lower portion of the FPC electrode layer 21 while opening a part of the FPC electrode layer 21. The FPCB 20 may include an IC chip 24 on the upper cover layer 22.

[0009] The conductive adhesive layer 30 is coupled between the bonding pad B2 and the FPC electrode layer 21 to electrically connect the touch sensor panel 10 and the FPCB 20.

[0010] The protective layer 40 may cover the touch sensor panel 10 and the upper cover layer 22 of the bezel portion B2.

[0011] However, in a conventional touch sensor having such a structure, due to the step difference of the FPCB 20, a space S may be generated between the protective layer 40 and the touch sensor panel 10 in the border portion B. The protective layer 40 and the touch sensor panel 10 may be separated in the border portion B, thereby deteriorating the module stability. As a result, this may cause a problem of increasing the width of the border portion B. Summary of the Invention

[0012] Technical Problem

[0013] The present invention aims to solve the above problems of the prior art and aims to provide a touch sensor having the following features:

[0014] First, in the border portion, the space between the touch sensor panel and the protective layer is minimized to increase the module stability; and

[0015] Second, the width of the border can be reduced.

[0016] Technical Solution

[0017] A touch sensor according to an aspect of the present invention for achieving the above object may be composed of a touch sensor panel, an FPCB, a conductive adhesive layer, a protective layer, etc.

[0018] The touch sensor panel may include a display portion having sensing electrodes and a border portion having traces and bonding pads.

[0019] The FPCB may include an FPC electrode layer, an upper cover layer, a lower cover layer, etc. One side of the FPC electrode layer may be connected to the bonding pad. The upper cover layer may be coupled to the upper portion of the FPC electrode layer. The upper cover layer may extend to at least a part of the trace including the bonding pad. The lower cover layer may be coupled to the lower portion of the FPC electrode layer while opening a part of the FPC electrode layer.

[0020] The conductive adhesive layer may be coupled between the bonding pad and the FPC electrode layer.

[0021] The protective layer may cover the touch sensor panel and the upper cover layer in the border portion area.

[0022] In the touch sensor according to an aspect of the present invention, the conductive adhesive layer may extend to the extension end of the upper cover layer.

[0023] In the touch sensor according to an aspect of the present invention, the conductive adhesive layer may extend beyond the extension end of the upper cover layer.

[0024] In the touch sensor according to an aspect of the present invention, the conductive adhesive layer may extend shorter than the extension end of the upper cover layer.

[0025] The touch sensor according to one aspect of the present invention may be composed of a touch sensor panel, an FPCB, a conductive adhesive layer, a protective layer, etc.

[0026] The touch sensor panel may include a display portion having sensing electrodes and a border portion having traces and bonding pads.

[0027] The FPCB may include an FPC electrode layer, an upper cover layer, a lower cover layer, etc. One side of the FPC electrode layer may be connected to the bonding pad. The FPC electrode layer may include an insulating layer, an upper FPC electrode layer coupled to the upper portion of the insulating layer, and a lower FPC electrode layer coupled to the lower portion of the insulating layer to connect to the bonding pad. The insulating layer may extend to at least a part of the trace including the bonding pad. The upper cover layer may be coupled to the upper portion of the FPC electrode layer, and the lower cover layer may be coupled to the lower portion of the FPC electrode layer while opening a part of the FPC electrode layer.

[0028] The conductive adhesive layer may be coupled between the bonding pad and the FPC electrode layer.

[0029] The protective layer may cover the touch sensor panel and the upper cover layer in the border portion area.

[0030] In the touch sensor according to one aspect of the present invention, the conductive adhesive layer may extend to the extended end of the insulating layer.

[0031] In the touch sensor according to one aspect of the present invention, the conductive adhesive layer may extend beyond the extended end of the insulating layer.

[0032] In the touch sensor according to one aspect of the present invention, the conductive adhesive layer may extend shorter than the extended end of the insulating layer.

[0033] In the touch sensor according to the present invention, the protective layer may form two or more stepped bending portions in the border portion.

[0034] In the touch sensor according to the present invention, the protective layer may be at least one of a polarizing plate, a polarizer, a retardation film, a reflective sheet, a brightness enhancement film, and a refractive index matching film.

[0035] In the touch sensor according to the present invention, the extended length of the upper cover layer, the conductive adhesive layer, or the insulating layer extends the longest among the upper cover layer, the conductive adhesive layer, and the insulating layer, and this extended length is represented by the following formula:

[0036]

[0037] Here, aE is the thickness of the longest extended layer, an is the thickness of each laminate layer, n is the number of layers other than the longest extended layer, and "e-1" is the number of layers from the lowest layer to the layer immediately preceding the longest extended layer.

[0038] The window laminate according to the present invention may include the above-described touch sensor and a window substrate coupled to the touch sensor.

[0039] The image display device according to the present invention may include the above-described touch sensor and a display panel coupled to the touch sensor.

[0040] Advantageous Effects

[0041] According to the touch sensor of the present invention having such a configuration, by extending the upper cover layer, insulating layer, etc. of the FPCB, the space generated between the touch sensor panel and the protective layer due to the step difference of the FPCB can be reduced. This improves the bonding degree between the touch sensor panel and the protective layer in the border portion, thereby improving the module stability.

[0042] In addition, according to the touch sensor of the present invention, the width of the border portion can be reduced by reducing the space between the touch sensor panel and the protective layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a cross-sectional view of a touch sensor according to the prior art.

[0044] Figure 2 is a cross-sectional view of a touch sensor according to a first embodiment of the present invention.

[0045] Figure 3 is a cross-sectional view of a touch sensor according to a second embodiment of the present invention.

[0046] Figure 4 is a cross-sectional view of a touch sensor according to a third embodiment of the present invention.

[0047] Figure 5 is a cross-sectional view of a touch sensor according to a fourth embodiment of the present invention.

[0048] Figure 6 is a cross-sectional view of a touch sensor according to a fifth embodiment of the present invention.

[0049] Figure 7 is a cross-sectional view of a touch sensor according to a sixth embodiment of the present invention.

[0050] Figure 8 is a diagram for explaining the optimal extension length of the longest extended layer in the touch sensor according to the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0051] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

[0052] Figure 2 is a cross-sectional view of a touch sensor according to a first embodiment of the present invention.

[0053] As Figure 2 shown, the touch sensor according to one aspect of the present invention may be composed of a touch sensor panel 100, an FPCB 200, a conductive adhesive layer 300, a protective layer 400, etc.

[0054] The touch sensor panel 100 may include a display portion A having sensing electrodes, a border portion B having traces B1 and bonding pads B2, etc.

[0055] The display portion A is for sensing touch signals and may be composed of a separator layer, a sensing electrode layer, etc.

[0056] The separator layer may be a polymer organic film and may be made of, for example, polyimide, polyvinyl alcohol, polyamic acid, polyamide, polyethylene, polystyrene, etc.

[0057] The sensing electrode layer is formed on the separator layer to sense whether a touch has occurred and may be formed of metal, metal nanowires, metal oxides, carbon nanotubes, graphene, conductive polymers, conductive inks, etc.

[0058] The border portion B may include: traces B1 having wirings for transmitting the touch signals sensed at the sensing electrode layer to the bonding pads; and bonding pads B2 for transmitting the touch signals transmitted via the wirings to the FPCB 200. The wirings and the bonding pads may be formed of conductors such as metal, metal nanowires, metal oxides, carbon nanotubes, graphene, conductive polymers, conductive inks, etc.

[0059] The FPCB 200 may include an FPC electrode layer 210, an upper cover layer 220, a lower cover layer 230, etc.

[0060] The FPC electrode layer 210 is a conductive layer, one side of which may be connected to the bonding pad B2. The FPC electrode layer 210 may be formed of a conductor such as metal, metal nanowires, metal oxides, etc.

[0061] The upper cover layer 220 is an insulating layer, which may be coupled to the upper portion of the FPC electrode layer 210. The upper cover layer 220 may be made of polyimide, etc. The upper cover layer 220 may be made of polyimide in the form of a film, and an epoxy adhesive layer may be formed on one side thereof to form a two-layer structure. For example, the polyimide film may have a thickness of 12 to 25 μm, and the epoxy adhesive layer may have a thickness of 25 μm.

[0062] The upper cover layer 220 may extend to cover at least a part of the trace B1 including the bonding pad B2. As Figure 2 shown, when the upper cover layer 220 extends to the region of the trace B1, the extended portion of the upper cover layer 220 may partially fill the spaces S (S1 and S2) between the touch sensor panel 100 and the protective layer 400 in the trace B1 region. As a result, the bonding degree between the touch sensor panel 100 and the protective layer 400 can be increased.

[0063] In addition, when the bonding degree between the touch sensor panel 100 and the protective layer 400 is increased, the spaces S (S1 and S2) between the touch sensor panel 100 and the protective layer 400 can be reduced compared with the prior art. As a result, the width of the trace B1 can be reduced, and in addition, the width of the border portion B can be reduced.

[0064] The lower cover layer 230 may be coupled to the lower portion of the FPC electrode layer 210 while opening a part of the lower surface of the FPC electrode layer 210. The lower cover layer 230 may be formed of an insulating layer such as polyimide like the upper cover layer 220. The lower cover layer 230 may be made of a polyimide film, and an epoxy adhesive layer may be formed on one side thereof to form a two-layer structure. The polyimide film may have a thickness of 12 to 25 μm, and the epoxy adhesive layer may have a thickness of 25 μm.

[0065] The conductive adhesive layer 300 may be coupled between the bonding pad B2 and the FPC electrode layer 210 to electrically connect the bonding pad B2 and the FPC electrode layer 210. The conductive adhesive layer 300 may be a conductive adhesive layer in which conductive fillers such as silver, copper, nickel, carbon, aluminum, and plating are dispersed in an adhesive such as epoxy resin, silicone resin, urethane, and polyimide resin. The conductive adhesive layer 300 may be an anisotropic conductive film (ACF) or an anisotropic conductive material layer.

[0066] The protective layer 400 may cover the upper cover layer 220 of the touch sensor panel 100 and the border portion B. The protective layer 400 may be a polarizing plate, a polarizer, a retardation film, a reflective sheet, a brightness enhancement film, a refractive index matching film, etc., or a laminate of two or more of them.

[0067] The protective layer 400 may form a stepped bending portion in the border portion B. The stepped bending portion may be caused by the extension of the upper cover layer 220 into the trace B1 region. When the upper cover layer 220 extends to the upper surface of the touch sensor panel 100, at least two stepped bending portions may be formed.

[0068] Figure 3 is a cross-sectional view of a touch sensor according to a second embodiment of the present invention.

[0069] AsFigure 3 As shown, in the second embodiment, the upper cover layer 220 may extend to at least a part of the trace B1 including the bonding pad B2.

[0070] Similar to the upper cover layer 220, the conductive adhesive layer 300 may also extend to at least a part of the trace B1 including the bonding pad B2. At this time, the conductive adhesive layer 300 may extend to the same length as the upper cover layer.

[0071] When the upper cover layer 220 and the conductive adhesive layer 300 extend to the trace B1 area, the extended portions of the upper cover layer 220 and the conductive adhesive layer 300 may partially fill the space trace between the touch sensor panel 100 and the protective layer 400 in the trace B1 area, and may increase the bonding degree between the touch sensor panel 100 and the protective layer 400. As a result, the width of the trace B1 can be reduced, which also reduces the width of the border portion B.

[0072] Since the remaining configuration of the second embodiment is the same as the corresponding configuration of the first embodiment, the detailed description of the remaining configuration is replaced by the relevant description of the first embodiment.

[0073] Figure 4 is a cross-sectional view of a touch sensor according to a third embodiment of the present invention.

[0074] As Figure 4 shown, in the third embodiment, the upper cover layer 220 may extend to at least a part of the trace B1 including the bonding pad B2.

[0075] Similar to the upper cover layer 220, the conductive adhesive layer 300 may also extend to at least a part of the trace B1 including the bonding pad B2. At this time, the conductive adhesive layer 300 may extend beyond the upper cover layer 220.

[0076] When the upper cover layer 220 and the conductive adhesive layer 300 extend to the trace B1 area, if the lower-position conductive adhesive layer 300 extends more than the higher-position upper cover layer 220, the extended portion 220 of the upper cover layer and the conductive adhesive layer 300 can more effectively fill the space between the touch sensor panel 100 and the protective layer 400 in the trace B1 area. As a result, the bonding degree between the touch sensor panel 100 and the protective layer 400 can be further increased. In addition, by further reducing the space S (S1, S2, and S3) between the touch sensor panel 100 and the protective layer 400 compared with the first and second embodiments, the width of the trace B1, that is, the width of the border portion B, can be further reduced compared with the first and second embodiments.

[0077] Since the remaining configurations of the third embodiment are the same as the corresponding configurations of the first embodiment, the detailed description of the remaining configurations is replaced by the relevant description of the first embodiment.

[0078] Figure 5 is a cross-sectional view of a touch sensor according to a fourth embodiment of the present invention.

[0079] As Figure 5 shown, in the fourth embodiment, the upper cover layer 220 may extend to a part of the trace B1 including the bonding pad B2.

[0080] Similar to the upper cover layer 220, the conductive adhesive layer 300 may also extend to at least a part of the trace B1 including the bonding pad B2, while extending shorter than the upper cover layer 220.

[0081] When the upper cover layer 220 and the conductive adhesive layer 300 extend to the trace B1, if the extension of the conductive adhesive layer 300 at the lower position is shorter than that of the upper cover layer 220 at the higher position, the upper cover layer 220 extends beyond the end of the extended conductive adhesive layer 300 to the upper surface of the touch sensor panel 100 to fill the space between the touch sensor panel 100 and the protective layer 400 in the trace B1 region, thereby increasing the bonding degree between the touch sensor panels 100. In this case, the improvement in the bonding degree between the touch sensor panel 100 and the protective layer 400, that is, the space S (S1, S2, and S3) between the touch sensor panel 100 and the protective layer 400, may be similar to that of the third embodiment. As a result, similar to the third embodiment, the width of the trace B1, that is, the width of the border portion B, can also be reduced.

[0082] Since the remaining configurations of the fourth embodiment are the same as the corresponding configurations of the first embodiment, the detailed description of the remaining configurations is replaced by the relevant description of the first embodiment.

[0083] Figure 6 is a cross-sectional view of a touch sensor according to a fifth embodiment of the present invention.

[0084] As Figure 6 shown, in the fifth embodiment, the FPC electrode layer 210 in the FPCB 200 may be configured as a multi-layer structure such as an insulating layer 211, an upper FPC electrode layer 212 connected to the upper part of the insulating layer 211, and a lower FPC electrode layer 213 connected to the lower part of the insulating layer 211. In this case, the upper cover layer 220 may be connected to the upper part of the upper FPC electrode layer 212, and the lower cover layer 230 may be connected to the lower part of the lower FPC electrode layer 213 while opening a part of the lower FPC electrode layer 213. The opened lower FPC electrode layer 213 may be connected to the bonding pad B2.

[0085] In the fifth embodiment having such a structure, similar to the first embodiment, the upper cover layer 220 may extend to at least a part of the trace B1 including the bonding pad B2. However, in the fifth embodiment, since the FPCB 200 is thicker than the FPCB 200 of the first embodiment, the step difference may be large. Therefore, it may be desirable to extend the upper cover layer 220 of the fifth embodiment longer than the upper cover layer 220 of the first embodiment.

[0086] When the upper cover layer 220 extends to the trace B1 region, the extended portion of the upper cover layer 220 partially fills the space between the touch sensor panel 100 and the protective layer 400 in the trace B1 region, thereby increasing the bonding degree between the touch sensor panel 100 and the protective layer 400. As a result, the width of the trace B1 is reduced, and thus the width of the border portion B is also reduced.

[0087] Although Figure 6 the illustration of the remaining configuration of the touch sensor is omitted, that is, the touch sensor panel 100, the conductive adhesive layer 300, the protective layer 400, etc., they can also be applied to the fifth embodiment. The detailed description of the remaining configuration is replaced by the relevant description of the first embodiment.

[0088] Figure 7 is a cross-sectional view of a touch sensor according to a sixth embodiment of the present invention.

[0089] As Figure 7 shown, in the sixth embodiment, similar to the fifth embodiment, the FPC electrode layer 210 may be configured as a multi-layer structure such as an insulating layer 211, an upper FPC electrode layer 212, a lower FPC electrode layer 213, etc.

[0090] In the sixth embodiment having such a structure, different from the fifth embodiment, the insulating layer 211 may extend to at least a part of the trace B1 including the bonding pad B2. In this case, the insulating layer 211 may extend as long as the upper cover layer 220 extends in the first embodiment.

[0091] When the insulating layer 211 extends to the trace B1 region, the extended portion of the insulating layer 211 partially fills the space between the touch sensor panel 100 and the protective layer 400 in the trace B1 region, thereby increasing the bonding degree between the touch sensor panel 100 and the protective layer 400. As a result, the width of the trace B1 is reduced, and thus the width of the border portion B is also reduced.

[0092] Although Figure 7The illustration of the remaining configurations of the touch sensor, i.e., the touch sensor panel 100, the conductive adhesive layer 300, the protective layer 400, etc., is omitted, but they can also be applied to the sixth embodiment. The detailed description of the remaining configurations is replaced by the relevant description of the first embodiment.

[0093] Figure 8 FIG. is for explaining the optimal extension length of the longest extension layer in the touch sensor according to the present invention.

[0094] In the touch sensor of the present invention, the upper cover layer 220, the conductive adhesive layer 300, or the insulating layer 211 can extend independently or in combination with other configurations to the trace B1 region. At this time, the longest extension length of the upper cover layer 220, the conductive adhesive layer 300, or the insulating layer 211 can be represented by the following formula:

[0095]

[0096] Here, aE is the thickness of the longest extension layer, an is the thickness of each laminated layer. T is the number of layers other than the longest extension layer, and "S" represents the number of layers from the lowest layer (including the conductive adhesive layer) to the layer immediately preceding the longest extension layer.

[0097] For example, in the touch sensor, an FPCB composed of a lower FPC electrode layer, an insulating layer, an upper FPC electrode layer, and an upper cover layer (the longest extension layer) is connected to the bonding pad via a conductive adhesive layer (an = 1). When the thicknesses of the conductive adhesive layer, the lower FPC electrode layer, the insulating layer, the upper FPC electrode layer, and the upper cover layer are 0.02 mm, 0.01 mm, 0.025 mm, 0.01 mm, and 0.04 mm, respectively, the optimal extension length of the upper cover layer, i.e., the longest extension layer is (0.02 + 0.01 + 0.025 + 0.01) + (0.02 + 0.01 + 0.025 + 0.01) - 0.04 + 0.2 = 0.25 mm. That is, when the upper cover layer extends to a length of 0.25 mm, the space between the touch sensor panel and the protective layer can be minimized, i.e., the bonding degree between the touch sensor panel and the protective layer can be maximized.

[0098] The window laminate according to the present invention may include the above touch sensor and a window substrate coupled to one side of the touch sensor.

[0099] The image display device according to the present invention may include the above touch sensor and a display panel coupled to one side of the touch sensor.

[0100] Above, the present invention has been described by various embodiments, which are intended to illustrate the present invention. Those skilled in the art will be able to change or modify these embodiments in other forms. However, since the scope of the present invention is defined by the following claims, it can be understood that such changes or modifications are included within the scope of the present invention.

[0101] Description of Reference Numerals

[0102] 10, 100: Touch Sensor Panel 20, 200: FPCB

[0103] 21, 210: FPC Electrode Layer 211: Insulating Layer

[0104] 212: Upper FPC Electrode Layer 213: Lower FPC Electrode Layer

[0105] 22, 220: Upper Cover Layer 23, 230: Lower Cover Layer

[0106] 24, 240: IC Chip 30, 300: Conductive Adhesive Layer

[0107] 40, 400: Protective Layer A: Display Portion (Display Area)

[0108] B: Border Portion (Border Area) B1: Trace (Trace Area)

[0109] B2: Bonding Pad (Bonding Area) S, S1, S2, S3: Space.

Claims

1. A touch sensor, comprising: A touch sensor panel, including a display portion having sensing electrodes and a border portion having traces and bonding pads; An FPCB, including: an FPC electrode layer, one side of the FPC electrode layer being connected to the bonding pad; an upper cover layer, the upper cover layer being coupled to the upper portion of the FPC electrode layer; and a lower cover layer, the lower cover layer being coupled to the lower portion of the FPC electrode layer while opening a part of the FPC electrode layer, wherein the upper cover layer extends to at least a part of the bonding pad and the traces; A conductive adhesive layer, the conductive adhesive layer being coupled between the bonding pad and the FPC electrode layer; and A protective layer, the protective layer covering the touch sensor panel and the upper cover layer of the border portion.

2. The touch sensor according to claim 1, wherein, The conductive adhesive layer extends to the extended end of the upper cover layer.

3. The touch sensor according to claim 1, wherein, The conductive adhesive layer extends beyond the extended end of the upper cover layer.

4. The touch sensor according to claim 1, wherein, The conductive adhesive layer extends shorter than the extended end of the upper cover layer.

5. A touch sensor, comprising: A touch sensor panel, including a display portion having sensing electrodes and a border portion having traces and bonding pads; An FPCB, including: an FPC electrode layer, one side of the FPC electrode layer being connected to the bonding pad; an upper cover layer, the upper cover layer being coupled to the upper portion of the FPC electrode layer; and a lower cover layer, the lower cover layer being coupled to the lower portion of the FPC electrode layer while opening a part of the FPC electrode layer, wherein the FPC electrode layer includes: an insulating layer; an upper FPC electrode layer, the upper FPC electrode layer being coupled to the upper portion of the insulating layer; and a lower FPC electrode layer, the lower FPC electrode layer being coupled to the lower portion of the insulating layer to connect to the bonding pad, and the insulating layer extends to at least a part of the bonding pad and the traces; A conductive adhesive layer, the conductive adhesive layer being coupled between the bonding pad and the FPC electrode layer; and A protective layer, the protective layer covering the touch sensor panel and the upper cover layer of the border portion.

6. The touch sensor according to claim 5, wherein, The conductive adhesive layer extends to the extended end of the insulating layer.

7. The touch sensor according to claim 5, wherein, The conductive adhesive layer extends beyond the extended end of the insulating layer.

8. The touch sensor according to claim 5, wherein, The conductive adhesive layer extends shorter than the extended end of the insulating layer.

9. The touch sensor according to any one of claims 5 to 8, wherein The protective layer forms two or more stepped bending portions in the border portion.

10. The touch sensor according to claim 9, wherein, The protective layer is at least one of a polarizing plate, a polarizer, a retardation film, a reflector, a brightness enhancement film, and a refractive index matching film.

11. The touch sensor according to any one of claims 5 to 8, wherein, The extended length l of the upper cover layer, the conductive adhesive layer, or the insulating layer is the longest among the upper cover layer, the conductive adhesive layer, and the insulating layer, and the extended length l is a value calculated by the following formula: Wherein, aE is the thickness of the longest extended layer, an is the thickness of each laminated layer, T is the number of layers other than the longest extended layer, and S is the number of layers from the lowest layer to the layer immediately preceding the longest extended layer.

12. A window laminate, comprising: A window substrate; And The touch sensor according to any one of claims 1 to 8, wherein the touch sensor is coupled to the window substrate.

13. An image display device, comprising: a display panel; and the touch sensor according to any one of claims 1 to 8, wherein the touch sensor is coupled to the display panel.

Images