INPUT DEVICE, DISPLAY DEVICE, ELECTRONIC DEVICE, AND MOBILE TERMINAL

• US 20150062456A1
• Filed: 03/21/2013
• Published: 03/05/2015
• Est. Priority Date: 03/21/2012
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: Miyazaki, Yoshio, Tsurusaki, Kouji, Chaen, Katsuya, Tokumori, Hiroshi, Yamagata, Natsuko
• Granted Patent: US 9,915,979 B2
• Time in Patent Office: Days
• US Class Current: 349/12
• CPC Class Codes: G06F 1/1643 the display being associated to a digitizer, e.g. laptops that can be used as penpads details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

[Object] To provide an input device, a display device, an electronic device, and a mobile terminal such that the reliability of the electrical connection between a detection wiring and a wiring board can be improved.

[Solution] An input device X1 includes a substrate 2, a first colored layer 6 that is provided on the substrate 2, a first detection electrode 3a that is provided on the substrate 2, a detection wiring 8 that is provided on the first colored layer 6 and is electrically connected to the first detection electrode 3a, and a wiring board 10 that is electrically connected to the detection wiring 8 through an adhesive member T1 containing conductive particles P1, the detection wiring 8 extends from a position on the first colored layer 6 to a position on a part of the substrate 2 in which the first colored layer 6 is not included, and if the detection wiring 8 located on a part of the substrate 2 in which the first colored layer 6 is not included is an extension section 8a, the adhesive member T1 is located between the extension section 8a and the wiring board 10.

Claims

1. An input device comprising:

a substrate;

a first colored layer that is provided on the substrate;

a detection electrode that is provided on the substrate;

a detection wiring that is provided on the first colored layer and is electrically connected to the detection electrode; and

a wiring board that is electrically connected to the detection wiring through an adhesive member containing conductive particles,

wherein the detection wiring extends from a position on the first colored layer to a position on a part of the substrate in which the first colored layer is not included, and

wherein the adhesive member is located between the wiring board and an extension section of the detection wiring located on a part of the substrate in which the first colored layer is not included.

2. The input device according to claim 1,

wherein a first cut-out portion is provided on a part of the first colored layer, and

wherein the extension section overlaps the first cut-out portion in plan view.

3. The input device according to claim 2,

wherein a thickness of the extension section is smaller than a thickness of the first colored layer.

4. The input device according to claim 1,

wherein a surface of a first edge portion of the first colored layer forms a curved surface,

wherein a part of the detection wiring is provided on the first edge portion, and

wherein the extension section is contiguous with a part of the detection wiring on the first edge portion.

5. The input device according to claim 1, further comprising:

a protective layer on the first colored layer,

wherein the detection wiring is located on the protective layer, and

wherein the extension section is located on a part of the substrate in which the first colored layer and the protective layer are not included.

6. The input device according to claim 2, further comprising:

a protective layer on the first colored layer,

wherein the detection wiring is located on the protective layer,

wherein a second cut-out portion is provided corresponding to the first cut-out portion on a part of the protective layer, and

wherein the extension section is disposed in an area in which the first cut-out portion and the second cut-out portion overlap when seen in plan view.

7. The input device according to claim 5,

wherein a surface of a second edge portion of the protective layer forms a curved surface,

wherein a part of the detection wiring is provided on the second edge portion, and

wherein the extension section is contiguous with a part of the detection wiring on the second edge portion.

8. The input device according to claim 1, further comprising:

a conductive layer on the extension section,

wherein the conductive layer is electrically connected to the wiring board through the adhesive member.

9. The input device according to claim 1,

wherein the substrate includes a first main surface and a second main surface located on a side opposite to the first main surface,

wherein the first main surface is located closer to an input operation side than the second main surface, and

wherein the first colored layer, the detection electrode, and the detection wiring are provided on the second main surface side.

10. The input device according to claim 9, further comprising:

a second colored layer on the first main surface of the substrate,

wherein the second colored layer overlaps the extension section in plan view.

11. The input device according to claim 1, further comprising:

a light shielding layer on the wiring board,

wherein the light shielding layer overlaps the extension section in plan view.

12. The input device according to claim 11,

wherein the light shielding layer has conductivity.

13. The input device according to claim 1,

wherein the extension section is made of a conductive member having a light-transmitting property.

14. The input device according to claim 1, further comprising:

an intermediate layer between the substrate and the extension section,

wherein the detection wiring extends on the intermediate layer from a position on the first colored layer, and

wherein the intermediate layer is harder than the first colored layer.

15. The input device according to claim 14,

wherein a thickness difference between the intermediate layer and the first colored layer is smaller than a thickness of the first colored layer.

16. The input device according to claim 1,

wherein the substrate is harder than the first colored layer.

17. A display device comprising:

the input device according to claim 1; and

a display panel located to face the input device.

18. An electronic device comprising:

the display device according to claim 17; and

a housing in which the display device is accommodated.

19. A mobile terminal comprising:

the display device according to claim 17;

a voice input unit;

a voice output unit; and

a housing in which the display device, the voice input unit, and the voice output unit are accommodated.