Electrostatic capacitance-type input device, method of manufacturing electrostatic capacitance-type input device, and electro-optical apparatus provided with input function

• US 8,698,776 B2
• Filed: 10/20/2010
• Issued: 04/15/2014
• Est. Priority Date: 10/27/2009
• Status: Active Grant

• Current Assignee: Japan Display West Incorporated (Japan Display Incorporated)
• Original Assignee: Japan Display West Incorporated (Japan Display Incorporated)
• Inventors: Kurashima, Takeshi
• Primary Examiner(s): Baldridge, Benjamin M
• Application Number:
  US12/908,142
• Publication Number:
  US 20110095770A1
• Time in Patent Office: 1,273 Days
• Field of Search: 324/679
• US Class Current: 345/174
• 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 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• 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
• CPC Class Codes: H05K 1/0218 by printed shielding conductors, ground planes or power plane H05K1/0236 takes precedence
• CPC Class Codes: H05K 1/117 Pads along the edge of rigid circuit boards, e.g. for pluggable connectors
• CPC Class Codes: H05K 3/361 Assembling flexible printed circuits with other printed circuits
• CPC Class Codes: Y10T 29/49002 Electrical device making

Abstract

An electrostatic capacitance-type input device includes: a translucent input device substrate that has a translucent position detecting electrode and a position detecting mount terminal electrically connected to the position detecting electrode on a first face side; a flexible wiring substrate that includes an overlapping portion overlapping with the first face side of the input device substrate and is electrically connected to the position detecting mount terminal in the overlapping portion; and a translucent shielding film that has a shield electrode layer and is disposed so as to overlap with a second face side of the input device substrate. The shielding film includes an extension portion that is folded back so as to overlap with the first face side of the input device substrate. The shielding film is electrically connected to the flexible wiring substrate through the extension portion.

Claims

1. An electrostatic capacitance-type input device comprising:

a translucent input device substrate that has a translucent position detecting electrode and a position detecting mount terminal electrically connected to the position detecting electrode on a first face side;

a flexible wiring substrate that includes an overlapping portion overlapping with the first face side of the input device substrate, wherein the flexible wiring substrate is electrically connected to the position detecting mount terminal in the overlapping portion; and

a translucent shielding film that has a shield electrode layer, wherein the translucent shielding film is disposed to cover a second face side of the input device substrate, and wherein the translucent shielding film includes a main body portion that covers the second face of the input device substrate and an extension portion that extends from the main body portion, wherein the extension portion is folded back so as to overlap with the first face side of the input device substrate, and

wherein the translucent shielding film is electrically connected to the flexible wiring substrate through the extension portion.

2. The electrostatic capacitance-type input device according to claim 1, wherein the shield electrode layer has sides facing the input device substrate and the flexible wiring substrate, and the shield electrode layer is exposed in the extension portion on the side of the flexible wiring substrate and

wherein the flexible wiring substrate overlaps with the extension portion so as to be electrically connected to the shield electrode layer.

3. The electrostatic capacitance-type input device according to claim 2,

wherein the shielding film includes an adhesive layer that bonds the shielding film to the second face side of the input device substrate, and

wherein the extension portion is bonded to the first face side of the input device substrate by the adhesive layer.

4. The electrostatic capacitance-type input device according to claim 2,

wherein the shielding film includes an insulating layer on a side of the shield electrode layer that is opposite to a side on which the input device substrate is positioned, and

wherein, in the extension portion, the shield electrode layer is exposed in an area in which the insulating layer is not formed.

5. The electrostatic capacitance-type input device according to claim 1, wherein the shield electrode layer has sides facing the input device substrate and the flexible wiring substrate, and the shield electrode layer is exposed in the extension portion on the side of the input device substrate and

wherein the input device substrate includes a shielding mount terminal that is electrically connected to both the shield electrode layer and the flexible wiring substrate.

6. The electrostatic capacitance-type input device according to claim 1,

wherein an arrangement area of the position detecting mount terminal is placed between a pair of the extension portions of the shielding film.

7. The electrostatic capacitance-type input device according to claim 6, wherein a pair of the extension portions are overlapped on the first surface of the input device substrate, on both sides of the arrangement area of the position detecting mount terminal.

8. The electrostatic capacitance-type input device according to claim 1, wherein the input device substrate has a shielding mount terminal that is formed on both sides of the arrangement area of the position detecting mount terminal,

wherein the extension portion overlaps a part of the shielding mount terminal to be electrically connected to the shielding mount terminal, and

wherein the flexible wiring substrate is electrically connected to the shielding mount terminal in an area where the flexible wiring substrate and the extension portion have no overlapping area.

9. An electro-optical apparatus provided with an input function comprising:

a translucent input device substrate that has a translucent position detecting electrode and a position detecting mount terminal electrically connected to the position detecting electrode on a first face side;

a flexible wiring substrate that includes an overlapping portion overlapping with the first face side of the input device substrate, wherein the flexible wiring substrate is electrically connected to the position detecting mount terminal in the overlapping portion; and

a translucent shielding film that has a shield electrode layer, wherein the translucent shielding film is disposed to cover a second face side of the input device substrate,

wherein the shielding film includes a main body portion that covers the second face of the input device substrate and an extension portion that extends from the main body portion and that is folded back so as to overlap with the first face side of the input device substrate,

wherein the shielding film is electrically connected to the flexible wiring substrate through the extension portion, and wherein an electro-optical panel for image generation is configured on a side of the input device substrate that is opposite to an input operation side.