TOUCH PANEL, DISPLAY DEVICE, AND ELECTRONIC APPARATUS

• US 20130201122A1
• Filed: 11/20/2012
• Published: 08/08/2013
• Est. Priority Date: 02/08/2012
• Status: Active Grant

• Current Assignee: Japan Display West Incorporated (Japan Display Incorporated)
• Original Assignee: Japan Display West Incorporated (Japan Display Incorporated)
• Inventors: Kurashima, Takeshi, Hinata, Shoji
• Granted Patent: US 10,019,083 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• 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 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• 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

Abstract

Disclosed herein is a touch panel including: a sensor substrate and a cover substrate stuck to each other. The sensor substrate includes a sensor electrode, and plural signal wirings electrically connected to the sensor electrode and extending along a periphery of the sensor electrode. The cover substrate includes one or plural conductive layers extending along the periphery of the sensor electrode and the plural signal wirings within an area not facing the sensor electrode and the plural signal wirings.

Claims

1. A touch panel, comprising:

a sensor substrate and a cover substrate stuck to each other,

wherein said sensor substrate includes a sensor electrode, and plural signal wirings electrically connected to said sensor electrode and extending along a periphery of said sensor electrode, and

said cover substrate includes one or plural conductive layers extending along the periphery of said sensor electrode and said plural signal wirings within an area not facing said sensor electrode and said plural signal wirings.

2. The touch panel according to claim 1, wherein each of said one or plural conductive layers has a thicker width than that of each of said plural signal wirings.

3. The touch panel according to claim 1, wherein each of said one or plural conductive layers is made of a metallic material.

4. The touch panel according to claim 3, further comprising

a flexible printed wiring board connected to said sensor substrate, and having a wiring layer electrically connected to said plural signal wirings, and a fixed electric potential layer electrically connected to said one or plural conductive layers.

5. The touch panel according to claim 1, wherein each of said one or plural conductive layers is made of a material having a conductive property, elasticity, and viscosity.

6. A display device, comprising:

an image generating device configured to generate an image;

a touch panel disposed on a surface of said image generating device; and

a controller configured to control said image generating device and said touch panel,

wherein said touch panel includes

a sensor substrate and a cover substrate stuck to each other,

said sensor substrate including a sensor electrode, and plural signal wirings electrically connected to said sensor electrode and extending along a periphery of said sensor electrode,

said cover substrate including one or plural conductive layers extending along the periphery of said sensor electrode and said plural signal wirings within an area not facing said sensor electrode and said plural signal wirings.

7. An electronic apparatus, comprising:

a display device including

an image generating device configured to generate an image,

a touch panel disposed on a surface of said image generating device, and

a controller configured to control said image generating device and said touch panel,

wherein said touch panel includes

a sensor substrate and a cover substrate stuck to each other,

said sensor substrate including a sensor electrode, and plural signal wirings electrically connected to said sensor electrode and extending along a periphery of said sensor electrode,

said cover substrate including one or plural conductive layers extending along the periphery of said sensor electrode and said plural signal wirings within an area not facing said sensor electrode and said plural signal wirings.