Electrostatic capacitance input device and electro-optical device having input device

• US 8,836,346 B2
• Filed: 06/12/2013
• Issued: 09/16/2014
• Est. Priority Date: 07/27/2009
• 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): NATALINI, JEFF WILLIAM
• Application Number:
  US13/916,220
• Publication Number:
  US 20130271425A1
• Time in Patent Office: 461 Days
• Field of Search: None
• US Class Current: 324/658
• 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
• CPC Class Codes: H05K 1/0216 Reduction of cross-talk, noise or electromagnetic interference grounding H05K1/0215

Abstract

Disclosed herein is an electrostatic capacitance input device including: an input region of a substrate, in which a plurality of input position detection electrodes are provided; a plurality of wires that are electrically connected to the plurality of input position detection electrodes and extend outside the input region of the substrate; and a shield electrode that overlaps the wires on the input operation side.

Claims

1. An electrostatic capacitance input device comprising:

an input region of a substrate, in which a plurality of input position detection electrodes are provided;

a plurality of wires that are electrically connected to the plurality of input position detection electrodes and extend outside the input region of the substrate;

a shield electrode that overlaps the wires on the input operation side;

a flexible wiring board including

a plurality of flexible wiring board internal wires that are electrically connected to the plurality of wires outside the input region of the substrate, and

a flexible wiring board shield layer formed around the flexible wiring board internal wires; and

shielding wires for applying a shield potential to the flexible wiring board shield layer and the shield electrode,

wherein the shield potential applied to the flexible wiring board shield layer and the shield electrode has the same waveform and phase as a position detection signal supplied to the input position detection electrodes.