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

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.

The invention is claimed as follows: 
     
         1 . An electrostatic capacitance input device comprising:
 a substrate including an input region where an input operation is detected and an outer region where the input operation is not detected, the input region including a center portion of the substrate as seen in plan view, the outer region being between an outer periphery of the input region and an outer periphery of the substrate as seen in plan view;   a plurality of input position detection electrodes arranged in the input region;   a plurality of first wires that are electrically connected to the plurality of input position detection electrodes and extend in the outer region of the substrate, and each of which has a terminal arranged in the outer region;   a shield electrode that extends in an extending direction of at least one of the first wires, has a terminal arranged in the outer region, and overlaps the at least one of the first wires;   an insulating layer between the shield electrode and the at least one of the first wires; and   a semiconductor chip including a plurality of output terminals, operatively connected to the input position detection electrodes and the shield electrode, and configured to cause a position detection signal to be applied to the input position detection electrodes with a potential having the same waveform and phase as a potential that is applied to the shield electrode,   wherein each of the terminal of the shield electrode and the terminals of the first wires is connected to a corresponding one of the output terminals of the semiconductor chip.   
     
     
         2 . The electrostatic capacitance input device of  claim 1 ,
 wherein the terminal of the shield electrode and the terminals of the first wires are arrayed along only one side of the substrate.   
     
     
         3 . The electrostatic capacitance input device of  claim 1 , further comprising:
 a wiring board; and   a plurality of second wires arranged on the wiring board,   wherein the semiconductor chip is arranged on the wiring board,   wherein each of the terminal of the shield electrode and the terminals of the first wires is connected to a corresponding one of the output terminals of the semiconductor chip via the second wires.   
     
     
         4 . The electrostatic capacitance input device of  claim 1 , further comprising:
 a wiring board; and   a plurality of second wires arranged on the wiring board,   wherein the semiconductor chip is arranged on the wiring board,   wherein each of the terminal of the shield electrode and the terminals of the first wires is connected to a corresponding one of the output terminals of the semiconductor chip via the second wires,   wherein the terminal of the shield electrode and the terminals of the first wires are arrayed along only one side of the substrate, and   wherein the wiring board is connected to the one side of the substrate along which the terminal of the shield electrode and the terminals of the first wires are arrayed.   
     
     
         5 . The electrostatic capacitance input device of  claim 1 ,
 wherein materials making up the shield electrode include metal.   
     
     
         6 . The electrostatic capacitance input device of  claim 1 ,
 wherein materials making up the first wires include metal.