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Touch sensor, display device, and electronic apparatus

  • US 9,678,595 B2
  • Filed: 09/12/2014
  • Issued: 06/13/2017
  • Est. Priority Date: 05/26/2009
  • Status: Expired due to Fees
First Claim
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1. A touch sensor comprising:

  • a sensor electrode having an electrostatic capacitance for touch detection;

    a touch detection circuit that performs a detection of a contact or proximity position of an object, on the basis of a detection signal obtained from the sensor electrode by applying a touch sensor drive signal to the sensor electrode,wherein the sensor electrode is split into a plurality of electrode patterns in a stripe shape, and application of the touch sensor drive signal to part of the plurality of electrode patterns causes a drive line to be formed at that time,the touch detection circuit performs the detection on the basis of a first detection signal obtained from a first drive line formed in a first period, and a second detection signal obtained from a second drive line formed in a second period different from the first period, andthe touch detection circuit performs the detection on the basis of a differential signal between the first detection signal and the second detection signal.

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