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Touch sensing error compensation

  • US 10,185,443 B2
  • Filed: 09/28/2015
  • Issued: 01/22/2019
  • Est. Priority Date: 06/07/2010
  • Status: Active Grant
First Claim
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1. A touch screen comprising:

  • a drive region configured to be driven by a drive signal;

    a sense region disposed adjacent to the drive region, the sense region configured to output a sense signal that includes information of a first amount of touch on or near the touch screen and information of a first amount of error, wherein the first amount of touch is based on the drive signal;

    a compensation sensor disposed between the drive region and the sense region, the compensation sensor configured to output a compensation signal that includes information of a second amount of error, wherein the second amount of error is based on the drive signal; and

    an error compensator configured to extract the second amount of error from the compensation signal and to compensate for the first amount of error in the sense signal based on the extracted second amount of error obtained from the compensation signal.

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