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Sensing during non-display update times

  • US 9,418,626 B2
  • Filed: 06/30/2015
  • Issued: 08/16/2016
  • Est. Priority Date: 02/26/2010
  • Status: Active Grant
First Claim
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1. A method of capacitive sensing using an integrated capacitive sensor device and display device comprising a plurality of combination electrodes, said method comprising:

  • driving a first combination electrode of said plurality of combination electrodes for capacitive sensing during a first non-display update time period of a first frame;

    driving a second combination electrode of said plurality of combination electrodes for capacitive sensing during a second non-display update time period of said first frame; and

    driving a third combination electrode of said plurality of combination electrodes for capacitive sensing during a third non-display update time period of said first frame, said plurality of combination electrodes configured for both capacitive sensing and display updating, wherein said first non-display update time period occurs before a first display row update time of said first frame, said second non-display update time period occurs between said first display row update time and a second display row update time of said first frame, and said third non-display update time period occurs after said second display row update time, wherein said plurality of combination electrodes operate as a common voltage electrode during display update of said integrated capacitive sensor device and display device,wherein driving said first combination electrode, said second combination electrode, and said third combination electrode for capacitive sensing comprises driving said first combination electrode, said second combination electrode, and said third combination electrode, respectively, with a signal that transitions at least twice during each respective non-display update time period of said display device.

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