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Touch sensitive display device and driving apparatus thereof, and method of detecting a touch

  • US 7,920,128 B2
  • Filed: 09/20/2006
  • Issued: 04/05/2011
  • Est. Priority Date: 09/21/2005
  • Status: Expired due to Fees
First Claim
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1. A display device, comprising:

  • a display panel;

    a plurality of pixels disposed on the display panel;

    a plurality of first sensing units disposed on the display panel and generating first sensing signals in response to a touch exerted on the display panel; and

    a sensing signal processor configured to process the first sensing signals and generate second sensing signals for a plurality of frames, the sensing signal processor determining whether a touch occurs based on the second sensing signals for the plurality of frames, and the sensing signal processor determines whether a touch begins based on differences in the second sensing signals between a first frame and at least one second frame previous to the first frame, and determines whether a touch ends in the first frame based on differences in the second sensing signals between the first frame and a third frame previous to the first frame and between the third frame and one or more fourth frames that occur between the third frame and the first frame.

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