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DISPLAY DEVICE WITH OPTICAL SENSORS

  • US 20090289915A1
  • Filed: 05/20/2009
  • Published: 11/26/2009
  • Est. Priority Date: 05/21/2008
  • Status: Active Grant
First Claim
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1. A display device comprising:

  • a plurality of first sensing units, each first sensing unit comprising first optical sensors connected in series to each other, each first sensing unit comprising a first terminal which receives a first voltage, each first sensing unit extending in a first direction;

    a plurality of second sensing units, each second sensing unit comprising second optical sensors connected in series to each other, each second sensing unit comprising a first terminal which receives a second voltage, each second sensing unit extending in a second direction transverse to the first direction;

    a reset unit which is connected to a second terminal of each of the first and second sensing units and is which applies a reset voltage to the second terminal of each of the first and second sensing units; and

    a read-out unit which senses a touch position based on voltage changes at the second terminals of the first and second sensing units.

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