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Touch sensor device

  • US 8,581,867 B2
  • Filed: 03/25/2009
  • Issued: 11/12/2013
  • Est. Priority Date: 10/24/2008
  • Status: Active Grant
First Claim
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1. A touch sensor device, comprising:

  • a touch panel including a plurality of touch keys indicating a position touched by a touch object;

    a plurality of first touch pads disposed at positions corresponding to the plurality of touch keys of the touch panel and generating touch information of the touch object as a first electrical signal;

    a plurality of second touch pads disposed adjacent the plurality of first touch pads and generating touch information of a conductive material on the touch object as a second electrical signal, each of the plurality of second touch pads not having a corresponding touch key; and

    a touch sensing unit receiving the first electrical signal, outputting a plurality of sensing signals to allow an electronic device to perform predetermined operations corresponding to the touched touch keys, and determining whether the touch of the touch object is a normal one using the first and second electrical signals.

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