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Touch-sensitive liquid crystal display device with built-in touch mechanism

  • US 20090295747A1
  • Filed: 05/28/2009
  • Published: 12/03/2009
  • Est. Priority Date: 05/30/2008
  • Status: Abandoned Application
First Claim
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1. A touch-sensitive liquid crystal display (LCD) device comprising:

  • a first substrate;

    a second substrate generally opposite to the first substrate;

    a liquid crystal layer sandwiched between the first substrate and the second substrate;

    a first sensing line and a second sensing line formed at an inner side of the first substrate on a side adjacent to the liquid crystal layer; and

    a reference capacitor and a variable capacitor formed at the inner side of the first substrate, the reference capacitor and the variable capacitor electrically connected in series;

    wherein a node between the reference capacitor and the variable capacitor is coupled to the first sensing line and the second sensing line, and a capacitance of the variable capacitor is changeable depending on an external pressure applied on the first substrate.

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