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Capacitive touch detecting device and method using level shift, and display device using the same

  • US 9,772,732 B2
  • Filed: 07/28/2015
  • Issued: 09/26/2017
  • Est. Priority Date: 09/01/2010
  • Status: Active Grant
First Claim
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1. A capacitive touch screen panel, comprising:

  • a plurality of sensor patterns, each of the sensor patterns forming a touch capacitance between a touch input instrument and the sensor pattern;

    a common electrode that forms a common electrode capacitance between the sensor pattern and the common electrode; and

    a plurality of touch drive ICs that control the sensor patterns,wherein the sensor pattern is directly disposed on an upper surface of a color filter of a display device,wherein the common electrode is directly disposed on a lower surface of the color filter,wherein the touch drive ICs are directly mounted on the upper surface of the color filter in a form of a chip on glass (COG), and the touch drive ICs include at least one master touch drive IC and at least one slave touch drive IC,wherein the master touch drive IC and the slave touch drive IC scan the touch screen panel based on a pre-determined scanning priority or a scanning order, andwherein the sensor patterns are grouped and connected with the master touch drive IC and the slave touch drive IC through a multiplexer, signals from sensor patterns within a group are multiplexed by the multiplexer, and the signal from each of the sensor patterns within the group is individually processed.

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