한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
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Touch Screen Panel by using Liquid Crystal Capacitance Variation embedded in LTPS AMLCD

  • Lee, Woo-Cheul (Seoul National University, School of Electrical Engineering and Computer Science) ;
  • Ha, Tae-Jun (Seoul National University, School of Electrical Engineering and Computer Science) ;
  • Park, Hyun-Sang (Seoul National University, School of Electrical Engineering and Computer Science) ;
  • Lee, Jeong-Soo (Seoul National University, School of Electrical Engineering and Computer Science) ;
  • Han, Min-Koo (Seoul National University, School of Electrical Engineering and Computer Science)
  • Published : 2008.10.13
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Abstract

We present a new touch screen method, which utilizes the variation of liquid crystal capacitance according to the touch event on the screen. It is integrated in the AMLCD with the conventional LTPS process. Its resolution is same as the display resolution as well as performs the multi-touch sensing function basically. The design concept and the operation are verified with the SPICE simulation.

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