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24.3: Hybrid Touch Screen Panel Integrated in TFT‐LCD
Author(s) -
Lee Joohyung,
Park JongWoung,
Jung DongJin,
Pak Sangjin,
Cho Manseung,
Uh Keehan,
Kim HyungGuel
Publication year - 2007
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2785499
Subject(s) - liquid crystal display , thin film transistor , resistive touchscreen , materials science , capacitive sensing , capacitance , line (geometry) , flat panel , fabrication , optoelectronics , computer graphics (images) , computer science , electrical engineering , engineering , electrode , nanotechnology , physics , layer (electronics) , quantum mechanics , geometry , mathematics , medicine , alternative medicine , pathology
It is, for the first time, presented that the touch panel function is fully integrated in 2.45 inch amorphous silicon QVGA TFT‐LCD using liquid crystal capacitive line sensor arrays with the same fabrication process as TFT‐LCD. It is capable of detecting touch event and finding touch positions by the capacitance change of liquid crystal in LCD. It demonstrates outstanding display qualities and superiority in size and thickness compared to conventional resistive touch screen panel.