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32.2: Touch‐Panel Controller Implemented with LTPS TFTs
Author(s) -
Pi JaeEun,
Pyo ChangShin,
Kim ByeongHoon,
Park KeeChan,
Kim Youngil,
Eom JiHye,
Choi JaeBeom,
Park Seongil,
Lee Baekwoon,
Hwang Youngin,
Kim ChiWoo
Publication year - 2009
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 - 10.1889/1.3256811
Subject(s) - flat panel , controller (irrigation) , flat panel display , resistive touchscreen , voltage , liquid crystal display , signal (programming language) , computer science , electrical engineering , computer hardware , materials science , engineering , computer graphics (images) , optoelectronics , agronomy , biology , programming language
A touch panel controller has been implemented with LTPS TFTs on a glass substrate. It induces voltage gradient across either plate of a 4‐wire resistive touch panel and senses the intermediate potential at the touch position via the other plate. Then it converts the acquired analog voltage into digital signal and outputs 3‐bit digital data for the horizontal and vertical positions respectively.