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37.3: A 10‐Touch Capacitive‐Touch Sensor Circuit with the Time‐Domain Input‐Node Isolation
Author(s) -
Lee Jaeseung,
Yeo DongHee,
Um JiYong,
Song EunWoo,
Sim JaeYoon,
Park HongJune,
Seo SeongMo,
Shin MyeongHo,
Cha DongHoon,
Lee Heesub
Publication year - 2012
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 - 10.1002/j.2168-0159.2012.tb05825.x
Subject(s) - integrator , capacitive sensing , noise immunity , noise (video) , node (physics) , isolation (microbiology) , compensation (psychology) , computer science , time domain , computer hardware , electrical engineering , electronic circuit , engineering , acoustics , physics , artificial intelligence , computer vision , psychology , voltage , psychoanalysis , image (mathematics) , microbiology and biotechnology , biology
A 10‐touch performance is achieved by using a mutual‐capacitive touch sensor. To increase the immunity to display‐generated noise, an integrator is used with the input node isolated from touch sensor panel (TSP) during the high‐LCD‐noise period, controlled by the gate‐driver clock. This increases SNR by more than 15 dB.