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56.3: Active Matrix LCD with Integrated Optical Touch Screen
Author(s) -
Boer Willem,
Abileah Adi,
Green Pat,
Larsson Terrance,
Robinson Scott,
Nguyen Tin
Publication year - 2003
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 - 10.1889/1.1832568
Subject(s) - stylus , liquid crystal display , active matrix , shadow mask , shadow (psychology) , computer graphics (images) , computer science , multi touch , optoelectronics , materials science , matrix (chemical analysis) , thin film transistor , computer hardware , optics , computer vision , physics , nanotechnology , psychology , composite material , layer (electronics) , psychotherapist
A 2.4 in. by 2.4 in. TFT LCD is presented with an embedded 60×60 array of a‐Si photo sensors, for use as a high performance touch‐enabled LCD with low cost. In the shadow mode the optical touch screen operates with finger or stylus input under ambient lighting conditions from 50 lux to 50 klux.