THIN-FILM TRANSISTOR IMAGER
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United States of America Patent
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Issued Date -
Jul 29, 2010
app pub date -
Jan 23, 2009
filing date -
Jan 23, 2009
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An optical input device for finger input on an electronic computing device. The optical input device includes a thin-film transistor (TFT) imager and an integrated circuit (IC). The TFT imager includes a protective layer, a substrate, and a TFT array. The protective layer has a finger contact surface. The TFT array includes photo-sensitive thin-film transistors disposed on a surface of the substrate, between the substrate and the protective layer. The TFT array generates image signals corresponding to physical features of a user's finger in contact with the finger contact surface of the protective layer. The integrated circuit is coupled to the TFT imager. The integrated circuit processes the image signals from the TFT array.
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