Liquid crystal display device performing both image display mode and fingerprint recognition mode
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United States of America Patent
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Mar 24, 2009
Grant Date -
Sep 18, 2003
app pub date -
Dec 30, 2002
filing date -
Mar 12, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is a liquid crystal display device. The device comprises a scan drive unit for selectively outputting turn-on/turn-off signals in the image display mode and outputting turn-on signals in the fingerprint recognition mode; a data drive unit for outputting data signals in the image display mode; a switch control unit for outputting turn-off signals in the image display mode and for selectively outputting turn-on/turn-off signals in the fingerprint recognition mode; a reading unit for outputting fingerprint image information read in the fingerprint recognition mode; a sensor thin film transistor for driving liquid crystal in the image display mode; and a switch thin film transistor having a channel with a first end and a second end, a drain and a source.
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