Liquid crystal display device performing both image display mode and fingerprint recognition mode

摘要

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.