Patent ID: 8242998
Filing Date: 2012-08-14
Classification: G02F,G06F

Abstract:
1. A liquid crystal display, comprising: a thin film transistor (TFT) substrate; a color filter substrate opposite to the TFT substrate; and a liquid crystal sandwiched between the TFT substrate; wherein the color filter substrate comprises a plurality of color units and a first infrared detection layer arranged between the color units, and the first infrared detection layer comprising a plurality of P-areas, N-areas, and PN-junctions formed between the adjacent P-areas and N-areas, a plurality of first buses parallel to each other and extending along the first direction, a plurality of second buses parallel to each other and extending along the second direction perpendicular to the first direction, a plurality of first leads and a plurality of second leads; wherein, when the P-areas and the N-areas are irradiated by infrared light beams, photogenic charge carriers are generated and result in a measurable voltage, and an irradiated position of the first infrared detection layer where the first infrared beams irradiate on is determined according to the measurable voltage; wherein, the first infrared detection layer surrounds each of the color units, thereby defining a plurality of detection blocks, and in each detection block, each first lead connected to a corresponding one of the P-areas and a corresponding one of the first buses, and each second lead connected to a corresponding one of the N-areas and a corresponding one of the second buses.