Photo-sensitive element and liquid crystal display with the...

Details Photo-sensitive element and liquid crystal display with the... Photo-sensitive element and liquid crystal display with the...

2011-04-12

2011-04-12

Chien, Lucy P (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S012000

Reexamination Certificate

active

07924378

ABSTRACT:
A photo-sensitive element, a readout pixel with the photo-sensitive element, and a liquid crystal display with the readout pixels are described. The photo-sensitive element includes a switch TFT and a photo detecting device. The gate electrode of the switch TFT is electrically connected to a switch line and the source electrode of the switch TFT is electrically connected to a readout line. The photo detecting device is connected between the switch line and the drain electrode of the switch TFT for detecting the brightness of a light incident thereon. The photo detecting device is preferably a photo TFT, a photo diode, or a light sensitive resistor. The photo TFT and the switch TFT are preferably amorphous silicon transistors. The switch line is preferably a gate line disposed on the TFT array substrate of the liquid crystal display.

REFERENCES:
patent: 6831710 (2004-12-01), den Boer
patent: 7525523 (2009-04-01), Yamazaki et al.
patent: 2003/0179323 (2003-09-01), Abileah et al.
patent: 2005/0082968 (2005-04-01), Choi et al.
patent: 2005/0093851 (2005-05-01), Nakamura et al.
patent: 2005/0134751 (2005-06-01), Abileah et al.
patent: 2005-196737 (2005-07-01), None
English language translation of abstract of JP 2005-196737, Jul. 21, 2005.

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