Integrated optical light sensitive active matrix liquid...

Details Integrated optical light sensitive active matrix liquid... Integrated optical light sensitive active matrix liquid...

2006-03-07

2006-03-07

Chowdhury, Tarifur R. (Department: 2871)

Liquid crystal cells, elements and systems

Liquid crystal system

Liquid crystal writing tablet

C349S024000, C345S087000, C345S175000

Reexamination Certificate

active

07009663

ABSTRACT:
A liquid crystal device including a front electrode layer, rear electrode layer, a liquid crystal material located between the front electrode layer and the rear electrode layer. A polarizer is located between the liquid crystal material and the front electrode layer and changing an electrical potential between the rear electrode layer and the front electrode layer modifies portions of the liquid crystal material to change the polarization of the light incident thereon. A plurality of light sensitive elements are located together with the rear electrode layer and a processor determines the position of at least one of the plurality of light sensitive elements that has been inhibited from sensing ambient light.

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