Light sensor assembly having light-sensing portion and...

Details Light sensor assembly having light-sensing portion and... Light sensor assembly having light-sensing portion and...

2008-04-07

2010-02-16

Sohn, Seung C (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

C250S216000, C345S102000, C257S434000

Reexamination Certificate

active

07663080

ABSTRACT:
An exemplary light sensor (20) includes a supporting base, a light-sensing unit (21) provided at at least one first location of the supporting base where ambient light is received, and a compensating unit (22) provided at a second location of the supporting base shielded from ambient light, the compensating unit having a structure that is the same as the light-sensing portion. The light-sensing portion includes at least one amorphous silicon thin film transistor (TFT) (210) configured for sensing light, and the compensating unit is configured for providing a reference value current for the light-sensing unit. A display device using the light sensor is also provided.

REFERENCES:
patent: 6489631 (2002-12-01), Young et al.
patent: 7453424 (2008-11-01), Johnson et al.
patent: 7462811 (2008-12-01), Cok et al.
patent: 7474283 (2009-01-01), Fish
patent: 7498649 (2009-03-01), Koide et al.
patent: 7538305 (2009-05-01), Shin

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