Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Reexamination Certificate
2008-08-04
2010-02-02
Sohn, Seung C (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
C345S102000, C315S154000
Reexamination Certificate
active
07655890
ABSTRACT:
There are provided a light sensor, a display apparatus including the same, and a control method thereof. The display apparatus includes: a display panel which includes a display area through which an image is displayed and a non-display area. A light receiving transistor which is formed in the non-display area and receives outside light. A charging part which includes a first terminal is connected to a drain electrode of the light receiving part and a second terminal is connected to a direct current voltage terminal. A signal amplifying part which includes a first terminal and a second terminal which is connected to a source of reference voltage and receives a reference voltage. A charging switching part is connected between the first input terminal and the first terminal of the charging part. A controller is provided which controls the charging switching part according to a predetermined first cycle to charge or discharge the charging part.
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Cho Man-seung
Jeong Dong-jin
Kim Soon-dong
Lee Jin-hee
Lee Joo-hyung
Innovation Counsel LLP
Samsung Electronics Co,. Ltd.
Sohn Seung C
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