Computer graphics processing and selective visual display system – Display driving control circuitry – Light detection means
Reexamination Certificate
2005-12-06
2010-11-09
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Light detection means
C345S092000, C345S204000, C349S042000, C349S047000
Reexamination Certificate
active
07830370
ABSTRACT:
There is provided a display device capable of automatically controlling a luminance in response to a brightness of a surrounding. The display device has a gamma correction circuit for converting an image signal voltage into a drive voltage for gray scale display and a photosensor for controlling an input and output voltage characteristic of the gamma correction circuit in response to the brightness of the surrounding. In this case, the gamma correction circuit for converting the image signal voltage into the driver voltage for gray scale display is formed on a first substrate. The photosensor for controlling the input and output voltage characteristic of the gamma correction circuit in response to the brightness of the surrounding is formed on a second substrate. The second substrate is fixed to the first substrate.
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Arai Yasuyuki
Kimura Hajime
Yamazaki Shunpei
Hjerpe Richard
Husch Blackwell LLP Welsh & Katz
Nguyen Jennifer T
Semiconductor Energy Laboratory Co,. Ltd.
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