Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2003-04-11
2008-11-18
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S204000, C345S205000, C345S690000, C345S001100, C345S003100
Reexamination Certificate
active
07453434
ABSTRACT:
A liquid crystal display device with both functions of transmission-mode display and reflection-mode display is capable of providing an improved display quality in each display mode, to thereby obtain on-screen display images of high quality in either one of the display modes. The liquid crystal display device includes a scan signal line drive circuit operable to apply a scan signal to a number of scan signal lines, an image/video signal line drive circuit which applies an image signal to a number of image signal lines, and a power supply circuit for supplying necessary voltages to the scan signal line drive circuit and image signal line drive circuit. The power supply circuit includes a counter electrode voltage generation circuit for selecting a voltage optimized for a respective display mode of the transmission mode and the reflection mode to thereby apply the selected voltage to a counter electrode.
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Hashimoto Shinya
Takahashi Hiroyuki
Yamada Takahiro
Antonelli, Terry Stout & Kraus, LLP.
Hitachi Device Engineering & Co., Ltd.
Hitachi Displays Ltd.
Hjerpe Richard
Shapiro Leonid
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