Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2006-02-28
2006-02-28
Shankar, Vijay (Department: 2673)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S096000, C345S100000, C345S209000
Reexamination Certificate
active
07006069
ABSTRACT:
In a display device having a pixel array in which a plurality of pixels are arranged two-dimensionally along a first direction and a second direction, each of the pixels includes a pair of electrodes applying a voltage to liquid crystals, respective groups of the pixels arranged along the first direction form a plurality of pixel-rows juxtaposed along the second direction, and respective groups of the pixels arranged along the second direction form a plurality of pixel-columns juxtaposed along the first direction, the present invention repeats a first step for selecting every Y rows of the pixel-rows sequentially along the second direction N-times and applying an image signal to one of the pair of electrodes provided for each one of the pixels belonging to the each Y rows of the pixel-rows as selected, and a second step for selecting every Z rows of the pixel-rows sequentially along the second direction M-times and applying a blanking signal to the one of the pair of electrodes provided for each one of the pixels belonging to the each Z rows of the pixel-rows as selected, alternately while the Y, the N, the Z, and the M are natural numbers satisfying relationship of M<N and Y<N/M≦Z, and another of the pair of electrodes in each of the pixels is kept at a reference voltage; and inverts polarity of the blanking signal supplied to each one of the pixel-columns in regard to the reference voltage to that of the image signal supplied to the each one of the pixel-columns subsequently to the blanking signal, so that horizontal stripes are prevented from appearing in a image displayed by the pixel array.
REFERENCES:
patent: 5510805 (1996-04-01), Lee
patent: 5648790 (1997-07-01), Lee
patent: 6448718 (2002-09-01), Battersby
patent: 6882103 (2005-04-01), Kim et al.
Nakamura Masashi
Nitta Hiroyuki
Takeda Nobuhiro
Tanaka Masahiro
Antonelli, Terry Stout and Kraus, LLP.
Hitachi Device Engineering & Co., Ltd.
Hitachi Displays Ltd.
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