Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1994-01-03
1995-05-02
Weldon, Ulysses
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345100, G09G 336
Patent
active
054123976
ABSTRACT:
A driving circuit for a matrix type liquid crystal display device is disclosed. The driving circuit comprises: a gate driver for, during a writing period, selectively driving a scanning line included in a group of scanning lines which correspond to the field to be scanned, and for, during an erasing period, selectively driving a scanning line included in another group of scanning lines which do not correspond to the field to be scanned; a source driver for, during said writing period of an even field, applying a signal voltage the level of which corresponds to a video signal, to the signal lines, and for, during the erasing period, applying a voltage to the signal lines to set the voltage applied to the picture elements to a level below the threshold level of the picture elements; and another source driver for, during said writing period of an odd field, applying a signal voltage the level of which corresponds to a video signal, to the signal lines, and for, during the erasing period, applying a voltage to the signal lines to set the voltage applied to the picture elements to a level below the threshold level of the picture elements. The writing period and the erasing period shares one horizontal scanning period.
REFERENCES:
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patent: 4602292 (1986-07-01), Togashi et al.
patent: 4789899 (1988-12-01), Takahashi et al.
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patent: 4908710 (1990-03-01), Wakai et al.
Fukuoka Hirofumi
Kanatani Yoshiharu
Orii Yoshihiko
Sharp Kabushiki Kaisha
Weldon Ulysses
Wu Xiao M.
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