Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2006-05-12
2010-02-16
Mengistu, Amare (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S054000, C345S209000
Reexamination Certificate
active
07663590
ABSTRACT:
A liquid crystal display has pixel electrodes, a common electrode, a liquid crystal layer provided between the pixel electrodes and the common electrode, and a back light that supplies light transmitting through the liquid crystal layer, further has a control circuit that applies a drive voltage corresponding to image data between the pixel electrodes and the common electrode such that the polarity of the drive voltage is inverted for each predetermined period. Within a frame period, the control circuit applies a drive voltage of a first polarity in a first period, applies a drive voltage of a second polarity opposite to the first polarity, which is the same voltage as the drive voltage of the first polarity, in a second period after the first period, and controls such that the back light is turned off in the first period and turned on in the second period.
REFERENCES:
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patent: 6873311 (2005-03-01), Yoshihara et al.
patent: 7221344 (2007-05-01), Shimomaki
patent: 7427974 (2008-09-01), Asao et al.
patent: 2005/0190138 (2005-09-01), Jung
patent: 2000180820 (2000-06-01), None
patent: 2004-219938 (2004-08-01), None
Harness & Dickey & Pierce P.L.C.
Mengistu Amare
Sharifi Koosha
Sharp Kabushiki Kaisha
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