Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2007-12-25
2007-12-25
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S090000, C345S097000, C345S205000, C345S690000
Reexamination Certificate
active
10722293
ABSTRACT:
In each sub-frame, data writing scanning is performed twice continuously, and then data erasing scanning is performed twice continuously. The applied voltage in the data writing scanning and the applied voltage in the data erasing scanning are substantially equal in magnitude, but opposite in polarity. After a response of the liquid crystal by the first application of voltage, the cell charge decreases and the responsiveness of liquid crystal decreases. However, with the second application of voltage of the same polarity, charges corresponding to the applied voltage are stored again in the liquid crystal cell, and the liquid crystal responds again. A display of a greater number of grayscales than the number of output grayscales of a driver is achieved according to a combination of magnitude of voltages to be applied to the liquid crystal a plurality of times within each sub-frame.
REFERENCES:
patent: 4773716 (1988-09-01), Nakanowatari
patent: 6278426 (2001-08-01), Akiyama
patent: 6972777 (2005-12-01), Shigeta
patent: 11-119189 (1999-04-01), None
Yoshihara et al.; “A Full-color FLC Display Based on Field Sequential Color with TFTs”;AM-LCD '99 Digest of Technical Papers; pp. 185-188; Jul. 14-16, 1999.
Yoshihara et al.; “Invited Papers: A 254-ppi Full-color Video Rate TFT-LCD Based on Field Sequential Color and FLC Display”;SID '00 Digest of Technical Papers; pp. 1176-1177; May 2000.
Betsui Keiichi
Makino Tetsuya
Yoshihara Toshiaki
Fujitsu Limited
Greer Burns & Crain Ltd.
Hjerpe Richard
Shapiro Leonid
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