Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1996-03-26
1999-07-06
Wu, Xiao
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 94, G09G 336
Patent
active
059203013
ABSTRACT:
In a TFT liquid crystal display device using a DHF liquid crystal, the DHF liquid crystal is alignable to a first alignment state in which liquid crystal molecules are substantially aligned to a first direction, to a second alignment state in which the liquid crystal molecules are substantially aligned to a second direction and to an arbitrary intermediate alignment state between the first and second alignment states, in accordance with a voltage applied between the pixel electrodes and the opposing electrode. One of a pair of polarization plates has an optical axis set in substantially an intermediate direction between the first and second directions. The optical axis of the other polarization plate is set perpendicular to the optical axis of the former polarization plate. A plurality of pulses having voltages corresponding to a display gradation and whose polarities change frame by frame are applied to the DHF liquid crystal for each pixel in the selection period of that pixel. A single pulse is applied to a pixel in a single frame.
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Ogura Jun
Sakamoto Katsuhito
Tanaka Tomio
Casio Computer Co. Ltd.
Wu Xiao
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