Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1996-10-23
1998-04-28
Nguyen, Chanh
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345211, G09G 336
Patent
active
057450927
ABSTRACT:
An object is to provide a power supply technique which is optimum when the source voltage range of a signal driver is different from that of a scan driver. A power supply unit supplies a source voltage group of V11, VC1 and V12 of the same polarity having a narrower source voltage range to the signal driver and another source voltage group of V10, VC2 and V15 of the same polarity having a wider source voltage range to the scan driver. The center voltages VC1 and VC2 within these source voltage ranges are equal to each other. The power supply unit has a means for adjusting the source voltages. A control signal and other signals from a control unit are transformed in level by a potential transforming unit. When it is desired to accomplish the display-off function, the outputs of the signal and scan drivers are set to be equal to VC level. Thus, the adjustment of liquid-crystal driving voltages can be accomplished by a simplified adjustment device while maintaining the accurate ratio of voltage division.
REFERENCES:
patent: 4523232 (1985-06-01), Kameda et al.
patent: 4556880 (1985-12-01), Hamada
patent: 4769639 (1988-09-01), Kawamura et al.
patent: 5066945 (1991-11-01), Kanno et al.
patent: 5323171 (1994-06-01), Yokouchi et al.
Nguyen Chanh
Seiko Epson Corporation
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