Computer graphics processing and selective visual display system – Display driving control circuitry – Display power source
Reexamination Certificate
2006-04-25
2006-04-25
Awad, Amr A. (Department: 2677)
Computer graphics processing and selective visual display system
Display driving control circuitry
Display power source
C345S214000, C345S212000
Reexamination Certificate
active
07034816
ABSTRACT:
The present invention provides a system and method for driving a display device where out of a display screen, only pixels at intersections of particular scanning lines and particular data lines are used as a display area. In order to save power, the particular scanning lines are selected one for each horizontal scanning period. For one of the two split halves of the one horizontal scanning period, the selected scanning line is supplied with a selection voltage, and the polarity of the selection voltage is inverted at least every two or more horizontal scanning periods. The scanning lines other than the particular scanning lines are supplied with a non-selection voltage, which is inverted at least every one vertical scanning period. For a duration of time during which the particular scanning lines are selected, the data lines other than the particular data lines are supplied with a non-lighting voltage in accordance with the polarity of the selection voltage applied to the selected scanning line, and the polarity of the non-lighting voltage is inverted every two or more horizontal scanning periods responsive to the period of the polarity inversion of the selection voltage.
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Oliff & Berridg,e PLC
Seiko Epson Corporation
Shapiro Leonid
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