Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2008-02-14
2009-10-27
Nguyen, Jimmy H (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S098000, C345S102000
Reexamination Certificate
active
07609245
ABSTRACT:
A liquid crystal device that operates in a first operation mode and a second operation mode. The liquid crystal device includes a plurality of scanning lines, a plurality of data lines, a plurality of pixel circuits, a scanning line driving device, and a data line driving device. The plurality of pixel circuits are provided at positions corresponding to intersections of the scanning line and the data lines. Each of the plurality of pixel circuits includes a liquid crystal element that has a first electrode, a second electrode, and a liquid crystal held between the first electrode and the second electrode. A first alignment, which is an initial state, and a second alignment for display are provided for the liquid crystal as an alignment state. The scanning line driving device selects the plurality of scanning lines in a predetermined order. The data line driving device supplies each of the pixel circuits corresponding to the selected one of scanning lines with a writing voltage through the corresponding data line. In the first operation mode, in one frame that includes a first period and a second period, the data line driving device outputs a gray-scale voltage corresponding to a gray-scale to be displayed as the writing voltage in the first period and outputs a first voltage, which is used for maintaining the second alignment, as the writing voltage to the data line in the second period. In the second operation mode, the data line driving device outputs a second voltage, which is used for maintaining the second alignment, as the writing voltage in all the period of the one frame. The second voltage is higher than the first voltage.
REFERENCES:
patent: 2006/0221031 (2006-10-01), Chang et al.
patent: 2006/0238525 (2006-10-01), Hong et al.
patent: 2007/0229432 (2007-10-01), Kimura
patent: A 2003-202549 (2003-07-01), None
patent: A 2003-279931 (2003-10-01), None
Nguyen Jimmy H
Oliff & Berridg,e PLC
Seiko Epson Corporation
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