Computer graphics processing and selective visual display system – Display driving control circuitry – Display power source
Reexamination Certificate
2007-07-17
2007-07-17
Lefkowitz, Sumati (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Display power source
C345S092000, C345S205000, C345S206000
Reexamination Certificate
active
10320269
ABSTRACT:
A display device with capacitive display pixels, in which a drive scheme is used for capacitive coupling of voltages to enable reduced column voltage swings to be obtained. Each pixel has two storage capacitors. The use of two storage capacitors provides some freedom in the choice of the magnitude of the voltage swing provide on one terminal of one of the storage capacitors. The first capacitor (C1) of all pixels of the display may be grounded, and only the second capacitor (C2) is subjected to changes in voltage to be capacitively coupled to the display cell. This provides a flexible capacitor line drive type scheme.
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Ayres John R. A.
Edwards Martin J.
Koninklijke Philips Electronics N. V.
Lefkowitz Sumati
Pham Tammy
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