Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2006-10-17
2006-10-17
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S055000, C345S204000, C345S208000, C345S209000, C345S212000
Reexamination Certificate
active
07123225
ABSTRACT:
A method of driving an active matrix liquid crystal display (AM-LCD) is provided. The AM-LCD has a plurality of unit pixels arranged in array form, and each the unit pixel has a pixel electrode, an opposite common electrode, and a liquid crystal layer disposed therebetween. The method comprises the following steps. First, an alternating voltage signal V(n) with a selected gray level n is applied to the pixel electrode. A first compensated voltage signal V′(n) is applied to the pixel electrode simultaneously to compensate the alternating voltage signal V(n) for the potential level shift induced by the parasitic capacitance and the coupling capacitance of the unit pixel. A second compensated voltage signal Vasy(n) is applied to the pixel electrode simultaneously to compensate the alternating voltage signal V(n) for the potential level shift induced by the different material or the asymmetric appearance of the pixel electrode and the common electrode.
REFERENCES:
patent: 2002/0140691 (2002-10-01), Sato et al.
AU Optronics Corp.
Hjerpe Richard
Shapiro Leonid
Troxell Law Office PLLC
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