Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2006-06-20
2006-06-20
Hjerpe, Richard (Department: 2676)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S096000, C345S054000, C349S107000, C349S166000
Reexamination Certificate
active
07064735
ABSTRACT:
An electro-optical device is provided which includes a TFT array substrate having pixel electrodes, and an opposing substrate having an opposing electrode. The surface of a substrate beneath the pixel electrodes in the TFT array substrate or the surface of a substrate beneath the opposing electrode in the opposing substrate is raised in a plurality of projections in an area facing the spacing between adjacent pixel electrodes which are driven by mutually opposite polarity voltages in an alternating drive manner. Arranged on top of the projections are edge portions of the adjacent pixel electrodes. The substrate surface is planarized to be flat in an area thereof facing the spacing between adjacent pixel electrodes which are driven by the same polarity voltages in an alternating drive method. With this arrangement, the electro-optical device such as a liquid-crystal display device provides a high aperture ratio of a pixel and presents a high-contrast and bright image by reducing an orientation defect of a liquid crystal resulting from a step in the surface of the substrate facing the liquid crystal and an orientation defect of the liquid crystal resulting from a transverse electric field.
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Hjerpe Richard
Nguyen Hau
Oliff & Berridg,e PLC
Seiko Epson Corporation
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