Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2005-09-28
2009-06-02
Qi, Mike (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S129000, C349S130000
Reexamination Certificate
active
07542120
ABSTRACT:
A liquid crystal display device comprises a TFT substrate, a CF substrate, a liquid crystal with negative dielectric anisotropy filled between the substrates, a pixel electrode provided on the TFT substrate, and an auxiliary electrode formed around the pixel electrode. A slit for segmenting a pixel region into a plurality of sub-pixel regions is formed in the pixel electrode from the center portion of each pixel toward the periphery portion thereof. The auxiliary electrode has a transparent step film formed at a position corresponding to the slit of the pixel electrode in such a way as to overlie the auxiliary electrode. Molecules of the liquid crystal of each sub-pixel region are aligned toward center of the sub-pixel region from the circumference of the sub-pixel region by a horizontal electric filed applied between the pixel electrode and auxiliary electrode, and the shape of the end portion of the transparent step film.
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Related U.S. Appl. No. 11/214,510, filed Aug. 30, 2005 in the name of Ryota Mizusako; entitled “Vertical Alignment Active Matrix Liquid Crystal Dispaly Device”.
Mizusako Ryota
Morita Hidehiro
Casio Computer Co. Ltd.
Frishauf Holtz Goodman & Chick P.C.
Qi Mike
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