Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2006-01-17
2008-12-09
Caley, Michael H (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S113000, C349S114000
Reexamination Certificate
active
07463327
ABSTRACT:
The invention relates to a reflective or transflective liquid crystal display having alignment regulating structures and provides a liquid crystal display capable of achieving high display quality on which no display irregularity attributable to an irregularity of the cell thickness is visually perceived. A liquid crystal display includes first and second substrates, a liquid crystal layer sealed between the substrates, a pixel region formed on the first substrate and including a reflective area having a reflective plate for reflecting light impinging thereon from the side of the second substrate, a TFT formed on the first substrate and having source and drain electrodes formed from the same material as the reflective plate, a protective film formed on the TFT, a columnar spacer formed in a region where a gate bus line, a drain bus line, and the protective film are provided one over another, the columnar spacer contacting both of the substrates to maintain a cell gap, and a protrusive structure formed in the reflective area on the second substrate from the same material as the columnar spacer for regulating the alignment of liquid crystal molecules.
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patent: 2001/0026347 (2001-10-01), Sawasaki et al.
patent: 2004/0189928 (2004-09-01), Yang et al.
patent: 2005/0237459 (2005-10-01), Ikeda et al.
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Tasaka Yasutoshi
Yoshida Hidefumi
Caley Michael H
Nixon & Vanderhye P.C.
Sharp Kabushiki Kaisha
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