Liquid crystal display device having particular alignment...

Details Liquid crystal display device having particular alignment... Liquid crystal display device having particular alignment...

2006-09-12

2006-09-12

Schechter, Andrew (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S113000, C349S114000

Reexamination Certificate

active

07106405

ABSTRACT:
To provide a transreflective liquid crystal display device that can produce a bright and high-contrast display with a wide viewing angle. A liquid crystal display device has a liquid crystal layer held between a pair of substrates and has a transmissive display region and a reflective display region in one dot region. The liquid crystal layer includes a liquid crystal being initially vertically aligned and having negative dielectric anisotropy. The pair of substrates have electrodes to drive the liquid crystal on sides facing the liquid crystal layer. The electrodes have openings and protrusions in the transmissive display region and the reflective display region, respectively. The opening areas of the openings and the in-plane occupying areas of the protrusions are larger in the reflective display region than in the transmissive display region.

REFERENCES:
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patent: 6476889 (2002-11-01), Urabe et al.
patent: 6753939 (2004-06-01), Jisaki et al.
patent: 6806929 (2004-10-01), Chen et al.
patent: 2002/0149728 (2002-10-01), Ogishima et al.
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patent: 2001-0062353 (2001-07-01), None
Jisaki et al., “Development of transflective LCD for high contrast and wide viewing angle by using homeotropic alignment,” Asia Display, IDW, pp. 133-136, 2001.

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