Transflective LCD with tilting direction of the LC molecules...

Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only

Reexamination Certificate

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Details

C349S129000, C349S191000

Reexamination Certificate

active

07046322

ABSTRACT:
The invention provides a transflective liquid crystal display device that has less defects, such as incidental images both in reflective display and transmissive display modes, and that has high luminance and high contrast. The liquid crystal display device according to the invention can include a liquid crystal layer sandwiched between a pair of substrates. Each dot area of the display device has a reflective display area and at least two transmissive display areas. The liquid crystal layer can include liquid crystal with negative dielectric anisotropy. The initial alignment state of molecules of the liquid crystal is vertical. An adjusting layer is provided between the liquid crystal layer and one substrate of the pair of substrates. The adjusting layer makes the thickness of the liquid crystal layer different in the reflective display area and the transmissive display area and is provided in the reflective display area. The tilting direction of the liquid crystal molecules is opposite to each other in two adjacent transmissive display areas and the liquid crystal molecules in the reflective display area are in parallel.

REFERENCES:
patent: 6710837 (2004-03-01), Song et al.
patent: 2002/0149728 (2002-10-01), Ogishima et al.
patent: A 11-242225 (1999-09-01), None
patent: A 2001-042332 (2001-02-01), None
patent: A 2002-055343 (2002-02-01), None
patent: A 2002-287158 (2002-10-01), None
patent: A 2002-350853 (2002-12-01), None
patent: A 2003-167253 (2003-06-01), None
patent: A 1999-0085360 (1999-12-01), None
Jisaki et al., “Development of transflective LCD for high contrast and wide viewing angle by using homeotropic alignment,” Asia Display, IDW, 2001.

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