Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2007-07-24
2010-10-05
Caley, Michael H (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S141000, C349S144000
Reexamination Certificate
active
07808589
ABSTRACT:
In a transflective liquid crystal display device, assuming that a narrower angle among angles formed by the initial liquid crystal alignment direction of a liquid crystal layer, and the projection direction of a pixel electrode of a transmissive unit is θt and that a narrower angle among angles formed by the initial liquid crystal alignment direction of the liquid crystal layer, and the projection direction of a pixel electrode of a reflective unit is θr, (1) when the liquid crystal layer possesses a positive-type liquid crystal, the relation of θt>θr is satisfied, and (2) when the liquid crystal layer possesses a negative-type liquid crystal, the relation of θr>θt is satisfied. The relations are satisfied by slanting or bending at least one of the pixel electrodes, and the reflectivity is improved.
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Igeta Koichi
Imayama Hirotaka
Nagata Tetsuya
Tanno Junji
Caley Michael H
Hitachi Displays Ltd.
Marquez, Esq Juan Carlos A.
Stites & Harbison PLLC
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