Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2007-10-16
2007-10-16
Qi, Mike (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S123000, C349S125000, C349S130000
Reexamination Certificate
active
10977196
ABSTRACT:
To provide a liquid crystal device with a high contrast ratio without deteriorating the aperture ratios of the respective pixels by reducing inferior alignment in liquid crystal, which is caused by alignment films, a liquid crystal device includes an element substrate having active elements and pixel electrodes, a counter substrate arranged to face the element substrate and having counter electrodes that face the pixel electrodes, and a liquid crystal layer arranged between the element substrate and the counter substrate. On the internal surfaces of the element substrate and the counter substrate, the alignment films are made of column-shaped inorganic material structures inclined in a predetermined direction with respect to the surface of the substrates are provided. The liquid crystal is made of liquid crystal molecules having positive dielectric anisotropy. The pre-tilt angle θ1of the liquid crystal molecules on the alignment film of the element substrate is no less than 10° and no more than 45° and the pre-tilt angle θ2of the liquid crystal molecules on the alignment film of the counter substrate is no less than 0° and no more than 10°.
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Qi Mike
Seiko Epson Corporation
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