Method of homeotropic alignment or tilted homeotropic alignment of liquid crystals by single oblique evaporation of oxides and liquid crystal display device formed thereby
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United States of America Patent
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Jul 30, 2002
Grant Date -
N/A
app pub date -
Jun 1, 1999
filing date -
Jun 1, 1999
priority date (Note) -
Expired
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Abstract
A single-domain, two-domain or four-domain homeotropic- or tilted homeotropic-alignment liquid crystal display device of either the transmissive-type or reflective-type having a high contrast ratio, a good display quality, and a high photo-stability (and a method of producing the same), includes a homeotropic- or tilted homeotropic-alignment layer which includes an oxide layer prepared by a single oblique evaporation of an activated oxide source. The angle between the evaporation direction and the substrate plane forms an angle from about .+-.20.degree. to about .+-.90.degree., and the thickness of the oxide layer is from about 10 nm to about 200 nm. A method of homeotropic-alignment or tilted homeotropic-alignment of liquid crystals by a single oblique evaporation process is also provided.
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