Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Patent
1997-04-30
1998-11-03
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
349144, G02F 11337, G02F 11343
Patent
active
058317066
ABSTRACT:
A liquid crystal display (LCD) panel includes a substrate and an alignment layer, e.g., a polyimide polymer layer on the substrate. The alignment layer has a plurality of pixel areas defined thereon, a respective one which includes at least four domains, a respective one of which has a pretilt angle associated therewith and grooves formed therein along a groove direction such that a respective domain of a respective pixel area has a unique combination of pretilt angle and groove direction with respect to other domains of the pixel area. A respective domain of a respective one of the pixel areas may have one of a first pretilt angle or a second pretilt angle associated therewith, and may have grooves formed therein along one of a first direction or a second direction, the first and second directions being perpendicular. An LCD includes first and second panels having alignment layers arranged in an opposed relationship, with a liquid crystal material disposed therebetween. The first and second panels may be arranged such that a first pixel area of the first panel opposes a second pixel area of the LCD second panel, with a domain of the first pixel area opposing a domain of the second pixel area. The opposed domains may have the first and second pretilt angles associated therewith, respectively, and grooves formed therein along the first and second directions, respectively. The opposed first and second pixel areas produce a set of at least four different viewing directions. Related fabrication methods are also discussed.
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Nguyen Tiep H.
Samsung Electronics Co,. Ltd.
Sikes William L.
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