Multi-domain liquid crystal display having concave virtual bump structures
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United States of America Patent
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-
Nov 4, 2003
Grant Date -
Jul 11, 2002
app pub date -
Jan 5, 2001
filing date -
Jan 5, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A liquid crystal display has at least one concave structure formed on one of pixel and electrode layers in each pixel area. Between the electrode layer having concave structures and a substrate is a passivation layer that is dented by the concave structures. The concave structures form multiple domains for each pixel. One of the electrode layers may be formed with bump structures or openings combining with fringe field effect to provide pre-tilting of liquid crystals to enhance the effect of multiple domains. Each concave structure in a pixel area can have a different top view, cross-sectional view or three-dimensional structure. The concave structure can be formed by existing manufacturing process. One mask rubbing process or photo-aligned method may be used to align liquid crystals for the display in cooperation with the concave structures.
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