Cholesteric liquid crystal optical bodies and methods of manufacture
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United States of America Patent
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Jun 3, 2003
Grant Date -
Aug 22, 2002
app pub date -
Feb 22, 2001
filing date -
Feb 22, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical body can be formed using cholesteric liquid crystal materials. At least two different coating compositions containing cholesteric liquid crystal material are coated on a substrate. At least a portion of each composition is allowed to interdiffuse to generate a change in pitch along a thickness dimension of the optical body. This optical body can be used, for example, as a reflective polarizer in an optical display.
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