Liquid crystal display device
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United States of America Patent
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-
Nov 11, 1980
Grant Date -
N/A
app pub date -
Jul 12, 1974
filing date -
Jul 18, 1973
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A liquid crystal device includes a liquid crystal cell capable of rotating plane polarized light, one or more layers of a birefringent material, and polarizers. Application of voltages to the liquid crystal cell changes the angular rotation of light passing through the device and hence changes the observed color. The actual color observed is dependent on the birefringent film, its thickness and its relative angular orientation to the polarized light.
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