Stacked LCD graphics display
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United States of America Patent
Stats
-
Oct 15, 1985
Issued Date -
N/A
app pub date -
Jan 22, 1982
filing date -
Jul 25, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A visual display and method for producing the same. A plurality of electro-optic cells, such as liquid crystal cells, are placed in an optical series. Each of the cells receives approximately simultaneous identical signals. Due to the series relationship, the resulting contrast ratio will be significantly improved. The transmission function acting on the entering light will be squared after the second electro-optic cell, cubed after the third cell, etc. The enhanced transmission function has a vastly improved rise after the threshold voltage, i.e. greater nonlinearity allowing for greater multiplexing capability. Plastic LCDs are preferably used, and their very small thickness avoids parallax effects.
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