High efficiency, color coding light pipe methods for display applications, utilizing chiral liquid crystal materials
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United States of America Patent
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Mar 20, 2001
Grant Date -
N/A
app pub date -
Aug 20, 1998
filing date -
Apr 16, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention teaches methods whereby the lighting efficiency of many lighted displays, including liquid Crystal Displays (LCDs) are increased by an order of magnitude through the use of chiral nematic liquid crystal materials incorporated into the light pipes of the displays. The light pipe technology also enables a practical embodiment of the stereoscopic display of Venolia. These methods are also applied to the fabrication of lighted signs for advertising and status indicators in hostile environments. The technology of the light pipes is also applied to the creation of a novel art medium.
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