LCD comprising a light separating element including a cholesteric liquid crystal sheet
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United States of America Patent
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Jan 27, 1998
Grant Date -
N/A
app pub date -
Sep 14, 1995
filing date -
Sep 16, 1994
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A display device having an emitter, a direct-view display screen, a light-guiding member for guiding illumination light emitted from the emitter to the direct-view display screen, a light separating element for separating the illumination light selectively into a first and second polarized light component and transmitting the first light component and reflecting the second light component, a light converting member for converting the reflected second light component to a first light component, a reflecting plate for returning the converted first light component to the light separating element, and a half-wave film for rotating the vibration direction of the first polarized light component, thereby obtaining the illumination light.
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