Spectrum-controllable reflective polarizers having electrically-switchable modes of operation
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United States of America Patent
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Nov 15, 2005
Issued Date -
N/A
app pub date -
Sep 5, 2003
filing date -
Nov 27, 1991
priority date (Note) -
Expired
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Abstract
A light controlling film is disclosed, comprising a polymerized polymer network varying spatially in a direction normal to the film surface, where the polymerized polymer network is a crosslinked high molecular weight polymeric material mixed with a low molecular weight nematic material exhibiting cholesteric liquid crystal (CLC) order, wherein an electric field impressed in the film controls the reflection bandwidth of circularly polarized light.
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