Micro-coextruded film modified with piezoelectric layers
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United States of America Patent
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Oct 13, 2009
Grant Date -
Nov 30, 2006
app pub date -
Apr 27, 2006
filing date -
May 26, 2005
priority date (Note) -
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Abstract
Disclosed are layered films having a combination of piezoelectric layers that change dimension with applied voltage and non-piezoelectric layers. The layered structures can form a wide range of electrically switchable optical films. These films have applications in displays, polarizers, optical compensators, aesthetic films, and “hot” and “cold” mirrors that selectively reflect only certain wavelengths. Also disclosed are monochromatic and multicolor displays using these films.
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