ELECTROSTATICALLY CONTROLLABLE DEVICE
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United States of America Patent
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Issued Date -
Nov 20, 2014
app pub date -
Dec 20, 2012
filing date -
Jan 3, 2012
priority date (Note) -
Abandoned
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Abstract
An electrostatically controllable optical device is provided, comprising:—a transmissive substrate (101);—a transmissive electrode (102) arranged on a surface of said substrate;—a transmissive dielectric layer (103) arranged on said electrode; and—a flexible roll-up blind (104) attached to said dielectric layer, said flexible roll-up blind comprising a flexible electrode (106) and a flexible optically functional layer (105) provided on said flexible electrode, said flexible roll-up blind having naturally a rolled configuration and being capable of unrolling in a roll-out direction in response to an electrostatic force. At least one of said transmissive electrode, said transmissive dielectric layer, said flexible electrode and said flexible optically functional layer is adapted with respect to its shape, size, and/or position relative to another one of said transmissive electrode, said transmissive dielectric layer, said flexible electrode and said flexible optically functional layer, to allow partial unrolling but prevent complete unrolling of said flexible roll-up blind. The electrostatically controllable optical device provides improved switching reliability, and is relatively simple to manufacture.
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