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US Patent 11656526 Switchable light-collimating layer including bistable electrophoretic fluid

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Patent
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Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
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Patent Number
116565260
Date of Patent
May 23, 2023
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Patent Application Number
178434600
Date Filed
June 17, 2022
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Patent Citations
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US Patent 9612502 Electro-optic display with edge seal
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US Patent 11016599 Light distribution controllable touch panel device and display device
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US Patent 11048036 Multiview displays having a reflective support structure
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US Patent 11131882 Light source control assembly, display device and method for manufacturing light source control assembly
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US Patent 11187957 Light distribution control element, and display device and illumination device including the same
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US Patent 7112114 Electrophoretic display and process for its manufacture
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US Patent 7116318 Backplanes for display applications, and components for use therein
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US Patent 7156945 Process for forming a patterned thin film structure for in-mold decoration
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...
Patent Citations Received
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US Patent 12111533 Light route control member and display device having the same
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Patent Primary Examiner
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Thanh Nhan P Nguyen
0

A switchable light-collimating film can be used as a privacy filter for computer monitors or other display devices. The film comprises a plurality of elongated chambers having pigment particles, the position of which can be controlled by the applied electric field. Distribution of the pigment particles throughout the elongated chambers, as opposed to their concentration on one side of the chambers, narrows the viewing angle to the light passing through the film and provides privacy of the viewing images to the user.

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