Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yih-Ming Kang0
Craig Lin0
HongMei Zang0
Hui Du0
Pubudu Thilanka Galwaduge0
Xiaolong Zheng0
Date of Patent
April 26, 2022
0Patent Application Number
165363830
Date Filed
August 9, 2019
0Patent Citations
Patent Primary Examiner
A light-collimating film including elongated chambers of bistable electrophoretic fluids. The light-collimating films are suitable to control the amount and/or direction of light incident to a transmissive substrate. Such films may be integrated into devices, such as LCD displays, to provide a zone of privacy for a user viewing the LCD display. Because the light-collimating film is switchable, it allows a user to alter the collimation of the emitted light on demand. Because the films are bistable, they do not require additional power after they have been switched to a display state.
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