Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 23, 2023
0Patent Application Number
178434600
Date Filed
June 17, 2022
0Patent Citations
...
Patent Citations Received
Patent Primary Examiner
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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