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US 11,307,477 B2Granted
Anti-peep screen with dynamically adjustable optical screen
AssigneeInternational Business Machines Corporation
InventorsYin Xia, Ting Yin, Dong Chen, Ting Ting Bj Zhan, Xiang Juan Meng
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Abstract
An anti-peep screen is provided. The anti-peep screen includes a casing, a plurality of microspheres within the casing, wherein each of the microspheres includes a colorless transparent fluid fill and a plurality of charged particles, and a base electrode within the casing adjacent to the plurality of microspheres.
Claims20
An anti-peep screen, comprising:
- a casing;
- two or more stacked monolayers of microspheres within the casing, wherein each of the microspheres includes a colorless transparent fluid fill and a plurality of charged colored particles;
- and
- a base electrode within the casing adjacent to the plurality of microspheres, wherein the base electrode is configured to cause the plurality of charged colored particles to migrate to a region in the microspheres such that a range of angles at which a view through the stacked monolayers is at least partially obscured is increased due to an overlapping of opaque screens on different monolayers.
1 more element
A method of controlling a viewing angle of an anti-peep screen, comprising:
- applying a first voltage to a base electrode and a second voltage to an upright electrode that creates an electric field across two or more stacked monolayers of microspheres, wherein a plurality of charged particles within the microspheres migrate under the force of the electric field to a position within the microspheres to form an opaque screen that interferes with the viewing of an image on an opposite side of the anti-peep screen from a viewer.
A device with an anti-peep screen, comprising:
- a device display;
- the anti-peep screen on the device display, wherein the anti-peep screen includes two or more stacked monolayers of microspheres, the microspheres including a colorless transparent fluid fill and a plurality of charged colored particles;
- electronic components electrically coupled to the device display and to the anti-peep screen;
- and
- a power supply electrically coupled to the electronic components, wherein the anti-peep screen, electronic components, and power supply are electrically coupled and configured to cause the plurality of charged particles to migrate to a region in the microspheres to interfere with the viewing of an image on the display device through the anti-peep screen outside a predetermined viewing angle.
2 more elements
Dependencies are inferred from the claim text.