Peep-proof apparatus for switching a viewing angle of display panel, display apparatus, method of operating display apparatus, and method of fabricating peep-proof apparatus
US11086150B2 · kind B2 · utility
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Key dates
| Filing date | Jul 6, 2017 |
| Grant date | Aug 10, 2021 |
| Priority date | — |
| Expiry date | Apr 9, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2358/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present application discloses a peep-proof apparatus for switching a viewing angle of a display panel between a first viewing angle and a second viewing angle. The peep-proof apparatus includes a base substrate; a first liquid crystal layer on the base substrate; a second liquid crystal layer on a side of the first liquid crystal layer distal to the base substrate; a first controller configured to control the first liquid crystal layer to switch between being light transmissive and being light blocking in a plurality of first regions spaced apart from each other while other regions in the first liquid crystal layer being light transmissive; and a second controller configured to control the second liquid crystal layer to switch between being light transmissive and being light blocking in a plurality of second regions spaced apart from each other while other regions in the second liquid crystal layer being light transmissive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.