Peep-proof device, display device and method for driving the display device
US11237416B2 · kind B2 · utility
0Cited by
2References
17Claims
0Family size
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Key dates
| Filing date | Jan 29, 2018 |
| Grant date | Feb 1, 2022 |
| Priority date | — |
| Expiry date | Oct 26, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/03
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A peep-proof device, a display device and a method for driving the display device are provided. The peep-proof device includes at least one light beam adjustment layer. The light beam adjustment layer includes: a transparent base layer and a plurality of grooves formed in a surface of the transparent base layer; and a liquid crystal layer arranged within the plurality of grooves. A refractive index of the transparent base layer is same as a refractive index of the liquid crystal layer to ordinary light beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.