Privacy displays
US12393066B2 · kind B2 · utility
0Cited by
110References
49Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2024 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Aug 1, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13471
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A switchable privacy display device comprises a spatial light modulator comprising an in-plane display polariser, an out-of-plane polariser and a polarisation switch arranged between the in-plane display polariser and the out-of-plane polariser. The display achieves high image visibility to an off-axis user in a wide-angle mode and high image security to an off-axis snooper in privacy mode of operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.