Displays with adjustable angles of view
US11822165B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2020 |
| Grant date | Nov 21, 2023 |
| Priority date | — |
| Expiry date | Sep 19, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1681
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display may have display layers that form an array of pixels. An angle-of-view adjustment layer may overlap the display layers. The angle-of-view adjustment layer may include an array of adjustable light blocking structures formed from electrochromic material. The electrochromic material may be interposed between first and second electrode layers. When it is desired to operate the display in a private viewing mode, control circuitry may apply a current to the first and second electrodes that causes the electrochromic material to become more opaque, thereby restricting the angle of view of the display. When it is desired to operate the display in a public viewing mode, control circuitry may apply a current to the first and second electrodes that causes the electrochromic material to become more transparent, thereby opening up the angle of view of the display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.