Displays with adjustable privacy levels
US10649248B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2017 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Jan 7, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13725
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display may have display layers such as liquid crystal display layers having a liquid crystal layer interposed between a color filter layer and a thin-film transistor layer or organic light-emitting diode layers having organic light-emitting diodes formed from thin-film transistor circuitry. The display layers may be configured to form an array of pixels that display images and may include a polarizer. An angle-of-view adjustment layer may overlap the display layers. The angle-of-view adjustment layer may include one or more liquid crystal layers. A first polarizer may be interposed between first and second liquid crystal layers and the second liquid crystal layer may be overlapped by a second polarizer. The first and second polarizers may have pass axes that are aligned with a pass axis of the polarizer in the display layers. One or more liquid crystal layers in the angle-of-view adjustment layer may include dichroic dye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.