Multiview backlight, mode-switchable backlight, and 2D/3D mode-switchable display
US11169391B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2019 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Jan 31, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/068
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multiview backlight and mode-switchable backlight employ a planar backlight to emit scattered light and light-blocking layer having a plurality of apertures to provide a plurality of directional light beams from the scattered light. The mode-switchable backlight further includes another planar backlight configured to provide diffuse light in a two-dimensional (2D) operational mode, the plurality of directional light beams being provided in a three-dimensional (3D) mode. A 2D/3D mode-switchable display includes the mode-switchable backlight and a light valve array. A method of backlight operation includes directing scattered light from a planar backlight toward a light-blocking layer having a plurality of apertures and providing a plurality of directional light beams using an aperture of the aperture plurality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.