Multi-view pixel directional backlight module and naked-eye 3D display device
US10429567B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 30, 2015 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Jun 21, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/1809
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multi-view pixel directional backlight module and a naked-eye 3D display device are provided. The multi-view pixel directional backlight module includes at least two rectangular light guide plates closely stacked together. A light-emerging surface of the rectangular light guide plate is provided with multiple pixel arrays. Light emitted by pixels in a same pixel array is pointed to a same viewing angle, and different pixel arrays have different viewing angles. At least one side of each rectangular light guide plate is provided with a light source group. Light emitted by the light source group enters the corresponding light guide plate, then emerges from pixels of respective pixel arrays on the light-emerging surface of the light guide plate, and is totally reflected at positions other than positions of the pixels within the light guide plate. Each of the pixels is a nano-diffraction grating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.