Backlight source and manufacturing method thereof, and display device
US11391877B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2018 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | Sep 1, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0065
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight source is provided which includes a light guide plate 10 and a light-emitting unit 20. The light guide plate 10 includes a first surface and a second surface disposed oppositely. The light-emitting unit 20 is located on the side of the light guide plate where the first surface disposed. The grating layer 30 includes at least one grating unit configured to diffract light emitted by the light-emitting unit 20. The overall structure of the backlight source is no longer limited by the distance between the LEDs and the first layer diffusion layer, and therefore the thinning and lightening of the backlight source is realized. A manufacturing method of a backlight source and a display device are further provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.