Light guide element and backlight module
US12276824B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2024 |
| Grant date | Apr 15, 2025 |
| Priority date | — |
| Expiry date | May 12, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0058
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light guide element includes first and second surfaces, a light-incident surface, and microstructure groups arranged on the first surface. Each microstructure group includes a first microstructure and a second microstructure separated from and being mirror image structures of each other. A first intersection line is provided between a first light-receiving surface of the first microstructure and the first surface. A first distance is provided between the first intersection line and a light-incident intersection line in a first direction. A second intersection line is provided between a second light-receiving surface of the second microstructure and the first surface. A second distance is provided between the second intersection line and the light-incident intersection line in the first direction. A variation trend of the first distance in a second direction is opposite to a variation trend of the second distance in the second direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.