Surface light source
US11101403B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2020 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Mar 13, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/855
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A surface light source includes a light emitting unit and an optical plate. The optical plate has a light input surface and a light output surface. A side of the optical plate where the light input surface is located have grooves arranged thereon and spaced from one another. A quantum layer is arranged in each of the grooves and includes a colloid and multiple quantum dot nanostructures dispersed in the colloid. Each the quantum dot nanostructure includes an inner core, a ligand layer, a hydrophobic layer, an encapsulation layer and a barrier layer. The light emitting unit includes light sources respectively arranged in the grooves, and a light emitting surface of each the light source is close to the quantum layer so that at least a part of the light rays emitted from the light source is struck onto the quantum layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.