Planar light source and method of manufacturing planar light source
US11480725B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 3, 2021 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Jun 3, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133614
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A planar light source includes: a light guide plate including: a first principal face, a second principal face located opposite the first principal face, and a plurality of through holes that are open at the first principal face and the second principal face; a plurality of light sources, wherein at least one of the light sources is located in the through holes of the light guide plate; a wiring substrate on which the plurality of light sources are located; a first light transmissive member located in a first of the through holes so as to cover at least a portion of a lateral face of the at least one light source located in the first through hole; and a second light transmissive member located in the first through hole so as to cover at least an upper face of the first light transmissive member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.