Light emitting module and planar light source having a light guide with cavity and fluorescent material disposed on a surface of cavity and light guide
US10739507B2 · kind B2 · utility
0Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 2019 |
| Grant date | Aug 11, 2020 |
| Priority date | — |
| Expiry date | May 31, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/882
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light emitting module and a planar light source reduced in thickness are provided. A light emitting module includes: a light guide plate including a first main surface serving as a light emitting surface, a second main surface provided on a side opposite to the first main surface, and a recess provided at the second main surface; a first fluorescent material layer provided in the recess; a light emitting element provided at the first fluorescent material layer on the second main surface side; and a second fluorescent material layer provided at the second main surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.