Light emitting module and planar light source having a light guide with cavity and flourescent material disposed on a surface of cavity and light guide
US11092731B2 · kind B2 · utility
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6References
11Claims
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Key dates
| Filing date | Jul 28, 2020 |
| Grant date | Aug 17, 2021 |
| Priority date | — |
| Expiry date | Jul 28, 2040 |
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.