Phosphor-coated light extraction structures for phosphor-converted light emitting devices
US10038123B2 · kind B2 · utility
2Cited by
5References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 6, 2015 |
| Grant date | Jul 31, 2018 |
| Priority date | — |
| Expiry date | Sep 1, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/0363
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A conformal thin-film phosphor layer is disposed over a surface of a hemispherical lens, a Fresnel lens, or a microlens array, thereby forming a phosphor-coated light extraction structure. Also disclosed is a phosphor-converted photonic crystal light emitting device that incorporates a thin-film phosphor layer. A wafer-level packaging process incorporating a thin-film phosphor layer is also disclosed herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.