Method for manufacturing wavelength conversion member and light emitting device
US11939667B2 · kind B2 · utility
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17Claims
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Assignee
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Key dates
| Filing date | Apr 14, 2021 |
| Grant date | Mar 26, 2024 |
| Priority date | — |
| Expiry date | Oct 9, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/856
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for manufacturing a wavelength conversion member, includes: providing a wavelength conversion layer having a phosphor-containing portion and a light reflecting portion surrounding the phosphor-containing portion, and the wavelength conversion layer having an upper surface, a bottom surface and at least one side surface; forming a light-blocking film on the upper surface of the wavelength conversion layer; and removing a part of the light-blocking film by laser processing to expose at least a part of the phosphor-containing portion from the light-blocking film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.