Wavelength conversion member manufacturing method and method for manufacturing light-emitting device
US12059749B2 · kind B2 · utility
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3References
9Claims
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Key dates
| Filing date | Jun 30, 2021 |
| Grant date | Aug 13, 2024 |
| Priority date | — |
| Expiry date | Jan 22, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/30
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A wavelength conversion member manufacturing method includes: providing the wavelength conversion member having an upper surface, the wavelength conversion member including a phosphor portion, and a light-transmissive portion configured to transmit fluorescence from the phosphor portion; and forming, in the wavelength conversion member, at least one depressed portion each having an inclined surface inclined with respect to the upper surface by irradiating the wavelength conversion member with a pulsed laser beam from above more than once to form a plurality of continuous machining marks at different processing depths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.