Method of manufacturing light-emitting device including phosphor pieces
US11211521B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 10, 2020 |
| Grant date | Dec 28, 2021 |
| Priority date | — |
| Expiry date | Jun 10, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/0361
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A method of manufacturing a light-emitting device 1 includes a step of providing first phosphor sheets 11, a step of providing second phosphor sheets 12, a step of providing a light-emitting element 13, a selection step of selecting a combination of one of the first phosphor sheets 11 and one of the second phosphor sheets 12 on the basis of a wavelength conversion characteristic of each of the first phosphor sheets 11 and a wavelength conversion characteristic of each of the second phosphor sheets 12, a step of obtaining a plurality of first phosphor pieces 11c and a plurality of second phosphor pieces 12c from the selected first phosphor sheet 11 and the selected second phosphor sheet 12, and a step of disposing one of the first phosphor pieces 11c and one of the second phosphor pieces 12c on or above the light-emitting element 13.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.