Chip-on-board type photoelectric device
US12191426B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2022 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Apr 13, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H29/142
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A COB type photoelectric device is provided. The COB type photoelectric device includes: a metallic substrate including a photoelectric element fixing area; a dam disposed on the metallic substrate and surrounding the photoelectric element fixing area; first photoelectric elements disposed on the metallic substrate and in the photoelectric element fixing area; a KSF phosphor based layer disposed on the first photoelectric elements and being not in contact with the metallic substrate; and an isolation layer disposed in the dam and covering the KSF phosphor based layer. The KSF phosphor based layer includes a KSF phosphor. The COB type photoelectric device can make full use of high luminous efficiency performance of the KSF, and improve luminous efficiency of the COB type photoelectric device while maintaining stability of the KSF.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.