Light emitting device including a metal substrate for high heat dissipation and increased light efficiency
US9728697B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Oct 1, 2014 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Oct 1, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/0365
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light emitting device achieving a high heat dissipation effect and a high light utilization efficiency includes an aluminum substrate, a high heat dissipation ceramic layer on the aluminum substrate, an etching frame on the high heat dissipation ceramic layer, and a highly reflective ceramic layer on the high heat dissipation ceramic layer and the etching frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.