Light emitting module and thermal protection method
US8743921B2 · kind B2 · utility
1Cited by
2References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 10, 2008 |
| Grant date | Jun 3, 2014 |
| Priority date | — |
| Expiry date | Apr 12, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2224/73265
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
Proposed is a light emitting module (1), comprising a semiconductor light emitting device (10) and a thermal switch (20). The thermal switch (20) is arranged to protect the device (10) from over heating. At elevated temperatures the junction of the device (10) may reach a critical level causing catastrophic breakdown of the device. According to the invention, the thermal switch is arranged to shunt the semiconductor light emitting device. This is especially advantageous as the thermal protection offered by the switch (20) correlates directly to the (junction) temperature of the device (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.