Light emitting device package for temeperature detection
US8093788B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2009 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Nov 4, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/1461
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light emitting device package and a lighting system are provided. According to one embodiment, a functional substrate; at least one light emitting element bonded onto the functional substrate; and at least one design-in thermal detection unit built onto the functional substrate are provided, wherein the design-in thermal detection unit is proximate to the light emitting element, and wherein the design-in thermal detection unit is configured to detect the temperature and transmit a temperature signal. The design-in thermal detection unit may be an NTC thermistor based on a semiconductor substrate. A control system may be included to detect temperature and make any necessary current adjustments in order to maintain consistent performance of the light emitting element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.