Device of white light-emitting diode
US6841804B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2003 |
| Grant date | Jan 11, 2005 |
| Priority date | — |
| Expiry date | Oct 27, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2224/49107
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A white LED device includes a member, a plurality of LEDs, fixed on the member, the LEDS further comprising blue GaN LEDs, a reflector, in parabolic shape, to encase thed member and the plurality of LEDs, yellow phosphor, coated on the surface of the reflector facing the LEDs, and a supporting component, for connecting the member and the reflector in order to connect the LEDs, the member and the reflector together. The main feature of the present invention includes that the LEDs emit blue light when positively biased. The blue light triggers yellow phosphor to generate a yellow light, and the blue light mixed with the yellow light to become a white light. The white light is reflected by the reflector to project onto target objects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.