Color mixing light emitting diode
US7064354B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 7, 2003 |
| Grant date | Jun 20, 2006 |
| Priority date | — |
| Expiry date | May 14, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/3011
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A color mixing light emitting diode (LED) is disclosed. The present invention is featured in that a plurality of LEDs emitting different colors of light can be electrically connected in series and/or in parallel by using chip manufacturing to generate other colors of light. For example, the first LED chip set can emit such as yellow light (or changing to reddish-red light), and the second LED chip can emit such as blue light (or changing to bluish-green light), thereby making the present invention to emit white light. Moreover, the first LED chip set can be a photoluminescence LED chip, wherein the first LED chip can be excited by the light emitted by the second LED chip to emit light, and then the light emitted by the second LED chip and the light emitted by the first LED chip can be mixed into other colors of light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.