Single phosphor layer photonic device for generating white light or color lights
US9029175B2 · kind B2 · utility
7Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2013 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | Nov 20, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8516
Abstract
A photonic device generates light from a full spectrum of lights including white light. The device includes two or more LEDs grown on a substrate, each generating light of a different wavelength and separately controlled. A light-emitting structure is formed on the substrate and apportioned into the two or more LEDs by etching to separate the light-emitting structure into different portions. At least one of the LEDs is coated with a phosphor material so that different wavelengths of light are generated by the LEDs while the same wavelength of light is emitted from the light-emitting structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.