Array type light-emitting device with high color rendering index
US7772603B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2007 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Feb 2, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An array type light-emitting device with high color rendering index includes: a substrate, an array type light-emitting module, a plurality of wavelength-converting layers, and a plurality of transparent layers. The array type light-emitting module is composed of a plurality of light-emitting chip rows, and each light-emitting chip row has a plurality of first light-emitting chips and at least one second light-emitting chip. The wavelength-converting layers are respectively covered on the first light-emitting chips. Therefore, a part of visible light emitted by the first light-emitting chips is absorbed and converted into visible light with another emission peak wavelength range via the wavelength-converting layers, and the visible light with another emission peak wavelength range mixes with projecting light projected from the second light-emitting chips to make the array type light-emitting device generate mixed white light with a color rendering index of between 90 and 95.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.