Inorganic fluorescent material used for solid-state light source
US7135129B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2003 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Jun 27, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An inorganic fluorescent material for solid-state light source is associated with a GaInN heterojunction blue solid-state light source to form a white light source. The fluorescent material is represented by the general formula of (Y1-x-y-z-q,Gdx,Dyy,Ybz,Erq,Cep)α(Al1-n-m-k,Gan,Sck,Inl)βO12, wherein α is in the range of 2.97–3.02, β is in the range of 4.98–5.02, x is in the range of 0.2–0.65, y is in the range of 0.001–0.05, z is in the range of 0.01–0.05, q is in the range of 0.001–0.05, p is in the range of 0.015–0.1, k is in the range of 0.01–0.6, n is in the range of 0.01–0.45, and l is in the range of 0.01–0.1. The short-wavelength light emitted from the GaInN heterojunction blue solid-state light source is mixed with a wide-bandwidth light emitted from the fluorescent material to generate a mixed light of a wavelength of about 535 nm–590 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.