Methods of fabricating light emitting diodes that radiate white light
US7393705B1 · kind B1 · utility
12Cited by
15References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 16, 2006 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Sep 30, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8581
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for fabricating an LED that radiates white spectrum light. A phosphor that radiates a white spectrum after excitation in the blue or UV spectrum is uniformly deposited onto a GaN epitaxial wafer prior to die separation and packaging. This allows wafer-level processing and probing of white LEDs and produces true white LED chips.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.