White light devices using non-polar or semipolar gallium containing materials and phosphors
USRE47711E1 · kind E1 · reissue
1Cited by
125References
93Claims
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Key dates
| Filing date | Oct 14, 2015 |
| Grant date | Nov 5, 2019 |
| Priority date | — |
| Expiry date | Oct 14, 2035 |
Classification
- Technology area (CPC —)General
Abstract
A packaged optical device includes a substrate having a surface region with light emitting diode devices fabricated on a semipolar or nonpolar GaN substrate. The LEDs emit polarized light and are characterized by an overlapped electron wave function and a hole wave function. Phosphors within the package are excited by the polarized light and, in response, emit electromagnetic radiation of a second wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.