White light devices using non-polar or semipolar gallium containing materials and phosphors
US8956894B2 · kind B2 · utility
1Cited by
127References
45Claims
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Key dates
| Filing date | Sep 24, 2013 |
| Grant date | Feb 17, 2015 |
| Priority date | — |
| Expiry date | Sep 24, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/855
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 light emitting diodes 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.