Layered phosphor coatings for LED devices
US6917057B2 · kind B2 · utility
107Cited by
10References
26Claims
0Family size
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Key dates
| Filing date | Dec 31, 2002 |
| Grant date | Jul 12, 2005 |
| Priority date | — |
| Expiry date | Dec 31, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/853
Abstract
A light emitting device comprised of a light emitting diode on a mounting surface, the light emitting diode includes a substrate layer and at least one active region. A resilient substantially transparent and substantially phosphor free polymer layer extends from the mounting surface to above at least one quarter of a height of the substrate layer but below a top surface of the light emitting diode. A second phosphor containing layer extends from the phosphor free polymer layer to above the top surface of the light emitting diode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.