Light emitting device
US7872273B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2009 |
| Grant date | Jan 18, 2011 |
| Priority date | — |
| Expiry date | Mar 23, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/853
Abstract
A light emitting device includes a leadframe, a light emitting unit, a transparent encapsulant, and a fluorescent colloid layer. The light emitting unit is disposed on the leadframe. The transparent encapsulant covers the light emitting unit, wherein the transparent encapsulant has a concave on which at least one reflective surface is disposed. The fluorescent colloid layer is disposed outside the transparent encapsulant, wherein a chamber is formed between the fluorescent colloid layer and the transparent encapsulant. The light generated by the light emitting unit is reflected by the reflective surface and guided to a side wall of the fluorescent colloid layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.