Light emitting diode apparatus and method for enhancing luminous efficiency thereof
US8421104B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2010 |
| Grant date | Apr 16, 2013 |
| Priority date | — |
| Expiry date | Jan 18, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/853
Abstract
A light emitting diode apparatus with enhanced luminous efficiency is disclosed in the present invention. The light emitting diode apparatus includes a light emitting diode chip for providing a first light beam; a substrate, having a cross-section of a trapezoid, for supporting the light emitting diode chip, which is transparent to the first light beam; and an encapsulating body, containing a phosphor and encapsulating the light emitting diode chip and the substrate, for fixing the light emitting diode chip and the substrate and providing a second light beam when the phosphor is excited by the first light beam. Due to the shape of the substrate, contact area of the substrate with the phosphor is enlarged. Luminous efficiency is enhanced as well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.