Light diffusion type light emitting diode
US8035122B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2006 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Oct 18, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/882
Abstract
The present invention relates to light diffusion type light emitting diodes, more particularly, to a light emitting device having a large divergence angle by widely spreading an emitted light from a single color to a white color and a method thereof. The light emitting diode including the encapsulating layer according to the present invention is characterized by including at least two materials with different characteristics. According to the present invention, an encapsulating material for light emitting diode is mixed with at least two materials with a different polarity or a refractive index to easily form a light emitting diode. In addition, the light emitting diode die is bonded on the bottom surface of a cup, and an encapsulating material and microspheres are dispersed in the vicinity and upper portion of the light emitting diode and the entire light emitting diode, therefore the light emitting diode has a large and uniform divergence angle due to a light uniformly scattered and refracted. Furthermore, the microsphere particles with similar density to the encapsulating layer exist, thereby solving a problem of precipitation of particles, which occurs when the existing inorgan…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.