Title:
光拡散型発光ダイオード
Document Type and Number:
Japanese Patent JP2009512226
Kind Code:
A
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 inorganic particles are dispersed.
Inventors:
Kim, zepil
Park, Seung Hyun
Kim, tehun
Lee, Zemun
Yoo, Young Moon
Park, Seung Hyun
Kim, tehun
Lee, Zemun
Yoo, Young Moon
Application Number:
JP2008536506A
Publication Date:
March 19, 2009
Filing Date:
October 20, 2006
Export Citation:
Assignee:
Korea Photonics Technology Institute
International Classes:
H01L33/50; H01L33/56; H01L33/60; H01L33/62
Domestic Patent References:
| JP2005167079A | 2005-06-23 | |||
| JP2002261328A | 2002-09-13 | |||
| JP2005026401A | 2005-01-27 | |||
| JP2005158766A | 2005-06-16 | |||
| JP2006241230A | 2006-09-14 |
Attorney, Agent or Firm:
Masaharu Hagiri