Invention Grant
- Patent Title: Light-emitting device
-
Application No.: US15018704Application Date: 2016-02-08
-
Publication No.: US09640738B2Publication Date: 2017-05-02
- Inventor: Yuta Morimura , Yuhki Ito
- Applicant: TOYODA GOSEI CO., LTD.
- Applicant Address: JP Kiyosu-Shi, Aichi-Ken
- Assignee: TOYODA GOSEI CO., LTD.
- Current Assignee: TOYODA GOSEI CO., LTD.
- Current Assignee Address: JP Kiyosu-Shi, Aichi-Ken
- Agency: McGinn IP Law Group, PLLC
- Priority: JP2015-039142 20150227
- Main IPC: H01L29/49
- IPC: H01L29/49 ; H01L33/50 ; H01L33/56

Abstract:
A light-emitting device includes a light-emitting element, a sealing material for sealing the light-emitting element, a phosphor particle having an average particle size of not more than 20 nm and dispersed in the sealing material, a dispersed particle dispersed in the sealing material and forming a three-dimensional network structure in the sealing material, and a light-scattering particle dispersed in the sealing material, having an average particle size greater than that of the phosphor particle and that of the dispersed particle, and having a refractive index greater than that of the sealing material. A concentration gradient of the phosphor particle in a height direction is formed such that a concentration thereof increases according as a position thereof decreases. An average position of the phosphor particle is lower than that of the light-scattering particle.
Public/Granted literature
- US20160254417A1 LIGHT-EMITTING DEVICE Public/Granted day:2016-09-01
Information query
IPC分类: