Invention Grant
- Patent Title: Light-emitting device and method for manufacturing same
-
Application No.: US15744318Application Date: 2017-01-11
-
Publication No.: US10431721B2Publication Date: 2019-10-01
- Inventor: Sadato Imai , Tatsuya Katoh , Masahiro Watanabe , Kazuki Matsumura
- Applicant: CITIZEN ELECTRONICS CO., LTD. , CITIZEN WATCH CO., LTD.
- Applicant Address: JP Fujiyoshida-Shi, Yamanashi JP Nishitokyo-Shi, Tokyo
- Assignee: CITIZEN ELECTRONICS CO., LTD.,CITIZEN WATCH CO., LTD.
- Current Assignee: CITIZEN ELECTRONICS CO., LTD.,CITIZEN WATCH CO., LTD.
- Current Assignee Address: JP Fujiyoshida-Shi, Yamanashi JP Nishitokyo-Shi, Tokyo
- Agency: Procopio, Cory, Hargreaves & Savitch LLP
- Priority: JP2016-017986 20160202
- International Application: PCT/JP2017/000661 WO 20170111
- International Announcement: WO2017/134994 WO 20170810
- Main IPC: H01L27/15
- IPC: H01L27/15 ; C09K11/55 ; H01J1/62 ; H01L33/56 ; H05B33/14 ; H01L33/50 ; H01J63/04 ; H01L33/52 ; H01L25/075 ; H01L33/62

Abstract:
Provided is a light-emitting device and a method for manufacturing the same which avoid a distinct color unevenness during the light emission even if variations are present among the light-emitting elements in the concentration of the phosphor that precipitates in the resin for sealing the light-emitting elements. The light-emitting device includes a substrate, a plurality of light-emitting elements that are mounted on the substrate, a first resin layer that integrally seals the light-emitting elements and includes a first phosphor that is excited by light from the light-emitting elements at a concentration that is high as it goes to a lower end near the substrate from an upper end distant from the substrate, and a second resin layer that is provided at an upper side of the first resin layer and includes a second phosphor that is excited by light from the light-emitting elements at a uniform concentration.
Public/Granted literature
- US20180204986A1 LIGHT-EMITTING DEVICE AND METHOD FOR MANUFACTURING SAME Public/Granted day:2018-07-19
Information query
IPC分类: