Invention Grant
- Patent Title: Light-emitting device
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Application No.: US15204211Application Date: 2016-07-07
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Publication No.: US09936559B2Publication Date: 2018-04-03
- Inventor: Shuichi Seki , Shigehiro Umetsu , Hiroki Tan , Katsuhiro Kanauchi
- Applicant: Pioneer Corporation , Tohoku Pioneer Corporation
- Applicant Address: JP Tokyo JP Yamagata
- Assignee: PIONEER CORPORATION,TOHOKU PIONEER CORPORATION
- Current Assignee: PIONEER CORPORATION,TOHOKU PIONEER CORPORATION
- Current Assignee Address: JP Tokyo JP Yamagata
- Agency: Procopio, Cory, Hargreaves & Savitch LLP
- Main IPC: H05B33/08
- IPC: H05B33/08 ; H01L51/50 ; H01L27/32 ; H05B33/14

Abstract:
A light-emitting device (10) includes a first light-emitting region (100) and a second light-emitting region (200). The first light-emitting region (100) emits a light ray having a first color by making a first light-emitting layer group including at least two or more kinds of light-emitting layers emit light. In addition, the second light-emitting region (200) emits a light ray having the first color (for example, daylight color, natural white color, white color, warm white color, or incandescent color) by making a second light-emitting layer group including at least two or more kinds of light-emitting layers emit light. In addition, at least one kind of light-emitting layer included in the second light-emitting layer group emits a light ray having a different spectrum peak from all of the light-emitting layers included in the first light-emitting layer group. Therefore, the color-rendering properties of light emitted from the light-emitting device (10) are improved.
Public/Granted literature
- US20160323965A1 LIGHT-EMITTING DEVICE Public/Granted day:2016-11-03
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