Invention Grant
- Patent Title: Light emitting device, display device, and electronic device
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Application No.: US16037866Application Date: 2018-07-17
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Publication No.: US10411214B2Publication Date: 2019-09-10
- Inventor: Akio Fukase , Hidetoshi Yamamoto
- Applicant: SEIKO EPSON CORPORATION
- Applicant Address: JP Tokyo
- Assignee: SEIKO EPSON CORPORATION
- Current Assignee: SEIKO EPSON CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JP2017-146223 20170728
- Main IPC: H01L29/08
- IPC: H01L29/08 ; H01L35/24 ; H01L51/00 ; H01L51/50 ; H01L27/32

Abstract:
Provided is a light emitting device configured to suppress deterioration in a balance of white light emission and increase a service life. The light emitting device includes a red light emitting layer, a blue light emitting layer, a green light emitting layer, a first intermediate layer configured to adjust a transfer of holes and electrons between the red light emitting layer and the blue light emitting layer, and a second intermediate layer configured to adjust the transfer of holes and electrons between the blue light emitting layer and the green light emitting layer. The intermediate layers and the blue light emitting layer each contain an assist dopant material, a concentration of the assist dopant material in the intermediate layers being greater than a concentration of the assist dopant material in the blue light emitting layer.
Public/Granted literature
- US20190036061A1 LIGHT EMITTING DEVICE, DISPLAY DEVICE, AND ELECTRONIC DEVICE Public/Granted day:2019-01-31
Information query
IPC分类: