Invention Grant
- Patent Title: Light-emitting element, light-emitting device, display device, and electronic apparatus
- Patent Title (中): 发光元件,发光装置,显示装置和电子设备
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Application No.: US14643439Application Date: 2015-03-10
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Publication No.: US09401492B2Publication Date: 2016-07-26
- Inventor: Hidetoshi Yamamoto , Akio Fukase
- 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: JP2014-078251 20140404
- Main IPC: H01L51/50
- IPC: H01L51/50 ; H01L51/00

Abstract:
Disclosed herein is a light-emitting element, including: a cathode; an anode; and a light-emitting unit, in which the light-emitting unit includes a first light-emitting layer, a second light-emitting layer, and a third light-emitting layer, which are laminated from the anode side to the cathode side, in which each of the first, second, and third light-emitting layers is configured to contain a luminescent material, a host material, and an assist dopant material, and in which, when the contents of the assist dopant materials contained in the first, second, and third light-emitting layers are respectively expressed by CAssist(EML1), CAssist(EML2) and CAssist(EML3), the following Relational Expression (A) is satisfied: CAssist(EML1)≧CAssist(EML2)>CAssist(EML3)≧0 (A).
Public/Granted literature
- US20150287947A1 LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, DISPLAY DEVICE, AND ELECTRONIC APPARATUS Public/Granted day:2015-10-08
Information query
IPC分类: