Invention Grant
- Patent Title: Organic electroluminescence element
- Patent Title (中): 有机电致发光元件
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Application No.: US11902891Application Date: 2007-09-26
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Publication No.: US09012034B2Publication Date: 2015-04-21
- Inventor: Masaru Kinoshita , Manabu Tobise
- Applicant: Masaru Kinoshita , Manabu Tobise
- Applicant Address: IE Dublin
- Assignee: UDC Ireland Limited
- Current Assignee: UDC Ireland Limited
- Current Assignee Address: IE Dublin
- Agency: Riverside Law LLP
- Priority: JP2006-265987 20060928
- Main IPC: H01J1/63
- IPC: H01J1/63 ; C09K11/06 ; H05B33/14 ; H01L51/00 ; H01L51/50 ; H01L51/52

Abstract:
An organic electroluminescence element includes at least a light-emitting layer between a pair of electrodes, wherein the light-emitting layer is divided into at least three layers, an intermediate layer containing an electron blocking material or a hole blocking material is disposed between the divided light-emitting layers, an Ea value of the electron blocking material is smaller than an Ea value of a host material of the divided light-emitting layer adjacent on a cathode side or an Ip value of the hole blocking material is larger than an Ip value of a host material of the divided light-emitting layer adjacent on the anode side of the intermediate layer, and a difference of ΔEa or ΔIp is controlled to specific range.
Public/Granted literature
- US20080174236A1 Organic electroluminescence element Public/Granted day:2008-07-24
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