Invention Grant
- Patent Title: Organic electroluminescent element
- Patent Title (中): 有机电致发光元件
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Application No.: US11315324Application Date: 2005-12-23
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Publication No.: US07727640B2Publication Date: 2010-06-01
- Inventor: Hiroshi Tada , Hisashi Okada
- Applicant: Hiroshi Tada , Hisashi Okada
- Applicant Address: JP Tokyo
- Assignee: Fujifilm Corporation
- Current Assignee: Fujifilm Corporation
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2004-382033 20041228; JP2005-343785 20051129
- Main IPC: H01L51/54
- IPC: H01L51/54 ; C09K11/06

Abstract:
The present invention provides an organic electroluminescent element including, between an anode and a cathode, at least a luminescent layer and an adjacent layer that is adjacent to the cathode side of the luminescent layer, wherein the luminescent layer contains a phosphorescent material and a host material, the adjacent layer contains an electron transport material and a hole transport material, and the electron affinity Ea (HT) of the hole transport material and the electron affinity Ea (ET) of the electron transport material satisfy the relation of 1 eV≦Ea (ET)−Ea (HT)≦2.8 eV.
Public/Granted literature
- US20060141286A1 Organic electroluminescent element Public/Granted day:2006-06-29
Information query
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