Patent · US Active

Organic electroluminescence element, illumination device, and display device

US10774261B2 · kind B2 · utility

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10Claims

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Assignee

KONICA MINOLTA, INC. · JP

Inventors

Tomohiro Oshiyama · Hachioji, JP
Shinya Otsu · Tokyo, JP
Rie Katakura · Hino, JP
Satoru Inoue · Mishima, JP

Key dates

Filing date	Dec 6, 2013
Grant date	Sep 15, 2020
Priority date	—
Expiry date	May 29, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH10K2101/10
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

An organic electroluminescence element includes: an anode; a cathode; and a luminous layer. The luminous layer includes: a luminescent dopant having a reorganization energy of 0 eV to 0.7 eV in electron transition from a ground state (S0) to a lowest excited triplet state (T1); and a host compound having a reorganization energy of 0 eV to 0.3 eV in electron transfer reaction between a ground state (S0) and an anionic radical state (AR), and having a molecular weight within a range of 500 to 3000.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.