ORGANIC ELECTROLUMINESCENT ELEMENT

PURPOSE:To obtain the subject element having improved thermal stability and excellent luminescent characteristics and suitable as a surface light source, etc., for back light by using a specific compound as a hole-transporting material constituting a luminescent layer or a hole-transporting layer. C...

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Bibliographic Details
Main Authors NAKANO TSUYOSHI, KUWABARA MASATO, NOGUCHI MASANOBU, ONISHI TOSHIHIRO
Format Patent
LanguageEnglish
Published 11.01.1994
Edition5
Subjects
ADHESIVES
BASIC ELECTRIC ELEMENTS
CHEMISTRY
DYES
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
SEMICONDUCTOR DEVICES
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Summary:PURPOSE:To obtain the subject element having improved thermal stability and excellent luminescent characteristics and suitable as a surface light source, etc., for back light by using a specific compound as a hole-transporting material constituting a luminescent layer or a hole-transporting layer. CONSTITUTION:The objective element is produced by preparing a luminescent layer containing a hole-transporting material consisting of an aromatic amine compound of formula I to formula III [Ar1 to Ar5 are >=6C aromatic hydrocarbon group or >=4C aromatic heterocyclic group containing hetero atoms; A1 to A10 are group of formula IV, formula V (R1 to R4 are H, 1-12C alkyl, etc.; (a) and (b) are 0-5; (c) and (d) are 0-4), etc.] or a luminescent layer containing a luminescent compound and a hole-transporting layer containing the above hole-transporting material and sandwiching the layers between a pair of electrodes at least one of which is (semi)transparent. The hole-transporting material is e.g. 4,4',4''-tris(diphenylamino) triphenylamine and the luminescent material is e.g. tris(8-quinolinol)aluminum.
Bibliography:Application Number: JP19920107548