JPH07110940B

• Format: Patent
• Language: English
• Published: 29.11.1995
• Edition: 6
• 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

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.