The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 2004
Filed:
May. 31, 2002
Junji Kido, Kitakatsuragi-gun, Nara, JP;
Hitoshi Furusho, Funabashi, JP;
Hiroyoshi Fukuro, Funabashi, JP;
Other;
Abstract
An electroluminescent device comprising an anode, a cathode, and at least one electroluminescent organic layer interposed therebetween, wherein a luminescent material in the organic layer emits light upon application of a voltage between the anode and the cathode, is characterized in that a salt of an electron accepting dopant with a polyimide precursor and/or polyimide having oligo-aniline units on side chains is formed as an auxiliary carrier transporting layer between the anode and the organic layer, the polyimide precursor and/or polyimide being obtained from a diamine component containing at least 1 mol % of an oligo-aniline unit-bearing diaminobenzene derivative and a tetracarboxylic dianhydride or derivative thereof.