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:
Jul. 31, 2001
Filed:
Aug. 28, 1998
Kouji Yasukawa, Chiba, JP;
Hiroyuki Endo, Ibaraki, JP;
Hideo Kato, Tokyo, JP;
Junichi Shimamura, Tokyo, JP;
Osamu Onitsuka, Chiba, JP;
Akira Ebisawa, Ibaraki, JP;
TDK Corporation, Tokyo, JP;
Abstract
An organic EL device comprises a substrate, an organic EL structure stacked on the substrate, a sealing plate located on the organic EL structure with a predetermined space therebetween, and a sealing adhesive agent for fixing the sealing plate on the substrate and thereby closing up the organic EL structure. The sealing adhesive agent is a photo-curing type adhesive agent which, upon photo-curing, generates gases under heating conditions of 85° C. and 60 minutes. In these gases, the total amount of a low-molecular straight-chain aliphatic hydrocarbon which may have a substituent, an aromatic hydrocarbon which may have a substituent, an alicyclic hydrocarbon which may have a substituent, and a heterocyclic compound and a siloxane which may have a substituent is 200 &mgr;g/g or lower calculated as benzene. The organic EL device of the invention is reduced as much as possible in terms of a deterioration with time, and can maintain its initial performance over a long period of time, so that it can have an ever longer service life.