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:
Oct. 21, 2003
Filed:
Oct. 02, 2001
Takenori Izumizawa, Kanagawa, JP;
Kenji Furukawa, Kanagawa, JP;
Chisso Corporation, Osaka, JP;
Abstract
An organic EL device having an organic EL structure which moisture does not enter and maintaining stable luminescence characteristics for a long period of time. An anode ( ), and organic substance layer ( ), and a cathode ( ) are formed on a transparent substrate ( ). A combination (insulating layer-moisture reaction layer combination) including an insulating layer ( ) and a moisture reaction layer ( ) formed on the insulating layer ( ) covers an organic EL structure including the organic substance layer, the cathode, and a portion of the anode. The material of the moisture reaction layer ( ) is a metal having a Pauling's electronegativity of less than 1.2. There are large differences in the number of dark spots produced and the growth of the dark spots between a metal; e.g., Ca (1.0), whose electronegativity is less than 1.2 and a metal; e.g., Mg (1.2), whose electronegativity is 1.2.