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:
May. 12, 2015
Filed:
Jul. 15, 2013
Mitsubishi Chemical Corporation, Chiyoda-ku, JP;
Tomohiro Abe, Kanagawa, JP;
Futoshi Tanaka, Kanagawa, JP;
Kazuki Okabe, Kanagawa, JP;
Atsushi Takahashi, Kanagawa, JP;
Koichiro Iida, Kanagawa, JP;
Ichiro Imada, Kanagawa, JP;
Mitsubishi Chemical Corporation, Chiyoda-ku, JP;
Abstract
The present invention relates to an organic electroluminescent element which comprises two or more hole injection/transport layers each formed by a wet film formation method using a composition containing, as a hole-injecting/transporting compound, an arylamine polymer compound that has a repeating unit having a triarylamine structure therein, in which when the number of atoms present on the path which is the smallest in the number of atoms present thereon, of the paths which each connect the nonaromatic tertiary nitrogen atoms contained in any two triarylamine structures present in each polymer compound, is taken as N: the minimum number of atoms between nitrogen atoms in the compound, then the N in each hole injection/transport layer is in a specific state.