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:
Jan. 29, 2019
Filed:
Jun. 18, 2012
Hiroshige Tanaka, Kitakyushu, JP;
Tohru Asari, Kitakyushu, JP;
Kazuto Shiraishi, Kitakyushu, JP;
Mitsuru Sakai, Kitakyushu, JP;
Masashi Niina, Kitakyushu, JP;
Kazuaki Yoshimura, Kitakyushu, JP;
Hiroshige Tanaka, Kitakyushu, JP;
Tohru Asari, Kitakyushu, JP;
Kazuto Shiraishi, Kitakyushu, JP;
Mitsuru Sakai, Kitakyushu, JP;
Masashi Niina, Kitakyushu, JP;
Kazuaki Yoshimura, Kitakyushu, JP;
NIPPON STEEL & SUMIKIN CHEMICAL CO., LTD., Tokyo, JP;
Abstract
Provided are a polymer for an organic electroluminescent element, which has improved luminous efficiency and is applicable to a wet process, and an organic electroluminescent element obtained therefrom. The polymer for an organic electroluminescent element has a repeating unit represented by [—(Z)-(A)-]in repeating units constituting a main chain. In addition, the organic electroluminescent element includes, between an anode and a cathode laminated on a substrate, organic layers including a hole-transporting layer and a light-emitting layer, in which at least one of the organic layers contains the polymer for an organic electroluminescent element. In the repeating unit, Z represents an N-indolocarbazolyl group, A represents a repeating unit different from Z, l and m each represent an abundance molar ratio, and l is 5 to 100 mol % and m is 0 to 95 mol %, and n is 2 to 10,000.