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. 28, 2019
Filed:
Jan. 19, 2016
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Kazuki Matsunaga, Sakai, JP;
Katsuhiro Kikuchi, Sakai, JP;
Hideki Uchida, Sakai, JP;
Masanori Ohara, Sakai, JP;
Satoshi Inoue, Sakai, JP;
Eiji Koike, Sakai, JP;
Yuto Tsukamoto, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, Osaka, JP;
Abstract
The present invention provides an organic EL element with high luminous efficacy and high productivity, and an organic EL panel including the organic EL element. The organic electroluminescent element includes, in the given order: an anode; a hole transport layer; a light-emitting unit; an electron transport layer; and a cathode, the light-emitting unit including a first luminescent dopant layer, a first blocking layer, a second luminescent dopant layer, and a mixed light-emitting layer in the given order, the mixed light-emitting layer containing a first luminescent host material and a first luminescent dopant material, the first luminescent dopant layer substantially consisting of a second luminescent dopant material, the second luminescent dopant layer substantially consisting of a third luminescent dopant material, the first blocking layer containing a second luminescent host material.