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:
Feb. 05, 2019
Filed:
Jul. 19, 2018
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Sayaka Mizutani, Sodegaura, JP;
Takayasu Sado, Sodegaura, JP;
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Abstract
An organic EL device includes an anode, an emitting layer, an electron transporting zone and a cathode in this sequence, in which the electron transporting zone contains an aromatic heterocyclic derivative represented by a formula (1) below. In the formula (1), Xto Xare a nitrogen atom or CR, and A is represented by a formula (2) below. In the formula (2), Lis s single bond or a linking group, and HAr is represented by a formula (3) below. In the formula (3), Yis an oxygen atom, a sulfur atom or the like, and one of Xto Xis a carbon atom bonded to Lby a single bond and the rest of Xto Xare a nitrogen atom or CR