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:
Nov. 17, 2020
Filed:
Jul. 02, 2014
Joled Inc., Tokyo, JP;
Minh Hiep Hoang, Kanagawa, JP;
Noriyuki Matsusue, Tokyo, JP;
Masaki Nishimura, Tokyo, JP;
Kazuhiro Yoneda, Tokyo, JP;
JOLED INC., Tokyo, JP;
Abstract
An organic EL element includes: an anode; a light-emitting layer that is disposed above the anode; a first interlayer that is disposed on the light-emitting layer; a second interlayer that is disposed on the first interlayer; a functional layer that is disposed on the second interlayer; and a cathode that is disposed above the functional layer. The first interlayer includes a fluorine compound including a first metal that is an alkali metal or an alkaline-earth metal. The second interlayer includes a second metal that has a property of cleaving a bond between the first metal and fluorine in the fluorine compound. The functional layer has at least one of an electron transport property and an electron injection property. A thickness D1 of the first interlayer and a thickness D2 of the second interlayer satisfy 3%≤D2/D1≤25%.