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:
Aug. 14, 2018
Filed:
Sep. 22, 2017
Japan Display Inc., Tokyo, JP;
Koji Yasukawa, Tokyo, JP;
Japan Display Inc., Tokyo, JP;
Abstract
A light emitting device includes a pixel electrode, an organic layer, and a counter electrode, wherein the organic layer includes a first organic layer having a hole injecting property, a second organic layer having a hole transporting property, a third organic layer having an electron blocking property, a light emitting layer containing a host material and a dopant material, a fourth organic layer having a hole blocking property, and a fifth organic layer having an electron transporting property, wherein the fifth organic layer includes an alkali metal such as calcium or lithium and the like or an alkaline earth metal, and a total layer thickness of the first organic layer, the second organic layer, and the third organic layer is smaller than a total layer thickness of the fourth organic layer and the fifth organic layer.