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. 27, 2014
Filed:
Sep. 30, 2011
Ki-woog Song, Imsil-gun, KR;
Sunghoon Pieh, Seoul, KR;
Ki-Woog Song, Imsil-gun, KR;
SungHoon Pieh, Seoul, KR;
LG Display Co., Ltd., Seoul, KR;
Abstract
An organic light emitting diode includes: a first electrode; a first hole transporting layer on the first electrode; a first emitting material layer on the first hole transporting layer, the first emitting material layer including a first host with a first dopant, wherein an energy level of a lowest unoccupied molecular orbital of the first dopant is higher than an energy level of a lowest unoccupied molecular orbital of the first host; a first electron transporting layer on the first emitting material layer; and a second electrode on the first electron transporting layer, wherein an energy level of each of the first hole transporting layer and the first electron transporting layer is higher than an energy level of a triplet state exciton of the first emitting material layer.