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:
Dec. 16, 2014
Filed:
Oct. 25, 2005
Applicants:
Jun-yeob Lee, Suwon-si, KR;
Min-seung Chun, Suwon-si, KR;
Yong-joong Choi, Suwon-si, KR;
Inventors:
Assignee:
Samsung Display Co., Ltd., Yongin, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/54 (2006.01); H05B 33/14 (2006.01); C09K 11/06 (2006.01); H01L 51/50 (2006.01); H01L 51/00 (2006.01);
U.S. Cl.
CPC ...
C09K 11/06 (2013.01); C09K 2211/1044 (2013.01); C09K 2211/1014 (2013.01); H01L 51/0071 (2013.01); H01L 51/0081 (2013.01); H01L 51/0072 (2013.01); H05B 33/14 (2013.01); C09K 2211/186 (2013.01); H01L 51/0085 (2013.01); H01L 51/006 (2013.01); H01L 51/5016 (2013.01); C09K 2211/181 (2013.01); C09K 2211/1029 (2013.01); Y10S 428/917 (2013.01);
Abstract
An organic light-emitting device is provided. The organic light-emitting device comprises a first electrode, a second electrode, and a light-emitting layer interposed between the first electrode and the second electrode. The device further comprises of a phosphorescent dopant and a phosphorescent host that includes at least two hole transport materials. The mixed phosphorescent host materials increase energy transfer efficiency, thereby improving the efficiency and lifespan of the resulting organic light-emitting device.