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:
Feb. 18, 2009
Choon-woo Lim, Suwon-si, KR;
Kwan-hee Lee, Suwon-si, KR;
Kyung-hoon Choi, Suwon-si, KR;
Dong-hun Kim, Suwon-si, KR;
Choon-Woo Lim, Suwon-si, KR;
Kwan-Hee Lee, Suwon-si, KR;
Kyung-Hoon Choi, Suwon-si, KR;
Dong-Hun Kim, Suwon-si, KR;
Samsung Display Co., Ltd., Giheung-Gu, Yongin, Gyeonggi-Do, KR;
Abstract
An organic light emitting device includes a substrate; a first electrode; a second electrode; and an organic layer including an emission layer between the first electrode and the second electrode. The organic layer includes a first intermediate layer including a first host and a first dopant, a second intermediate layer including the first dopant, and a third intermediate layer including a second host and the first dopant interposed between the first electrode and the emission layer. The organic light emitting device has a long lifetime.