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:
Jan. 10, 2017
Filed:
Oct. 31, 2014
Samsung Display Co., Ltd., Yongin, Gyeonggi-Do, KR;
Doosan Corporation, Seoul, KR;
Seul-Ong Kim, Yongin, KR;
Mi-Kyung Kim, Yongin, KR;
Dong-Woo Shin, Yongin, KR;
Chang-Woong Chu, Yongin, KR;
Tae Hyung Kim, Seoul, KR;
HoCheol Park, Seoul, KR;
Youngmi Beak, Seoul, KR;
Min-Sik Eum, Seoul, KR;
Eunjung Lee, Seoul, KR;
Chang Jun Lee, Seoul, KR;
SAMSUNG DISPLAY CO., LTD., Yongin-Si, KR;
DOSAN CORPORATION, Seoul, KR;
Abstract
An organic light-emitting device includes a positive electrode, a negative electrode and at least one organic material layer between the positive electrode and the negative electrode. The at least one organic material layer includes a hole-injecting layer, a hole-transporting layer, an emission layer, an electron-transporting layer, and an electron-injecting layer, and the emission layer includes a host material and a dopant material. In addition, a lifetime enhancement layer including a bipolar compound is positioned between the emission layer and the electron-transporting layer.