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:
Nov. 19, 2013
Filed:
Mar. 14, 2007
Jun-gi Jang, Daejeon, KR;
Chang-hwan Kim, Jeju-si, KR;
Dong-seob Jeong, Seoul, KR;
Sang-young Jeon, Daejeon, KR;
Kong-kyeom Kim, Daejeon, KR;
Wook-dong Cho, Daejeon, KR;
Ji-eun Kim, Daejeon, KR;
Byung-sun Jeon, Seoul, KR;
Jun-Gi Jang, Daejeon, KR;
Chang-Hwan Kim, Jeju-si, KR;
Dong-Seob Jeong, Seoul, KR;
Sang-Young Jeon, Daejeon, KR;
Kong-Kyeom Kim, Daejeon, KR;
Wook-Dong Cho, Daejeon, KR;
Ji-Eun Kim, Daejeon, KR;
Byung-Sun Jeon, Seoul, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
The present invention provides an organic light emitting device comprising a first electrode, a second electrode, and at least two organic material layers interposed therebetween, including a light emitting layer, wherein the organic material layers comprise at least one layer of a hole injecting layer, a hole transporting layer and a hole injecting and transporting layer, and at least one of the hole injecting layer, the hole transporting layer and the hole injecting and transporting layer comprises a material with a HOMO energy level of −4 eV or less, and a material with a LUMO energy level of −4 eV or less, and a process for preparing the same.