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. 28, 2014
Filed:
May. 15, 2009
Min-soo Kang, Daejeon, KR;
Jeoung-kwen Noh, Daejeon, KR;
Se-hwan Son, Daejeon, KR;
Jung-bum Kim, Daejeon, KR;
Min-Soo Kang, Daejeon, KR;
Jeoung-Kwen Noh, Daejeon, KR;
Se-Hwan Son, Daejeon, KR;
Jung-Bum Kim, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
The present invention provides a stacked organic light emitting diode that comprises a first electrode; a second electrode; and at least two light emitting units that are located between the first electrode and the second electrode. The light emitting unit satisfies the following energy relation equation, and includes an n-type organic layer and a p-type organic layer that form NP conjunction, and also includes an n-type doped organic layer that is located between the light emitting units:≦1 eV