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:
Feb. 10, 2015
Filed:
Apr. 07, 2005
Ji Weon Jeong, Daejeon, KR;
Young Chul Lee, Daejeon, KR;
Jeoung Kwen Noh, Yongin-si, KR;
Yun Hye Hahm, Seoul, KR;
Dong Seob Jeong, Daejeon, KR;
Jun Gi Jang, Daejeon, KR;
Ji Weon Jeong, Daejeon, KR;
Young Chul Lee, Daejeon, KR;
Jeoung Kwen Noh, Yongin-si, KR;
Yun Hye Hahm, Seoul, KR;
Dong Seob Jeong, Daejeon, KR;
Jun Gi Jang, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
A stacked organic light emitting device that includes an anode connected to an external power source, a cathode connected to the external power source, at least two light emitting sections aligned between the anode and the cathode, including a light emitting layer, and an internal electrode aligned between the light emitting sections. The internal electrode is a single-layered internal electrode which is made from one selected from the group consisting of a metal, alloys of the metal, and metal oxides thereof, having a work function below 4.5 eV, each light emitting section includes an organic material layer containing an organic material having an electron affinity above 4 eV, and the organic material layer is formed between the light emitting layer of the light emitting section and the electrode facing the anode connected to the external power source in two electrodes which make contact with the light emitting section.