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. 26, 2010
Filed:
Feb. 18, 2004
Jeong Dae Seo, Gyeonggi-do, KR;
Hee Jung Kim, Seoul, KR;
Kyung Hoon Lee, Seoul, KR;
Hyoung Yun OH, Seoul, KR;
Myung Seop Kim, Seoul, KR;
Chun Gun Park, Seoul, KR;
Jeong Dae Seo, Gyeonggi-do, KR;
Hee Jung Kim, Seoul, KR;
Kyung Hoon Lee, Seoul, KR;
Hyoung Yun Oh, Seoul, KR;
Myung Seop Kim, Seoul, KR;
Chun Gun Park, Seoul, KR;
LG Display Co., Ltd., Seoul, KR;
Abstract
Disclosed is an organic electroluminescent device including a substrate, a first and second electrodes, and a light-emitting layer formed between the first electrode and the second electrode, and a hole-blocking layer formed between the light-emitting layer and the second electrode and using a material of a chemical formula 1. In this case, at least one of Aand Ais selected from a substituted or non-substituted aromatic group, a heterocyclic group, an aliphatic group, halogen, and hydrogen.