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:
May. 17, 2005
Filed:
Nov. 21, 2002
Applicants:
Myung Seop Kim, Kyounggido, KR;
Hyoung Yun OH, Seoul, KR;
Inventors:
Myung Seop Kim, Kyounggido, KR;
Hyoung Yun Oh, Seoul, KR;
Assignee:
LG Electronics Inc., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B033/12 ;
U.S. Cl.
CPC ...
Abstract
Disclosed is an organic electroluminescent display device. The present invention includes a transparent substrate, an anode formed on the transparent substrate, an organic layer stacked on the anode, a cathode formed on the organic layer, and a buffer layer formed between the cathode and organic layer, the buffer layer including a first material selected from the group consisting of an alkaline metal and an alkaline earth metal compound and a second material selected from the group consisting of an organic compound and an organic metal compound.