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:
Sep. 16, 2003
Filed:
Feb. 15, 2001
Applicant:
Inventors:
Dong-hyun Kim, Seoul, KR;
Ki-hyun Hwang, Kyungki-do, KR;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/1336 ;
U.S. Cl.
CPC ...
H01L 2/1336 ;
Abstract
A capacitor includes an electrode that has an inner surface, an outer surface, and an end surface. At least one of the inner surface and the outer surface has hemispherical grain (HSG) nodules thereon, but the end surface is substantially devoid of HSG nodules. By maintaining the end surface of the electrode substantially devoid of HSG nodules, the mechanical strength and integrity of the end surface may not be degraded. Therefore, the frequency in which portions of the end surface break away during, for example, a cleaning process, and create electrical bridges with adjacent electrodes may be reduced.