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:
Nov. 23, 2010
Filed:
Jun. 06, 2008
Applicants:
Werner Graf, Dresden, DE;
Lars Heineck, Radebeul, DE;
Martin Popp, Dresden, DE;
Inventors:
Assignee:
Qimonda AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 29/792 (2006.01);
U.S. Cl.
CPC ...
Abstract
In one embodiment, a memory cell includes a bit line arranged in a semiconductor substrate and a bit line contact region arranged adjacent the bit line. A word line is arranged above the bit line contact region in a trench formed in the semiconductor substrate. A generally U-shaped insulating layer is arranged in a bottom region of the trench and separates the bit line and the bit line contact region from the word line.