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.:

US 7408216 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 05, 2008

Filed:

Jul. 11, 2006
Applicants:

Leonard Forbes, Corvallis, OR (US);

Joseph E. Geusic, Berkeley Heights, NJ (US);

Kie Y. Ahn, Chappaqua, NY (US);

Inventors:

Leonard Forbes, Corvallis, OR (US);

Joseph E. Geusic, Berkeley Heights, NJ (US);

Kie Y. Ahn, Chappaqua, NY (US);

Assignee:

Micron Technology, Inc., Boise, ID (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/108 (2006.01);
U.S. Cl.
CPC ...
Abstract

Some embodiments of the invention include a memory cell having a vertical transistor and a trench capacitor. The trench capacitor includes a capacitor plate with a roughened surface for increased surface area. Other embodiments are described and claims.


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