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:
Jul. 08, 2008
Filed:
Oct. 06, 2006
Applicants:
Ishtiaq Ahsan, Wappingers Falls, NY (US);
Edward P. Maciejewski, Wappingers Falls, NY (US);
Inventors:
Ishtiaq Ahsan, Wappingers Falls, NY (US);
Edward P. Maciejewski, Wappingers Falls, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 21/66 (2006.01);
U.S. Cl.
CPC ...
Abstract
Detection of a profile drift of a polysilicon line is enhanced by a test structure that () measures a bottom width and an average width of a cross sectional area of the same polysilicon line () correlates the two measurements, and () compares such correlation with a previous correlation of bottom width to average width of cross sectional area of the same polysilicon line.