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. 02, 2010
Filed:
Jan. 20, 2010
Klaus Rinn, Heuchelheim, DE;
Klaus Rinn, Heuchelheim, DE;
Vistec Semiconductor Systems GmbH, Weilburg, DE;
Abstract
A method is disclosed which is suitable for the calibration of a measuring table () of a coordinate measuring machine (). For this purpose, a mask () is deposited in a three-point support of the measuring table (), wherein the mask () used for the calibration of the measuring table () is a mask (), which is used for the semiconductor production. The measurement of positions of a plurality of different structures () which are arranged in a distributed manner on the mask () is carried out. The structures () are available in an initial orientation on the mask (). The mask () is rotated and the position of the structures () is determined in the rotated orientation. Afterwards, the mask () is shifted and the position of the structures () is also determined. A total correction function for eliminating coordinate-dependant measuring errors is determined, wherein the total correction function has a first correction function and a second correction function.