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:
Oct. 16, 2007
Filed:
Jul. 02, 2004
Cristian Presura, Veldhoven, NL;
Jan Evert Van Der Werf, Waalre, NL;
Cristian Presura, Veldhoven, NL;
Jan Evert Van Der Werf, Waalre, NL;
ASML Netherlands B.V., Veldhoven, NL;
Abstract
A marker structure on a substrate includes line elements and trench elements, the line elements and trench elements each having a length in a first direction and being arranged in an alternating repetitive sequence in a second direction perpendicular to the first direction, the alternating repetitive sequence having a sequence length, the marker structure having at least one pitch value, the at least one pitch value being the sum of a line width of one line element and a trench width of one trench element. A width of the line elements varies over the sequence length of the marker structure between a minimum line width value and a maximum line width value, while a width of the trench elements likewise varies over the sequence length of the marker structure between a minimum trench width value and a maximum trench width value. A duty cycle of a pair of a line element and an adjacent trench element is substantially constant over the sequence length of the marker structure. Thus, the pitch value varies from a minimum pitch value to a maximum pitch value over the sequence length.