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:
Apr. 10, 2018
Filed:
Apr. 22, 2015
Liteq B.v., Nuenen, NL;
Donald Charles Dilworth, Nuenen, NL;
KULICKE & SOFFA LITEQ B.V., Ae Eindhoven, NL;
Abstract
The present disclosure concerns a photolithography apparatus () and method for controlling relative image size (S/S) of a projected substrate pattern (W). A projection system () is arranged for projecting an image of a mask pattern (M) as the substrate pattern (W) onto a substrate (), wherein the projection system () comprises an adjustment lens () moveable in a range (Xmin,Xmax) encompassing a central position (X) for controlling a relative image size (S/S). The projection system () is arranged to project the mask pattern (M) onto the adjustment lens () such that, when the adjustment lens () is positioned at the central position (X), an apparent mask pattern (M') from a point of view of the adjustment lens () appears to be at a distance (2*F) from the adjustment lens () that is twice a focal length (F) of the adjustment lens ().