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:
Mar. 20, 2007
Filed:
Sep. 10, 2004
Patrick Blessing, Thalwil, CH;
Patrick Blessing, Thalwil, CH;
Unaxis International Trading Ltd, Cham, CH;
Abstract
An apparatus for mounting semiconductor chips onto a substrate contains a measuring station for the contactless measurement of the height of the surface of the mounted semiconductor chip facing away from the substrate at a minimum of three locations. From this, at least one parameter is calculated that characterises the adhesive layer formed between the semiconductor chip and the substrate. A difference of the measured value to a set value is used to adjust the mounting process. An apparatus for wiring semiconductor chips also contains such a measuring station in order to determine the individual height of each connection point on the semiconductor chip. This information is used in order to lower the capillary to the respective connection point on the semiconductor chip in the shortest possible time.