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:
Feb. 28, 2006
Filed:
Sep. 19, 2003
Applicant:
Takeshi Ashida, Matsumoto, JP;
Inventor:
Takeshi Ashida, Matsumoto, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 31/02 (2006.01); B23K 35/12 (2006.01); H01L 29/40 (2006.01);
U.S. Cl.
CPC ...
Abstract
There is provided a mask for use in printing solder on a plurality of terminals formed on a substrate so as to correspond to a plurality of terminals of an IC package. The mask has openings through which the solder is applied, and the openings are larger than the terminals. Although a wiring line adjacent to the terminals may be covered with the solder, a reflow process causes the solder to be divided into a first portion and a second portion, thus preventing short-circuits between the wiring line and the terminals.