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:
May. 21, 1996
Filed:
May. 23, 1994
Masaharu Shirai, Ohtsu, JP;
Kimihiro Yamanaka, Shiga, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
In a substrate member (e.g., circuit board), a plurality of openings (15) are formed in an insulating film (14) which covers electric lines (12) formed on a substrate 11, with pad constructing (contacting) portions (13) of selected ones of the electric lines being exposed. In one example, the pad constructing portion (that portion of the pad to which final connection is to occur, e.g., by solder to a semiconductor device), is set to a first dimension (e.g., length) having a dimension less than a corresponding dimension of the original length. The film openings are also set to another dimension having an allowance size larger than a corresponding dimension of the pad constructing portion. The opening is thus of sufficiently large size in comparison to the respective pad being exposed so as to assure effective tolerance compensation for film positioning deviations in at least two (e.g., X and Y) directions as might occur during production of the substrate member.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile