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. 04, 2004
Filed:
Jun. 24, 2002
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
The present invention solves a problem that in a wire bonding process, an inert gas used for prevention of oxidation of a substrate gave rise to shimmer due to the temperature difference during bonding, thereby degrading the precision of pattern recognition. With this invention's bonding device , shielding lids , and are disposed at upper and lower parts of a ring illumination and at a lower part of lens barrel . Shimmer of nitrogen gas that blows out from a working hole can thus be prevented from entering inside ring illumination , especially by shielding lid at the lower part of ring illumination . As a result, the recognition precision of a recognition camera can be improved and the wire bonding precision of the &mgr;m order can be improved.