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:
Jan. 30, 2007
Filed:
Jul. 29, 2004
Wen Dong Song, Singapore, SG;
Minghui Hong, Singapore, SG;
Chengwu an, Singapore, SG;
Yong Feng LU, Singapore, SG;
Wen Dong Song, Singapore, SG;
Minghui Hong, Singapore, SG;
Chengwu An, Singapore, SG;
Yong Feng Lu, Singapore, SG;
Data Storage Institute, Singapore, SG;
Abstract
This invention relates to a method and apparatus for deflashing integrated circuit (IC) packages by laser irradiation. The method and apparatus include two lasers scanning flash area for performing deflashing operation. COlaser is used to remove top layer of flash and YAG laser is used to remove the thin layer of flash remained after COlaser deflashing. COlaser deflashing and following YAG laser deflashing can effectively remove flash and avoid damage of heat sinks as well as leads and bars in the IC packages.