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:
Apr. 17, 2007
Filed:
Jun. 29, 2004
Jun Hong Lee, Paju-Si, KR;
Hyung Jun Park, Paju-Si, KR;
Hyeong NO Kim, Paju-Si, KR;
Kun a Kang, Paju-Si, KR;
Jun Hong Lee, Paju-Si, KR;
Hyung Jun Park, Paju-Si, KR;
Hyeong No Kim, Paju-Si, KR;
Kun A Kang, Paju-Si, KR;
Abstract
A singulation method used in leadless packaging process is disclosed. An array of molded products on an upper surface of a lead frame is utilized in the singulation method. The lead frame has a plurality of dambars between the molded products. The lower surface of the lead frame is attached with a tape. Each of the molded products includes a semiconductor chip encapsulated in a package body and electrically coupled to the upper surface of the lead frame. The singulation method is accomplished by etching the upper surface of the lead frame with the package bodies as mask until each dambar is etched away.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile