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. 28, 2019
Filed:
Feb. 08, 2018
Applicant:
Ohkuchi Materials Co., Ltd., Kagoshima, JP;
Inventor:
Jun Fukuzaki, Kagoshima, JP;
Assignee:
OHKUCHI MATERIALS CO., LTD., Kagoshima, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/48 (2006.01); H01L 23/49 (2006.01); H05K 1/05 (2006.01); H01L 23/495 (2006.01); H01L 21/48 (2006.01); H05K 1/02 (2006.01);
U.S. Cl.
CPC ...
H01L 23/49544 (2013.01); H01L 21/4828 (2013.01); H01L 21/4842 (2013.01); H01L 23/49541 (2013.01); H01L 23/49548 (2013.01); H05K 1/0296 (2013.01); H05K 1/05 (2013.01);
Abstract
A lead frame constitutes a product unit in a multi-row lead frame and has a dam bar and a lead connected together. The dam bar has a first site where connection is made with the lead and a second site adjoining the first site without connection with the lead. A predetermined range in the lead near a connecting portion with the dam bar and the second site in the dam bar have a plate thickness smaller than that of the first site having a same plate thickness as a metal plate as a material from which the dam bar and the lead are made.