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:
Nov. 06, 2018
Filed:
Sep. 24, 2017
Applicant:
Globalfoundries Singapore Pte. Ltd., Singapore, SG;
Inventors:
Assignee:
GLOBALFOUNDRIES SINGAPORE PTE. LTD., Singapore, SG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/00 (2006.01);
U.S. Cl.
CPC ...
H01L 24/13 (2013.01); H01L 24/27 (2013.01); H01L 24/33 (2013.01); H01L 2224/16235 (2013.01);
Abstract
A seal ring structure is disclosed for integrated circuit (IC) packaging. The seal ring includes an inner moisture barrier ring and an outer crack stop ring. Line structures of both the inner and outer rings include chamfered corners. The chamfers of a chamfered corner are devoid of acute angles. No metal line structure for the inner ring is provided at the pad level. The seal ring as described improves the reliability and strength of the structure and hence the seal ring can sustain high stress at the corners of the die during dicing.