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:
Mar. 03, 2015
Filed:
Mar. 14, 2013
Applicant:
Infineon Technologies Ag, Neubiberg, DE;
Inventors:
Achim Gratz, Dresden, DE;
Thimo Schindelar, Wenzenbach, DE;
Assignee:
Infineon Technologies AG, Neubiberg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/544 (2006.01); H01L 21/78 (2006.01);
U.S. Cl.
CPC ...
H01L 23/544 (2013.01); H01L 21/78 (2013.01);
Abstract
A wafer has a number of IC areas and a kerf area arranged between the IC areas. The kerf area has a dicing area, a crack stop structure arranged between an IC area and a dicing area, and a trench arranged between the crack stop structure and the dicing area. The crack stop structure includes an extended layer extending beyond the crack stop structure towards the dicing area.