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. 26, 1998
Filed:
Jul. 19, 1996
Applicant:
Inventors:
Assignee:
Taiwan Semiconductor Manufacturing Company, Ltd., Hsin-Chu, TW;
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
257529 ; 257773 ; 257409 ;
Abstract
The guard ring is a barrier which prevents contaminates from diffusing through a window opening through insulating layers to adjacent semiconductor devices. The guard ring is formed surrounding a window in the insulation layers over a fuse link or an alignment mark. The guard ring is an annular metal ring that penetrates two or more insulating layers and contacts the substrate.