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:
Dec. 05, 1995
Filed:
Sep. 13, 1993
Applicant:
Inventor:
Bryan C Doi, Fremont, CA (US);
Assignee:
VLSI Technology, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
174 / ; 257659 ; 370-6 ;
Abstract
A method is used to shield a data line in a first metal layer from electrical probe. A first shielding line is placed directly over the data line. The first shielding line is within a second metal layer which is above the first metal layer. In the preferred embodiment, a second shielding line is placed on a first side of the data line. The second shielding line is in the first metal layer. Also, a third shielding line is placed on a second side of the data line. The third shielding line is also in the first metal layer. Also in the preferred embodiment, the first shielding line, the second shielding line and the third shielding line are all connected to Vss.