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:
Jun. 24, 2003
Filed:
Aug. 09, 2002
Applicant:
Inventors:
Edward R. Pillai, Wappingers Falls, NY (US);
Warren D. Dyckman, Peekskill, NY (US);
Deana Cosmadelis, Dover Plains, NY (US);
Assignee:
International Business Machine Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/940 ; H01L 3/900 ; H01L 2/302 ; H03H 7/38 ;
U.S. Cl.
CPC ...
H01L 2/940 ; H01L 3/900 ; H01L 2/302 ; H03H 7/38 ;
Abstract
In a package for integrated circuits, a signal transmission line has a first segment closer to the chip that is bracketed vertically by ground planes at a first vertical distance and a second segment further from the chip that is bracketed vertically by ground planes at a second vertical distance greater than the first distance, with an aperture being formed in the ground planes at the first distance, so that those ground planes do not interfere with the impedance set by the second set of ground planes.