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. 19, 2002
Filed:
Sep. 17, 2001
Applicant:
Inventor:
Takayuki Yoshida, Osaka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/362 ; H01L 2/334 ; H01L 2/348 ; H01L 2/352 ; H01L 2/3495 ; H01L 2/940 ;
U.S. Cl.
CPC ...
H01L 2/362 ; H01L 2/334 ; H01L 2/348 ; H01L 2/352 ; H01L 2/3495 ; H01L 2/940 ;
Abstract
A wiring board according to the present invention has a substrate, a plurality of lines provided on the substrate, an interference-preventive conductor layer provided between the lines to have open ends and prevent signal interference between the lines, and a via electrically connected to the interference-preventive conductor layer. The via is provided at a point at which a distance from each of the open ends of the interference-preventive conductor layer is less than one quarter of a wavelength corresponding to a maximum frequency component of harmonic components contained in the signal.