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:
Jan. 09, 2018
Filed:
Mar. 11, 2015
Applicant:
Toshiba Memory Corporation, Minato-ku, JP;
Inventor:
Satoru Fukuchi, Chigasaki, JP;
Assignee:
TOSHIBA MEMORY CORPORATION, Minato-ku, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 17/50 (2006.01); H05K 1/11 (2006.01); H05K 1/02 (2006.01); H05K 3/00 (2006.01);
U.S. Cl.
CPC ...
G06F 17/5068 (2013.01); G06F 17/5031 (2013.01); G06F 17/5077 (2013.01); H05K 1/0245 (2013.01); H05K 1/116 (2013.01); H05K 1/0251 (2013.01); H05K 1/0298 (2013.01); H05K 3/0005 (2013.01);
Abstract
According to one embodiment, a multilayer printed board includes an insulating substrate, a differential signal wiring, and anti-pad regions. Distances between peripheries of the pad and a constant potential layer in each of the wiring layers are set so that a capacitance between the constant potential layers and a signal via included in a signal line constituting the differential signal wiring, which has a longer route from a transmission end to a reception end, is smaller than a capacitance between the constant potential layers and another signal via included in the other signal line.