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. 11, 2012
Filed:
Apr. 30, 2010
Applicants:
Mitsuru Honjo, Ibaraki, JP;
Daisuke Yamauchi, Ibaraki, JP;
Kei Nakamura, Ibaraki, JP;
Inventors:
Assignee:
Nitto Denko Corporation, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
H05K 1/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A plurality of wiring traces are formed on a base insulating layer, and a metal layer is formed on the opposite surface of the base insulating layer. Two adjacent wiring traces constitute a transmission line pair. The width of the wiring trace is set to not more than 250 μm, and the distance between the adjacent wiring traces is set to not less than 8 μm. The thickness of the base insulating layer is selected to cause differential impedance of the transmission line pair to be not less than 10 Ω and not more than 50 Ω.