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. 24, 2024
Filed:
Apr. 10, 2023
Sumitomo Electric Industries, Ltd., Osaka, JP;
Sumitomo Electric Printed Circuits, Inc., Shiga, JP;
Koji Nitta, Osaka, JP;
Yasushi Mochida, Osaka, JP;
Yoshio Oka, Osaka, JP;
Shoichiro Sakai, Osaka, JP;
Tadahiro Kaibuki, Osaka, JP;
Junichi Okaue, Shiga, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
SUMITOMO ELECTRIC PRINTED CIRCUITS, INC., Shiga, JP;
Abstract
A flexible printed circuit board includes a base film having an insulating property and a plurality of interconnects laminated to at least one surface side of the base film. The plurality of interconnects includes a first interconnect and a second interconnect in a same plane. An average thickness of the second interconnect being greater than an average thickness of the first interconnect. A ratio of the average thickness of the second interconnect to the average thickness of the first interconnect is greater than or equal to 1.5 and less than or equal to 50. The first interconnect includes a first conductive underlayer and a first plating layer, and the second interconnect includes a second conductive underlayer, a second plating layer, and a third plating layer.