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:
Apr. 01, 2025
Filed:
Jun. 23, 2021
Sumitomo Electric Industries, Ltd., Osaka, JP;
Sumitomo Electric Printed Circuits, Inc., Koka, JP;
Maki Ikebe, Osaka, JP;
Koji Nitta, Osaka, JP;
Shoichiro Sakai, Osaka, JP;
Shingo Nagata, Osaka, JP;
Junichi Motomura, Koka, JP;
Masahiro Itoh, Koka, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
SUMITOMO ELECTRIC PRINTED CIRCUITS, INC., Koka, JP;
Abstract
A flexible printed wiring board according to an aspect of the present disclosure is a flexible printed wiring board including a base film and a plurality of wiring lines disposed on a front surface of the base film. Each of the wiring lines has a front end surface extending in a longitudinal direction of the wiring line and two side surfaces extending in the longitudinal direction, and the side surfaces have an arithmetical mean roughness Ra of 0.05 μm to 2.0 μm. The wiring lines have an average height of 40 μm to 120 μm. The wiring lines have an average spacing of 1 μm to 30 μm.