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:
Mar. 02, 2021
Filed:
Feb. 13, 2015
Sumitomo Electric Industries, Ltd., Osaka, JP;
Kenji Saito, Osaka, JP;
Youichi Nagai, Osaka, JP;
Kenichi Hirotsu, Osaka, JP;
Takashi Iwasaki, Osaka, JP;
Shougo Asai, Koka, JP;
Hiroyuki Matsuyama, Joetsu, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
Provided is a flexible printed circuit including: a film-shaped insulating base material having flexibility and having a withstand voltage value of at least 2000 V; and an electric conductor layer formed on the insulating base material and forming a circuit pattern, wherein with respect to the insulating base material, a principal component thereof is a polyimide and a filler content thereof is 0%. Thus, a flexible printed circuit can be obtained that has an insulating base material which suppresses decrease in withstand voltage performance even in a high humidity environment.