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:
Feb. 13, 2024
Filed:
Apr. 19, 2019
Ube Industries, Ltd., Ube, JP;
Norio Miura, Ube, JP;
Kazutaka Narita, Ube, JP;
Ube Corporation, Ube, JP;
Abstract
A flexible electronic device containing a polyimide film exhibiting excellent C-V characteristics. The polyimide film is a film that shows a maximum gradient of 0.005/V or more in a capacitance-voltage measurement of a laminate in which a polyimide film having a film thickness of 0.75 μm is formed on a silicon wafer having a resistance value of 4 Ωcm; the maximum gradient meaning a maximum value of an absolute value of a gradient in a normalized capacity-voltage curve during a third scan of forward direction scans; a capacity-voltage curve being measured by applying a direct current voltage is to the polyimide film with respect to the silicon wafer between a lowest voltage Vand a highest voltage V, and measuring capacitance while the direct current voltage is scanned in a forward direction and scanned in a negative direction; the normalized capacity-voltage curve being normalized so that the capacity at the lowest voltage Vis 1.