Insulating material, passive element, circuit board, and method of manufacturing an insulating sheet
AssigneesNippon Mektron, Ltd., Osaka University
InventorsMasaya Nogi, Katsuaki Suganuma, Hirotaka Koga, Natsuki Komoda, Hirofumi Matsumoto, Masayuki Iwase, Kazuyuki Ozaki, Keizo Toyama
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Abstract
Disclosed are an insulating material (high-k layer) which includes a fiber assembly mainly composed of a cellulose nanofiber, and an electroconductive metal material supported by the fiber assembly; and a passive element (capacitor) which includes a high-k layer which is composed of the insulating material, and an electroconductive part stacked on the high-k layer.
Claims18
An insulating material comprising a fiber assembly mainly composed of a cellulose nanofiber, and an electroconductive metal material supported by the fiber assembly, wherein the electroconductive metal material is fibrous, and the fibrous electroconductive metal material, supported by 100 g of cellulose nanofiber, has a total length of 1×10^7 m or longer and 5×10^8 m or shorter.
A method of manufacturing an insulating sheet which is mainly composed of a cellulose nanofiber, the method comprising:
- filtering a suspension which contains a fiber material mainly composed of the cellulose nanofiber and an electroconductive metal material, to thereby form a filter sheet which contains the fiber material and the electroconductive metal material;
- and drying the filter sheet, wherein the electroconductive metal material is fibrous, and the fibrous electroconductive metal material, supported by 100 g of cellulose nanofiber, has a total length of 1×10^7 m or longer and 5×10^8 m or shorter.
Dependencies are inferred from the claim text.