Roughened copper foil, copper-clad laminate and printed wiring board

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United States of America Patent

PATENT NO 12104265
APP PUB NO 20240175162A1
SERIAL NO

18284630

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Abstract

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Provided is a roughened copper foil capable of achieving both excellent transmission characteristics and suppression of powdering. This roughened copper foil includes a roughened surface on at least one side. The roughened surface has a roughness slope tan θ of 0.58 or less as calculated based on a mean height Rc (μm) and a mean width RSm (μm) of profile elements by formula Rc/(0.5×RSm), and a sharpness index Rc×Sku of 2.35 or less that is a product of the mean height Rc (μm) and a kurtosis Sku. Rc and RSm are values measured in accordance with JIS B0601-2013 under a condition of not performing a cutoff by a cutoff value λs and a cutoff value λc, and Sku is a value measured in accordance with ISO 25178 under a condition of not performing a cutoff using an S filter and an L filter.

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Patent Owner(s)

Patent OwnerAddress
MITSUI MINING & SMELTING CO LTD1-11-1 OSAKI SHINAGAWA-KU TOKYO 1418584

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kato, Tsubasa Nantou, TW 4 6
Kawaguchi, Shota Ageo, JP 5 5
Tateoka, Ayumu Nantou, TW 12 37
Yang, Po Chun Nantou, TW 4 4

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