Rolled copper foil
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United States of America Patent
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Jul 17, 2012
Grant Date -
Jan 15, 2009
app pub date -
Jul 8, 2008
filing date -
Jul 11, 2007
priority date (Note) -
Expired
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Abstract
A rolled copper foil according to the present invention includes a crystal grain alignment wherein: when normalized intensity of {200}Cu plane diffraction of a copper crystal in results obtained by an X-ray diffraction pole figure measurement with respect to a rolled surface is plotted against at different values of angle α, the normalized intensity being obtained during a β scanning in the pole figure measurement, a ratio of a maximum value A of the normalized intensity with angle α in a range of 40° to 60° to a maximum value B of the normalized intensity with angle α in a range of 80° to 90° is equal to or greater than 4; and when the normalized intensity increases with increasing angle α in a range of 25° to 45°, there is essentially no area in which the normalized intensity increases stepwise.
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