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    • 25. 发明授权
    • Treated copper foil and circuit board
    • 处理铜箔和电路板
    • US07381475B2
    • 2008-06-03
    • US11052998
    • 2005-02-07
    • Yuuji Suzuki
    • Yuuji Suzuki
    • B32B15/20
    • C25D1/04C25D5/16C25D7/0614H05K3/384H05K2201/0355H05K2203/0307H05K2203/0723Y10T428/12063Y10T428/12438Y10T428/12903Y10T428/1291Y10T428/12993Y10T428/24917Y10T428/25
    • An object of the present invention is to provide a treated copper foil laminated with a mesomorphic polymer film having low hygroscopicity and superior high thermal resistance to make a circuit board composite materials having large peel strength and compatibility with fine pattern processes, which a copper foil being deposited with roughening particles to make the treated copper foil having a roughening treated side with surface roughness of 1.5 to 4.0 μm and luminosity of not more than 30, having projections formed from the roughening particles with a height of 1 to 5 μm, preferably 6 to 35 thereof are uniformly distributed in a 25 μm of surface length of copper foil cross-section observed, and its maximum width being at least 0.01 μm and not more than twice of 25 μm divided by the number of projections in the 25 μm surface length.
    • 本发明的目的是提供一种具有低吸湿性和优异的高耐热性的介晶聚合物膜的处理铜箔,以制造具有大的剥离强度和与精细图案工艺相容的电路板复合材料,铜箔是 沉积有粗糙颗粒以使具有1.5至4.0μm的表面粗糙度和不大于30的表面粗糙度的粗糙化处理侧的处理过的铜箔具有由粗糙度为1至5μm,优选6至5μm的粗糙颗粒形成的突起 35均匀分布在观察到的铜箔截面的25μm的表面长度上,其最大宽度为25μm以上的0.01μm以上2倍以下,除以25μm的表面长度的突起数。