Patent ID: 9673646
Date: 2017-06-06
CPC Classifications: B29C,B29K,B29L,B32B,C22F,C23C,C23F,C25D,H02J,H05K

Claim:
1. A surface treated copper foil comprising: (a) a copper content greater than 90%; (b) (R (c) a tensile strength reduction rate is lower than 15% after 200° C.×1 hr annealing; (d) based on a total sum of texture coefficients of a (111) plane, a (200) plane, a (220) plane and a (311) plane of the surface treated copper foil, a sum of the texture coefficients of the (200) plane and the (220) plane of the surface treated copper foil is greater than 50%, wherein texture coefficients of the surface treated copper foil for each of a (111) plane, a (200) plane, a (220) plane and a (311) plane is obtained by calculation from measurement of X-ray diffraction intensity on a resist side after 200° C.×1 hr. annealing; wherein the tensile strength is in the range of 29 to 39 kg/mm