Patent ID: 9018533
Filing Date: 2015-04-28
Classification: H05K,Y10T

Abstract:
1. A cover-lay film comprising: a base material film comprising a resin or a rubber elastic body, the base material film having a textured surface created on at least a part of one surface of the base material film, and a non-textured surface on the one surface excluding the part where the textured surface is created, the base material film having a thickness of 3 to 25 μm, and the textured surface having an arithmetic mean roughness Ra of 0.3 to 3 μm and a size of 0.1 to 40 mm 2 ; and a deposition film made of a conductive material which is formed on the one surface of said base material film on a side where said textured surface has been created, wherein a portion of the deposition film formed on said non-textured surface exhibits a surface resistance R 1 of from 0.0 to 5Ω, and a portion of the deposition film formed on said textured surface exhibits a surface resistance R 2 of two to one hundred times greater than the surface resistance R 1 .