Patent ID: 7897055
Filing Date: 2011-03-01
Classification: H05K,Y10T

Abstract:
1. A method for manufacturing a multilayer flexible printed circuit board, the method comprising steps of: providing a binder layer; removing a portion of the binder layer thereby defining an opening in the binder layer; attaching a first copper clad laminate structure and a second copper clad laminate structure on opposite sides of the binder layer, thus forming, a multilayer FPCB substrate, each of the first copper clad laminate structure and the second copper clad laminate structure comprising at least one dielectric layer and at least one conductive layer formed thereon, the first copper clad laminate structure having an excess portion, the excess portion being located above the opening of the binder layer; defining a first slit in the first copper clad laminate structure along a boundary of the excess portion, the first slit being in communication with the opening of the binder layer; and removing the excess portion of the first copper clad laminate along the boundary of the excess portion of the first copper clad laminate, thus a portion of the second copper clad laminate being exposed to an exterior through the opening of the binder layer.