Patent ID: 8516694

Claim:
A method for manufacturing printed circuit board, comprising: providing an inner substrate including a first electrically conductive layer; forming a first electrically conductive pattern in the first electrically conductive layer, the first electrically conductive pattern comprising an exposed region spatially corresponding to a cavity to be formed and an attaching region surrounding the exposed region; printing and curing ink material on the first electrically conductive pattern over the entire exposed region to form a protective layer; laminating a first adhesive layer on the attaching region of the first electrically conductive pattern and the protective layer; laminating a second electrically conductive layer on the first adhesive layer, the second electrically conductive layer comprising a first region superposing on the attaching region and a second region superposing on the exposed region; forming a second electrically conductive pattern in the first region of the second electrically conductive layer; defining a slit along a boundary between the exposed region and the attaching region the slit passing through the second electrically conductive layer and the first adhesive layer, and removing portions of the second electrically conductive layer, the first adhesive layer and the protective layer surrounded by the slit to form the cavity.