Patent ID: 8648261

Claim:
A printed circuit board, comprising: a circuit substrate comprising a base layer, a grounded circuit layer formed on the base layer, and a connecting pad formed on the grounded circuit layer; a conductive adhesive layer formed onto the circuit substrate and electrically connected with the connecting pad; a solder mask layer formed on the conductive adhesive layer; and a shielding structure comprising a shielding metal layer, and an electrically connecting layer formed on the shielding metal layer, the electrically connecting layer comprising an adhesive matrix and a plurality of electrically conductive particles doped in the adhesive matrix, a size of each of the electrically conductive particles being larger than a thickness of the solder mask layer, the electrically connecting layer being laminated on the solder mask layer by a thermal laminating process, thereby, the particles extending through the solder mask layer and being in electrical contact with the conductive adhesive layer and the shielding metal layer.