Patent ID: 8495815

Claim:
An electromagnetic shielding method comprising the steps of: disposing a flexible electromagnetic shielding film including a laminate of at least an insulating layer and a conductive metal layer to cover a portion to be electromagnetically shielded on a printed wiring board so that the insulating layer faces the printed wiring board, the conductive metal layer having a higher melting temperature than that of the insulating layer; heating the electromagnetic shielding film to a temperature to melt and contract the insulating layer, thereby bonding the conductive metal layer to a grounding conductor of the printed wiring board and electrically connecting the conductive metal layer to the grounding conductor, the heating temperature being higher than the melting temperature of the insulating layer and lower than the melting temperature of the conductive metal layer; and cutting an excess portion of the electromagnetic shielding film outside a bonded portion between the conductive metal layer and the grounding conductor.