Shielded printed wiring board and manufacturing method of shielded printed wiring board

摘要

The present invention provides a shielded printed wiring board having excellent connection stability and a high degree of freedom in circuit design even when the opening area of the through hole is small. The shielding printed wiring board (1) of the present invention includes a printed wiring board (10), an insulating layer (22), and a conductive adhesive layer (21) disposed between the printed wiring board (10) and the insulating layer (22), , the printed wiring board 10 has a base member 11, a circuit pattern 13 provided on the surface of the base member, and an insulating protective layer 14 covering the circuit pattern 13, the insulating layer ( 22) and a through hole 23 for external ground connection penetrating through the conductive adhesive layer 21 in the thickness direction, wherein the conductive adhesive layer 21 has the through hole 23 rather than the insulating layer 22. ) has an extension (21a) extending inward.