Abstract: A wiring board of an embodiment includes an insulating substrate and a wiring layer provided on the insulating substrate. The wiring layer has external connection terminals including a ground terminal. The wiring layer is covered by an insulating layer having holes for exposing the external connection terminals. The insulating layer has an opening for exposing the ground terminal toward a side surface of the wiring board. The opening is provided continuously from at least one of the holes. A semiconductor chip mounted on the wiring board is sealed by a sealing resin layer. An upper surface and side surfaces of the sealing resin layer and the side surfaces of the wiring board are covered by a conductive shield layer. The conductive shield layer is electrically connected to the ground terminal via a connection formed in the opening.

Abstract: A semiconductor device having an array of dummy interconnections in a fuse window are proposed. The each dummy interconnection comprised of a fuse body scheduled to be blown away by laser beam, a fuse wiring extended up to the bottom of the fuse body from one side of the fuse window, and another fuse wiring extended up to the bottom of the fuse body form the another side of the fuse window. Contact plugs are disposed on terminal portions of the fuse wirings respectively, the terminal portions facing to each other having a predetermined gap between them. The bottom surfaces of both terminal portions of the fuse body are electrically connected with the facing terminal portions of the fuse wirings through the contact plugs, respectively. The length of the fuse body is set so as to have a length not shorter than the predetermined gap and not exceeding a diameter of laser beam to blow off the fuse body.

Abstract: A semiconductor device having an array of dummy interconnections in a fuse window are proposed. The each dummy interconnection comprised of a fuse body scheduled to be blown away by laser beam, a fuse wiring extended up to the bottom of the fuse body from one side of the fuse window, and another fuse wiring extended up to the bottom of the fuse body form the another side of the fuse window. Contact plugs are disposed on terminal portions of the fuse wirings respectively, the terminal portions facing to each other having a predetermined gap between them. The bottom surfaces of both terminal portions of the fuse body are electrically connected with the facing terminal portions of the fuse wirings through the contact plugs, respectively. The length of the fuse body is set so as to have a length not shorter than the predetermined gap and not exceeding a diameter of laser beam to blow off the fuse body.