Patent ID: 8253238

Claim:
A resin-sealed semiconductor device, comprising: a semiconductor element; a die pad supporting the semiconductor element; a bonding material for bonding the semiconductor element to the die pad; bonding wires; a plurality of signal leads electrically connected to the semiconductor element through the bonding wires; and a sealing member for sealing the semiconductor element, the die pad, the bonding material, the bonding wires, and a part of the plurality of signal leads with a sealing resin, wherein: a central portion of each of the plurality of signal leads is lifted from a peripheral portion thereof; the die pad has an exposure portion which is at least a part of a bottom surface of the die pad and exposed on a bottom surface of the sealing member; each of the plurality of signal leads has an exposure portion which corresponds to an end portion of corresponding one of the plurality of signal leads and is partially exposed as an external connection terminal on the bottom surface of the sealing member; the die pad further includes a thin portion provided substantially parallel to a mounting surface of the die pad in a side surface portion of the die pad; each of the plurality of signal leads further includes an lifted inner lead which corresponds to an other end portion of corresponding one of the plurality of signal leads; and the lifted inner lead includes: a bend portion for aligning an upper surface of the die pad and a rear surface of the lifted inner lead to substantially the same height; a protruding shape portion provided on one side in a signal lead width direction; and an inclined vertical surface provided on an other side as an inside in the signal lead width direction.