Patent ID: 7961585

Claim:
A semiconductor device, in which a semiconductor element is mounted on a lead frame, wherein the lead frame comprises: a die pad on which the semiconductor element is mounted; a first lead terminal being an external terminal connected to the die pad; one or a plurality of second lead terminals being external terminals formed separately from the die pad; the first lead terminal being displaced from the die pad by means of a bend section and extending in a direction parallel to a surface of the die pad; resin of a frame structure formed so as to hold the first lead terminal and the second lead terminal while forming wall faces in at least three directions in a region for mounting the semiconductor element, including a portion of the first lead terminal and the second lead terminal adjacent to the die pad; and a connection section in which a slit is formed in the first lead terminal at least between the die pad and a neighborhood region including the bend section, and wherein at least one portion of the connection section where the slit is formed is located in a region where the resin is formed and is filled with the resin.