Patent ID: 8716868

Claim:
A semiconductor module for stacking, comprising: a first substrate having first and second surfaces; a first semiconductor chip mounted on the first surface of the first substrate; a plurality of first pads on the second surface of the first substrate; a plurality of second pads electrically connectable to an upper layer module, provided on the first surface of the first substrate outside a holding region of the first semiconductor chip; and a plurality of first connection terminals made of a solder formed on the plurality of first pads, wherein a plurality of opening sections are formed so as to expose the plurality of second pads in an insulating film covering portions of the plurality of second pads on the first surface of the first substrate, a planar shape of each of the plurality of opening sections is a polygon, and a planar shape of each of the plurality of first connection terminals is a circle, a portion of an outer shape of each of the plurality of opening sections protrudes beyond each of the plurality of first connection terminals when inspected by transmission in a stacking direction, the outer shape of each of the plurality of opening sections is larger than a diameter of each of the plurality of first connection terminals, a pitch of the plurality of opening sections and a pitch of the plurality of first connection terminals are equal, and a plurality of conductive materials connecting each of the plurality of first pads and each of the plurality of second pads respectively are formed in the first substrate, and a whole outer shape of each of the conductive materials is within an outer shape of each of the plurality of first connection terminals in a stacking direction.