Patent ID: 6919624

Claim:
A semiconductor device, comprising: a first substrate formed of an insulating material having at least one through hole; a semiconductor element secured to a desired position of a conductive pattern formed on a first main surface of the first substrate; a plurality of electrodes for external connection on a second main surface of the first substrate located opposite to the first main surface of the first substrate that is electrically connected to the desired conductive pattern via the through hole; a resin mold formed so as to cover, at least, the main surfaces of the first substrate, wherein the semiconductor device is characterized in that a second substrate formed of an insulating material having approximately a same coefficient of linear expansion as the first substrate is adhered to the second main surface of the first substrate so that, at least, the electrodes are exposed; and wherein a portion of the second substrate passes between at least two of the electrodes and extends from the second main surface at least as far as the electrodes extend from the second main surface.