Patent ID: 7282787

Claim:
A multilayer package comprising: a first substrate including: a first conductive pad and a first conductive layer disposed in the first substrate; and a first via extending through at least a portion of the first substrate and providing an electrical connection between the first conductive pad and the first conductive layer; a second substrate including: a second pad and a second conductive layer disposed in the second substrate; and a second via extending through at least a portion of the second substrate and providing an electrical connection between the second conductive pad and the second conductive layer; a third substrate including: a third conductive pad and a third conductive layer disposed in the third substrate; a third via extending through at least a portion of the third substrate and providing an electrical connection between the third conductive pad and the third conductive layer; a fourth conductive pad and a fourth conductive layer disposed in the third substrate; and a fourth via extending through at least a portion of the third substrate and providing an electrical connection between the fourth conductive pad and the fourth conductive layer; a first adhesive film disposed between the first substrate and the third substrate and having an aperture located at least in part between the first and third conductive pads, the first adhesive film mechanically bonding the first substrate and the third substrate; a first solder segment occupying at least a substantial portion of the aperture in the first adhesive film and providing an electrical connection between the first conductive pad and the third conductive pad, the first solder segment being formed at least in part by a reflow of solder paste applied to at least one of the first conductive pad and third conductive pad; a second adhesive film disposed between the second substrate and the third substrate and having an aperture located at least in part between the second and fourth conductive pads, the second adhesive film mechanically bonding the second substrate and the third substrate; a second solder segment occupying at least a substantial portion of the aperture in the second adhesive film and providing an electrical connection between the second conductive pad and the fourth conductive pad, the second solder segment being formed at least in part by a reflow of solder paste applied to at least one of the second conductive pad and fourth conductive pad.