Patent ID: 7115442

Claim:
A method for manufacturing a ball grid array package with stacked center pad chips, the ball grid array package including two center pad type semiconductor chips consisting of upper and lower semiconductor chips, each of which has chip pads formed along a central portion of an active surface of each of the upper and lower semiconductor chips, the method comprising the steps of: gluing both the upper and lower semiconductor chips on upper and lower circuit boards respectively, which have active surfaces facing each other, wherein each of the of the upper and lower circuit boards has an opening to expose the chip pads; connecting the chip pads to respective one of the upper and lower circuit boards with gold wires through the respective opening of the upper or lower circuit board; joining the upper and lower circuit boards directly together with bumps interposed between them for electrical connection; and forming a package mold by including the upper circuit board in the package mold and exposing the opposite ends of the lower circuit board to the lower portion of the package mold.