Patent ID: 7391106

Claim:
A stack type package comprising: a substrate; a plurality of guide substrate pairs which are stacked one pair on another pair in such a manner that each pair of guide substrates are disposed at opposing sides of one surface of the substrate so as to be opposed to each other, each guide substrate including a pair of horizontal bars attached to and extending from a vertical bar, the length and extension of the horizontal bars from the vertical bar giving the guide substrate a shape in the form of the letter ‘C’, at least one of the horizontal bars having a contact pad formed on a first surface of the horizontal bar, said vertical bar having a via hole formed in the vertical bar and wherein the vertical bar has an electrically conductive layer formed on an inner surface of the via hole and wherein the vertical bar with the via hole has a snap ring mounted on one side of the vertical bar, and a snap protrusion formed from the electrically conductive layer on the other side of the vertical bar; a plurality of chips, each of which is disposed between a pair of the guide substrates; and solder balls provided on the other surface of the substrate.