Patent ID: 6779783
Filing Date: 2004-08-24
Classification: H01L,H01R,H05K

Abstract:
A tape ball grid array package, comprising:a tape having: a dielectric layer having a first side, a second side and a plurality of via holes that pass through the dielectric layer; a patterned first metallic layer over the first side of the dielectric layer such that one end of the via holes is closed to form a plurality of blind holes; a patterned second metallic layer over the second side of the dielectric layer exposing the open end of the blind holes; a patterned first solder mask layer over the first metallic layer exposing a portion of the first metallic layer to serve as a plurality of contact points; a patterned second solder mask layer over the second metallic layer exposing a portion of the second metallic layer and the open end of the blind holes; a plurality of solder balls inserted into the blind holes with one end of the solder balls protruding out from the surface of the second solder mask layer, wherein the solder balls and the first metallic layer are electrically connected while at least one solder ball and the second metallic layer are electrically connected such that portions of the second metallic layer are circularly embedded in the solder ball; and at least one chip over the first side of the tape, wherein the chip connects electrically with various contact points on the tape.