Patent ID: 7667318
Filing Date: 2010-02-23
Classification: H01L

Abstract:
1. A fan out type wafer level package structure, comprising: a base, wherein at least one passive component is on said base; an adhesion material formed on said base; a die having a plurality of pads on a top surface that is opposite a bottom surface which is on said adhesion material; a first dielectric layer formed on said base and filled in a space except said die on said base, wherein the first dielectric layer includes silicone rubber, epoxy, resin or BCB to act as a buffer layer to release stress; a second dielectric layer formed on said first dielectric layer and said die, wherein said second dielectric layer including a plurality of openings for contact with said plurality of pads; a contact conductive layer formed on said plurality of pads of said die and within said openings to electrically couple with said pads, respectively; a plurality of conductive lines formed on said second dielectric layer and in contact with, said contact conductive layer and substantially filling said openings, and said conductive lines being extended out from corresponding said contact conductive layer to corresponding end points; an isolation layer formed on said conductive lines and said second dielectric layer; and solder balls passing through said isolation layer welded on said conductive lines for coupling with said conductive lines, respectively.