Patent ID: 8409979

Claim:
A method of making a semiconductor device, comprising: providing a substrate; forming a first insulating layer including a plurality of openings disposed over the substrate; forming a plurality of conductive pads within the openings of the first insulating layer over the substrate; forming a plurality of recesses partially into the conductive pads while retaining a portion of the conductive pads under the recesses by, (a) forming a second insulating layer including a plurality of openings disposed over the conductive pads, and (b) forming the plurality of recesses through a surface of the conductive pads within the openings of the second insulating layer, the recesses each including a sidewall extending to a surface of the recess to expand an interconnect surface area of the conductive pads; providing a semiconductor die including a plurality of bumps formed over a surface of the semiconductor die; and disposing the semiconductor die over the substrate with the bumps contacting the expanded interconnect surface area of the conductive pads to increase bonding strength of the bumps to the conductive pads.