Patent ID: 8895430

Claim:
A method of making a semiconductor device, comprising: providing a semiconductor wafer including a plurality of semiconductor die comprising a plurality of contact pads; forming an insulating layer over the semiconductor wafer and the plurality of contact pads; forming a plurality of openings in the insulating layer over the contact pads; forming a first conductive layer over and electrically connected to the plurality of contact pads; forming a second conductive layer over and electrically connected to the first conductive layer; providing a mask including a plurality of mask openings with a width less than a width of the openings in the insulating layer; disposing the mask over the semiconductor wafer with the mask openings aligned over the plurality of contact pads; depositing a conductive bump material within the plurality of mask openings and on the second conductive layer; removing the mask; reflowing the conductive bump material to form a plurality of bumps with a height of a first bump of the plurality of bumps less than a width of the first bump; and singulating the plurality of semiconductor die.