Patent ID: 8900987

Claim:
A method for removing bumps from incomplete interposer die(s) and/or defective interposer die(s) of an interposer wafer, comprising: forming bumps on an interposer wafer; identifying at least one incomplete interposer die and/or at least one defective interposer die of the interposer wafer; removing bumps from the at least one incomplete interposer die and/or the at least one defective interposer die of the interposer wafer; wherein the act of forming bumps on the interposer wafer comprises: performing under bump metallization on the interposer wafer to form an under bump metal layer on the interposer wafer; forming a first photoresist layer on the under bump metal layer; plating bumps on the under bump metal layer using the first photoresist layer; and stripping the first photoresist layer; wherein the act of removing bumps from the at least one incomplete interposer die and/or the at least one defective interposer die of the interposer wafer, comprises: forming a second photoresist layer to protect bumps corresponding to interposer dies of the interposer wafer that are to be populated with semiconductor dies; etching bumps corresponding to the identified at least one incomplete interposer die and/or at least one defective interposer die of the interposer wafer; and stripping the second photoresist layer.