Patent ID: 6643434
Filing Date: 2003-11-04
Classification: G02B,H01L,H05K

Abstract:
An apparatus comprising:a first chip including a plurality of bonding bumps formed thereon, said first chip also including a plurality of recesses formed therein at pre-selected locations relative to said plurality of bonding bumps; a second chip including a plurality of bonding pads formed thereon, said second chip also including a plurality of projections extending therefrom at pre-selected locations relative to said plurality of bonding pads; and a plurality of bonding members coupled between at least one of: said plurality of bonding bumps and said plurality of bonding pads; and said plurality of projections adjacent said plurality of recesses; wherein at least one of said plurality of recesses and said plurality of projections includes angled walls for capturing and directing the other of said plurality of recesses and said plurality of projections during reflow of said bonding members such that said first chip aligns relative to said second chip; and wherein said plurality of projections further comprise one of a plurality of conical and pyramidal members.