Characterization of flip chip bonded structure with Cu ABL power bumps
The ABL (advanced bump layer) bumps to improve power distribution were newly idealized and designed. The process feasibility of flip chip bonded structure with Cu ABL bumps has been demonstrated. The process reliability issues were investigated for Cu ABL bumps. The electrical resistivity of Cu ABL bump daisy chain system was estimated to 3.3E?8?m.
flip chip bonding abl power bumps power distribution thermal reliability