Abstract:
A multi-layer integrated circuit (400) and method of manufacturing thereof having barbed vias (427) connecting conductive lines (468, 408). Circuit (400) includes a first dielectric layer (404) deposited on a substrate (402) and conductive lines (408) formed in the first dielectric layer (404). A second dielectric layer (462) is deposited over the first dielectric layer (404). Barbed vias (427) are formed having a substantially cylindrical portion (424) within the second dielectric layer (462) and a barbed portion (426) within conductive lines (408). Conductive lines (468) are formed over the barbed vias (427) within a the second dielectric layer (462). A region of the barbed via (427) barbed portion (406) extends beneath the second dielectric layer (462).
Abstract:
In an integrated circuit structure, the improvement comprising a wire bonded Cu-pad with Cu-wire component, wherein the Cu-pad Cu-wire component is characterized by self-passivation, low resistance, high bond strength, and improved resistance to oxidation and corrosion, the Cu-pad Cu-wire component comprising: a metallization-line; a liner separating the metallization line and a Cu-alloysurrounding a Cu-pad; a dielectric surrounding the liner; anda Cu-pad bonded to a Cu-alloy wire; the Cu-wire component being characterized by self-passivation areas on: a) a dopant rich interface in between the Cu-alloy and liner; b) a surface of the Cu-pad; c) a surface of the bond between the Cu-pad and the Cu-alloy wire; and d) a surface of the Cu-alloy wire.
Abstract:
A semiconductor device (200) having support structures (218, 226, 236) beneath wirebond regions (214) of contact pads (204) and a method of forming same. Low modulus dielectric layers (216, 222, 232) are disposed over a workpiece (212). Support structures (218, 226, 236) are formed in the low modulus dielectric layers (216, 222, 232), and support vias (224, 234) are formed between the support structures (218, 226, 236). A high modulus dielectric film (220, 230) is disposed between each low modulus dielectric layer (216, 222, 232), and a high modulus dielectric layer (256) is disposed over the top low modulus dielectric layer (232). Contact pads (204) are formed in the high modulus dielectric layer (256). Each support via (234) within the low modulus dielectric layer (232) resides directly above a support via (224) in the underlaying low modulus dielectric layer (222), to form a plurality of via support stacks within the low modulus dielectric layers (216, 222, 232).