Abstract:
There is provided a semiconductor device, comprising a substrate (101) that includes an integrated circuit region (1), first and second interlayer insulation films (108, 111, 112) formed above the substrate, and a reinforcing structure comprising a main-wall part (2) and a sub-wall part (3) which are formed in the first and second interlayer insulation films, wherein the main-wall part surrounds the integrated circuit region in a periphery thereof and the sub-wall part is provided apart from the main-wall part in a corner region of the semiconductor device and is located between the integrated circuit region and the first bend section of the main-wall part. Both the main-wall part and the sub-wall part are formed by metal-filled trenches (131, 132) in the first and second interlayer insulation films.
Abstract:
There is provided a semiconductor device, comprising a substrate (101) that includes an integrated circuit region (1), first and second interlayer insulation films (108, 111, 112) formed above the substrate, and a reinforcing structure comprising a main-wall part (2) and a sub-wall part (3) which are formed in the first and second interlayer insulation films, wherein the main-wall part surrounds the integrated circuit region in a periphery thereof and the sub-wall part is provided apart from the main-wall part in a corner region of the semiconductor device and is located between the integrated circuit region and the first bend section of the main-wall part. Both the main-wall part and the sub-wall part are formed by metal-filled trenches (131, 132) in the first and second interlayer insulation films.
Abstract:
The present invention is related to a method for bonding and interconnecting two or more IC devices (10a,10b) arranged on substrates such as silicon wafers (1a,1b), wherein the wafers are bonded by a direct bonding technique to form a wafer assembly, and wherein the multiple IC devices are provided with metal contact structures (4a,4b). A TSV (Through Semiconductor Via) (16,30;16+16',30+30') is produced through the bonded wafer assembly, wherein the IC device or devices in upper wafer or wafers have contact structures (4a) that serve as masks for the etching of the TSV opening. A conformal isolation liner (17) is deposited in the TSV opening, and subsequently removed from the bottom and any horizontal areas in the TSV opening, while maintaining the liner on the sidewalls, followed by deposition of a TSV plug (18) in the TSV opening. The removal of the liner is done without applying a lithography step.
Abstract:
There is provided a semiconductor device which comprises a second insulating film (29) formed on a substantially flat surface, on which a surface of a first wiring (36) and a surface of a first insulating film (95) are continued, to cover the first wiring (36), a wiring trench (28a) formed in the second insulating film (29), connection holes (38a) formed in the second insulating film (29) to extend from the wiring trench (28a) to the first wiring (36), dummy connection holes (38b) formed in the second insulating film (29) to extend from the wiring trench (28a) to a non-forming region of the first wiring, and a second wiring (39) buried in the connection holes (38a) and the wiring trench (28a) to be connected electrically to the first wiring (36) and also buried in the dummy connection holes (38b), and formed such that a surface of the second wiring (39) and a surface of the second insulating film (29) constitute a substantially flat surface.
Abstract:
A main wall part is provided so as to surround an integrated circuit part. A sub-wall part which is in "L" shape is provided between each corner of the main wall part and the integrated circuit part. Therefore, even if the stress is concentrated due to heat treatment or the like, the stress is dispersed to the main wall part and the sub-wall part, and hence peeling between layers and a crack are unlikely to occur, as compared with the conventional art. Further, even if the crack and the like occur at the corner, moisture from the outside hardly reaches the integrated circuit part when the main wall part and the sub-wall part are coupled to each other. For this reason, it is possible to ensure an extremely high moisture resistance.
Abstract:
A method of processing a semiconductor substrate involves etching a SiOF layer with HF or HF + H 2 0. The method can be used to form hollow structures in semiconductor substrates and thus provides a way to make interlayer insulators.
Abstract:
The present invention relates to a manufacturing method of a semiconductor device in which a barrier insulating film and a main insulating film having low relative dielectric constant are sequentially formed while a wiring mainly consisting of copper film is coated. Its constitution includes the steps of: forming the barrier insulating film 35a on a substrate 21 subject to deposition, in which an electric power having a first frequency (f1) is applied to a first film forming gas containing at least silicon-containing gas and oxygen-containing gas to transform said first film forming gas into plasma and to cause reaction; and forming the main insulating film 35b having low relative dielectric constant on the barrier insulating film 35a, in which an electric power having a second frequency (f2) higher than the first frequency (f1) is applied to a second film forming gas containing at least the silicon-containing gas and the oxygen-containing gas to transform the second film forming gas into plasma and to cause reaction.
Abstract:
A main wall part is provided so as to surround an integrated circuit part. A sub-wall part which is in "L" shape is provided between each corner of the main wall part and the integrated circuit part. Therefore, even if the stress is concentrated due to heat treatment or the like, the stress is dispersed to the main wall part and the sub-wall part, and hence peeling between layers and a crack are unlikely to occur, as compared with the conventional art. Further, even if the crack and the like occur at the corner, moisture from the outside hardly reaches the integrated circuit part when the main wall part and the sub-wall part are coupled to each other. For this reason, it is possible to ensure an extremely high moisture resistance.
Abstract:
In forming a layer of a semiconductor wafer (100), a dielectric layer is deposited on the semiconductor wafer. The dielectric layer (208) includes material having a low dielectric constant. Recessed (210) and non-recessed (211) areas are formed in the dielectric layer. A metal layer is deposited on the dielectric layer to fill the recessed areas and cover the non-recessed areas. The metal layer is then electropolished to remove the metal layer covering the non-recessed areas while maintaining the metal layer in the recessed areas.
Abstract:
A semiconductor device using, e.g., a fluorine containing carbon film, as an interlayer dielectric film is produced by a dual damascene method which is a simple technique. After an dielectric film, e.g., an SiO 2 film 3, is deposited on a substrate 2, the SiO 2 film 3 is etched to form a via hole 31 therein, and then, a top dielectric film, e.g., a CF film 4, is deposited on the top face of the SiO 2 film 3. If the CF film is deposited by activating a thin-film deposition material having a bad embedded material, e.g., C 6 F 6 gas, as a plasma, the CF film 4 can be deposited on the top face of the SiO2 film 3 while inhibiting the CF film from being embedded into the via hole 31. Subsequently, by etching the CF film 4 to form a groove 41 therein, it is possible to easily produce a dual damascene shape wherein the groove 41 is integrated with the via hole 31.