Abstract:
A semiconductor manufacturing method has the steps of preparing an SOI substrate having a supporting substrate, an insulating film formed above the supporting substrate, a semiconductor region formed above the insulating film, and an intermediate layer formed between the supporting substrate and the insulating film, forming a semiconductor element in the semiconductor region, and removing the intermediate layer to separate the supporting substrate and the semiconductor region in which the semiconductor element is formed.
Abstract:
A semiconductor comprising a semiconductor device formed on a semiconductor substrate, an interlevel insulating film having holes and a ring-shaped groove in a circuit area formed on the semiconductor substrate and having the semiconductor element formed therein, the ring-shaped groove seamlessly surrounding an outer periphery of the circuit area, via plugs formed in the holes in the interlevel insulating film, a wiring connected to the plug electrodes and mainly comprising copper, and a via ring having a layer formed in the ring-shaped groove and mainly comprising aluminum, wherein no layer mainly comprising copper is formed in the via ring layer.
Abstract:
A semiconductor device includes at least first and second lower layer wirings provided on a surface of an insulator on a semiconductor substrate, a first interlayer film provided on the insulator to cover surfaces of the first and second lower layer wirings, first and second connection wirings which are provided on the first interlayer film and include first and second films contacting the first and second lower layer wirings respectively, and a plate electrode which is continuously provided on the second connection wiring and includes at least the first film.
Abstract:
A semiconductor device manufacturing method comprises a step of forming a trench to a first insulation film formed on a semiconductor substrate, and forming a lower level wiring in the trench, a step of forming at least one conductive layer on the semiconductor substrate to coat the lower level wiring, a step of forming at least one thin film layer on the conductive layer, a step of forming a hard mask by patterning the thin film, a step of etching the conductive layer by using the hard mask as an etching mask, and forming a conductive pillar-shaped structure, whose upper surface is covered with the hard mask, on the lower level wiring, a step of forming a second insulation film on the semiconductor substrate so that the pillar-shaped structure is buried, a step of forming a wiring trench in which at least the hard mask is exposed, and a step of burying a conductor into the wiring trench after the hard mask is removed, and forming an upper level wiring in the wiring trench.
Abstract:
A semiconductor device includes at least first and second lower layer wirings provided on a surface of an insulator on a semiconductor substrate, a first interlayer film provided on the insulator to cover surfaces of the first and second lower layer wirings, first and second connection wirings which are provided on the first interlayer film and include first and second films contacting the first and second lower layer wirings respectively, and a plate electrode which is continuously provided on the second connection wiring and includes at least the first film.