摘要:
A method of manufacturing a semiconductor device, comprising the steps of sequentially forming a buried region and an epitaxial layer on a major surface of a semiconductor substrate, forming a conductive layer along an annular trench extending to the buried region, filling the annular trench with an insulating material and forming a functional element in said epitaxial layer surrounded by said buried region and said insulating material within said annular trench. In this method, the step of forming the conductive layer along the annular trench is carried out by the steps of forming an annular trench extending through said buried region, and depositing a conductive layer on only a side wall surface of said annular trench.
摘要:
In a method of manufacturing a semiconductor device according to the present invention, a given position of a thermal oxide film formed on a monocrystalline silicon layer is opened to expose a surface of the monocrystalline silicon layer to serve as a getter site, a polycrystalline silicon layer is deposited on the thermal oxide film and the surface of the monocrystalline silicon layer, and the polycrystalline silicon layer is oxidized to convert the surface of the monocrystalline silicon layer directly contacting the polycrystalline silicon layer into an oxide film by thermal oxidation. That is, the position of interface between the oxide film and the monocrystalline silicon layer is shifted into the original monocrystalline silicon layer. During thermal oxidation of the polycrystalline silicon layer, a plurality of crystal defects to serve as getter sites are generated deeper than those generated by a conventional implagetter method in the monocrystalline silicon layer. In addition, the crystal defects generated in the manner described above do not extend to the surrounding region by subsequent annealing so that a region of the crystal defects is limited.
摘要:
A semiconductor device has a passivation layer including a polyimide film. Argon ions are implanted in the polyimide film to convert it into an electrically stable insulating film.
摘要:
A transistor is formed according to the solid phase epitaxial growth which is one of the semiconductor integrated circuit device manufacturing techniques. A low-concentration impurity region is formed by selective solid phase epitaxial growth instead of using an epitaxial substrate. The solid phase epitaxial growth is performed twice, when a collector region is formed and when a base region is formed. The depth of collector and base regions are determined by the thickness of the solid phase growth layers, respectively.
摘要:
This invention discloses a method of manufacturing an SST bipolar transistor, and the manufacturing method is capable of defining the size of a base region of the SST bipolar transistor. An insulating film and a spacer film serving as a spacer are sequentially formed in a bipolar transistor forming region on the main surface of a semiconductor substrate. Thereafter, the spacer film is patterned into a spacer film pattern for defining the size of the base region. A second insulating film, a base electrode pattern and a third insulating film are sequentially formed on the spacer film pattern. A first opening which reaches the spacer film pattern through the second insulating film, the base electrode pattern and the third insulating film is formed. The spacer film pattern is etched from the first opening to form a second opening having a diameter larger than that of the first opening. The insulating film exposed in the second opening is etched. The size of the base region on the major surface of the semiconductor substrate is defined by the size of the second opening.
摘要:
According to the method of manufacturing a semiconductor device of the present invention, an insulation film is formed on a silicon substrate, and a resist film having a predetermined pattern is formed on the insulation film, followed by forming an opening on the insulation film with the resist film performing as a mask. Then, an impurity having conductivity are implanted into said silicon substrate with the resist film performing as a mask and silicon ions are implanted into the silicon substrate with the resist film performing as a mask. After that, the resist film is removed. Further, a refractory metal film which covers at least the opening is formed. Moveover, a diffusion layer which causes electrical activation of the impurity having conductivity is formed by annealing, followed by formation a silicide layer at where the surfaces of the silicon substrate and the metal film meet.
摘要:
A metal layer is formed by selective CVD method on an emitter region formed by using a field oxide film as a mask. Opening for ion-implanting an impurity for forming external base region is formed in the field oxide film by utilizing the metal layer and a metal layer creep up a bird's beak of the field oxide film as masks. An impurity is doped in a semiconductor substrate through the opening formed in the field oxide film to form external base region. The distance between the emitter region and external base region is controlled by a length of the metal layer creep up the bird's beak.
摘要:
Disclosed is a method of producing a semiconductor device, comprising the steps of (a) forming a first insulating layer consisting of a lower silicon oxide film and an upper slicon nitride film on the surface of a semiconductor substrate, (b) forming a second insulating layer consisting of silicon oxide on the first insulating layer, (c) forming a third insulating layer consisting of silicon nitride on the second insulating layer, (d) selectively removing the third insulating layer so as to form a mask used for forming a hole for an interconnection electrode, (e) etching away the exposed portion of the second insulating layer by using the mask so as to form the hole for the interconnection electrode, (f) forming a conductive material layer on the entire surface of the structure obtained by step (e), a contact hole formed in the first insulating layer after step (a) or (e) being filled with the conductive material so as to allow the conductive material layer disposed on the first insulating layer to be connected to the semiconductor substrate, and (g) removing the second insulating layer by etching so as to lift-off the third insulating layer and the conductive material layer laminated on the second insulating layer, the remaining conductive materal layer providing the interconnection electrode.
摘要:
A method for manufacturing a semiconductor device of mesa type comprises forming mesa recesses of predetermined depth around an element in the surface of a semiconductor body, forming on the back of semiconductor body a film for lessening the concentration of stress, filling glass powder into mesa recesses, and sintering glass powder to form glass insulators. According to the method of the present invention, cracks can be prevented from being caused in the semiconductor body and glass insulators formed in mesa recesses.
摘要:
A wiring material of a semiconductor device, which comprises aluminum as a major component and at least a surface layer of the wiring layer is alloyed with boron and silicon. A method for forming a wiring material of a semiconductor device, which comprises the steps of: forming a wiring pattern comprising aluminum as a major component on a semiconductor element; and ion-implanting one of boron and a mixture of boron and silicon in the wiring pattern and alloying at least a surface layer of the wiring pattern to form an alloy layer containing aluminum, boron and silicon.