摘要:
In the semiconductor device which has partial trench isolation as isolation between elements formed in an SOI substrate, resistance reduction of the source drain of a transistor and reduction of leakage current are aimed at. A MOS transistor is formed in the active region specified by the isolation insulating layer in the SOI layer formed on the buried oxide film layer (BOX layer). An isolation insulating layer is a partial trench isolation which has not reached a BOX layer, and source and drain regions include the first and the second impurity ion which differs in a mass number mutually.
摘要:
In a PMOS transistor, the source-drain region is divided into four parts along the gate width and has an arrangement of four independent source regions and an arrangement of four independent drain regions. A partial trench isolation insulating film is arranged in contact with the whole of the opposed surfaces between the four source regions in such a manner that the channel region formed under the gate electrode is divided across the channel length. A body-tied region containing N-type impurities relatively high in concentration is arranged in contact with the side surface of the source region opposite to the gate electrode, and the potential of the body region is fixed through the well region from the body-tied region.
摘要:
In formation of a source/drain region of an NMOS transistor, a gate-directional extension region of an N+ block region in an N+ block resist film prevents a well region located under the gate-directional extension region from implantation of an N-type impurity. A high resistance forming region, which is the well region having a possibility for implantation of an N-type impurity on a longitudinal extension of a gate electrode , can be formed as a high resistance forming region narrower than a conventional high resistance forming region . Thus, a semiconductor device having a partially isolated body fixed SOI structure capable of reducing body resistance and a method of manufacturing the same are obtained.
摘要:
In formation of a source/drain region of an NMOS transistor, a gate-directional extension region of an N+ block region in an N+ block resist film prevents a well region located under the gate-directional extension region from implantation of an N-type impurity. A high resistance forming region, which is the well region having a possibility for implantation of an N-type impurity on a longitudinal extension of a gate electrode , can be formed as a high resistance forming region narrower than a conventional high resistance forming region . Thus, a semiconductor device having a partially isolated body fixed SOI structure capable of reducing body resistance and a method of manufacturing the same are obtained.
摘要:
The present invention realizes the miniaturization of a semiconductor device. On a first insulation film, an island-like semiconductor layer and a second insulation film which surrounds the semiconductor layer are formed, and resistance elements (for example, poly-silicon resistance elements) which are formed of a conductive film are arranged to be overlapped to an upper surface of the semiconductor layer in plane.
摘要:
Plural trench isolation films are provided with portions of an SOI layer interposed therebetween in a surface of the SOI layer in a resistor region (RR) where a spiral inductor (SI) is to be provided. Resistive element are formed on the trench isolation films, respectively. Each of the trench isolation films includes a central portion which passes through the SOI layer and reaches a buried oxide film to include a full-trench isolation structure, and opposite side portions each of which passes through only a portion of the SOI layer and is located on the SOI layer to include a partial-trench isolation structure. Thus, each of the trench isolation films includes a hybrid-trench isolation structure.
摘要:
Provided are a thin-film transistor formed by connecting polysilicon layers having different conductivity types with each other which prevents occurrence of inconvenience resulting from diffusion of impurities and a method of fabricating the same. A drain (6), a channel (7) and a source (8) are integrally formed on a surface of a second oxide film (4) by polysilicon. The drain (6) is formed to be connected with a pad layer (3) (second polycrystalline semiconductor layer) through a contact hole (5) which is formed to reach an upper surface of the pad layer (3). The pad layer (3) positioned on a bottom portion of the contact hole (5) (opening) is provided with a boron implantation region BR.
摘要:
In the semiconductor device which has partial trench isolation as isolation between elements formed in an SOI substrate, resistance reduction of the source drain of a transistor and reduction of leakage current are aimed at. A MOS transistor is formed in the active region specified by the isolation insulating layer in the SOI layer formed on the buried oxide film layer (BOX layer). An isolation insulating layer is a partial trench isolation which has not reached a BOX layer, and source and drain regions include the first and the second impurity ion which differs in a mass number mutually.
摘要:
Formed on an insulator (9) are an N− type semiconductor layer (10) having a partial isolator formed on its surface and a P− type semiconductor layer (20) having a partial isolator formed on its surface. Source/drain (11, 12) being P+ type semiconductor layers are provided on the semiconductor layer (10) to form a PMOS transistor (1). Source/drain (21, 22) being N+ type semiconductor layers are provided on the semiconductor layer (20) to form an NMOS transistor (2). A pn junction (J5) formed by the semiconductor layers (10, 20) is provided in a CMOS transistor (100) made up of the transistors (1, 2). The pn junction (J5) is positioned separately from the partial isolators (41, 42), where the crystal defect is thus very small. Therefore, the leakage current is very low at the pn junction (J5).
摘要:
Provided are a thin-film transistor formed by connecting polysilicon layers having different conductivity types with each other which prevents occurrence of inconvenience resulting from diffusion of impurities and a method of fabricating the same. A drain (6), a channel (7) and a source (8) are integrally formed on a surface of a second oxide film (4) by polysilicon. The drain (6) is formed to be connected with a pad layer (3) (second polycrystalline semiconductor layer) through a contact hole (5) which is formed to reach an upper surface of the pad layer (3). The pad layer (3) positioned on a bottom portion of the contact hole (5) (opening) is provided with a boron implantation region BR.