Abstract:
A configuration of a lateral transistor suited for the hybrid-integration (BiCMOS) of a high-performance lateral transistor (HCBT) and a CMOS transistor, and a method for manufacturing the lateral transistor are provided. A semiconductor device includes a HCBT 100 and a CMOS transistor 200 hybrid-integrated therein. The HCBT 100 has an open region 21 opened by etching a device isolating oxide film 6 surrounding an n-hill layer 11, an emitter electrode 31A and a collector electrode 31B each of which is formed in the open region 21 and is composed of a polysilicon film having such a thickness as to expose the n-hill layer 11 exposed by etching the device isolating oxide film, and an ultrathin oxide film 24 covering at least a part of the n-hill layer 11. The ultrathin oxide film 24 functions as a protective film for protecting the n-hill layer 11 from being etched when the polysilicon film is etched to form the emitter electrode 31A and the collector electrode 31B.
Abstract:
A configuration of a lateral transistor suited for the hybrid-integration (BiCMOS) of a high-performance lateral transistor (HCBT) and a CMOS transistor, and a method for manufacturing the lateral transistor are provided. A semiconductor device includes a HCBT 100 and a CMOS transistor 200 hybrid-integrated therein. The HCBT 100 has an open region 21 opened by etching a device isolating oxide film 6 surrounding an n-hill layer 11, an emitter electrode 31A and a collector electrode 31B each of which is formed in the open region 21 and is composed of a polysilicon film having such a thickness as to expose the n-hill layer 11 exposed by etching the device isolating oxide film, and an ultrathin oxide film 24 covering at least a part of the n-hill layer 11. The ultrathin oxide film 24 functions as a protective film for protecting the n-hill layer 11 from being etched when the polysilicon film is etched to form the emitter electrode 31A and the collector electrode 31B.
Abstract:
A semiconductor device in which a lateral bipolar transistor and a CMOS transistor are hybrid-integrated, and the lateral bipolar transistor includes an open region opened in a device isolating oxide film surrounding an active region; a polysilicon film formed on the open region; and a protective film covering at least a part of a peripheral surface of the active region exposed by opening the open region in the device isolating oxide film, wherein the polysilicon film has such a thickness as to expose the active region out of the polysilicon film, and the protective film is a film for preventing the active region from being etched when the polysilicon film is etched to the thickness.
Abstract:
An infrared sensor IC and an infrared sensor, which are extremely small and are not easily affected by electromagnetic noise and thermal fluctuation, and a manufacturing method thereof are provided. A compound semiconductor that has a small device resistance and a large electron mobility is used for a sensor (2), and then, the compound semiconductor sensor (2) and an integrated circuit (3), which processes an electrical signal output by the compound semiconductor sensor (2) and performs an operation, are arranged in a single package using hybrid formation. In this manner, an infrared sensor IC that can be operated at room temperature can be provided by a microminiature and simple package that is not conventionally produced.
Abstract:
Provided is a radio-frequency antenna with which the blocking or weakening of a radio-frequency induction electric field will not occur even if a thin-film material deposits on the antenna surface. A radio-frequency antenna 10 includes a linear antenna conductor 13, a dielectric protective pipe 14 provided around the antenna conductor 13, and a deposit shield 15 provided around the protective pipe 14, the deposit shield 15 covering at least one portion of the protective pipe 14 and having at least one opening 153 on any line extending along the length of the antenna conductor 13. Although the thin-film material adheres to the surfaces of the protective pipe and the deposit shield, the deposited substance has at least one discontinuous portion in the longitudinal direction of the antenna conductor. Therefore, in the case where the thin-film material is electrically conductive, the blocking of the radio-frequency induction electric field is prevented. In the case where the thin-film material is not electrically conductive, an attenuation in the intensity of the radio-frequency induction electric field is suppressed.
Abstract:
The present invention provides a plasma processing device which can generate plasma with a higher density than that in an external antenna type, and can prevent the impurities from being mixed into an object to be processed and can prevent particles from being generated, which are problems that occur in an internal antenna type. The plasma processing device according to the present invention has: a metallic vacuum chamber 11; an antenna-placing section 14 in which a radio-frequency antenna 18 is placed inside a through-hole (hollow space) provided in an upper wall 112 of the vacuum chamber 11; and a dielectric separating plate 15 covering the entire inner surface 1121 of the upper wall 112. In this plasma processing device, the entire inner surface 1121 side of the upper wall 112 is covered with the separating plate 15 so that surfaces in different level otherwise formed when a smaller separating plate is used is not formed between the inner surface 1121 and the separating plate 15. Therefore, the generation of particles caused by the formation of adhered materials on the surfaces in different level is prevented.
Abstract:
The present invention relates to a magnetic sensor with which magnetic characteristics are made extremely stable by consideration of an area of contact of a base layer of a magnetic substance and a semiconductor substrate. On a semiconductor substrate (111) a plurality of Hall elements (112a, 112b) are embedded so as to be coplanar to a top surface of the semiconductor substrate while being mutually spaced apart by a predetermined distance, and above the Hall elements and the semiconductor substrate, a base layer (114), having coefficient of thermal expansion differing from that of the Hall elements and partially covers a region of each Hall elements, is formed via a protective layer (113), and a magnetic flux concentrator (115), having an area larger than the base layer and with magnetic amplification, is formed on the base layer. An area of contact of the base layer of the magnetic substance and the semiconductor substrate is made small to lessen the generation of an offset voltage.