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.
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:
A thin-film formation sputtering device capable of forming a high-quality thin film at high rates is provided. A sputtering device 10 includes a target holder 14 provided in a vacuum container 11, a substrate holder 15 facing the target holder 14, a means 19 for introducing a plasma generation gas into the vacuum container 11, a means 161 for generating an electric field for sputtering in a region including a surface of a target T, an antenna placement room 182 provided between inner and outer surfaces of a wall of the vacuum container as well as separated from an inner space of the vacuum container by a dielectric window 183, and a radio-frequency antenna 13, which is provided in the antenna placement room 182, for generating a radio-frequency induction electric field in the region including the surface of the target held by the target holder.
Abstract:
Even if a measurement data group is not a measurement data group that is obtained in a space where the magnitude of a vector physical quantity to be measured is uniform, an offset with high reliability is estimated. The reliability of the estimated offset is further improved. A vector physical quantity comprised of a plurality of components is repeatedly detected and vector physical quantity data group is obtained, and a difference vector group is calculated from the obtained vector physical quantity data group. A reference point included in the vector physical quantity data group is estimated based on a predetermined evaluation formula using the calculated difference vector group. Whether the calculated difference vector group is suitable for the estimation of the reference point is determined. Only a predetermined difference vector group is output for the estimation of the reference point based on the determination result. Moreover, the degree of reliability of the estimated reference point contains the difference vector group, and only a predetermined reference point is output as an offset based on the determination result.
Abstract:
Provided is a transconductance amplifier capable of suppressing a change caused by a large tuning voltage Vctrl in a range where the relationship between an input voltage and an output current is linear and adjusting the transconductance in a wider operation input range. The transconductance amplifier includes a differential pair formed by MOS transistors (111, 112) having a source grounded; MOS transistors (113, 114); amplifiers (106, 107); a voltage generating circuit (100); and a differential pair input voltage generating circuit (120). By adjusting the input differential common voltage Vcm of a full differential signal inputted to the differential pair in accordance with the change of the tuning voltage Vctrl controlling the transconductance so that a difference between Vcm and Vctr is constant, it is possible to maintain a constant range where the transconductance amplifier can obtain preferable linearity.
Abstract:
The present invention provides a plasma processing device capable of inducing a strong radio-frequency electric field within a vacuum container while preventing sputtering of the antenna conductor, an increase in the temperature of the antenna conductor and the formation of particles. A plasma processing device 10 according to the present invention includes a vacuum containem11, a radio-frequency antenna 21 placed between an inner surface 111A and an outer surface 111B of a wall of the vacuum container 11, and a dielectric separating member 16 for separating the radio-frequency antenna 21 from an internal space of the vacuum container 11. As compared to a device using an external antenna, the present device can induce a stronger magnetic field in the vacuum container 11. The separating member 16 has the effects of preventing the radio-frequency antenna 21 from undergoing sputtering by the plasma produced in the vacuum container 11, suppressing an increase in the temperature of the radio-frequency antenna 21, and preventing the formation of particles.
Abstract:
A waveform of the output signal having high reproducibility to an input signal is outputted from capacitive load. Even the driving device is configured as a switching amplifier and drives capacitive load. Reactive power can be reduced to perform low power consumption. Output signals V1a and V1b that an output signal Vcap1 across output terminals 50 and 51 of load C1 fed back to input terminals 9a and 9b are compared with an input signal Vin so that error between output signals V1a and V1b is detected. A first error suppression signal Vout1 is produced so as to suppress the detected error between signals. The proportion of a first duration T1 that electric power is supplied to the load C1 to a second duration T2 that no electric power is supplied and load C1 is floated is altered according to the first error suppression signal.
Abstract:
A hybrid electrolyte which is prepared by impregnating a molded high polymer porous body composed of a high polymer base material containing a cross-linked high polymer segment and a plurality of bubbles dispersed in the base material with an electrolytic solution until the porous body swells, with the high polymer base material having 20-75 gel %, a method for manufacturing the electrolyte, and a method for manufacturing an electrochemical element using the electrolyte. The hybrid electrolyte has high ionic conductivity and excellent high-temperature stability and exhibits a high adhesive property when the electrolyte is stuck to an electrode. In addition, when the method for manufacturing hybrid electrolyte is used, the hybrid electrolyte having the above-mentioned excellent properties and an electrochemical element using the hybrid electrolyte can be manufactured surely and efficiently.