Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Ekc Technology Kabushiki Kaisha

Hiroshi Kobayashi

Yuji Kawano

Taisuke Furukawa

Yoshinori Tatenuma

Takeharu Kuroiwa

Kazuhiko Tsutsumi

Masahiro Yokotani

Tatsuya Fukami

Motohisa Taguchi

Takashi Takenaga

Kazuyasu Nishikawa

Shinji Tanabe

Hideki Shimauchi

Manabu Tsukamoto

Shinnosuke Soda

Hiroshi Shibata

Yoshinori Yokoyama

Shigeki Tsujii

Sadeh Beysen

Mitsuhiro Ono

Kazunori Inoue

Koichi Akiyama

Jun Fujita

Toshiaki Shinohara

Takashi Tokunaga

Hiroshi Yamamoto

Yasushi Nakayama

Yoshiyuki Nakaki

Hiroshi Fujita

Yoshio Fujii

Yukari Toide

Kazuo Hashima

Akihisa Fukumoto

Akiyoshi Kudo

Yuzo Ohdoi

Takanori Matsumoto

Hideo Kimura

Yuzou Ohdoi

Hidenori Matano

Provided is a semiconductor device free from chipping of a thin semiconductor element during transportation. The semiconductor device includes: a thin semiconductor element including a front-side electrode on the front side of the semiconductor element, and including a back-side electrode on the back side of the semiconductor element; a metallic member formed on at least one of the front-side electrode and the back-side electrode, the metallic member having a thickness equal to or greater than the thickness of the semiconductor element; and a resin member in contact with the lateral side of the metallic member and surrounding the periphery of the metallic member, with a part of the front side of the semiconductor element being exposed.

Semiconductor device, method for manufacturing the same, and semiconductor module

A semiconductor module is obtained in which breakage of the semiconductor module can be detected in advance while suppressing increase in manufacturing cost. A semiconductor module includes a semiconductor element, a circuit board, a resistor, a first wiring member, and a detector. The circuit board includes a circuit pattern. The resistor is connected to a surface of the circuit pattern. The first wiring member directly connects the resistor to the semiconductor element. In the first wiring member, at least part of current flowing from the semiconductor element to the circuit pattern flows. The detector is configured to detect at least one of a change of a voltage drop value in the resistor and a change of a current value in the resistor.

Semiconductor module

A power module includes a first power semiconductor device including a first electrode, a resin frame including first receiving portions, and a first leadframe. The first leadframe has a first main surface facing the first electrode and is electrically and mechanically connected to the first electrode. The first receiving portions face the first main surface of the first leadframe and receive part of the first leadframe. Thus, the power module has high reliability and can be miniaturized.

Power module and method of manufacturing the same, and power electronic apparatus and method of manufacturing the same

A power semiconductor device having a high degree of reliability even when an operable temperature of a power semiconductor element is sufficiently increased. The power semiconductor device includes: a power semiconductor element including an electrode formed on a first surface; a first stress mitigation portion connected to the electrode with a first bonding portion being interposed; and a wiring portion electrically connected to the first stress mitigation portion with a second bonding portion being interposed. A bonding strength of the first bonding portion is higher than a bonding strength of the second bonding portion.

Power semiconductor device

A distortion of a signal of a magnetic position detection device is reduced so that precise position information at a high degree of accuracy can be obtained. The magnetic position detection deviceincludes a magnetic movable body, a bridge circuit, a correction circuit, and a detection circuit. The magnetic movable bodyis magnetized so that N-poles and S-poles alternately appear and has a region in which distances between the N-poles and the S-poles are constant. The bridge circuitis formed of first, second, third, and fourth field detection portionsRRR, andR. The correction circuitis formed of fifth and sixth field detection portionsRandR. The detection circuitdetects a position of the magnetic movable bodyon the basis of a differential output Vout of the bridge circuit.

Magnetic position detection device

A sensor device includes a detector portion, plural metal terminals that transmit a detection signal from the detector portion, and a housing portion, which integrally supports the detector portion and metal terminals, formed from resin, leading end portions of the plural metal terminals configuring connector terminals, and the plural metal terminals being disposed with at least one portion thereof aligned when seen from the axial direction of the connector terminals, wherein protruding portions protruding in a direction differing from the axial direction of the connector terminals are provided on the metal terminals.

Sensor device

A magnetic position detection apparatus includes a substrate, a magnet, a bridge circuit including first through fourth magneto-electric converting elements formed on the substrate, and a detection circuit. A substrate surface is substantially perpendicular to a magnet magnetization direction. The second and third magneto-electric converting elements are, when viewed along the magnet magnetization direction, disposed to be on or in the vicinity of a straight line passing through a center point of a magnetic pole of the magnet and parallel to a straight line perpendicular to both the magnet magnetization direction and the magnetic mobile object. The first and fourth magneto-electric converting elements are disposed so that, when not opposed to the magnetic mobile object, a component of a substrate of a magnetic field to be applied thereto is substantially same as that of a magnetic field to be applied to the second and third magneto-electric converting elements.

Magnetic position detection apparatus

A magnetic detection apparatus comprises: a magnetic detection section which is obtained by pressing a base including a magnetic detection device, and magnetic field generation means fixed to the base, into a cap so as to integrate the base, the magnetic field generation means, and the cap; and a secondary molding section including an attachment section for attaching the magnetic detection section, and a connector section for extracting a signal detected by the magnetic detection section.

Magnetic detection apparatus

A magnetic position detecting device includes a magnet; first to fourth magnetoelectric conversion elements formed on a virtual plane; and a flux guide made of a magnetic material. The flux guide includes first and second protrusions provided at a distance from each other in a direction parallel to the virtual plane. A specific portion recessed in a concave shape is provided in the flux guide in a mid-portion between the first and second protrusions. The first and fourth magnetoelectric conversion elements are provided approximately in the mid-portion between the first and second protrusions. The second magnetoelectric conversion element is provided between the first protrusion and the mid-portion.

Magnetic position detecting device

A magnetic detection apparatus includes a first comparison circuit that waveform-shapes the amplitude of a detection signal from magneto-electric transducers by DC coupling, a third comparison circuit that waveform-shapes the detection signal by AC coupling, an oscillation circuit having a natural frequency, a control circuit that counts the output of the first comparison circuit by using the oscillation means, and a selection circuit that selects the output of the first comparison means and the output of the second comparison means. The control circuit counts rising from the next rising or falling from the next falling of an output rectangular wave of the first comparison circuit, and provides output to the selection circuit at the time point at which the count value reaches a desired value. The selection circuit selects and outputs the output rectangular wave of the first comparison circuit or the third comparison circuit.

A magnetic detection device includes a signal processing circuit that detects a moving position and a moving direction of a magnetic mobile object using an output of a comparing circuit configured to output a signal by comparing an output signal of a magneto-electric transducer element with a threshold. A duration during which an output of the signal processing circuit is in a high level or in a low level is fixed to a period tor a period tdepending on the moving direction of the magnetic mobile object. When switching of the moving direction of the magnetic mobile object takes place within the period tor the period t, the signal processing circuit outputs a position signal same as a position signal indicating a position immediately before the switching of the moving direction of the magnetic mobile object due to hysteresis of the threshold of the comparing circuit.

Magnetic detection device

Provided is an apparatus for detecting a moving direction that can accurately detect the position, regardless of the moving direction. The moving direction detector includes groups of sensor elements that face a moving body to output detection signals in accordance with travel of the moving body. The detector includes signal processing units that convert output signals of the groups of sensor elements into rectangular waves and a moving direction detection unit that outputs a signal corresponding to a moving direction of the moving body based on the detection signals from the groups of sensor elements. The moving direction detection unit includes a delay function of generating an output signal at a time instant that is delayed by a predetermined time from a time instant when a moving direction of the moving body is changed.

Moving direction detector

In a magnetic detection apparatus, a magnetic detection sensor generates a sensor output signal whose high level and low level have different potentials in accordance with the moving direction of a magnetic moving object, and a computer unit includes three comparator circuits and detects the output signal of the magnetic detection sensor with three levels of comparison threshold values, so that the moving direction of the magnetic moving object can be detected accurately without any delay.

A magnetic field detector having a reference magnetoresistive element and a magnetic field detecting magnetoresistive element. The reference magnetoresistive element and the magnetic field detecting magnetoresistive element each has a stack structure including an antiferromagnetic layer, a fixed layer of a ferromagnetic material with the direction of magnetization fixed by the antiferromagnetic layer, a nonmagnetic layer, and a free layer of a ferromagnetic material with the direction of magnetization adapted to be changed by an external magnetic field. The reference magnetoresistive element is such that the direction of magnetization of the fixed layer and the direction of magnetization of the free layer in the nonmagnetic field are parallel or antiparallel to each other, and the magnetic field detecting magnetoresistive element is such that the direction of magnetization of the fixed layer and the direction of magnetization of the free layer in the nonmagnetic field are different from each other. Thus, it is possible to provide a magnetic field detector capable of singly calibrating the sensitivity and the resolution of the detector whenever required.

Growing community of inventors

Chiyoda-ku, Japan

Hiroshi Kobayashi