Abstract: A semiconductor device includes a first electrode, a second electrode, a first semiconductor layer of a first conductivity type, a second semiconductor layer of a second conductivity type; a third semiconductor layer of the first conductivity type; a first active region; and a third electrode. The first semiconductor layer is located between the first electrode and the second electrode. The second semiconductor layer is located above the first semiconductor layer. The first active region is next to the second semiconductor layer in a second direction. The first active region includes a first upper portion and a first upper portion. An average value of a width in the second direction of the first lower portion is greater than an average value of a width in the second direction of the first upper portion. The third semiconductor layer is electrically connected with the second electrode.

Abstract: A semiconductor device includes a first electrode, a second electrode, a first semiconductor layer of a first conductivity type, a second semiconductor layer of a second conductivity type; a third semiconductor layer of the first conductivity type; a first active region; and a third electrode. The first semiconductor layer is located between the first electrode and the second electrode. The second semiconductor layer is located above the first semiconductor layer. The first active region is next to the second semiconductor layer in a second direction. The first active region includes a first upper portion and a first upper portion. An average value of a width in the second direction of the first lower portion is greater than an average value of a width in the second direction of the first upper portion. The third semiconductor layer is electrically connected with the second electrode.

Abstract: A start control device is a start control device that controls start of a vehicle including a clutch that is engaged by the hydraulic pressure supplied from a hydraulic pressure supply source and a start device that starts a vehicle driving source, and includes: a hydraulic pressure control unit that controls so that the hydraulic pressure supply source supplies the hydraulic pressure to the clutch if a start condition for the vehicle is satisfied; and a start device control unit that controls the start device so that the rotation speed of the vehicle driving source reaches the predetermined rotation speed after the clutch is engaged.

Abstract: A start control device is a start control device that controls start of a vehicle including a clutch that is engaged by the hydraulic pressure supplied from a hydraulic pressure supply source and a start device that starts a vehicle driving source, and includes: a hydraulic pressure control unit that controls so that the hydraulic pressure supply source supplies the hydraulic pressure to the clutch if a start condition for the vehicle is satisfied; and a start device control unit that controls the start device so that the rotation speed of the vehicle driving source reaches the predetermined rotation speed after the clutch is engaged.

Abstract: A semiconductor module includes a metal substrate having a mounting surface, a first conductive plate on the mounting surface, an insulating substrate on the first conductive plate, a second conductive plate on the insulating substrate, a conductive pad on the insulating substrate, a semiconductor element on the second conductive plate, a circuit board electrically connected to the conductive pad, a resin case connected to the metal substrate and extending along at least a portion thereof, and around the first conductive plate, the insulating substrate, the second conductive plate, the conductive pad, the semiconductor element, and the circuit board, and a silicone gel in a region bounded by the metal substrate and the resin case. The circuit board comprises a plurality of planar surfaces oriented perpendicular to the mounting surface of the metal substrate.

Abstract: A semiconductor module includes a metal substrate having a mounting surface, a first conductive plate on the mounting surface, an insulating substrate on the first conductive plate, a second conductive plate on the insulating substrate, a conductive pad on the insulating substrate, a semiconductor element on the second conductive plate, a circuit board electrically connected to the conductive pad, a resin case connected to the metal substrate and extending along at least a portion thereof, and around the first conductive plate, the insulating substrate, the second conductive plate, the conductive pad, the semiconductor element, and the circuit board, and a silicone gel in a region bounded by the metal substrate and the resin case. The circuit board comprises a plurality of planar surfaces oriented perpendicular to the mounting surface of the metal substrate.

Abstract: A semiconductor device according to embodiments includes: a semiconductor substrate including; a first semiconductor layer of a first conductivity type; a second semiconductor layer of a second conductivity type above the first semiconductor layer; a third semiconductor layer above the second semiconductor layer; a plurality of gate layers arranged inside the semiconductor substrate, the gate layers extending in a first direction and being arranged in line in a second direction orthogonal to the first direction; a plurality of first semiconductor regions of the second conductivity type arranged on the third semiconductor layer between a first gate layer and a second gate layer of the gate layers, the first and second gate layers being adjacent to each other; a gate insulating film having a larger film thickness at a region excluding the first semiconductor regions than at the first semiconductor regions; an emitter electrode; and a collector.

Abstract: A semiconductor device according to embodiments includes a semiconductor substrate, first semiconductor layers of a first conductive type provided on a surface of the semiconductor substrate, extend in a first direction, and are surrounded by a gate layer, second semiconductor layers of the first conductive type provided between the first semiconductor layers, a third semiconductor layer of the first conductive type provided at ends of the first direction of the first semiconductor layers and is surrounded by the gate layer, a fourth semiconductor layer of a second conductive type provided in the semiconductor substrate, a sixth semiconductor layer of the first conductive type provided on a back surface of the semiconductor substrate, a seventh semiconductor layer of the second conductive type provided between the sixth semiconductor layer and the first semiconductor layers, an emitter electrode, and a collector electrode.

Abstract: A semiconductor device according to embodiments includes a semiconductor substrate, first semiconductor layers of a first conductive type provided on a surface of the semiconductor substrate, extend in a first direction, and are surrounded by a gate layer, second semiconductor layers of the first conductive type provided between the first semiconductor layers, a third semiconductor layer of the first conductive type provided at ends of the first direction of the first semiconductor layers and is surrounded by the gate layer, a fourth semiconductor layer of a second conductive type provided in the semiconductor substrate, a sixth semiconductor layer of the first conductive type provided on a back surface of the semiconductor substrate, a seventh semiconductor layer of the second conductive type provided between the sixth semiconductor layer and the first semiconductor layers, an emitter electrode, and a collector electrode.

Abstract: A semiconductor device includes a semiconductor element in a frame body. The semiconductor element includes a first electrode electrically connected to an electrode block provided on a first side of the semiconductor element. A connection element, which in some embodiments may be a portion of the electrode block, connects the electrode block to the frame body. The semiconductor element is sealed within an enclosure formed at least in part by the frame body, the connection element, and the electrode block. The connection element includes a fragile portion which has a resistance to increases in pressure or temperature that is less than other portions of the connection element. That is, in general, the fragile portion will fail before other portions of the connection element when pressure or temperature increases, which may occur when, for example, the semiconductor element breaks down.

Abstract: A semiconductor device includes a semiconductor element in a frame body. The semiconductor element includes a first electrode electrically connected to an electrode block provided on a first side of the semiconductor element. A connection element, which in some embodiments may be a portion of the electrode block, connects the electrode block to the frame body. The semiconductor element is sealed within an enclosure formed at least in part by the frame body, the connection element, and the electrode block. The connection element includes a fragile portion which has a resistance to increases in pressure or temperature that is less than other portions of the connection element. That is, in general, the fragile portion will fail before other portions of the connection element when pressure or temperature increases, which may occur when, for example, the semiconductor element breaks down.

Abstract: A power semiconductor device includes a p-type collector layer, an n-type base layer, a p-type base layer, an n-type source layer, and a gate electrode. The gate electrode is formed in a trench running from a surface of the n-type source layer through the n-type source layer and the p-type base layer to an interior of the n-type base layer via a gate insulating film. The gate electrode includes a first portion and a second portion. The first portion is opposed to a bottom end portion of the p-type base layer. The second portion is opposed to an upper end portion of the p-type base layer. The gate electrode is formed such that a threshold at the bottom end portion of the p-type base layer is not less than a threshold at the upper end portion of the p-type base layer.

Abstract: A semiconductor device includes: a first semiconductor region; a second semiconductor region provided on a first major surface of the first semiconductor region; a first major electrode; a third semiconductor region provided in a part of a third major surface of the second semiconductor region; a fourth semiconductor region provided in a part of a fourth major surface of the third semiconductor region; a second major electrode; a control electrode; a fifth semiconductor region; and a sixth semiconductor. The fifth semiconductor region is provided passing through the fourth semiconductor region along a direction perpendicular to the fourth major surface of the third semiconductor region. The sixth semiconductor region is provided in contact with a bottom part of the fourth semiconductor region, and has a higher impurity concentration than the third semiconductor region.

Abstract: According to one embodiment, a semiconductor device includes a first semiconductor layer of a first conductivity type, a first semiconductor region of a second conductivity type, a second semiconductor region of the first conductivity type, a third semiconductor region of the first conductivity type, a fourth semiconductor region of the second conductivity type, and a control electrode. The first semiconductor region is provided selectively on a first major surface of the first semiconductor layer. The second semiconductor region is provided selectively on the first major surface in contact with the first semiconductor region. The third semiconductor region is provided selectively on a surface of the first semiconductor region. The fourth semiconductor region is provided to face a projecting surface between a side surface and a bottom surface of the first semiconductor region with the second semiconductor region interposed.

Abstract: According to an aspect of the present invention, there is provided a semiconductor device including a lead frame, a semiconductor chip, a back surface opposed to a main surface of the semiconductor chip disposed on the lead frame, a first electrode formed on the main surface of the semiconductor chip, the first electrode being composed of Al as a main component, a wiring, one end portion of the wiring being connected to the first electrode, and the other end portion of the wiring being connected to a lead terminal of the lead frame, a second electrode formed on the first electrode, the second electrode selectively formed except an area at least connected the one end portion of the wiring, and being composed of Cu as a main component.

Abstract: In a current detecting cell of a MOS-type semiconductor device with a current detection function, the area of the contact portions of source regions which contact a current detecting electrode is greater than that of that contact portion of a base region which contacts the current detecting electrode. With this feature, a parasitic resistance does no sharply decrease even if a detected voltage increases, and therefore, current can be detected accurately.