摘要:
A semiconductor device in which an element region including at least an IGBT region is formed on a semiconductor substrate is presented. The IGBT region including: a collector layer; a drift layer; a body layer; a gate electrode placed inside a trench extending from the front surface of the semiconductor substrate to the drift layer; an emitter layer; and a contact layer having a higher impurity concentration than the body layer. In the semiconductor device, assuming that an x direction is a direction in which the trench extends along the front surface of the semiconductor substrate and that a y direction is a direction orthogonal to the x direction along the front surface of the semiconductor substrate, a distance from the contact layer to the emitter layer in the x direction is larger than a distance from the contact layer to the trench in the y direction.
摘要:
When a semiconductor substrate of a semiconductor device is viewed from above, an isolation region, an IGBT region, and a diode region are all formed adjacent to each other. A deep region that is connected to a body region and an anode region is formed in the isolation region. A drift region is formed extending across the isolation region, the IGBT region, and the diode region, inside the semiconductor substrate. A collector region that extends across the isolation region, the IGBT region and the diode region, and a cathode region positioned in the diode region, are formed in a region exposed on a lower surface of the semiconductor substrate. A boundary between the collector region and the cathode region is in the diode region, in a cross-section that cuts across a boundary between the isolation region and the diode region, and divides the isolation region and the diode region. The collector region formed in the isolation region has a higher dopant impurity concentration than the collector region in the IGBT region.
摘要:
An overhead scanner includes a main body, a rotation unit supported by the main body and being rotatable around a rotation axis, an imaging unit mounted on the rotation unit and is configured to read a medium placed on a placement surface below the rotation unit, a light source that irradiates the medium with light, a driving unit that moves the rotation unit around the rotation axis toward a placement side, where the medium is placed, and a posture change detecting unit that detects posture change of the main body. When it is determined that the main body falls down based on the posture change detected, while the rotation unit is located at a readable position for reading the medium, the driving unit moves the rotation unit toward the standby position where the rotation unit is located when the imaging unit does not read the medium.
摘要:
A semiconductor device has: a semiconductor substrate; and an upper surface electrode laminated on an upper surface of the semiconductor substrate, wherein at least one portion of the upper surface electrode includes a first layer formed on an upper surface side of the semiconductor substrate, a second layer formed on an upper surface side of the first layer, a third layer in contact with the upper surface of the second layer, and a fourth layer formed on an upper surface side of the third layer. The first layer is a barrier metal layer. The second layer is an Al (aluminum) layer. The third layer is one of an Al—Si (aluminum-silicon alloy) layer, an Al—Cu (aluminum-copper alloy) layer and an Al—Si—Cu (aluminum-silicon-copper alloy) layer. The fourth layer is a solder joint layer.
摘要:
A vehicle includes a battery as a power storage device that can be charged and discharged, a booster unit, an inverter, and a motor generator operating as a vehicle driving unit receiving electric power supply from the battery to drive the vehicle, a coupling unit coupling the vehicle with an external power supply for charging the battery from the outside of the vehicle, and a control device performing control related to the battery. The control device determines whether or not a destination is a charging-available place where the battery can be charged from the outside of the vehicle, and if the destination is a charging-available place, performs control related to the battery so that the temperature of the battery is a charging-efficient temperature on arrival at the destination.
摘要:
A plurality of moving-amount detecting units respectively detects a moving amount of the sheet fed by a feeding unit at a plurality of points in a width direction of the sheet. A skew detecting unit detects a skew of the sheet based on the moving amount of the sheet detected by the moving-amount detecting units.
摘要:
A ball bearing comprises an inner ring, an outer ring and a plurality of balls disposed between inner and outer rings. The number of the balls is made to be not smaller than 10. Lubricant is also enclosed between the inner and outer rings in such a manner that the amount of the lubricant is regulated not more than 8% of the volume of a space between the inner and outer rings.
摘要:
A rolling bearing having a plurality of rolling elements interposed between an inner race and an outer race, wherein the number of the rolling elements is selected to be equal to a number having, as divisors, main low-frequency peak components of geometrical error of the inner and outer races to be assembled.
摘要:
When a semiconductor substrate of a semiconductor device is viewed from above, an isolation region, an IGBT region, and a diode region are all formed adjacent to each other. A deep region that is connected to a body region and an anode region is formed in the isolation region. A drift region is formed extending across the isolation region, the IGBT region, and the diode region, inside the semiconductor substrate. A collector region that extends across the isolation region, the IGBT region and the diode region, and a cathode region positioned in the diode region, are formed in a region exposed on a lower surface of the semiconductor substrate. A boundary between the collector region and the cathode region is in the diode region, in a cross-section that cuts across a boundary between the isolation region and the diode region, and divides the isolation region and the diode region. The collector region formed in the isolation region has a higher dopant impurity concentration than the collector region in the IGBT region.