摘要:
A lateral IGBT structure having an emitter terminal including two or more base layers of a second conductivity-type for one collector terminal, in which the base layers of a second conductivity-type in emitter regions are covered with a first conductivity-type layer having a concentration higher than that of a drift layer so that a silicon layer between the first conductivity-type layer covering the emitter regions and a buried oxide film has a reduced resistance to increase current flowing to an emitter farther from the collector to thereby enhance the current density.
摘要:
In a driving circuit, for controlling the turning on and off of a main semiconductor switching device of an insulated gate type, in an insulated gate semiconductor switching device for electric power conversion, bipolar semiconductor devices of an insulated gate control type, particularly insulated gate bipolar transistors (IGBTs) are used at the output stage of a circuit that controls the gate voltage of the main semiconductor switching device.
摘要:
A horizontal-type IGBT having a large current density, which is formed on a SOI substrate, has an emitter region, which is made up with two (2) or more of base-layers of a second conductivity-type on an oxide film groove, wherein the base-layers of the second conductivity-type in the emitter region are covered with a layer of a first conductivity-type, being high in the conductivity than a drift layer, and length of a gate electrode on the oxide film groove is reduced than the length of the gate electrode on the collector, and further the high-density layer of the first conductivity-type is formed below the base layer of the second conductivity-type on the collector, thereby achieving the high density of the layer of the first conductivity-type while maintaining an endurable voltage, and an increase of the current density.
摘要:
A horizontal-type IGBT having a large current density, which is formed on a SOI substrate, has an emitter region, which is made up with two (2) or more of base-layers of a second conductivity-type on an oxide film groove, wherein the base-layers of the second conductivity-type in the emitter region are covered with a layer of a first conductivity-type, being high in the conductivity than a drift layer, and length of a gate electrode on the oxide film groove is reduced than the length of the gate electrode on the collector, and further the high-density layer of the first conductivity-type is formed below the base layer of the second conductivity-type on the collector, thereby achieving the high density of the layer of the first conductivity-type while maintaining an endurable voltage, and an increase of the current density.
摘要:
A lateral IGBT structure having an emitter terminal including two or more base layers of a second conductivity-type for one collector terminal, in which the base layers of a second conductivity-type in emitter regions are covered with a first conductivity-type layer having a concentration higher than that of a drift layer so that a silicon layer between the first conductivity-type layer covering the emitter regions and a buried oxide film has a reduced resistance to increase current flowing to an emitter farther from the collector to thereby enhance the current density.
摘要:
In a manufacturing method of a SOI type high withstand voltage semiconductor device formed on a support substrate via an insulation film, a small-sized semiconductor device having small dispersion of withstand voltage is manufactured by introducing impurities into the whole surface of a p-type or n-type SOI substrate having an impurity concentration of 2E14 cm−3 or less and serving as an active layer of the semiconductor device with an ion implantation method and thereby forming a drift layer.
摘要:
The output circuit uses an IGBT incorporating a normal latch-up operation measure and the ESD clamp circuit uses an IGBT that can more easily latch up than the output circuit device which has the latch-up prevention layer lowered in impurity density or removed.
摘要:
In a manufacturing method of a SOI type high withstand voltage semiconductor device formed on a support substrate via an insulation film, a small-sized semiconductor device having small dispersion of withstand voltage is manufactured by introducing impurities into the whole surface of a p-type or n-type SOI substrate having an impurity concentration of 2E14 cm−3 or less and serving as an active layer of the semiconductor device with an ion implantation method and thereby forming a drift layer.
摘要:
In a lateral IGBT structure equipped with an emitter terminal, comprising two or more second conductivity type base layers, per one collector terminal, the second conductivity type base layer in the emitter region is covered by a first conductivity type layer which has a higher impurity concentration than the drift layer, and width L1 of the gate electrode located between two adjacent emitters is 4 μm or less, or in addition to that, width L2 of the opening for leading out an emitter electrode located between two adjacent gate electrodes is 3 μm or less.
摘要:
A small-sized, low-loss load drive circuit, an integrated circuit for that drive circuit, and an inexpensive plasma display using that integrated circuit. In the load drive circuit that responds to switching commands to supply a high or low voltage to a load by switching, the source-drain voltage of an output-stage n-type MOS transistor of a flip-flop is supplied between the gate and cathode of a main IGBT. In order to hold this voltage, the power source to the flip-flop is supplied from a main power source or a charge pump power circuit connected at the fixed potential point of the main power source. In addition, a discharge prevention circuit and discharge prevention elements and are provided in order that the potential of the power source can be maintained higher than the positive potential of main power source.