摘要:
A method for manufacturing a semiconductor device includes steps of: forming a trench on a semiconductor substrate, which is made of silicon; and filling the trench with an epitaxial layer. The epitaxial layer is made of silicon, and the step of filling the trench includes a step of performing a plasma CVD method with using a silicon source gas. By using anisotropic character of a plasma, the epitaxial layer is selectively deposited on a bottom of the trench. Thus, the trench is filled with the epitaxial layer having no void.
摘要:
A semiconductor device includes: two main electrodes; multiple first regions; and multiple second regions. The first region having a first impurity concentration and a first width and the second region having a second impurity concentration and a second width are alternately repeated. A product of the first impurity concentration and the first width is equal to a product of the second impurity concentration and the second width. The first width is equal to or smaller than 4.5 μm. The first impurity concentration is lower than a predetermined concentration satisfying a RESURF condition. A ratio between on-state resistances of the device at 27° C. and at 150° C. is smaller than 1.8.
摘要:
Provided is a driving motor controlling device of a construction machine, including a driving motor which is included in the construction machine having a swivel joint interposed between an upper body and a lower body, and is connected to a pump and a tank through the swivel joint, and a motor control valve which switches a state for connecting the pump and the tank to the driving motor such that the driving motor is controlled to a stop state, a normal rotation state, or a reverse rotation state, wherein the motor control valve has a neutral position for the stop state, a normal rotation position for the normal rotation state, and a reverse rotation position for the reverse rotation state, and is switched to the neutral position, the normal rotation position, or the reverse rotation position, based on a command from a control device manipulated by a operator and a pressure of an inflow side of hydraulic oil into the driving motor, wherein the motor control valve is disposed in the lower body in which the driving motor is disposed, and is integrally formed with the driving motor, and wherein, upon a warming up operation, the hydraulic oil discharged from the pump is circulated to the tank disposed in the upper body through the swivel joint and the motor control valve.
摘要:
A semiconductor device includes: an n+ type drain region; an n type drift region that connects with the n+ type drain region; a p type body region; a n+ type source region that connects with the p type body region; and a gate electrode that is provided, with being covered by a gate insulation film, in a gate trench that penetrates the p type body region. The semiconductor further includes: a p type silicon region that adjoins the n type drift region; and an n type silicon region provided in a region almost including a carrier passage that connects the n type drift region and the p type body region. Here, the p type silicon region and the p type body region directly connect with each other.
摘要:
In a vertical type MOSFET device having a super junction structure, in which a N conductive type column region (2) and a P conductive type column region (3) are alternately aligned, regarding to a distance between a terminal end (17) of an active region (13) and a terminal end (16) of a column region (4), the terminal end (16) of the column region (4) is disposed at a position, which is separated from the active region terminal end (17) by a distance obtained by subtracting a half of a width of the N conductive type column region (2) from a distance corresponding to a depth of the column region (4). Thus, an electric field concentration at a specific portion in a region facing a narrow side of the column structure is prevented so that a breakdown voltage of the vertical type MOSFET is improved.
摘要:
A semiconductor device includes a body region, a drift region having a first part and a second part, and a trench gate electrode. The body region is disposed on the drift region. The first and second parts extend in an extending direction so that the second part is adjacent to the first part. The trench gate electrode penetrates the body region and reaches the drift region so that the trench gate electrode faces the body region and the drift region through an insulation layer. The trench gate electrode extends in a direction crossing with the extending direction of the first and second parts. The first part includes a portion near the trench gate electrode, which has an impurity concentration equal to or lower than that of the body region.
摘要:
A method for manufacturing a semiconductor device includes: forming a trench in a predetermined layer of a semiconductor substrate; heating the substrate having the trench in a non-oxidizing and non-nitridizing atmosphere containing a dopant or a compound that includes the dopant in order to smooth the surfaces defining the trench and to maintain the dopant concentration in the predetermined layer to be a predetermined concentration before the heating is treated; and forming an epitaxially grown film to fill the trench. The conductivity type of the dopant contained in the non-oxidizing and non-nitridizing atmosphere is the same as that of the dopant initially contained in the predetermined layer.
摘要:
A semiconductor device includes a semiconductor substrate and a semiconductor layer. The semiconductor substrate has a main surface that is an Si{100} surface. The substrate has a trench in the main surface. The semiconductor layer is located on surfaces defining the trench to have common crystallographic planes with the semiconductor substrate. The trench is defined by a bottom surface, two long sidewall surfaces that face each other, and two short sidewall surfaces that face each other. The bottom surface and the long sidewall surfaces are Si{100} surfaces.
摘要:
In a semiconductor device, a p-type base region is provided in an n−-type substrate to extend from a principal surface of the substrate in a perpendicular direction to the principal surface. An n+-type source region extends in the p-type base region from the principal surface in the perpendicular direction, and an n+-type drain region extends in the substrate separately from the p-type base region with a drift region interposed therebetween. A trench is formed to penetrate the p-type base region from the n+-type source region in a direction parallel to the principal surface. A gate electrode is formed in the trench through a gate insulating film. Accordingly, a channel region can be formed with a channel width in a depth direction of the trench when a voltage is applied to the gate electrode.
摘要翻译:在半导体器件中,p型基极区域设置在n型衬底中,从衬底的主表面沿垂直于主表面的方向延伸。 n +型源极区域在垂直方向上从主表面在p型基极区域中延伸,并且n +型漏极区域在p型基极区域中与p型基极区域分开延伸, 漂移区域。 形成沟槽,以在平行于主表面的方向上从n +型源极区域穿透p型基极区域。 栅电极通过栅极绝缘膜形成在沟槽中。 因此,当向栅电极施加电压时,可以在沟槽的深度方向上形成沟道区域。
摘要:
A drug containing a calmodulin inhibitor as an active ingredient is disclosed. This drug is useful in the suppression of neuronal cell death, in particular brain neuronal cell death, due to, for example, cerebral ischemia.Also, a drug containing a compound capable of inhibiting binding of calmodulin to a cytoskeltal protein as an active ingredient and a drug containing a compound suppressing the breakdown of a cytoskeltal protein as an active ingredient are disclosed.These drugs are useful in the treatment and prevention of various diseases in the brain and sequelae thereof as well as in the prevention of relapses of these diseases.