摘要:
An SiC semiconductor device includes a substrate, a drift layer, a base region, a source region, a trench, a gate oxide film, a gate electrode, a source electrode and a drain electrode. The substrate has a Si-face as a main surface. The source region has the Si-face. The trench is provided from a surface of the source region to a portion deeper than the base region and extends longitudinally in one direction and has a Si-face bottom. The trench has an inverse tapered shape, which has a smaller width at an entrance portion than at a bottom, at least at a portion that is in contact with the base region.
摘要:
A semiconductor device includes a semiconductor substrate and an electric field terminal part. The semiconductor substrate includes a substrate, a drift layer disposed on a surface of the substrate, and a base layer disposed on a surface of the drift layer. The semiconductor substrate is divided into a cell region in which a semiconductor element is disposed and a peripheral region that surrounds the cell region. The base region has a bottom face located on a same plane throughout the cell region and the peripheral region and provides an electric field relaxing layer located in the peripheral region. The electric field terminal part surrounds the cell region and a portion of the electric field relaxing layer and penetrates the electric field relaxing layer from a surface of the electric field relaxing layer to the drift layer.
摘要:
A supply unit is provided to supply humidified gas near a nozzle array of a line-type recording head. The flow-rate distribution of the supplied humidified gas in a direction of the nozzle array is changeable in accordance with a conveying region where a sheet is conveyed while opposing the nozzle array.
摘要:
An ohmic electrode for a p-type SiC semiconductor, and a method of forming the ohmic electrode. The ohmic electrode has an ohmic electrode layer, which has an amorphous structure and which is made of a Ti(1−x−y)Si(s)C(y) ternary film of which a composition ratio is within a composition range that is surrounded by two lines and two curves expressed by an expression x=0 (0.35≦y≦0.5), an expression y=−1.120x+0.5200 (0.1667≦x≦0.375), an expression y=1.778(x−0.375)2+0.1 (0≦x≦0.375) and an expression y=−2.504x2−0.5828x+0.5 (0≦x≦0.1667) and that excludes the line expressed by the expression x=0. The ohmic layer is directly laminated on a surface of a p-type SiC semiconductor.
摘要:
The invention provides an ohmic electrode of a p-type SiC semiconductor element, which includes an ohmic electrode layer that is made of Ti3SiC2, and that is formed directly on a surface of a p-type SiC semiconductor. The invention also provides a method of forming an ohmic electrode of a p-type SiC semiconductor element. The ohmic electrode includes an ohmic electrode layer that is made of Ti3SiC2, and that is formed directly on a surface of a p-type SiC semiconductor. The method includes forming a ternary mixed film that includes Ti, Si, and C in a manner such that an atomic composition ratio, Ti:Si:C is 3:1:2, on a surface of a p-type SiC semiconductor to produce a laminated film; and annealing the produced laminated film under vacuum or under an inert gas atmosphere.
摘要翻译:本发明提供了一种p型SiC半导体元件的欧姆电极,其包括由Ti 3 SiC 2制成的欧姆电极层,其直接形成在p型SiC半导体的表面上。 本发明还提供了形成p型SiC半导体元件的欧姆电极的方法。 欧姆电极包括由Ti 3 SiC 2制成并且直接形成在p型SiC半导体的表面上的欧姆电极层。 该方法包括以使得在p型SiC半导体的表面上的原子组成比Ti:Si:C为3:1:2的方式形成包括Ti,Si和C的三元混合膜,以产生 层压膜; 并在真空或惰性气体气氛下退火生产的层压膜。
摘要:
A normal person (i.e. a control) and liver diseases such as drug induced liver injury, an asymptomatic hepatitis B carrier, an asymptomatic hepatitis C carrier, chronic hepatitis B, chronic hepatitis C, liver cancer, a nonalcoholic fatty liver disease (NAFLD), nonalcoholic steatohepatitis (NASH), and simple steatosis (SS) are identified by measuring the concentrations of γ-Glu-X (X represents an amino acid or an amine) peptides or the levels of AST or ALT in blood and carrying out, for example, a multiple logistic regression based on the measured value.
摘要:
A method is set forth of forming an ohmic electrode having good characteristics on a SiC semiconductor layer. In the method, a Ti-layer and an Al-layer are formed on a surface of the SiC substrate. The SiC substrate having the Ti-layer and the Al-layer is maintained at a temperature that is higher than or equal to a first temperature and lower than a second temperature until all Ti in the Ti-layer has reacted with Al. The first temperature is the minimum temperature of a temperature zone at which the Ti reacts with the Al to form Al3Ti, and the second temperature is the minimum temperature of a temperature zone at which the Al3Ti reacts with SiC to form Ti3SiC2. As a result of this maintaining of temperature step, an Al3Ti-layer is formed on the surface of the SiC substrate. The method also comprises further heating the SiC substrate having the Al3Ti-layer to a temperature that is higher than the second temperature. As a result of this step of further heating the SiC substrate reacts with Al3Ti of the Al3Ti-layer to form a Ti3SiC2-layer on the surface of the SiC substrate.
摘要:
A personal computer identifies a target of a printing error in a printer. At this time, the personal computer identifies the target of the printing error in the printer as a print file, based on an identification code obtained together with status information which represents error information. The personal computer waits for the printer to restore the error. The personal computer determines whether or not the printer has restored the error based on the status information obtained from the printer on a regular basis or when driven by some event. Next, the personal computer retransmits the print file thus identified to the printer. Alternatively, the printer re-receives the print file.
摘要:
A sensing device, such as an angular speed detecting device, includes a vibrator for improving detection precision. The vibrator is displaceably supported on a substrate and is vibrated in the direction of an X-axis by driving electrodes. Detecting electrodes detect vibrations of the vibrator in the direction of a Y-axis caused by a Coriolis' force resulting from the angular speed occurring about a Z-axis. Each of the driving and detecting electrodes includes a movable electrode that is connected to the vibrator and that is displaced together therewith on the substrate and a fixed electrode fixed onto the substrate in such a manner as to face the movable electrode. By equalizing conductors connected to fixed electrodes of the driving electrodes and conductors connected to fixed electrodes of the detecting electrodes in length, width, and thickness, respectively, one electrical characteristic is set for those of the wiring portions which function in the same manner.
摘要:
A low dielectric constant ceramic substrate comprised of 90 to 98% of mullite (3Al.sub.2 O.sub.3. 2SiO.sub.2) and 10 to 2% of a sintering promotor comprised of 0.5 to 3% of magnesia (MgO) and 1.5 to 7% of calcium oxide (CaO).