摘要:
A method of manufacturing a semiconductor apparatus includes forming a trench in a semiconductor layer, forming a gate electrode inside the trench, forming a thermally-oxidized film on the gate electrode inside the trench, forming a silicate glass film on the thermally-oxidized film inside the trench, forming a body region inside the semiconductor layer, and forming a source region on the body region. The method provides a semiconductor apparatus having reduced fluctuation of a channel length and low ON-resistance.
摘要:
There is provided a fuel cell power generation system in which power loss in a power line electrically connecting a stack and a power conversion circuit, thereby attaining high power generation efficiency. A reformer 6 and the stack 7 are disposed in a main body package 2. Stack output terminals 31 are provided in both ends in a stacking direction of the stack 7. A power conversion circuit 24 is disposed in the main body package 2 and arranged in the proximity to the stack 2. Power conversion circuit input terminals 32 are provided on the power conversion circuit 24 and arrayed in a direction parallel to the stacking direction of the stack. Stack output lines 27 electrically connect the stack output terminals 31 and the power conversion circuit input terminals 32.
摘要:
An object of the present invention is to provide a method for producing an alkyl ester of a fatty acid from a fat or oil, of which main component is a triglyceride, and an alkyl alcohol under mild conditions in a high reaction efficiency, and the alkyl ester of a fatty acid can be effectively utilized as a diesel fuel oil, an industrial raw material or the like, the method further being capable of utilizing on an industrial scale, in which post-treatment steps for removing a catalyst component can be simplified or omitted. For this purpose, the method for producing an alkyl ester of a fatty acid of this invention includes the step of carrying out a transesterification reaction between a fat or oil and an alcohol in the presence of a base catalyst containing calcium oxide, characterized in that the method includes the step of contacting the base catalyst with the alcohol, to carry out an activation treatment thereof in advance of the reaction.
摘要:
A method of manufacturing a semiconductor apparatus includes forming a trench in a semiconductor layer, forming a gate electrode inside the trench, forming a thermally-oxidized film on the gate electrode inside the trench, forming a silicate glass film on the thermally-oxidized film inside the trench, forming a body region inside the semiconductor layer, and forming a source region on the body region. The method provides a semiconductor apparatus having reduced fluctuation of a channel length and low ON-resistance.
摘要:
An epitaxial layer is formed on an n+ semiconductor substrate by epitaxial growth. A gate trench is formed to the surface of gate trench so that the bottom of gate trench reaches middle of the epitaxial layer. A gate insulator is formed on the inner wall of gate trench and a polysilicon is formed in the gate trench with the gate insulator interposed therebetween. An HTO film is formed on the surface of the polysilicon and the n− epitaxial layer. At this time, an ion plantation is performed to the epitaxial layer through the HTO film. Hence, a p diffused base layer, an n+ diffused source layer, an n+ diffused source layer is formed. A CVD oxide film is formed on the HTO film. After a BPSG having flowability is deposited on the CVD oxide film, the BPSG film is planarized with a heat treatment of 900-1100 degree Celsius.
摘要:
A mechanical stopper offers a relative rotation range exceeding 360°, scarcely generating abrasion powder and the like and having a simple structure. The stopper apparatus has a rotation axis section in which relative rotation is carried out between two members around one rotation axis, for restricting the rotation angle of one of the members with respect to the other member. The stopper apparatus has a contact piece provided on the member and two support members and are provided standing on the other member with a clearance therebetween. A band-shaped elastic member is layered across between the above-mentioned two support members, and the contact piece contacts the elastic member to stop the rotation of the member.
摘要:
A method of manufacturing a semiconductor apparatus includes forming a trench in a semiconductor layer, forming a gate electrode inside the trench, forming a thermally-oxidized film on the gate electrode inside the trench, forming a silicate glass film on the thermally-oxidized film inside the trench, forming a body region inside the semiconductor layer, and forming a source region on the body region. The method provides a semiconductor apparatus having reduced fluctuation of a channel length and low ON-resistance.
摘要:
A volume controller for controlling volume balance between a front speaker and a rear speaker located within a vehicle, includes a fade volume computing unit for computing an amplifying factor k1 of an input signal for providing an increased volume at the rear or front speaker by the volume at a prescribed position within the vehicle which is equal to an decreased volume in the front or rear speaker when a signal supplied to the front or rear speaker is attenuated by an attenuating factor K1; and a control unit for multiplying the signal supplied to the rear or front speaker by k1 when a signal supplied to the front or rear speaker is attenuated by K1. In this configuration, a volume controller can form an acoustic field with a sense of realism when volume adjustment is preformed in a to-and-fro direction.
摘要:
A MOSFET has a base layer and a source layer in a cell surrounded by a trench gate formed in a semiconductor substrate. A trench contact is formed through the source layer and the base layer. The gate is polygonal such as square. The trench contact is thin and linear so as to increase embedding characteristics. Further, the trench contact is ring or cross shaped so as to reduce a source length.
摘要:
A lubricating coating composition in which at least one basic lubricant selected from a basic sulfonate, a basic salicylate, and a basic phenate is dissolved in a volatile solvent is applied to the frictional surface of a box and a pin constituting a threaded joint for oil well pipes. The composition may further contain one or more of a thermoplastic resin powder, another lubricant, and an extreme pressure agent. The surface roughness of the frictional surfaces preferably has an Rmax in the range of 5-40 micrometers.