摘要:
A head slider includes a leading end and a trailing end, a main top face and two step faces. The main top face faces a recording medium and forms a part of the leading end. The two step faces extend from the leading end to a downstream side at a lower position than the main top face when the main top face is placed face up. The step faces are respectively provided at the right and left sides with respect to the airflow. The main top face extends between the two step faces. The other portion of the main top face extends at the rear side of the step faces. At least a part of the head slider floats above the recording medium.
摘要:
A high-frequency composite component is provided by placing an antenna on a multi-layer wiring board, placing a multiplexer/demultiplexer circuit, first and second matching circuits, and first and second balanced-to-unbalanced transformer circuits inside the board respectively, and providing first to fourth input and output terminals on the side surface of the board. The antenna is connected to the multiplexer/demultiplexer circuit via a first unbalanced line path, and the multiplexer/demultiplexer is connected to the first and second matching circuits via second and third unbalanced line paths, respectively. The first and second matching circuits are connected to the first and second balanced-to-unbalanced transformer circuits, respectively, via fourth and fifth unbalanced line paths, respectively. The respective balanced terminals of the first and second balanced-to-unbalanced transformer circuits are connected to the first and second, and third and fourth input and output terminals, respectively, via first and second balanced line paths, respectively.
摘要:
To minimize and stably suppress worsening of a warpage of a wafer in epitaxial treatment. A semiconductor wafer is flattened by a double-sided grinding machine. Machining strains produced at both sides of the semiconductor wafer are removed to measure a direction of the warpage of the semiconductor wafer. The direction of the warpage is adjusted and then, epitaxial treatment is performed.
摘要:
A method for forming a metal-strapped polysilicon gate and for simultaneously forming a strapped-metal polysilicon gate and a metal contact filling includes the steps of forming a gate dielectric layer on a surface of a silicon substrate; forming a polysilicon layer on the gate dielectric layer; forming a first insulating layer on the polysilicon layer; forming insulating spacers on either side of the polysilicon layer and the first insulating layer; and forming ion implantation regions in the surface of the silicon substrate. Next, a second insulating layer is deposited on the silicon substrate, and the second insulating layer is polished using chemical mechanical polishing to planarize the upper surface of the second insulating layer with the upper surface of the first insulating layer as a polishing stopper. Then, a contact hole is formed in the second insulating film, wherein the contact hole is laterally spaced from the polysilicon layer and the first insulating layer. Subsequent steps include: removing the first insulating layer, thereby forming an unfilled region above the polysilicon layer; depositing a metal such as tungsten in the unfilled region and the contact hole; and polishing the deposited metal layer to planarize the upper surface of the metal with the upper surface of the second insulating layer.
摘要:
A modular guide plate for a modular plug having an insulation housing with a receiving cavity includes an organizing section having a plurality of organizing apertures in which core wires of a cable are arranged and held closely in parallel and a plurality of terminal slits through which contact terminals are press-connected to the core wires and an introducing section extending rearwardly from the organizing section and having bottom and side walls for introducing the core wires into the organizing apertures.
摘要:
A single phase and three phase heater element circuit for a ceramic fiber heater wherein a plurality of blocks each of which is formed by a plurality of heater elements arranged side by side on a base of insulation material and connected to one another to form a series circuit, said series circuit being connected across an electric power source, and adjacent ends of the series circuits in adjacent blocks being connected to the same terminal of said electric power source. By connecting adjacent ends of adjacent blocks of ceramic fiber heater element circuits together, the ends of the series circuit connected to separate terminals of the power source are spaced sufficiently far apart from each other such that current flow through the insulation material between ends adjacent the blocks is minimized and preferably substantially prevented for preventing short circuiting and failure of the heater.
摘要:
An exposure mask having an excellent alignment accuracy between patterns, which is prepared by first forming on a light transmissive substrate a light shielding film or a semi-transparent film pattern (first pattern) somewhat larger than a desired dimension, forming thereon a semi-transparent film or a light transmissive film pattern (second pattern) so as to include all patterns of the desired dimensions made up of a light shielding part, a semi-transparent part and a light transmissive part, and then removing a projected part of the first pattern with use of the second pattern as a mask.The semi-transparent film is formed of at least two layers each of which contains a common element, thus the semi-transparent film can be made with use of the same apparatus and when patterning, etching process can be carried out with use of the same etchant.Further, since in a mask including the semi-transparent pattern, at least that area of non-pattern zone where light reaches a wafer through the transfer, acts to shield the exposure light, too narrowed pattern or insufficient focal depth can be prevented.
摘要:
A surface acoustic wave filter includes a piezoelectric substrate. On the surface of the piezoelectric substrate, an input transducer and an output transducer are formed at a predetermined interval. The input transducer and the output transducer are respectively formed with a pair of IDT (interdigital electrode transducers) disposed oppositely. A pair of IDT which construct at least one transducer of the input transducer and the output transducer are formed on the piezoelectric substrate in the following manner. That is, a first impulse train is determined by inverse Fourier transformation of desired transmission characteristics (where, center frequency is f.sub.0 and surface wavelength is .sub.0), a second impulse train is determined by double over-sampling of the first impulse train along its envelope at a half period, wherein the number of unit impulses of the first impulse train is doubled, a third impulse train is determined by dividing the second impulse train into four impulse trains each, among which second and third impulses are made zero, and the IDT are formed on the piezoelectric substrate corresponding to the third impulse train.
摘要:
An apparatus for manufacturing various shapes of bread that includes a device for forming a continuous sheet of bread dough, a roller for winding up the sheet of bread dough traveling on a horizontal conveyor from one of its sides into a bar of bread dough, the conveyor causing the bar to fall from its downstream end, and a cutter for cutting the falling dough body into dough pieces by squeezing it with flat surfaces of the cutter, according to its preset weight or length.