摘要:
A specific information input region (B) individually specifying information to be input and an input mode switching region (C) used for changing an information input mode are placed on an information input region (A) set on a substrate. Each of these regions is displayed to be visible. An optical sensor detects a touched position on the information input region. Then, the touch operation in the input mode switching region (C) is detected according to the output of the optical sensor to selectively switch the information input mode among keyboard input, pen tablet input and mouse input. The output of the optical sensor is analyzed according to the set input mode to find out the information input by the touch operation.
摘要:
In a reverse conducting semiconductor device, which forms a composition circuit, a positive voltage that is higher than a positive voltage of a collector electrode may be applied to an emitter electrode. In this case, in a region of the reverse conducting semiconductor device in which a return diode is formed, a body contact region functions as an anode, a drift contact region functions as a cathode, and current flows from the anode to the cathode. When a voltage having a lower electric potential than the collector electrode is applied to the trench gate electrode at that time, p-type carriers are generated within the cathode and a quantity of carriers increases within the return diode. As a result, a forward voltage drop of the return diode lowers, and constant loss of electric power can be reduced. Electric power loss can be reduced in a power supply device that uses such a composition circuit in which a switching element and the return diode are connected in reverse parallel.
摘要:
A protrusion (13a) and a protrusion (13b) are formed a predetermined distance apart in the direction of a shaft in the outer circumferential surface of the roller main body (11). The cross sections of the protrusion (13a) and the protrusion (13b) are shaped such that a center portion of the roller main body (11) in the direction of the shaft is a boundary (14), and that on the left side of the boundary (14), a vertex (131a) is displaced to the left side from the perpendicular bisector (133a) of an opposite side (132a) whereas on the right side of the boundary (14), a vertex (131b) is displaced to the right side from the perpendicular bisector (133b) of an opposite side (132b). In this way, in a metallic movement roller that moves a strung endless belt, the winding movement and the like of the belt can be prevented, and the belt can be intentionally moved in a specific direction.
摘要:
A partition member is provided with an elastic body for absorbing hydraulic pressure fluctuation of the primary liquid chamber and a frame member for supporting an outer circumferential portion of the elastic body while aiming to prevent the rotation of the elastic body. A relief aperture communicating between the primary liquid chamber and the secondary liquid chamber is located on the outer circumferential side in the elastic body supporting region of the frame member. A relief valve for opening and closing the relief aperture is integrally formed on the outer circumferential side of the elastic body. The relief valve is formed of a pair of right and left relief valves. A width across flat sections are formed on a thick-walled outer circumferential section of the elastic body which is located between the right and left relief valves, such as to serve as a detent means.
摘要:
A technique for a reverse conducting semiconductor device including an IGBT element domain and a diode element domain that utilize body regions having a mutual impurity concentration, that makes it possible to adjust an injection efficiency of holes or electrons to the diode element domain, is provided. When a return current flows in the reverse conducting semiconductor device that uses an NPNP-type IGBT, a second voltage that is higher than a voltage of an emitter electrode is applied to second trench gate electrodes of the diode element domain. N-type inversion layers are formed in the periphery of the second trench gate electrodes, and the electrons flow therethrough via a first body contact region and a drift region which are of the same n-type. The injection efficiency of the electrons to the return current is increased, and the injection efficiency of the holes is decreased. Due to this, an increase in a reverse recovery current can be prevented, and a switching loss caused in the diode element domain can be decreased.
摘要:
A system and method for automatically calculating an optimum layout of a wireless cell station in an environment using a wireless communication system, thereby achieving a timesaving and resources-saving cell design procedure. The system calculates an optimum layout of the wireless cell station based on information of terminal locations.
摘要:
A semiconductor device is provided having a high voltage driver IC reducing malfunction or device destruction. A high voltage IC chip includes a trench structure that surrounds each of two semiconductor regions at different electrical potentials. Specifically, a first semiconductor region forms a ground-potential-based circuit, and a high voltage junction terminating structure around a second semiconductor region forms a floating-potential-based circuit. A trench structure is formed after digging a trench by implanting a high concentration p+ region on a trench wall, or alternatively, by filling the trench with a p+ doped polysilicon or with a dielectric.
摘要:
A polypropylene composition comprising 0.001 to 10 parts by weight of a polyethylene having an intrinsic viscosity [&eegr;E] of 0.01 to less than 15 dl/g s measured in tetralin at 135° C. and 100 parts by weight of a polyolefin comprising at least polypropylene, wherein the polyethylene is finely dispersed as particles with a number average particle diameter of, e.g., 1 to 5000 nm in the polyolefin comprising at least polypropylene. By virtue of the above constitution, the polypropylene composition has excellent transparency and rigidity, is free from the creation of a sweeper roll flow mark in the preparation of a film and substantially free from a neck-in phenomenon of a film, and has high productivity.
摘要:
A polydisperse propylene polymer characterized by being produced by polymerizing a propylene monomer or a mixed monomer of propylene and other olefin(s) by a multistage polymerization wherein the polymerization conditions are stepwise changed in the presence of a supported metallocene catalyst having a transition metal compound and an aluminoxane or a reaction product thereof supported on a finely particulate support, and an organoaluminum compound as a scavenger, and by having a ratio of a weight-average molecular weight to a number-average molecular weight (Mw/Mn) of 4.0 or higher, a melting point (Tm) of 165° C. or lower and a difference between the melting point (Tm) and a heat distortion temperature (HDT) of 30° C. or less.
摘要:
Disclosed are &mgr;-oxo-bis-metallocene complex compounds, catalysts for the polymerization of olefins comprising a &mgr;-oxo-bis-metallocene complex compound and at lease one cocatalyst selected from the group consisting of an aluminoxane, an ionic compound, and a Lewis acid, and a process for the polymerization of olefins. An example of the &mgr;-oxo-bis-metallocene complex compound is represented by the following formula (1): wherein, for example, M is zirconium, n is 1, Y is silicon, X is chloro, and R1-R10 maybe hydrogen or alkyl.