Abstract:
A first electronic component (1), in particular a semiconductor die and a second electronic component (2), in particular a substrate, each with a main surface, are bonded to each other by applying at least one metal layer (3,3') on each of the main surfaces. Then the semiconductor die and the substrate are aligned against each other with their main surfaces facing each other. The die and substrate with the metal layers (3,3') in between form an arrangement, which is introduced into a compression means. Afterwards the arrangement is compressed in the compression means at a pressure in a range of 10 to 35 MPa, and heat in a range of 230 to 275 °C is applied to the arrangement, by which temperature and pressure the electronic components (1,2) are bonded to each other. In particular the at least one metal layer may comprise silver and/or indium and the temperature and pressure used for bonding result in a reduced bonding time and allow bonding to be performed in ambient air atmosphere without oxidation of the indium.
Abstract:
PROBLEM TO BE SOLVED: To provide a high voltage switch with high reliability in operation by increasing insulation strength. SOLUTION: A quench chamber includes a housing arranged along an axis, an arcing contact device held in the housing, an exhaust gas volume of which a boundary is drawn by the housing, and an exit channel for exhaust gas 9 which passes through a wall surface of the housing. An edge 21 which passes around the axis in an annular shape, and is electrically shielded is arranged on one end surface 20 of a housing attachment 18. A flow of the exhaust gas 9 coming out from the exit channel is separated from the housing attachment 18 by the edge 21. Because the exhaust gas 9 is separated from the housing attachment 18 by the edge 21, the gas enters the metal container in a form of a gas jet 30 of which a boundary in a diameter direction is drawn on an outside. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of operating a rotary electric machine that is adapted to prevent power semiconductor switches from rapidly deteriorating, by reducing the switching frequencies of the power semiconductors. SOLUTION: A method of operating a rotary electric machine is identified. The rotary electric machine is connected to a transducer circuit having a DC voltage circuit in phase, in order to connect at least two voltage levels, and the phase of the transducer circuit is connected to the DC voltage circuit, depending on the combination of switching states in which switching states are selected for the power semiconductor switches inside the transducer circuit. In order to reduce the switching frequencies of the power semiconductor switches, predictions are made, with regard to further behaviors of the entire system. In accordance with the predictions, selections are made, with regard to the number of transitions from preceding selected combinations of switching states to the selected combinations of the switching states, starting from selected combinations of switching states where optimum combinations of switching states precede, and with regard to respective predetermined value ranges, with respect to the torques of the rotary electric machines and stator magnetic fluxes of rotary electric machines, and potentials at sub-connections. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To make out a method, a computer program, and a system for estimating the state of a power transmission network using less measured values. SOLUTION: In a method, a computer program, and a system for estimating the state of a power transmission network, the phasor measurement of a time stamp is performed by feather measurement instruments (1) arranged in the first set positions (11 and 12) within the network, the phasor of a plurality of voltages or currents is estimated in the second set position, the first set positions (11 and 12) and the second set positions are apart from each other, and the state of network elements (L4, L5, and 13) far away from the phasor measuring instrument is estimated from a phasor estimated value and estimated phasor. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a method for more simply manufacturing a buffer element and the more stable buffer element. SOLUTION: The method for manufacturing the buffer element manufactures the self-supported buffer element having a region capable of substantially independently expanding or contracting in order to reduce a mechanical stress between two materials having different thermal expansion coefficients. The method comprises the steps of deforming a metal sheet (1) to three-dimensional structures (1', 1") so as to divide the structures (1', 1") into regions capable of substantially independently expanding and contracting, resultantly pressing the structures (1', 1"), and working to form a structure plate (P). This method can be used to manufacture the buffer element. The buffer element is simply manufactured, and particularly an application to a semiconductor technique can be stably and simply handled.
Abstract:
PROBLEM TO BE SOLVED: To provide a disconnector which has a high dielectric strength, and can be simply and inexpensively manufactured in small size. SOLUTION: The disconnector provides two insulated contacts (2) disposed in a conductive capsule container (1) filled with essentially insulating gas, and an insulated finger (3) movable between the insulated contacts. An insulating coating (7) is formed in the capsule container and has a protrusion (8) protruding toward the inner. The insulating coating prevents a spark generated in the disconnector from flashing over the capsule container (1) when the disconnector is opened. Another protrusion (9) prevents the spark from propagating toward the insulated contacts (2).
Abstract:
PROBLEM TO BE SOLVED: To provide a method for co-generating electricity and product flow containing at least one formally-liquid hydrocarbon. SOLUTION: An electric power generating system is operated by burning a first part of a composition which is gaseous under normal conditions containing methane. At least part of the electricity is used for operating a dielectric barrier discharge reactor having at least one of a first electrode device, a second electrode device, and a layer of a normally-solid dielectric material positioned between the first electrode device and the second electrode device. The second part of the composition is introduced into the reactor. The second part of the composition is subjected to dielectric barrier discharge in the presence of a normally-solid catalyst. The second part of the composition is turned to a product flow containing at least one normally-liquid hydrocarbon.
Abstract:
PROBLEM TO BE SOLVED: To provide a pressurized gas-blast breaker capable of extinguishing an arc reliably and requiring no large driving energy. SOLUTION: This pressurized gas-blast circuit breaker is provided with an arc region and first and second piston chambers 7, 8 divided by a piston 6 in a piston chamber, and both piston chambers 7, 8 are communicated with the arc region via a common gas passage 11. The first piston chamber 7 has a first opening 10 for discharging the compressed arc extinguishing gas, a second opening 12 is arranged in the piston chamber communicating the second piston chamber 8 with the gas passage 11 at least sometimes, the first opening 10 and second opening 12 merge with the gas passage 11, and the gas passage 11 flows into the arc region on the gas passage side. The first opening 10 flows into the gas passage 11 on the arc region side of the second opening 12, and the second opening 12 flows into the gas passage 11 on the arc region side of the first opening 10.