摘要:
As a die bonding apparatus for establishing electrical connection between electrodes on one side of a semiconductor chip and associated electrodes on a package comprises a pair of pinching and pressing mechanisms having a pair of pinching and pressing surfaces adapted to be moved closer relative to each other and so as to pinch and press semiconductor chip and package and at least one remote center mechanism provided in at least one of the pair of pinching and pressing mechanisms, in such a manner that a remote center thereof is positioned in the pinching and pressing surface of above-mentioned one pinching and pressing mechanism, for adjusting orientations of the pair of pinching and pressing surfaces to make the orientations thereof correspond to those of both surfaces of the semiconductor chip and the package at the time of the pressing and pinching operation all of the electrodes on one side of the semiconductor chip are thereby uniformly pressed against the corresponding electrodes on the package without any laterally shifting movement thereof even if the chip is inclined relative to the package because the sizes of bumps of the electrodes on the chip are not constant.
摘要:
The present invention relates to a multi-pin chip mounting method and apparatus based on a TAB (Tape Automated Bonding) system in which leads formed on a tape and bumps formed an IC chip are aligned with each other and compress-bonded to each other. An IC chip having bumps formed on a surface thereof and inner leads formed on a carrier tape are disposed opposite to each other at a bonding station. A position of the IC chip on a stage is detected through the inner leads at the bonding station to determine the amount of correction of position of the stage. The inner leads and the IC chip are aligned with each other on the basis of the determined correction amount and are thereafter bonded to each other.
摘要:
There is provided a heat exchanger realizing downsizing, weight saving, and cost reduction in comparison with a conventional heat exchange element or heat exchanger. The heat exchanger is provided with a first fluid flow portion formed of a honeycomb structure having a plurality of cells partitioned by ceramic partition walls and extending from one end face to another end face in an axial direction to allow a heating medium as a first fluid to flow therein, and a second fluid flow portion formed of a casing containing the honeycomb structure therein, the casing having an inlet and an outlet for a second fluid, and the second fluid flowing on an outer peripheral face of the honeycomb structure to receive heat from the first fluid.
摘要:
The ceramic plasma reactor includes: a plurality of unit electrodes each of which comprises a plate-shaped ceramic dielectric body 4 and a conductive film 3 embedded in the ceramic dielectric body superimposing them each other with a gap which works as a discharge portion 11, and preferably being formed by sandwiching one unit electrode 2b having no through holes 15 by two unit electrodes having plural through holes 2a there between. A partition wall plate 9 is provided by facing one of unit electrodes on a side opposite to the gap and being held by a holding member 7 at a predetermined distance so as to form there between a gas introducing-circulating portion 21 for introducing and circulating gas in the through-holes 15 so as to send gas introduced to the gap between the unit electrodes as a discharge portion by applying a voltage thereto to generate plasma.
摘要:
An electromagnetic valve has a fixed core, a movable core, a coil attract the fixed core and the movable core each other, a valve body and a valve seat member including a funnel-shaped valve seat surface and an inlet path. The flow path is closable by retreat/advance of the valve body relative to the valve seat surface. The valve body includes a semi-spherical seal portion and a stem portion extending from the seal portion towards the movable core, a diameter of an end portion of the seal portion at the stem portion side is larger than a diameter of an end portion of the stem portion at the seal portion side. A space is defined in an area located on an extended line extending from a small diameter end portion to a large diameter end portion of the valve seat surface.
摘要:
A reactor includes a reaction vessel having an inlet for to-be-reformed gas and an outlet for reformed gas, a pair of electrodes for plasma generation, disposed in the internal space of the reactor vessel so as to face each other, a power source for applying a voltage to the pair of electrodes, and a catalyst for promoting the reforming reaction of to-be-reformed gas, wherein one of the pair of electrodes is a linear electrode, the other of the pair of electrodes is a honeycomb electrode made of a conductive ceramics, the catalyst is loaded on the partition walls of the honeycomb electrode, and the ratio of the maximum outer diameter d1 of each cell-opening end face of the honeycomb electrode to the length L1 of the honeycomb electrode in the cell-extending direction is in a range of 0.50 to 1.2.
摘要:
A lithium secondary battery using lithium manganese oxide as a positive active material and having excellent charge and discharge cycle properties.As a positive active material of a lithium secondary battery, lithium manganese oxide having a cubic spinel structure, in which the strength ratio (P2/P1 strength ratio) of the primary endothermal peak (P1) appearing around 950° C. and the secondary endothermal peak (P2) appearing around 1100°0 C. in differential thermal analysis is under 1, is used.
摘要:
In AlN crystal grains constituting a sintered body, is contained: 150 ppm-0.5 wt. %, preferably at most 0.1 wt.%, of at least one rare earth element (as oxide thereof); at most 900 ppm, preferably at most 500 ppm of at least one metal impurity except rare earth elements; and preferably at least 0.5 wt. % of oxygen measured by an electron probe X-ray microanalyzer. The grains have an average grain diameter of preferably at least 3.0 .mu.m and show a main peak in the wavelength range of 350-370 nm of spectrum obtained by a cathode luminescence method. The sintered body composed of AlN crystal grains has a volume resistivity at room temperature of at most 1.0.times.10.sup.12 .OMEGA..multidot.cm.
摘要:
The present invention relates to a method for preparing carbon fibers from a pitch by treating the pitch fibers spun from a pitch with a gaseous mixture of air and a gaseous oxidizing agent in an infusibilizing furnace divided into at least two chambers arranged in series and then carbonizing the thus treated pitch fibers into carbon fibers.
摘要:
A plasma processing apparatus includes a main body that has an inlet for a purification target gas and an outlet for a purified gas, an insulator honeycomb that includes a plurality of cells that are partitioned by a partition wall and serve as gas passages, a conductor honeycomb that is disposed to be able to transmit heat to the insulator honeycomb, a discharge electrode that is disposed opposite to the conductor honeycomb and forms a pair of electrodes with the conductor honeycomb, and a pulse power supply that applies a pulse voltage between the pair of electrodes, the insulator honeycomb, the conductor honeycomb, and the discharge electrode being disposed in an inner space of the main body. The plasma processing apparatus generates plasma by applying a pulse voltage to promote purification of the purification target gas in the insulator honeycomb by utilizing heat generated by plasma.