摘要:
Obtained are fine-pitched pad electrodes and also solder bumps with a large amount of solder and a less difference in the amount. First, in an inert liquid (13) in a liquid tank (11), a substrate (20) is positioned with a surface (21) facing up. Subsequently, the inert liquid (13) containing solder fine particles (14) is fed from a solder fine particle forming unit (15) to the liquid tank (11) and the solder fine particles (14) are dropped from a supply pipe (16) onto the substrate (20) in the inert liquid (13). The solder fine particles (14) naturally fall down by the gravity, thereby reaching the substrate (20). The solder fine particles (14) reached on the pad electrodes on the substrate (20) stay there due to the gravity, and spread on the surfaces of the pad electrodes after the solder wet time, thereby forming solder coating.
摘要:
There is here provided an image display apparatus that adjusts a change of a drive condition resulting from an electrical resistance of a matrix wiring of a display panel scarcely using a hardware. The apparatus has an adjusted image data calculation unit that generates adjusted image data that is the image data to which adjustment is applied for relaxing an influence of a voltage drop caused by the electrical resistance of a row wiring for the input image data of one horizontal scan interval, wherein the adjusted image data calculation unit is provided with means for discretely forecasting and calculating a voltage drop amount in the space and time directions, to be generated on the row wiring during the one horizontal scan interval corresponding to input image data and means for calculating the adjusted image data in which adjustment is applied to the image data.
摘要:
In order to obtain a satisfactory image by making a peak luminance of an image to be displayed large and suppressing an occurrence of unnecessary period, there is provided a display driving method for driving a display with a plurality of scanning wirings and a plurality of modulation wirings, comprising: a step of supplying a scan selection signal to a scanning wiring selected out of the plural scanning wirings for each horizontal scanning period; and a step of supplying a modulation signal modulated in accordance with image data to the plural modulation wirings for each horizontal scanning period, in which the selection period of the scan selection signal varies between at least two horizontal scanning periods in a vertical scanning period.
摘要:
There is disclosed a semiconductor device comprising a capacitive element group having a plurality of unit capacitive elements. At least one lead-out electrode of bottom electrodes of the unit capacitive elements of the capacitive element group is disposed along a circumference going around top electrodes as a whole of the capacitive element group, and a given capacitive element is connectable to the capacitive element group, the given capacitive element having a capacitance value that is set to eliminate effects of parasitic capacitance of at least the capacitive element group. Furthermore, the given capacitive element may consist of a capacitive element group.
摘要:
The present invention is to provide an image display apparatus capable of properly correcting or adjusting, with small-scale hardware, variations in drive conditions due to electric resistance of matrix wiring on a display panel. The image display apparatus includes an adjusted image data calculation unit 14 for calculating adjusted image data as image data that has been compensated for the influence of voltage drop caused by resistance of at least the row wiring and a scan unit. The image display apparatus also includes an amplitude adjustment unit having a function for adjusting the amplitude of adjusted image data Dout, and a modulator 8 the takes in the adjusted image data with the amplitude adjusted and outputs a modulation signal to the column wiring.
摘要:
There is disclosed a semiconductor device comprising a capacitive element group that has a plurality of unit capacitive elements. The unit capacitive element has a capacitance value that is set so as to reduce an error between a target capacitance value of the capacitive element group and a combined capacitance value of the plurality of unit capacitive elements making up the capacitive element group. Furthermore, a plurality of the capacitive element groups can be formed in the semiconductor device.
摘要:
A digital distance relay for deciding whether a fault point is within a stipulated operation region by obtaining an impedance to the fault point. The relay comprises: means for deciding whether the impedance is within a specified region by applying a value proportional to the relative phase; and means for deciding the fault point is within the stipulated operation region if: (a) when the load current indicates a sending direction, the positive-phase resistance and reactance are within a stipulated region based on stipulated positive-phase resistance and reactance, and the impedance is decided within the specified region; or (b) when the load current indicates a receiving direction, the positive-phase resistance and reactance are within a stipulated region based on stipulated positive-phase resistance and reactance, or the impedance is decided within the specified region.
摘要:
A rotary engine is disclosed having a rotor and rotor housing for mounting therewithin said rotor for rotation within an inner wall of the rotor housing, a gap between the rotor and the inner wall of the rotor housing defining an engine compartment. A plurality of telescopic sealing blades which can elongate and shorten with respect to the rotor are attached, respectively at positions substantially equally spaced on the circumference of said rotor so that the sealing blades elastically contact to the inner wall of the rotor housing, the sealing blades sliding along the inner wall of the rotor housing during the rotation of the rotor and separating the engine room in an airtight manner so that the suction of fuel gas, its succeeding compression and the exhaust of burnt gas are carried out. The engine has a compression chamber and an expansion chamber, defined by two adjacent sealing blades, respectively. In an overexpansion rotary engine, a volume of the expansion chamber is greater than a volume of the compression chamber.
摘要:
In an apparatus and method of applying a protecting film to a semiconductor wafer, a semiconductor wafer is placed on top of a table, a protecting film is pressed onto the wafer by a press roller biased toward the table, the table is moved to apply the protecting film to the wafer, a tension roller arranged upstream from the press roller applies a tensile force to the protecting film in a direction opposite the feeding direction of the film, the tensile force of the tension roller is first set at a relatively high value at the beginning of the application of the protecting film to place the protecting film in a stretched state and then at a relatively small value during the application of the protecting film to prevent the portion of the protecting film which has not yet been applied from coming into contact with the wafer, and then, after the protecting film has been applied to the wafer, a cutting blade is used to cut the protecting film to match the shape of the semiconductor wafer by first moving the cutting blade in the Y direction to cut from an angular portion C.sub.1 of the orientation flat portion to an angular portion C.sub.2, then rotating the table while moving the cutter and the table to align the cutting direction of the cutting blade with the tangential direction of the circumferential portion of the semiconductor wafer, and then rotating the table to cut the protecting film along the circumferential portion of the semiconductor wafer.
摘要:
A first electromagnetic induction pump system includes a first plurality of electromagnetic induction pumps, arranged in the direction parallel to the width of workpiece. The first plurality of electromagnetic induction pumps extend vertically along a first vertical plate portion at a workpiece inlet side of a single reservoir. A second electromagnetic induction pump system includes a second plurality of electromagnetic induction pumps, arranged in the direction parallel to the width of workpiece. The second plurality of electromagnetic induction pumps extend vertically extends along a second vertical plate portion at the workpiece outlet side of the reservoir. Brazing filler metal is ejected upward in waves by the electromagnetic induction pump systems to braze workpieces carried by the ejected waves into and out of the device. Using a plurality of electromagnetic induction pumps along the width of the workpiece produces waves which are wide enough to cover the width of workpiece and to have a uniform height.