32results about How to "Will not cause misalignment" patented technology

The invention discloses a semiconductor package body realizing internal connection by connecting sheets. The semiconductor package body comprises a plurality of chips, a plurality of substrates, the connecting sheets and a plastic package body, wherein each chip has a plurality of top contact areas and a plurality of bottom contact areas; the substrates are used for accommodating the chips; the bottom contact areas of the chips are electrically connected with the substrates; the substrates are provided with a plurality of substrate outer pins; the connecting sheets are connected with the plurality of chips and the plurality of correspondingly distributed top contact areas of the plurality of chips so as to fix the plurality of chips; the ends of the connecting sheets are used as pins of the chips and connected with the exterior; and the plastic package body is used for packaging the chips, the substrates and the connecting sheets. In the process, one or more connecting sheets are fixedly connected with the plurality of chips and then packaged; and the connecting sheets are separated by cutting or grinding the top of the package finally. Due to the fixed connection of the connecting sheets, the influence of the dislocation of the chips on the circuit performance of the chips during manufacturing can be avoided.

The invention discloses a locating hole structure of a soft and hard multilayer circuit board of a circuit via hole and a setting method of a locating hole. The locating hole structure is small in positional deviation and high in precision and is punched by a common target punching machine. A top layer window hole with the hole diameter being larger than that of the locating hole is formed in a top layer plate which is arranged at the position of a to-be-drilled locating hole in the multilayer circuit board, an exposed light transmitting target ring with the hole diameter being smaller than that of the locating hole is arranged on a soft plate which is surrounded by the top layer window hole, a lightproof target is arranged at the center of the light transmitting target ring, and a bottom layer window hole with the hole diameter being smaller than that of the locating hole and capable of enabling the light transmitting target ring to be exposed is formed in a bottom layer plate corresponding to the light transmitting target ring. A soft and hard combined plate of the structure is placed on the common target punching machine, and after the target is recognized, the locating hole is subjected to target punching. The soft plate which can be seen from the top layer window hole in a downward mode is completely supported on the bottom layer plate, the rigidity of the hole peripheral wall of the locating hole can be greatly improved, and when a dowel of the target punching machine is inserted into the locating hole, the locating hole cannot be deformed or enlarged or cannot deviate.

The invention relates to the field of solar cell production, and discloses a phosphorus doping control method for an emitter of a crystalline silicon solar cell. The method is carried out according tothe following steps of (1) first low-temperature oxidation; (2) first deposition; (3) second low-temperature oxidation; (4) second deposition and first propulsion; and (5) third deposition and secondpropulsion. According to the phosphorus doping control method, the peak concentration is improved through low-temperature oxidation, deposition and low-temperature oxidation, meanwhile, lattice dislocation is not caused, and then the surface of the cell is passivated through double deposition and propulsion, thereby obtaining better photoelectric conversion efficiency.

The invention discloses a rectangular lithium battery with an improved packing structure. One end of a rectangular shell of the rectangular lithium battery is fixed with a reinforcing plate. An electrical contact and a safety valve are fixed on the reinforcing plate. One side perpendicular to the reinforcing plate is an opened wide mouth, through which a wound or laminated electrical core can be parallely filled into the rectangular shell. After the electrical core enters the shell, peripheries of the shell bottom and the rectangular shell's opened wide mouth are welded and sealed. The process of the electrical core entering the shell is performed without extrusion and pressure, and dislocation of anode and cathode pieces will not be caused. By the improvement of the packing structure of the rectangular lithium battery, security hidden danger caused by disadvantages of an assembly technology can be avoided, and safety performance of lithium battery can be raised.

The invention discloses an axial fixed block which comprises a base plate and a locating block, wherein the locating block is welded on the base plate; a shaft hole perpendicular to the base plate in the axial direction is formed in one end surface of the locating block; U-shaped grooves extending in the axial direction are formed in two side walls of the shaft hole; a slope surface is arranged on the edge of the shaft hole; a raised check block is arranged on the surface of the locating block directly facing the slope surface; a locating column, perpendicular to one side surface of the locating block, is arranged on the side surface of the locating block, and is positioned on the common center surface of the check block and the slope surface; and fixed through holes are formed in four ends of the base plate.

The invention discloses a novel combined trimming machine tool which structurally comprises an emergency stop system, a spindle, a fixing seat, a tool rest, a variable-speed hand wheel, a tailstock, lead screw fixing seats, lead screws, a lathe, a hand wheel, a slide carriage tank, a second hand wheel and a small slide carriage. The emergency stop system is mechanically connected with the spindleand is mounted at one end of the lathe, the tailstock is mounted at the other end of the lathe, and the tool rest is perpendicularly fixed onto the tailstock and is mechanically connected with the variable-speed hand wheel. The novel combined trimming machine tool has the advantages that the novel combined trimming machine tool is provided with pulley limit mechanisms, movable touch mechanisms, auxiliary support devices, a power-off structure and a power supply circuit system, handles can rotate if the spindle falls off after rotating for excessively long time, accordingly, a motor can immediately stop rotating, objects fixed onto the motor can be prevented from being separated from the motor to injure staffs due to rotational inertia of the motor, and the safety of the staffs can be guaranteed; the problems of breakdown and difficulty in maintenance of existing emergency stop systems due to dislocation of internal structures when existing motors at the high speeds stop can be assuredly solved by the aid of the pulley limit mechanisms.

The invention discloses a semiconductor package for internal connection with connecting sheets, comprising: a plurality of chips, each of which has a plurality of top contact areas and bottom contact areas; a plurality of substrates for placing the The chip, the bottom contact area of ​​the chip is electrically connected to the substrate, and the substrate is provided with a plurality of external pins of the substrate; the connecting piece, the connecting piece is connected to a plurality of chips, and is used to connect a plurality of chips correspondingly arranged a plurality of top contact areas, thereby fixing the plurality of chips, and the ends of the connecting sheets are connected to the outside as the pins of the chips; a plastic package is used for packaging chips, substrates, and connecting sheets. The present invention In the process of manufacturing, multiple chips are fixedly connected through one or more connecting pieces, then packaged, and finally the connecting pieces are separated by cutting or grinding on the top of the package. Due to the fixed connection function of the connecting pieces, the present invention avoids the need for chips to be processed in the process. Misalignment during the process affects the circuit performance of the chip.

The invention discloses a laminating device which is used for laminating sheets and is provided with a loading component, the loading component is provided with a loading surface for loading and pressing the sheets, an air suction hole is formed in the loading surface, the laminating device is further provided with a suction power unit, and the suction power unit can enable the air suction hole tosuck air. By the adoption of the laminating device, the sheet is not prone to floating or tilting, the accuracy of the positioning position of the sheet is guaranteed, and the precision of machiningoperation is guaranteed.

The invention relates to a movable frame for paper cup body cutting and storing. The movable frame comprises a first movable rod, a driving device, a horizontal extensible arm, a horizontal clamping strip, a vertical clamping strip, elastic inserts and a fixing rod; the driving device is provided with a driving box and an extensible rod arranged on the driving box and the extensible rod is strip shaped; a chute is arranged on the sidewall of the extensible rod; a hinge joint part is arranged in the chute; and one end of the hinge joint port is inserted into the chute. The movable frame for paper cup body cutting and storing is ingeniously improved; the elastic inserts disposed on the horizontal extensible arm and the vertical clamping strip can be adapted to overlap when the height of thecup paper is larger than the movable frame, and the overlapped cup paper is not misaligned during use; by arranging elastic balls, the friction can be reduced and the hum with a bottom plate is eliminated; and at the same time, the overlapping cups are easily removed after cutting, so that the convenience of use is increased.