Abstract:
After preliminary supply of an equal amount of solder to all of stud-bumps of a semiconductor part, establishing solder connection between the stud-bumps and connecting pads of a circuit substrate. A method for mounting a semiconductor part on a circuit substrate is provided, which includes the steps of preparing the semiconductor part (10) having a surface thereof provided with a plurality of stud-bumps (12), preparing a solder substrate (13) having a surface thereof on which solid-solders (14) corresponding to respective of the plurality of stud-bumps (12) are arranged, preparing the circuit substrate (20) having a surface thereof provided with connecting pads (21) corresponding to respective of the plurality of stud-bumps, attaching, to respective tip ends of the plurality of stud bumps, the corresponding solid-solders on the solder substrate, separating the solid-solders attached to the tip ends of the stud-bumps from the solder substrate, contacting the solid-solder attached to respective of the tip ends of the stud-bumps with the corresponding connecting pads, and melting the solid-solders contacted with the corresponding connecting pads thereby establishing solder connection between respective of the stud-bumps and the corresponding connecting pads.
Abstract:
PROBLEM TO BE SOLVED: To decrease the thickness of a semiconductor part (chip) on a substrate to a specified value, regardless of variation in thickness of a substrate, in a semiconductor product. SOLUTION: In a semiconductor component installed on a base plate 32, a surface 30 of a semiconductor part 29 on a substrate 28 is set at a specified height h from a surface 33 of the base plate 32. By machining the surface 30 of the semiconductor part 29 that has been adjusted to the specified height h, the thickness of the semiconductor part 29 on the substrate 28 is made to be a specified value without exception. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a laminated wiring board where the flip chip of an integrated circuit chip can easily be mounted, and a distance from a resistor and a capacitor from the integrated circuit chip can be shortened, and to provide a manufacturing method of the board. SOLUTION: Via holes 20 and 141 to 143, through which the bump electrode 30 of the integrated circuit chip can be inserted are formed at a pitch that is the same as that of the bump electrode 30. Metal films 22 and 23 formed inside the via holes 20 and 141 to 143 and 162 are electrically connected to circuit layers 11, 12, 26 and 27. The built-in capacitor 32 is formed by the prescribed region 101 of a core insulating layer 10 and prescribed regions 112 and 126 of inner circuit layers 11 and 12, which sandwich the region 101 and face each other. The built-in resistor 13 is formed in the inner circuit layer 12. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To grip a chip by a head to solder keeping the molten solder by with molten. SOLUTION: Solder bumps 3 formed on a chip 1 face the electrodes 11 on a mounting board 10. Then the solder bumps 3 are heated to their melting points by heating a heating block 21 provided on the rear surface side of the chip 1. It is preferable to provide another heating block 22 on the rear surface of the board 10. With the solder bumps 3 molten, the bumps 3 are soldered to the electrodes 11 by bringing the bumps 3 into contact with the electrodes 11.