Resources Contact Us Home
Flip-chip mounting method and bump formation method

Image Number 4 for United States Patent #7927997.

To provide a flip-chip mounting method and a bump formation method applicable to flip-chip mounting of a next generation LSI and having high productivity and high reliability. A semiconductor chip 20 having a plurality of electrode terminals 12 is held to oppose a circuit board 21 having a plurality of connection terminals 11 with a given gap provided therebetween, and the semiconductor chip 20 and the circuit board 21 in this state are dipped in a dipping bath 40 containing a melted resin 14 including melted solder particles for a given period of time. In this dipping process, the melted solder particles self-assemble between the connection terminals 11 of the circuit board 21 and the electrode terminals 12 of the semiconductor chip 20, so as to form connectors 22 between these terminals. Thereafter, the semiconductor chip 20 and the circuit board 21 are taken out of the dipping bath 40, and the melted resin 14 having permeated into the gap between the semiconductor chip 20 and the circuit board 21 is cured, so as to complete a flip-chip mounting body.

  Recently Added Patents
Semiconductor apparatus
Information processing apparatus, information processing method, and program
Method and apparatus for map transmission in wireless communication system
Wide viewing angle indicators for network devices
Telecommunications system and method
Semiconductor device having a first conductive member connecting a chip to a wiring board pad and a second conductive member connecting the wiring board pad to a land on an insulator covering
Organic light emitting device connection methods
  Randomly Featured Patents
Arg .sup.4 -somatostatin and analogues thereof
Method of attaching a transfer resistant RFID tag to a surface
Low voltage, optical phase modulator
Hardware implementation of network testing and performance monitoring in a network device
Fuel supply system for a vehicle including a vaporization device for converting fuel and water into hydrogen
Valve system for internal combustion engine
Method of making insulated tubular conduit
Container fuse for enhanced survivability
Face alignment via component-based discriminative search