Patent ID: 7531385
Filing Date: 2009-05-12
Classification: H01L,H05K,Y10T

Abstract:
1. A flip chip mounting method for disposing a semiconductor chip having a plurality of electrode terminals in facing relation to a circuit board having a plurality of connecting terminals and electrically connecting the connecting terminals of the circuit board to the electrode terminals of the semiconductor chip, the flip chip mounting method comprising: a first step of supplying a resin containing conductive particles and a gas bubble generating agent into a space between the circuit board and the semiconductor chip; a second step of heating the resin to generate gas bubbles from the gas bubble generating agent contained in the resin; a third step of pressing the semiconductor chip against the circuit board; and a fourth step of curing the resin, wherein, in the second step, the resin is pushed toward the outside of the gas bubbles generated from the gas bubble generating agent by growth of the gas bubbles and self-assembled between the connecting terminals of the circuit board and the electrode terminals of the semiconductor chip, in the third step, the conductive particles contained in the resin self-assembled between the terminals come in contact with each other to provide electrical connection between the terminals, and in the fourth step, the resin between the terminals is cured to fix the semiconductor chip to the circuit board.