Patent ID: 7855136

Claim:
A flip chip mounting method for implementing a semiconductor chip to a circuit substrate, comprising: providing a plurality of semiconductor elements on the semiconductor chip including a silicon substrate; providing a plurality of pads, each of which is formed on the silicon substrate and electrically connected to at least one of the semiconductor elements; providing a first insulating layer having an opening over each one of the pads; providing a first wiring layer on the first insulating layer, the first wiring layer electrically connected to the pads and having connecting parts; providing a second insulating layer formed on the first wiring layer and having openings over the connecting parts of the first wiring layer; providing electrically functioning solder bumps, each of which is formed on one of the openings of the second insulating layer with electrically connecting to one of the pads via the first wiring layer; providing dummy bumps, each of which is formed on one of the openings of the second insulating layer without electrically connecting to the pads; placing the semiconductor chip onto the circuit substrate; and fastening the semiconductor chip to the circuit substrate by thermal reflowing, the fastening including preventing deformity of the chip by supporting the chip with the dummy bumps.