Patent ID: 7795075

Claim:
A flip chip mounting method by a no-flow underfill in which a resin is pre-coated on a substrate, and, thereafter, a semiconductor with bump is mounted on the substrate to join a pad electrode on the substrate to the bump, wherein a flip chip mounting method by a no-flow underfill comprises a level control function wherein the substrate is placed on an upper surface of a base of a reflow jig, a resin highly filled with the filler is applied to the substrate, the semiconductor with bump is mounted on a predetermined position of the substrate, a heavy weight larger than an overall size of a product of the substrate is placed on an upper portion of the semiconductor, a spacer is interposed between a lower surface of the heavy weight and an upper surface of the base to regulate an amount of press force of the heavy weight, and horizontal movement of the heavy weight is regulated by a positioning guide upright standing on the upper surface of the base.