Patent ID: 9287230
Filing Date: 2016-03-15
CPC Classification: H01L

Claim Text:
1. A semiconductor chip assembly comprising: a semiconductor chip having pads; a substrate having pads aligned to receive the semiconductor chip, wherein at least one of the semiconductor chip pads and substrate pads have solder bumps, the solder bumps being deformed against the substrate pads and the semiconductor chip pads; and an underfill material applied to fill a gap between the semiconductor chip and the substrate, wherein the underfill material envelopes both the deformed solder bumps and the substrate pads, the underfill material not penetrating between the deformed solder bumps, the semiconductor chip pads, and the substrate pads based on a compression force causing the solder bumps to be deformed against the substrate pads and the semiconductor chip pads, and wherein at least one of the solder bumps have not been melted or reflowed to make a metallurgical bond between the semiconductor chip pads and the substrate pads, and wherein at least another one of the solder bumps have been melted or reflowed to make a metallurgical bond between the semiconductor chip pads and the substrate pads.