Patent ID: 9673177
Date: 2017-06-06
CPC Classifications: H01L

Claim:
1. A method of assembling a chip system, comprising: providing a top chip stack element having two major surfaces, the top chip stack element comprising a top solder pad on a plane of a first top surface; providing a bottom chip stack element having two major surfaces, the bottom chip stack element comprising a bottom solder pad on a plane of a first bottom surface; providing a solder material on one or more of the top solder pad and the bottom solder pad; applying spherical soluble standoffs to the plane of the first bottom surface, wherein the spherical soluble standoff is a salt; pre-aligning the first chip stack element and the second chip stack element to bring the top solder pad in proximity to the bottom solder pad to form a pre-melt chip assembly; raising the temperature to a temperature above the melting temperature of the solder material to form a connected chip assembly; cooling the connected chip assembly to re-solidify the solder material; and removing the spherical soluble standoffs from the connected chip assembly.