Patent ID: 8501545

Claim:
A method of assembling a composite semiconductor device comprising a semiconductor die, a package substrate, and a solder material positioned between a contact structure of said package substrate and a contact structure of said semiconductor die, the method comprising: exposing said composite device to a device heating process in a processing environment at a process temperature so as to melt said solder material, wherein said process temperature is adjusted to a first temperature level that is greater than a melting temperature of said solder material; and exposing said composite device to a device cooling process in said processing environment so as to solidify said melted solder material, said device cooling process comprising: performing a first cooling step that comprises decreasing said process temperature in said processing environment from said first temperature level to a second temperature level that is less than said melting temperature of said solder material; after performing said first cooling step, performing at least a first heating step substantially without holding said process temperature in said processing environment at said second temperature level, said at least said first heating step comprising increasing said process temperature in said processing environment from said second temperature level to a third temperature level; and after performing said at least said first heating step, performing a second cooling step that comprises decreasing said process temperature in said processing environment from said third temperature level to a fourth temperature level that is less than said second temperature level.