Patent ID: 8906747

Claim:
A method of attaching a lid to a base to form a cavity-type semiconductor package, said lid being shaped to include a cavity, a semiconductor die being coupled to a surface of said base within an area delineated by a first bonding perimeter of said base, said lid having a second bonding perimeter, and said method comprising: applying an electrically conductive epoxy adhesive material to a portion of at least one of said first and second bonding perimeters such that a remaining section of both of said first and second bonding perimeters is without said electrically conductive epoxy adhesive material; placing said lid on said base so that said second bonding perimeter abuts said first bonding perimeter and a gap is produced between said base and said lid at a location where said remaining section is without said electrically conductive epoxy adhesive material; heat curing said electrically conductive epoxy adhesive material, said heat curing occurring at a first temperature of at least one hundred seventy degrees Celsius, wherein during said heat curing operation, air inside said cavity expands in response to said first temperature and said gap allows venting of said air from said cavity; and following said heat curing, applying a second adhesive material to said remaining section to close said gap.