Patent ID: 8482931

Claim:
A package structure comprising: a first printed wiring board having a top surface on which a plurality of electronic components including at least one first electronic component are mounted; a second printed wiring board stacked over the top surface of the first printed wiring board; and a plurality of connecting members for mechanically connecting the first and second printed wiring boards while maintaining a constant gap therebetween, wherein: the connecting members include a plurality of first cured resins bonding a top surface of the at least one first electronic component to a bottom surface of the second printed wiring board, and a plurality of second cured resins directly bonding the top surface of the first printed wiring board to the bottom surface of the second printed wiring board, the plurality of first cured resins and the plurality of second cured resins have a truncated cone shape, a base area of the plurality of second cured resins is larger than a base area of the plurality of first cured resins, a number of the plurality of first cured resins is at least four, a number of the plurality of second cured resins is at least four, and the plurality of first cured resins and the plurality of second cured resins are positioned line-symmetric.