Patent ID: 9679872
Date: 2017-06-13
CPC Classifications: H01L,H05K

Claim:
1. A connection structure, comprising: a conductive unit, the conductive unit having a rim, the conductive unit comprising a flange, a slanting side wall, and a base; a solder bump, the solder bump being located on the conductive unit, the solder bump being in direct contact with the conductive unit; a first insulating layer, the first insulating layer being located under the flange; a second insulating layer, the second insulating layer being located under the base of the conductive unit, the second insulating layer having a first via zone; a third insulating layer, the third insulating layer being located under the second insulating layer, the third insulating layer having a second via zone; and a plurality of vias located in the second via zone, wherein the second via zone is within a vertical projection of the conductive unit, the connection structure comprises a plurality of first vias located in the first via zone, and the plurality of first vias are not located beneath the base of the conductive unit.