Patent ID: 9412686
Filing Date: 2016-08-09
CPC Classification: H01L

Claim Text:
1. An interposer structure, comprising: a first dielectric layer, comprising a first surface and a second surface opposite to the first surface, wherein the first dielectric layer comprises a multilayer structure comprising a third dielectric layer and a fourth dielectric layer on the third dielectric layer; a conductive pad disposed in the first dielectric layer, wherein a portion of the conductive pad is disposed in the fourth dielectric layer, a top surface of the portion of the conductive pad is exposed from the first surface of the first dielectric layer, the conductive pad further comprises a plurality of connection feet, and the connection feet protrude from a bottom surface of the portion of the conductive pad to the second surface of the first dielectric layer, wherein the conductive pad and the connection feet are monolithic and the connection feet protrude from the fourth dielectric layer and penetrates through the third dielectric layer; a bump, disposed on the second surface of the first dielectric layer, the bump directly contacting to the connection feet.