Patent ID: 8123965

Claim:
A method for manufacturing interconnect structures with buffering ability, comprising steps of: (a1) disposing a polymer of low-dielectric constant on a metal substrate by a lamination method; (b1) etching the polymer to form a plurality of etch holes thereon while enabling the plural etch holes to be spaced from each other by a specific interval; (c1) forming a metal pillar by filling up each etch hole with a metal using a means of electroplating while enabling the formed metal pillar to connect to the metal substrate electrically; (d1) forming a flat metal layer on the polymer and the metal pillars by a means selected from the group consisting of: an over electroplating method and a lamination method; and (e1) using a mechanical pressurized force to punch the structure of the aforesaid steps so as to form a plurality of interconnect structures thereby, wherein the step (d1) includes forming the flat metal layer covering an entire top surface of the polymer, and wherein the top surface is farther from the metal substrate than a bottom surface of the polymer.