Patent ID: 8023282

Claim:
A hybrid structure of multi-layer substrates, the hybrid structure comprising: a first multi-layer substrate, stacking up a plurality of first metal layers, a plurality of first dielectric layers alternately and having a plurality of VIAs, wherein a border district of at least one first metal layer connects with a border district of the corresponding first dielectric layer and the border districts are separated from adjacent first metal layers and adjacent first dielectric layers; and a second multi-layer substrate, stacking up a plurality of second metal layers and a plurality of second dielectric layers alternately, wherein a border district of at least one second metal layer connects with a border district of the corresponding second dielectric layer of the second metal layer and the border districts are separated from adjacent second metal layers and adjacent second dielectric layers, and wherein the VIAs are located at the border districts of the first dielectric layers and each VIA has electric conductor therein to connect at least one first metal layer with at least one second metal layer to form a connection section; wherein the first multi-layer substrate and the second multi-layer substrate are flexible multi-layer interconnection substrates and the connection section is also flexible.