An interconnection layer carrying structure for transferring an interconnection layer onto a substrate is disclosed. The interconnection layer carrying structure includes a support substrate, a release layer on the support substrate; and an interconnection layer on the release layer. The interconnection layer includes an organic insulating material and a set of pads embedded in the organic insulating material. The set of the pads is configured to face towards the support substrate. The support substrate has a base part where the interconnection layer is formed and an extended part extending outside the base part.