Methods for embedding conducting material and devices resulting from said methods

摘要

A method of producing a composite substrate involves, providing a flexible sacrificial layer (2), producing a patterned conducting layer or stack of conducting layers (3) on a flexible sacrificial layer (2), bending the sacrificial layer into a predetermined shape, providing a stretchable and/or flexible material (4) on top of and in between features of the patterned layer while the sacrificial layer is bent. The patterned features can be shaped such that they are anchored into said stretchable and/or flexible material. This can enable the patterned conductor to be anchored into this stretchable and/or flexible material in a more reliable way..Bending prior to depositing the flexible and/or stretchable material reduces the risk that the conducting material jumps out of the surrounding flexible and/or stretchable material during bending. Also this shape will be (partially) maintained after removing the sacrificial substrate.