Abstract: An integrated-circuit device includes a rigid substrate island having a main substrate surface with a circuit region circuit elements and at least one fold structure. The fold structure is attached to the substrate island and is unfoldable from a relaxed, folded state to a strained unfolded state. The fold structure contains at least one passive electrical component. The fold structure further has in its folded state at least one surface with an area vector that includes a non-vanishing area-vector component in a direction parallel to the main substrate surface, which area-vector component is diminished or vanishes when deforming the fold structure from the folded into the unfolded state.

Abstract: An integrated-circuit device is provided, which comprises a rigid substrate island having a main substrate surface with a circuit region circuit elements and at least one fold structure. The fold structure is attached to the substrate island and is unfoldable from a relaxed, folded state to a strained unfolded state. The fold structure contains at least one passive electrical component. The fold structure further has in its folded state at least one surface with an area vector that includes a non-vanishing area-vector component in a direction parallel to the main substrate surface, which area-vector component is diminished or vanishes when deforming the fold structure from the folded into the unfolded state. The fold structure provided by the present invention allows fabricating the integrated-circuit device with small lateral extensions and thus takes up a particularly small amount of chip area, which reduces the cost per device.

Abstract: The present invention relates to an integrated-circuit device comprising a multitude of separate rigid substrate islands (202 to 208) with circuit elements, a respective substrate island being connected to respective neighbor substrate islands by respective elastically deformable connections 210 to 222), which contain at least one respective signaling layer that is made of an electrically conductive material. At least one elastically deformable connection between substrate islands has a signaling layer, which is not electrically connected and thus forms a dummy signaling layer (210a to 210c), and the elastically deformable connections, which connect a respective substrate island to respective neighbor substrate islands along a first direction, have an elastic deformability in the first direction governed by respective moduli of elasticity, the ratio of which is between 0.5 and 2.0. This reduces the inhomogeneity of strain in the network of substrate islands that is formed by the integrated-circuit device.