Abstract: A manufacturing method of a three-dimensional stretchable electronic device includes: preparing an aluminum mold for producing a substrate having one or more protrusions on an upper side and a lower side thereof; forming a path for a connection line for connecting the protrusions of the substrate using a wire; introducing a first polymer for forming the protrusions of the substrate into a predetermined portion of the aluminum mold; removing the wire and the three-dimensional stretchable substrate from the aluminum mold; injecting a liquid metal into the path for a connection line from which the wire was removed, thus manufacturing a three-dimensional stretchable substrate having a connection line; and transferring elements to the protrusions of the three-dimensional stretchable substrate having the connection line and connecting the elements to the connection line, thus connecting the elements to each other.

Abstract: Disclosed herein are a three-dimensional stretchable electronic device and a manufacturing method comprising the same, wherein the three-dimensional stretchable electronic device is configured such that a connection line is positioned therein and thus can be protected from the outside, and the connection line is made of a liquid metal so there is no change in volume of the connection line upon stretching. Additionally, elements can be transferred to both sides of the substrate, thus increasing the degree of integration.