Seoul National University

Junghwan Byun

Yongtaek Hong

Byeongmoon Lee

Eunho Oh

Disclosed is a stretchable substrate including: a via configured to provide an electrical connection between one surface and the other surface of the stretchable substrate; and a buffer shell positioned between the via and the stretchable substrate and having a Young's modulus value that is greater than a Young's modulus value of the stretchable substrate and smaller than a Young's modulus value of the via.

Method for forming flexible substrate including via, and flexible substrate having via

Disclosed is an apparatus for fabricating a stretchable electrical circuit, including: a stretching device configured to stretch a mounted stretchable substrate in two different directions; a marking device configured to mark a mark on the stretchable substrate; an image device configured to obtain an image of the stretchable substrate on which a plurality of alignment marks are marked by the marking device; and a control device configured to control the stretching device, the image device, and the marking device. The control device forms a first axis and a second axis using the plurality of alignment marks marked on the image obtained by the image device and marks one point of a surface of the stretchable substrate with coordinates made by the first axis and the second axis using the first axis and the second axis.

Apparatus for fabricating stretchable electrical circuit

A method for forming a flexible substrate having a via, according to the present embodiment, comprises the steps of: (a) arranging a mixture of conductive particles moving by means of a magnetic field, when a curable resin and the magnetic field are provided; (b) forming a material layer being cured and having flexibility; (c) arranging the conductive particles by providing a magnetic field; and (d) curing the curable resin and the material layer.

Disclosed herein are a method of fabricating a stretchable electrical circuit and an apparatus for fabricating a stretchable electrical circuit, wherein the method of fabricating a stretchable electrical circuit includes stretching a stretchable substrate, forming a plurality of alignment marks on a surface of the stretchable substrate, forming a first axis extending from a line connecting two alignment marks among the plurality of alignment marks, and a second axis perpendicular to the first axis, marking one point of the surface of the stretched stretchable substrate with coordinates made by the first axis and the second axis, and disposing electrical components using the coordinates.

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Seoul, South Korea

Junghwan Byun