Stretchable substrate and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-12297101-B2
Application number	US-202117343667-A
Country	US
Kind code	B2
Filing date	Jun 9, 2021
Priority date	Nov 25, 2020
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

Provided is a method of manufacturing a stretchable substrate according to various embodiments of the present disclosure in order to implement the above-described objects. The method may include forming an auxetic including a plurality of unit structures and forming one or more microstructures.

First claim

What is claimed is:

1. A method of manufacturing a stretchable substrate, the method comprising:
forming an auxetic on a fixing surface, wherein the auxetic comprises a plurality of unit structures and a plurality of microstructures, wherein: the plurality of unit structures have the same reentrant shape; the plurality of microstructures comprise first microstructures, which are protruded from inner surfaces of a respective unit structure of the plurality of unit structures; each first microstructure has a hemispherical shape; the plurality of microstructures comprise second microstructures; each second microstructure comprises a first triangle plate and a second triangle plate; a first vertex of the first triangle plate and a first vertex of the second triangle are facing each other at a distance; a second vertex and a third vertex of the first triangle are in contact with a first end surface inside the respective unit structure of the plurality of unit structures; and a second vertex and a third vertex of the second triangle are in contact with a second end surface inside the respective unit structure of the plurality of unit structures;
forming a substrate part on the fixing surface; and
separating the fixing surface from the plurality of microstructures and the substrate part.

2. The method of claim 1 , wherein the substrate part is made of an elastic material.

3. The method of claim 1 , wherein the forming of the auxetic comprises: treating the fixing surface with a release preventing agent, wherein the release preventing agent is applied, printed, or sprayed.

4. The method of claim 1 , further comprises:
forming a fixing part on the substrate part.

5. The method of claim 1 , wherein the forming of the auxetic comprises:
forming the auxetic including a porous pattern, wherein the porous pattern is formed to include one or more holes including an inner space layer.

Assignees

• Korea Inst Sci & Tech

Inventors

• Chung Seungjun
• Lee Phillip
• Son Jeong Gon
• Kim Heesuk
• Kim Jai Kyeong
• Lee Seunghyun
• Lee Byeongmoon

Classifications

• B29C35/02

  Heating or curing, e.g. crosslinking or vulcanizing {during moulding, e.g. in a mould}(cold vulcanisation B29C35/18 {; vulcanising tyres, presses therefor B29D30/0601}) · CPC title

• G06F1/1652

  the display being flexible, e.g. mimicking a sheet of paper, or rollable · CPC title

• G06F1/163

  Wearable computers, e.g. on a belt · CPC title

• B81C2201/0101

  Shaping material; Structuring the bulk substrate or layers on the substrate; Film patterning · CPC title

• B81C1/00555

  Achieving a desired geometry, i.e. controlling etch rates, anisotropy or selectivity (B81C1/00023 - B81C1/0019 take precedence) · CPC title