Patent ID: 9565753
Date: 2017-02-07
CPC Classifications: H05K,Y10T

Claim:
1. A stretchable substrate comprising: a stretchable substrate having first Young's modulus and stretchability; and strain control patterns having second Young's modulus, printed and arranged on the stretchable substrate, wherein the second Young's modulus is larger than the first Young's modulus, wherein a ratio of the first Young's modulus to the second Young's modulus is greater than or equal to 1:325; wherein strain due to an external force depends on arrangement of the printed strain control patterns, wherein the stretchable substrate includes: a stretchable support substrate having the first Young's modulus; and a stretchable member having the first Young's modulus and disposed on and covering the stretchable support substrate, wherein the printed strain control patterns are disposed on the stretchable support substrate and are covered with the stretchable member, wherein the printed strain control patterns are arranged along a closed curve when viewed from a top of the stretchable substrate such that a stress reduction area is formed inside the closed curve by arrangement of the printed strain control patterns, and an electronic circuit is disposed in the stress reduction area on the stretchable substrate.