▎ 摘　　要

NOVELTY - A three-dimensional curvature structure comprises an ink pattern printed on a biaxial pre-stretched polymer sheet at regular angular intervals in a radial or spiral form with respect to the center, and at least one printing pattern portion containing a facet on which the ink pattern is printed or not in the central portion, produced by deformation by differential contraction between the printed portion with ink and unprinted portion by stimulation. USE - Three-dimensional curvature structure. ADVANTAGE - The curvature structure enables programming of shape control devices required for soft actuators and wearable devices by controlling stress convolution that occurs when manufacturing three-dimensional structure with a complex shape. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for three-dimensional curvature structure, which involves (i) forming at least one printing pattern portion on the biaxial pre-stretched polymer sheet by printing an ink pattern radially or spirally at regular angular intervals including or excluding the central portion in at least one place with respect to the central portion, and applying a stimulus to the biaxial pre-stretched polymer sheet printed with the ink.