Method for fabricating transfer printing substrate using concave-convex structure, transfer printing substrate fabricated thereby and application thereof
First Claim
1. A layered substrate structure for transfer printing, comprising:
- a handling substrate having a plurality of concave-convex structures formed thereon, the concave-convex structures each comprising a pot-shaped longitudinal cross-section comprised of an inlet and a belly and wherein the inlet is smaller than the belly; and
a polymer substrate, which is placed on the concave-convex structures of the handling substrate, comprising a plurality of bumpsthe bumps each being inserted into a corresponding concave portion of the concave-convex structures and the shape of each of the bumps conforming to the shape of the corresponding concave-portion.
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Abstract
The present disclosure provides a method for fabricating a substrate for transfer printing using a concave-convex structure and a substrate for transfer printing fabricated thereby. The method includes preparing a handling substrate having a concave-convex structure formed thereon; forming a sacrificial layer along the concave-convex structure on the handling substrate; coating a polymer on the handling substrate having the sacrificial layer formed thereon to form a polymer substrate having bumps filling a concave portion of the concave-convex structure; and removing the sacrificial layer from the handling substrate. The substrate for transfer printing includes a handling substrate having a concave-convex structure formed thereon; and a polymer substrate placed on the concave-convex structure and having bumps filling a concave portion of the concave-convex structure of the handling substrate. The present invention allows a process of manufacturing a device to be stably performed on an ultrathin substrate and may secure high degree of alignment and high transfer yield in a transfer printing process.
6 Citations
5 Claims
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1. A layered substrate structure for transfer printing, comprising:
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a handling substrate having a plurality of concave-convex structures formed thereon, the concave-convex structures each comprising a pot-shaped longitudinal cross-section comprised of an inlet and a belly and wherein the inlet is smaller than the belly; and a polymer substrate, which is placed on the concave-convex structures of the handling substrate, comprising a plurality of bumps the bumps each being inserted into a corresponding concave portion of the concave-convex structures and the shape of each of the bumps conforming to the shape of the corresponding concave-portion. - View Dependent Claims (2, 3, 4, 5)
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Specification