Korea Institute of Machinery & Materials

Sin Kwon

Seung-hyun Lee

Taik-min Lee

Kye-hee Woo

Dong-ha Song

Inyoung Kim

Yun-seok Jang

Taikmin Lee

In a structural coloration substrate, a method for manufacturing the structural coloration substrate, and a security verification system using the structural coloration substrate manufactured by the method, the method includes forming a first pattern displaying a first color on a base substrate, using a quantum dot, and stacking at least one structural coloration layer on the base substrate on which the first pattern is formed. The first color of the first pattern is changed and displayed, as the at least one structural coloration layer is stacked.

Structural coloration substrate, method for manufacturing structural coloration substrate, and security verification system using structural coloration substrate manufactured thereby

A stereoscopic pattern apparatus includes a base roller and a retrieving roller, a fine pattern hardening roller, an ink inserting roller and a convex pattern hardening roller. The base roller and the retrieving roller respectively provide and retrieve a base film. The fine pattern hardening roller is disposed between the base and retrieving rollers, and forms a lower hardening layer on the base film. A fine pattern is formed on the lower hardening layer. The ink inserting roller is disposed between the fine pattern hardening roller and the retrieving roller, and inserts an ink into the fine pattern. The convex pattern hardening roller is disposed between the ink inserting roller and the retrieving roller, and forms an upper hardening layer on the lower hardening layer. A convex lens is uniformly formed on the upper hardening layer.

Three dimensional pattern printing device and method for manufacturing micro-optical film structure by using same

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Sejong, South Korea

Sin Kwon