Jin Kon
Jin Kon Kim, Gyungsangbuk-Do KR
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20110120970 | NANOPOROUS ANTIREFLECTION THIN FILM AND METHOD OF PRODUCING THE SAME USING BLOCK COPOLYMERS - Disclosed herein is a method of producing an antireflection thin film using a block copolymer and an antireflection thin film prepared by the method. Specifically, the present invention relates to a method of producing a nanoporous antireflection film by spin-coating using a block copolymer solution and subsequent processing and a preparation by the method. The antireflection film of the present invention is prepared by coating a substrate with a block copolymer and selectively removing at least one block in the coated block copolymer to produce a nanoporous thin film with a pore size of 5 to 100 nm. When the thin film is applied to a substrate, an antireflection substrate which has a very low reflectance within a broad range of wavelength can be prepared. | 05-26-2011 |
Jin Kon Kim, Gyeongju KR
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20130040127 | MEMBRANE AND METHOD OF FABRICATING THE SAME - A membrane according to the present invention includes a support member and a polymer layer disposed on the support member and including a plurality of nano pores each having an inner wall formed of a block-structured polymer material of which the end thereof is substituted by a functional group. | 02-14-2013 |
Jin Kon Ryu, Seoul KR
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20150131874 | DYNAMIC HANDWRITING VERIFICATION AND HANDWRITING-BASED USER AUTHENTICATION - Handwriting verification methods and related computer systems, and handwriting-based user authentication methods and related computer systems are disclosed. A handwriting verification method comprises obtaining a handwriting test sample containing a plurality of available parameters, extracting geometric parameters, deriving geometric features comprising an x-position value and a y-position value for each of a plurality of feature points in the test sample, performing feature matching between geometric features of the test sample and a reference sample, determining a handwriting verification result based at least in part on the feature matching, and outputting the handwriting verification result. The geometric features may further comprise values derived from the geometric parameters, such as direction and curvature values. The handwriting verification result can be further based on a count of unlinked feature points. Handwriting-based user authentication methods can employ such handwriting verification methods, or other handwriting verification methods. | 05-14-2015 |