Patents by Inventor Youn-Jung PARK

Youn-Jung PARK has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9631085
    Abstract: A polymer blend including a first polymer having a unit represented by Formula 1 and a second polymer having a unit represented by Formula 2: wherein in Formulae 1 and 2, R1 through R13, l, and m are the same as defined in the detailed description.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: April 25, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Won-jae Joo, Youn-jung Park, Yong-sik Jung
  • Patent number: 9557639
    Abstract: A method of patterning a block copolymer layer, the method including: providing a substrate with a guide pattern formed on a surface thereof; forming a block copolymer layer on the substrate with the guide pattern, the block copolymer layer including a block copolymer; and directing self-assembly of the block copolymer on the substrate according to the guide pattern to form n/2 discrete domains, wherein the guide pattern includes a block copolymer patterning area having a 90-degree bending portion, and an outer apex and an inner apex of the 90-degree bending portion are each rounded, the outer apex having a first curvature radius r1, and the inner apex having a second curvature radius r2, respectively, and the width of the patterning area W, the first curvature radius r1 and the second curvature radius r2, satisfy Inequation 1: 2 + 2 - ( 1 + 2 ) [ ( n + 2 ) 2 n ? ( n + 1 ) ] 1 3 ? r 1 - r 2 W ? 2 + 2 - ( 1 + 2 ) [ ( n - 2 ) 2 n ? ( n - 1 )
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: January 31, 2017
    Assignees: SAMSUNG ELECTRONICS CO., LTD., YONSEI UNIVESITY, UNIVERSITY-INDUSTRY FOUNDATION(UIF)
    Inventors: Mi-Jeong Kim, In Taek Han, June Huh, Seong-Jun Jeong, Haeng Deog Koh, Youn Jung Park
  • Patent number: 9189981
    Abstract: A display device and a display method using magnetic particles are disclosed. The display method includes: applying a first magnetic field to a plurality of particles in a state where the plurality of particles having a magnetic property and a certain color are dispersed in a solvent so that the plurality of particles are aligned in a direction parallel to a direction of the first magnetic field, and thus a plurality of particle chains are formed; and applying a second magnetic field to at least a part of the formed plurality of particle chains so that at least a part of the plurality of particle chains moves in a direction close to a display surface in an area to which the second magnetic field is applied, and thus the certain color is displayed on the display surface.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: November 17, 2015
    Assignee: NANOBRICK CO., LTD.
    Inventors: Jae Hyun Joo, Do Hyun Kim, Youn Jung Park, In Sook Lee
  • Patent number: 9029271
    Abstract: A method of patterning a block copolymer layer includes: providing a guide pattern on a surface of a substrate, the guide pattern including sidewalls each elongated in a longitudinal direction and spaced apart from each other, a trench defined by a bottom surface and facing surfaces of the sidewalls, and having a uniform width over an entire length thereof in the longitudinal direction, and a latitudinal wall perpendicular to the longitudinal direction of the trench; providing a block copolymer layer on the surface of the substrate; and annealing the block copolymer to cause self-assembly of the block copolymer and to direct the same in the trench. The block copolymer has a microphase-separation into anisotropic discrete domains aligned with a period ?o in the trench by the annealing.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: May 12, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Youn Jung Park, Haeng Deog Koh, Mi-Jeong Kim, Seong-Jun Jeong
  • Publication number: 20140206822
    Abstract: The present invention relates to a surface treatment method for magnetic particles, a magnetic composite prepared thereby, and a magnetic composite for labeling target materials. More specifically, the invention relates to a surface treatment method for magnetic particles and a magnetic composite having excellent dispersibility prepared thereby, wherein the surface treatment method comprises the steps of: performing the acid-treatment of magnetic particles and mixing the acid-treated magnetic particles with a water-soluble solvent in order to form a hydroxyl group (—OH) on the surface of the magnetic particles; and mixing the magnetic particles, in which the hydroxyl group is formed, with a surface treatment agent containing an organic ligand, which can be bonded to the hydroxyl group, so that the organic ligand is treated on the surface of the magnetic particles.
    Type: Application
    Filed: June 22, 2012
    Publication date: July 24, 2014
    Applicant: NANOBRICK CO., LTD.
    Inventors: Jae Hyun Joo, Sung-Bok Wee, Youn-Jung Park, Sung-Wan Hong, Hyong-Ku Chang
  • Publication number: 20140193614
    Abstract: A method of patterning a block copolymer layer, the method including: providing a substrate with a guide pattern formed on a surface thereof; forming a block copolymer layer on the substrate with the guide pattern, the block copolymer layer including a block copolymer; and directing self-assembly of the block copolymer on the substrate according to the guide pattern to form n/2 discrete domains, wherein the guide pattern includes a block copolymer patterning area having a 90-degree bending portion, and an outer apex and an inner apex of the 90-degree bending portion are each rounded, the outer apex having a first curvature radius r1and the inner apex having a second curvature radius r2, respectively, and the width of the patterning area W, the first curvature radius r1 and the second curvature radius r2, satisfy Inequation 1: 2 + 2 - ( 1 + 2 ) [ ( n + 2 ) 2 n ? ( n + 1 ) ] 1 3 ? r 1 - r 2 W ? 2 + 2 - ( 1 + 2 ) [ ( n - 2 ) 2 n ? ( n - 1 ) ]
    Type: Application
    Filed: November 13, 2013
    Publication date: July 10, 2014
    Applicants: Yonsei University, University - Industry Foundation(UIF), SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Mi-Jeong KIM, In Taek HAN, June HUH, Seong-Jun Jeong, Haeng Deog KOH, Youn Jung PARK
  • Publication number: 20140187054
    Abstract: A method of patterning a block copolymer layer includes: providing a guide pattern on a surface of a substrate, the guide pattern including sidewalls each elongated in a longitudinal direction and spaced apart from each other, a trench defined by a bottom surface and facing surfaces of the sidewalls, and having a uniform width over an entire length thereof in the longitudinal direction, and a latitudinal wall perpendicular to the longitudinal direction of the trench; providing a block copolymer layer on the surface of the substrate; and annealing the block copolymer to cause self-assembly of the block copolymer and to direct the same in the trench. The block copolymer has a microphase-separation into anisotropic discrete domains aligned with a period ?o in the trench by the annealing.
    Type: Application
    Filed: December 24, 2013
    Publication date: July 3, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Youn Jung PARK, Haeng Deog KOH, Mi-Jeong KIM, Seong-Jun JEONG
  • Publication number: 20140109446
    Abstract: A display device and a display method using magnetic particles are disclosed. The display method includes: applying a first magnetic field to a plurality of particles in a state where the plurality of particles having a magnetic property and a certain color are dispersed in a solvent so that the plurality of particles are aligned in a direction parallel to a direction of the first magnetic field, and thus a plurality of particle chains are formed; and applying a second magnetic field to at least a part of the formed plurality of particle chains so that at least a part of the plurality of particle chains moves in a direction close to a display surface in an area to which the second magnetic field is applied, and thus the certain color is displayed on the display surface.
    Type: Application
    Filed: February 7, 2013
    Publication date: April 24, 2014
    Applicant: NANOBRICK CO., LTD.
    Inventors: Jae Hyun Joo, Do Hyun Kim, Youn Jung Park, In Sook Lee
  • Patent number: 8564181
    Abstract: A multilayered electroactive polymer (EAP) device and a method of manufacturing the same is provided. The multilayered EAP device includes a plurality of unit layers. Each unit layer includes an EAP layer formed of an electroactive polymer (EAP), a protecting layer configured to prevent a material from penetrating into the EAP layer, and an active electrode formed using a conductive material. The protecting layer may be formed below the active layer or above the active layer. The active electrode may be interposed between two protecting layers.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: October 22, 2013
    Assignees: Samsung Electronics Co., Ltd., Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Seung-Tae Choi, Jong-Oh Kwon, Youn-Jung Park, Cheol-Min Park, Yeon-Sik Choi
  • Publication number: 20130026457
    Abstract: A polymer blend including a first polymer having a unit represented by Formula 1 and a second polymer having a unit represented by Formula 2: wherein in Formulae 1 and 2, R1 through R13, l, and m are the same as defined in the detailed description.
    Type: Application
    Filed: October 1, 2012
    Publication date: January 31, 2013
    Inventors: Won-jae JOO, Youn-jung PARK, Yong-sik JUNG
  • Publication number: 20120139393
    Abstract: A multilayered electroactive polymer (EAP) device and a method of manufacturing the same is provided. The multilayered EAP device includes a plurality of unit layers. Each unit layer includes an EAP layer formed of an electroactive polymer (EAP), a protecting layer configured to prevent a material from penetrating into the EAP layer, and an active electrode formed using a conductive material. The protecting layer may be formed below the active layer or above the active layer. The active electrode may be interposed between two protecting layers.
    Type: Application
    Filed: September 8, 2011
    Publication date: June 7, 2012
    Applicants: Industry-Academic Cooperation Foundation, Yonsei University, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung-Tae CHOI, Jong-Oh KWON, Youn-Jung PARK, Cheol-Min PARK, Yeon-Sik CHOI