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).
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Patent number: 9631085Abstract: 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: GrantFiled: October 1, 2012Date of Patent: April 25, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Won-jae Joo, Youn-jung Park, Yong-sik Jung
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Patent number: 9557639Abstract: 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: GrantFiled: November 13, 2013Date of Patent: January 31, 2017Assignees: 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
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Patent number: 9189981Abstract: 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: GrantFiled: February 7, 2013Date of Patent: November 17, 2015Assignee: NANOBRICK CO., LTD.Inventors: Jae Hyun Joo, Do Hyun Kim, Youn Jung Park, In Sook Lee
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Patent number: 9029271Abstract: 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: GrantFiled: December 24, 2013Date of Patent: May 12, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Youn Jung Park, Haeng Deog Koh, Mi-Jeong Kim, Seong-Jun Jeong
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Publication number: 20140206822Abstract: 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: ApplicationFiled: June 22, 2012Publication date: July 24, 2014Applicant: NANOBRICK CO., LTD.Inventors: Jae Hyun Joo, Sung-Bok Wee, Youn-Jung Park, Sung-Wan Hong, Hyong-Ku Chang
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Publication number: 20140193614Abstract: 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: ApplicationFiled: November 13, 2013Publication date: July 10, 2014Applicants: 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
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Publication number: 20140187054Abstract: 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: ApplicationFiled: December 24, 2013Publication date: July 3, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Youn Jung PARK, Haeng Deog KOH, Mi-Jeong KIM, Seong-Jun JEONG
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Publication number: 20140109446Abstract: 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: ApplicationFiled: February 7, 2013Publication date: April 24, 2014Applicant: NANOBRICK CO., LTD.Inventors: Jae Hyun Joo, Do Hyun Kim, Youn Jung Park, In Sook Lee
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Patent number: 8564181Abstract: 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: GrantFiled: September 8, 2011Date of Patent: October 22, 2013Assignees: Samsung Electronics Co., Ltd., Industry-Academic Cooperation Foundation, Yonsei UniversityInventors: Seung-Tae Choi, Jong-Oh Kwon, Youn-Jung Park, Cheol-Min Park, Yeon-Sik Choi
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Publication number: 20130026457Abstract: 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: ApplicationFiled: October 1, 2012Publication date: January 31, 2013Inventors: Won-jae JOO, Youn-jung PARK, Yong-sik JUNG
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Publication number: 20120139393Abstract: 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: ApplicationFiled: September 8, 2011Publication date: June 7, 2012Applicants: 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