Patents by Inventor Seung Kwon Seol

Seung Kwon Seol 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: 11597225
    Abstract: The present invention relates to silver ink for printing a three dimensional microstructure and a 3D printing method using the same. The present invention provides a method for printing a 3-dimensional silver structure pattern, the method including: a step of providing a nozzle with liquid ink including capped silver nanoparticles and exhibiting Newtonian fluid behavior; a step of forming, at a predetermined point on a substrate, a meniscus of the liquid ink with ink extruded from the nozzle; a step of allowing the ink of the nozzle to be extruded by means of the surface tension of the meniscus while moving the nozzle along a path in a direction perpendicular to the substrate, in a direction parallel to the substrate, or according to a combination of said directions; and a step of forming a silver structure pattern corresponding to the movement path of the nozzle by evaporating a solvent from the extruded ink from the region closer to the substrate.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: March 7, 2023
    Assignee: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE
    Inventors: Seung Kwon Seol, Sang Hyeon Lee, Won Suk Chang
  • Publication number: 20230053799
    Abstract: Carbon nanotube (CNT) ink includes a CNT, a rheological modifier for controlling a flow of the CNT, and a solvent. The CNT ink exhibits a liquid-like behavior under shear stress of 10?1 to 10 Pa. A loss modulus of the CNT ink may have a larger value than that of storage modulus under shear stress of 10?1 to 10 Pa. A content of the CNT may be 1 to 20 wt %. A content of the rheological modifier in the CNT ink may be 5 to 40 wt %. A weight ratio of the content of the CNT and the content of the rheological modifier in the CNT ink may be 1:1 to 1:5. The solvent may have a boiling point of 100° C. or less.
    Type: Application
    Filed: October 13, 2022
    Publication date: February 23, 2023
    Inventors: Seung Kwon SEOL, Won Suk CHANG
  • Publication number: 20230015760
    Abstract: The present invention relates to a color filter having a quantum dot color conversion structure and a manufacturing method therefor. The present invention relates to a color filter having a plurality of quantum dot color conversion layers spaced apart from each other, wherein each of the quantum dot color conversion layers is a free-standing wire structure extending in a vertical direction from a substrate, and the ratio of the length to the width of the free-standing wire structure is 1 or more.
    Type: Application
    Filed: October 22, 2020
    Publication date: January 19, 2023
    Inventors: Jaeyeon PYO, Jongcheon BAE, Jung Hyun KIM, Seung Kwon SEOL
  • Patent number: 11512210
    Abstract: A method of manufacturing a carbon nanotube (CNT) composite material structure is provided. The method includes providing ink, in which a CNT composite material including a CNT and a rheological modifier is dispersed, to a nozzle, positioning the nozzle at a predetermined point on a substrate, and moving the nozzle along a predetermined path on the substrate while discharging the ink from the nozzle by surface tension of a meniscus formed at a leading end of the nozzle and printing a CNT composite material pattern corresponding to a movement path of the nozzle. In printing the CNT composite material pattern, the pattern is stacked as the CNT composite material by evaporation of a solvent within a meniscus formed by the ink extruded from the nozzle between the nozzle and the substrate.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: November 29, 2022
    Assignee: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE
    Inventors: Seung Kwon Seol, Won Suk Chang
  • Publication number: 20210340397
    Abstract: A catalyst ink for plating and a method for electrochemically manufacturing an electronic device by using same are disclosed. The present invention provides a catalyst ink for plating, comprising: a polymer binder; a metal ion as a catalyst; a silane coupling agent for coupling the metal ion and the polymer; and a solvent, wherein the polymer has a lower critical solution temperature in the temperature-composition phase diagram for a solvent-polymer binary system, and the lower critical solution temperature is 30° C. or higher. According to the present invention, a high resolution plated pattern having a line width and a width between lines can be manufactured.
    Type: Application
    Filed: October 26, 2018
    Publication date: November 4, 2021
    Inventors: Seung Kwon SEOL, Sang Hyeon LEE, Won Suk CHANG, Jae Yeon PYO
  • Publication number: 20200207132
    Abstract: The present invention relates to silver ink for printing a three dimensional microstructure and a 3D printing method using the same. The present invention provides a method for printing a 3-dimensional silver structure pattern, the method including: a step of providing a nozzle with liquid ink including capped silver nanoparticles and exhibiting Newtonian fluid behavior; a step of forming, at a predetermined point on a substrate, a meniscus of the liquid ink with ink extruded from the nozzle; a step of allowing the ink of the nozzle to be extruded by means of the surface tension of the meniscus while moving the nozzle along a path in a direction perpendicular to the substrate, in a direction parallel to the substrate, or according to a combination of said directions; and a step of forming a silver structure pattern corresponding to the movement path of the nozzle by evaporating a solvent from the extruded ink from the region closer to the substrate.
    Type: Application
    Filed: April 26, 2018
    Publication date: July 2, 2020
    Inventors: Seung Kwon SEOL, Sang Hyeon LEE, Won Suk CHANG
  • Patent number: 10660166
    Abstract: The microwave heating apparatus of the present invention enables microwaves to be propagated onto an object to be heated through a waveguide such that the microwaves propagate to a microwave space reduced by a wavelength controller which is arranged, as a solid-state object, to occupy a predetermined space in the waveguide. Thus, the microwave heating apparatus of the present invention heats the object to be heated which has been placed in the reduced space. The microwave heating apparatus of the present invention utilizes the effects of lengthening the wavelength of the microwaves propagating to the reduced space so as to be longer than the wavelength before entering the reduced space by a predetermined multiple depending on a near-cutoff condition.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: May 19, 2020
    Assignee: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE
    Inventors: Sun Shin Jung, Dae Ho Kim, Seung Kwon Seol, Geon Woong Lee, Won Suk Chang, Seung Yol Jeong, Hee Jin Jeong, Joong Tark Han
  • Publication number: 20190276688
    Abstract: Disclosed is a method of printing a CNT 3D structure. The present invention provides a method of manufacturing a CNT composite material structure, the method including: providing ink, in which a carbon nanotube (CNT) composite material including a CNT and a rheological modifier is dispersed, to a nozzle; positioning the nozzle at a predetermined point on a substrate; and moving the nozzle along a predetermined path on the substrate while discharging the ink from the nozzle and printing a CNT composite material pattern corresponding to a movement path of the nozzle, in which in the printing of the CNT composite material pattern, the pattern is stacked as the CNT composite material by evaporation of a solvent within a meniscus formed by the ink extruded from the nozzle between the nozzle and the substrate.
    Type: Application
    Filed: November 3, 2016
    Publication date: September 12, 2019
    Applicants: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE, KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE
    Inventors: Seung Kwon SEOL, Won Suk CHANG
  • Publication number: 20150136761
    Abstract: The microwave heating apparatus of the present invention enables microwaves to be propagated onto an object to be heated through a waveguide such that the microwaves propagate to a microwave space reduced by a wavelength controller which is arranged, as a solid-state object, to occupy a predetermined space in the waveguide. Thus, the microwave heating apparatus of the present invention heats the object to be heated which has been placed in the reduced space. The microwave heating apparatus of the present invention utilizes the effects of lengthening the wavelength of the microwaves propagating to the reduced space so as to be longer than the wavelength before entering the reduced space by a predetermined multiple depending on a near-cutoff condition.
    Type: Application
    Filed: May 14, 2013
    Publication date: May 21, 2015
    Inventors: Sun Shin Jung, Dae Ho Kim, Seung Kwon Seol, Geon Woong Lee, Won Suk Chang, Seung Yol Jeong, Hee Jin Jeong, Joong Tark Han
  • Patent number: 8345818
    Abstract: Disclosed herein are a tomosynthesis system for digital X-ray imaging and a method of controlling the tomosynthesis system. The tomosynthesis system includes an X-ray source, a detector, and a terminal. The X-ray source continuously moves during a scan period, and maintains a uniform X-ray focus in each capture section in which capture is performed by adjusting the direction of an emitted electron beam. The detector detects an image of X-rays having passed through an area of interest of an object in the capture section. The terminal controls the adjustment of the direction of the electron beam, creates a three-dimensional (3D) X-ray image by synthesizing detected X-ray images, and then displays the 3D X-ray image.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: January 1, 2013
    Assignee: Korea Electrotechnology Research Institute
    Inventors: Sun Shin Jung, Dae Ho Kim, Seung Kwon Seol, Seung Oh Jin
  • Publication number: 20120298401
    Abstract: Disclosed herein is a method for fabricating a three-dimensional ultrafine conducting polymer wire having a high aspect ratio by local chemical polymerization using a micropipette.
    Type: Application
    Filed: January 22, 2010
    Publication date: November 29, 2012
    Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Jung Ho Je, Ji Tae Kim, Seung Kwon Seol
  • Publication number: 20120020450
    Abstract: Disclosed herein are a tomosynthesis system for digital X-ray imaging and a method of controlling the tomosynthesis system. The tomosynthesis system includes an X-ray source, a detector, and a terminal. The X-ray source continuously moves during a scan period, and maintains a uniform X-ray focus in each capture section in which capture is performed by adjusting the direction of an emitted electron beam. The detector detects an image of X-rays having passed through an area of interest of an object in the capture section. The terminal controls the adjustment of the direction of the electron beam, creates a three-dimensional (3D) X-ray image by synthesizing detected X-ray images, and then displays the 3D X-ray image.
    Type: Application
    Filed: November 30, 2010
    Publication date: January 26, 2012
    Applicant: Korea Electrotechnology Research Institute
    Inventors: Sun Shin JUNG, Dae Ho KIM, Seung Kwon SEOL, Seung Oh JIN
  • Publication number: 20090308754
    Abstract: The present invention provides a method of fabricating a micro hollow tube, more specifically, a method of fabricating a micro hollow tube by template-free localized electrochemical deposition, in which the micro hollow tube is fabricated by the accurate control of the distribution of the electric field strength during deposition with precise interplay of the applied voltage and the distance between the microelectrode and the grown structure.
    Type: Application
    Filed: July 17, 2009
    Publication date: December 17, 2009
    Inventors: Seung Kwon Seol, Jung Ho Je, Yeu Kuang Hwu
  • Publication number: 20080173546
    Abstract: The present invention relates to a method of fabricating a micro hollow tube. More specifically, the invention relates to a method of fabricating a micro hollow tube by template-free localized electrochemical deposition, in which the micro hollow tube is fabricated by the accurate control of the distribution of the electric field strength during deposition with precise interplay of the applied voltage and the distance between the microelectrode and the grown structure.
    Type: Application
    Filed: January 22, 2007
    Publication date: July 24, 2008
    Inventors: Seung Kwon Seol, Jung Ho Je, YeuKuang Hwu