Patents by Inventor Seung-Ho Choi

Seung-Ho Choi 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: 9450199
    Abstract: A method of forming nanocrystals and a method of manufacturing an organic light-emitting display apparatus that includes a metal compound thin film having the nanocrystals. The method of forming nanocrystals includes forming a metal compound thin film under a first pressure by using a reactive sputtering process, and forming the nanocrystals in the metal compound thin film under a second pressure that is lower than the first pressure by using the reactive sputtering process.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: September 20, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Myung-Soo Huh, Cheol-Lae Roh, Seung-Ho Choi
  • Publication number: 20160253257
    Abstract: A data processing system includes a host device suitable for assigning a context identifier to data based on attribute information of the data, and a data storage device suitable for performing a garbage collection operation based on the context identifier.
    Type: Application
    Filed: June 5, 2015
    Publication date: September 1, 2016
    Inventors: Ki Duck KIM, Eu Joon BYUN, Duk Rae LEE, Seung Ho CHOI
  • Patent number: 9382385
    Abstract: The present invention relates to a lactide copolymer exhibiting excellent flexibility and having more improved processability and productivity at the time of performing an extrusion and molding process, and a resin composition and film including the same, wherein the lactide copolymer includes a predetermined number of block copolymer repeating units in which hard segments of polylactide repeating units are bound to both ends of soft segments of polyether polyol repeating units, and has a weight-average molecular weight of 150,000 to 300,000, and a melt index y (MI; g/10 min) satisfying a specific relationship, the MI being measured under a load of 2.16 kg and at a temperature of x? between 170? and 210?.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: July 5, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Jung Min Sohn, Seung Young Park, Kyung Seog Youk, Seung Ho Choi
  • Patent number: 9382386
    Abstract: The present invention relates to a lactide copolymer having excellent general physical properties such as mechanical physical properties, processability, and the like, and having excellent flexibility to be effectively usable as a packaging material, and the like, a preparing method thereof, and a resin composition including the same, wherein the lactide copolymer includes: two or more block copolymer repeating units in which hard segments of polylactide repeating units are bound to both ends of soft segments of polyether polyol repeating units, the block copolymer repeating units are linked with each other via a urethane linking group induced from a polyvalent isocyanate compound having more than 2 to less than 3 equivalents of an isocyanate group per a molecule, and the polyether polyol repeating unit has a number average molecular weight of 1000 to 10000.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: July 5, 2016
    Assignee: LG Chem, Ltd
    Inventors: Jung Min Sohn, Seung Young Park, Kyung Seog Youk, Seung Ho Choi
  • Publication number: 20160133871
    Abstract: A flexible display apparatus includes a flexible substrate, a display layer disposed on one surface of the flexible substrate and including a plurality of pixels, graphene disposed on a surface opposing the one surface of the flexible substrate, and an encapsulation layer covering the display layer.
    Type: Application
    Filed: January 5, 2016
    Publication date: May 12, 2016
    Inventors: Seung-Ho Choi, Hyun-Woo Joo, Myung-Soo Huh
  • Publication number: 20160101682
    Abstract: A method of controlling an active air flap, includes detecting a location of a vehicle from a GPS signal received through a GPS receiver, and acquiring a road surface gradient of a road on which the vehicle travels from location information of the vehicle and map information stored in a data storage, by a controller, determining an opening degree setting value corresponding to the road surface gradient of the road, by the controller, outputting a control signal for controlling an opening degree of an air flap according to a setting value, by the controller, and controlling the opening degree of the air flap by operating an actuator according to the control signal.
    Type: Application
    Filed: December 15, 2014
    Publication date: April 14, 2016
    Applicant: Hyundai Motor Company
    Inventor: Seung Ho Choi
  • Patent number: 9294327
    Abstract: A method provides an identifying OFDM communication signal using OFDM symbol estimation. In view of the above, the present invention provides an apparatus and method for identifying an OFDM communication signal using an OFDM symbol estimation, which is capable of analyzing the OFDM signal with a high accuracy in a cognitive radio technique, thereby identifying the OFDM signal from a heterogeneous communication signal.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: March 22, 2016
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyung Jung Kim, Chang-Joo Kim, Jin Young Kim, Seung-Ho Choi
  • Patent number: 9263698
    Abstract: A flexible display apparatus includes a flexible substrate, a display layer disposed on one surface of the flexible substrate and including a plurality of pixels, graphene disposed on a surface opposing the one surface of the flexible substrate, and an encapsulation layer covering the display layer.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: February 16, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung-Ho Choi, Hyun-Woo Joo, Myung-Soo Huh
  • Patent number: 9259805
    Abstract: Provided is a mask for an evaporation apparatus, which includes a first division mask and a second division mask. The first and second division masks are directly bonded to each other by welding, thereby forming welding portion between the first and the second division masks. A method and apparatus for manufacturing a mask for evaporation are also provided. The division masks according to the embodiment do not use subframes, and are directly bonded to one another by welding, so that a shadow effect does not occur. The apparatus for manufacturing a mask for evaporation includes a work stage, a clamp fixing a first division mask and a second division mask to the work stage, and a laser welding part welding the first division mask to the second division mask. The apparatus may further include a first roller leading the laser welding part and a second roller following the laser welding part.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: February 16, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joon-Hyung Kim, Young-Geun Cho, Eui-Shin Shin, Jong-Heon Kim, Seung-Ho Choi, Cheol-Lae Roh, Chang-Mog Jo, Jae-Seok Park
  • Publication number: 20150274898
    Abstract: The present invention relates to a lactide copolymer exhibiting excellent flexibility and having more improved processability and productivity at the time of performing an extrusion and molding process, and a resin composition and film including the same, wherein the lactide copolymer includes a predetermined number of block copolymer repeating units in which hard segments of polylactide repeating units are bound to both ends of soft segments of polyether polyol repeating units, and has a weight-average molecular weight of 150,000 to 300,000, and a melt index y (MI; g/10 min) satisfying a specific relationship, the MI being measured under a load of 2.16 kg and at a temperature of x? between 170? and 210?.
    Type: Application
    Filed: December 4, 2013
    Publication date: October 1, 2015
    Inventors: Jung Min Sohn, Seung Young Park, Kyung Seog Youk, Seung Ho Choi
  • Publication number: 20150200383
    Abstract: One or more embodiments of the present invention relate to a sputtering device and a sputtering method. By using the sputtering device according to the present embodiment, characteristics of a deposition layer formed at the organic light emitting display apparatus may be improved, thereby improving electric characteristics and image quality of the organic light emitting display apparatus may be improved.
    Type: Application
    Filed: June 5, 2014
    Publication date: July 16, 2015
    Inventors: Seung-Ho Choi, Yong-Suk Lee
  • Publication number: 20150188080
    Abstract: A flexible display apparatus includes a flexible substrate, a display layer disposed on one surface of the flexible substrate and including a plurality of pixels, graphene disposed on a surface opposing the one surface of the flexible substrate, and an encapsulation layer covering the display layer.
    Type: Application
    Filed: June 24, 2014
    Publication date: July 2, 2015
    Inventors: Seung-Ho Choi, Hyun-Woo Joo, Myung-Soo Huh
  • Patent number: 9007269
    Abstract: Embodiments of the invention provide a dielectric waveguide antenna including a dielectric waveguide transmitting a signal applied from a power feeder, a dielectric waveguide radiator radiating the signal transmitted from the dielectric waveguide to the air through a first aperture, and a matching unit formed in a portion of the dielectric waveguide and controlling a serial reactance and a parallel reactance to thereby perform impedance matching between the dielectric waveguide radiator and the air, in order to reduce reflection generated in the first aperture during the radiation of the signal through the first aperture. Reflection in the aperture is reduced through the matching unit having various structures, thereby making it possible to improve characteristics of the dielectric waveguide antenna.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: April 14, 2015
    Assignees: Samsung Electro-Mechanics Co., Ltd., Korea University Research and Business Foundation
    Inventors: Jung Aun Lee, Myeong Woo Han, Chul Gyun Park, Moonil Kim, Seung Ho Choi, Kook Joo Lee
  • Patent number: 8986783
    Abstract: A method of depositing a material on a substrate is provided for use in manufacturing electronic and display devices such as semiconductors, liquid crystal displays, and organic light emitting diode displays. A deposition material stored in a first deposition source section is heated to evaporate the deposition material. A second deposition source section, which is separate from the first deposition source section, is cooled. The first deposition source section is cooled, and deposition material stored in a second deposition source section is heated so as to alternately supply evaporated deposition material from the first and second deposition source sections to a feed section. The evaporated deposition material from the feed section is supplied to a nozzle section. A substrate can be provided to receive the evaporated deposition material from the nozzle section. A thin film of deposition material can then be formed on the substrate.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: March 24, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Suk-Won Jung, Seung-Ho Choi, Kang-Il Lee, Hyun-Keun Song, Cheol-Lae Roh
  • Publication number: 20150041310
    Abstract: A sputtering apparatus includes: a first cylindrical target unit, a second cylindrical target unit facing the first cylindrical target unit; a third cylindrical target unit facing the first cylindrical target unit and the second cylindrical target unit; a fourth cylindrical target unit facing the first cylindrical target unit, the second cylindrical target unit, and the third cylindrical target unit; and a power unit configured to provide power such that two of the first cylindrical target unit, the second cylindrical target unit, the third cylindrical target unit, and the fourth cylindrical target unit function as different electrodes.
    Type: Application
    Filed: March 26, 2014
    Publication date: February 12, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Seung-Ho CHOI, Dae-Sang Yoon, Young-Bun Jeon
  • Publication number: 20150027876
    Abstract: A sputtering system includes a chamber, a plurality of targets, and a substrate holder. The targets are disposed in the chamber. Each target includes a magnet unit disposed therein. The substrate holder is configured to support a substrate in the chamber. The magnet units are configured to generate a magnetic field between the targets. Each of the magnet units includes magnets disposed in two rows.
    Type: Application
    Filed: March 18, 2014
    Publication date: January 29, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Seung-Ho CHOI, Jong-Jin Park
  • Publication number: 20140349433
    Abstract: A device for depositing an organic material includes a substrate; a mask having an opening portion and a shield portion; a fixing member for fixing the substrate and the mask to each other; a deposition source comprising a plurality of nozzles arranged in a first direction and configured to spray the organic material; and a plurality of shield plates near the plurality of nozzles on the deposition source. An angle ? between the substrate and a line extended from a distal end of one of the nozzles to a center of a distal end of a corresponding one of the shield plates is greater than or equal to a taper angle ? of the shield portion of the mask.
    Type: Application
    Filed: August 11, 2014
    Publication date: November 27, 2014
    Inventors: Seung-Ho Choi, Hyun Choi, Sung-Gon Kim, Min-Gyu Seo
  • Publication number: 20140314165
    Abstract: A method provides an identifying OFDM communication signal using OFDM symbol estimation. In view of the above, the present invention provides an apparatus and method for identifying an OFDM communication signal using an OFDM symbol estimation, which is capable of analyzing the OFDM signal with a high accuracy in a cognitive radio technique, thereby identifying the OFDM signal from a heterogeneous communication signal.
    Type: Application
    Filed: August 13, 2013
    Publication date: October 23, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Hyung Jung KIM, Chang-Joo KIM, Jin Young KIM, Seung-Ho CHOI
  • Publication number: 20140291146
    Abstract: A sputtering apparatus capable of effectively reducing damage of a target in a sputtering process includes a first magnet assembly extending in a first direction and having a first side surface and a second side surface extending in the first direction, which correspond to each other, and has a first bottom surface extending in the first direction, which connects the first and second side surfaces; a first shield on the first side surface of the first magnet assembly; and a first supporter for supporting a first end and a second end of a first cylindrical tubular target, the first cylindrical tubular target having a first longitudinal axis parallel to the first direction, the first cylindrical tubular target accommodating the first magnet assembly and the first shield.
    Type: Application
    Filed: July 18, 2013
    Publication date: October 2, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Jae-Yun Sim, Seung-Ho Choi
  • Publication number: 20140236281
    Abstract: In an apparatus for manufacturing a scaffold and a scaffold manufactured by the apparatus, a collector is disposed under a dispensing head that dispenses melted bio materials (polymer) for manufacturing the scaffold. The collector has a cylindrical tube shape. Both sides of the tube shape are fixed. Thus, the tube is securely fixed and bending of the tube is prevented. Also, accuracy and preciseness of the scaffold are improved.
    Type: Application
    Filed: December 31, 2013
    Publication date: August 21, 2014
    Applicants: PROTEK KOREA CO.,LTD., KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Junhee LEE, Sua PARK, Wan-Doo KIM, Seung-Ho CHOI