Patents by Inventor Do Hyun Kang

Do Hyun Kang 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).

  • Publication number: 20220328580
    Abstract: A display device includes: a substrate; a pixel defining layer disposed on the substrate and that includes a pixel opening; an emission layer that overlaps the pixel opening of the pixel defining layer; and an anti-reflection layer that overlaps the pixel defining layer along a direction perpendicular to a surface of the substrate and is disposed along a portion of an edge of the pixel opening.
    Type: Application
    Filed: January 9, 2022
    Publication date: October 13, 2022
    Inventors: Dong-Joon Park, Do Hyun Kang, Jung Kook Park, Dong Hak Pyo
  • Publication number: 20220275243
    Abstract: Provided herein are surface-functionalized substrates and methods of making said surface-functionalized substrates.
    Type: Application
    Filed: August 20, 2020
    Publication date: September 1, 2022
    Inventors: Jinsang Kim, Do Hyun Kang
  • Publication number: 20220068224
    Abstract: A display device includes at least a first luminance range and a second luminance range which includes a luminance different from the first luminance range. In a boundary area of a second dimming range corresponding to the second luminance range and which is adjacent to a first dimming range corresponding to the first luminance range, a reference luminance emitted from a pixel is maintained as a first constant luminance value, and an off-duty number, which is the number of periods in which the pixel is turned off during one frame, is gradually increased by an emission control signal.
    Type: Application
    Filed: September 2, 2021
    Publication date: March 3, 2022
    Inventors: Jung Kook PARK, Dong Wan PARK, Do Hyun KANG
  • Patent number: 10792400
    Abstract: The present invention relates to microstructure formulation techniques for botulinum toxin. The microstructure formulation techniques for botulinum toxin according to the present invention make it possible to precisely control the concentration of botulinum toxin and to alleviate the pain occurring when botulinum toxin is administered into the human body, and also enable botulinum toxin to be accurately administered to a desired position. Thus, the present invention is expected to greatly contribute to the safe and convenient medical use of botulinum toxin.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: October 6, 2020
    Assignees: Hugel Inc., Small Lab Co., Ltd.
    Inventors: Kyeong Yeop Moon, Chang Jin Lee, Dae Gun Kim, Dong Hoon Oh, Do Hyun Kang, Woo Ran Lee, Jeong Gyu Lee, Jun Jin Yoon, Juhyung Shin
  • Publication number: 20200121831
    Abstract: The present invention relates to microstructure formulation techniques for botulinum toxin. The microstructure formulation techniques for botulinum toxin according to the present invention make it possible to precisely control the concentration of botulinum toxin and to alleviate the pain occurring when botulinum toxin is administered into the human body, and also enable botulinum toxin to be accurately administered to a desired position. Thus, the present invention is expected to greatly contribute to the safe and convenient medical use of botulinum toxin.
    Type: Application
    Filed: November 20, 2019
    Publication date: April 23, 2020
    Applicants: Hugel Inc., Small Lab Co., Ltd.
    Inventors: Kyeong Yeop MOON, Chang Jin LEE, Dae Gun KIM, Dong Hoon OH, Do Hyun KANG, Woo Ran LEE, Jeong Gyu LEE, Jun Jin YOON, Juhyung SHIN
  • Patent number: 10525111
    Abstract: The present invention relates to microstructure formulation techniques for botulinum toxin. The microstructure formulation techniques for botulinum toxin according to the present invention make it possible to precisely control the concentration of botulinum toxin and to alleviate the pain occurring when botulinum toxin is administered into the human body, and also enable botulinum toxin to be accurately administered to a desired position. Thus, the present invention is expected to greatly contribute to the safe and convenient medical use of botulinum toxin.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: January 7, 2020
    Assignees: Hugel, Inc., Small Lab Co., Ltd.
    Inventors: Kyeong Yeop Moon, Chang Jin Lee, Dae Gun Kim, Dong Hoon Oh, Do Hyun Kang, Woo Ran Lee, Jeong Gyu Lee, Jun Jin Yoon
  • Publication number: 20190111119
    Abstract: The present invention relates to microstructure formulation techniques for botulinum toxin. The microstructure formulation techniques for botulinum toxin according to the present invention make it possible to precisely control the concentration of botulinum toxin and to alleviate the pain occurring when botulinum toxin is administered into the human body, and also enable botulinum toxin to be accurately administered to a desired position. Thus, the present invention is expected to greatly contribute to the safe and convenient medical use of botulinum toxin.
    Type: Application
    Filed: October 12, 2017
    Publication date: April 18, 2019
    Inventors: Kyeong Yeop Moon, Chang Jin Lee, Dae Gun Kim, Dong Hoon Oh, Do Hyun Kang, Woo Ran Lee, Jeong Gyu Lee, Jun Jin Yoon
  • Patent number: 9246376
    Abstract: Disclosed herein is a linear, curved or rotary electric machine. The electric machine includes first and second movers which are adjacent to each other and have a phase angle difference of 60° therebetween. The first mover includes phases U, V and W and the second mover includes phases /U, /V and /W. The electric machine of the present invention can reduce pulsations of thrust caused by end effect. In particular, in the case where the stator includes permanent magnets having the same poles and salient poles which alternate with the permanent magnets, the number of permanent magnets used can be reduced to half of that of a conventional linear electric machine.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: January 26, 2016
    Assignee: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shi Uk Chung, Do Hyun Kang, Byung Chul Woo, Ji Won Kim, Ji Young Lee, Seung Ryul Moon
  • Publication number: 20140035393
    Abstract: Disclosed herein is a linear, curved or rotary electric machine. The electric machine includes first and second movers which are adjacent to each other and have a phase angle difference of 60° therebetween. The first mover includes phases U, V and W and the second mover includes phases /U, /V and /W. The electric machine of the present invention can reduce pulsations of thrust caused by end effect. In particular, in the case where the stator includes permanent magnets having the same poles and salient poles which alternate with the permanent magnets, the number of permanent magnets used can be reduced to half of that of a conventional linear electric machine.
    Type: Application
    Filed: October 9, 2013
    Publication date: February 6, 2014
    Applicant: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shi Uk CHUNG, Do Hyun KANG, Byung Chul WOO, Ji Won KIM, Ji Young LEE, Seung Ryul MOON
  • Patent number: 8624446
    Abstract: Disclosed herein is a linear, curved or rotary electric machine. The electric machine includes first and second movers which are adjacent to each other and have a phase angle difference of 60° therebetween. The first mover includes phases U, V and W and the second mover includes phases /U, /V and /W. The electric machine of the present invention can reduce pulsations of thrust caused by end effect. In particular, in the case where the stator includes permanent magnets having the same poles and salient poles which alternate with the permanent magnets, the number of permanent magnets used can be reduced to half of that of a conventional linear electric machine.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: January 7, 2014
    Assignee: Korea Electrotechnology Research Institute
    Inventors: Shi Uk Chung, Do Hyun Kang, Byung Chul Woo, Ji Won Kim, Ji Young Lee, Seung Ryul Moon
  • Patent number: 8593019
    Abstract: Disclosed herein is a structure for linear and rotary electric machines. The present invention provides a modular mover structure which includes coils that have an electrical phase difference of 180°, so that the path of magnetic flux is shortened, thus reducing the size of the machine and mitigating the back-EMF unbalance. The modular mover structure can be modified into various shapes. For example, when a skew structure is applied to a mover or stator iron core, the force ripples in an electric machine can be reduced. In addition, when a hinge structure is applied to a modular mover iron core, the mover can move in a linear and curved manner. The structure of the present invention can be applied to a rotary electric machine. In this case, because the number of poles is easily increased, a low speed high torque direct drive type rotary electric machine is realized.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: November 26, 2013
    Assignee: Korea Electrotechnology Research Institute
    Inventors: Shi Uk Chung, Do Hyun Kang, Byung Chul Woo, Ji Won Kim, Ji Young Lee, Seung Ryul Moon
  • Patent number: 8354908
    Abstract: The present invention provides a cylindrical magnetic levitation stage which includes a cylindrical substrate used to form micro-patterns of various arbitrary shapes on a large-area semiconductor substrate or display panel substrate, a cylindrical substrate, a combination of a first permanent magnet array and a first coil array and a combination of a first permanent magnet array and a first coil array, which are coupled to the cylindrical substrate, so that levitation, axial translation and rotation of the cylindrical substrate can be made finely through the control of a magnetic force generated by the interaction between a magnetic field generated by electric current applied to the coil arrays and a magnetic field generated from the permanent magnet arrays corresponding to the coil arrays.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: January 15, 2013
    Assignee: Korea Electrotechnology Research Institute
    Inventors: Jeong Woo Jeon, Hyun Seok Oh, Sung Il Chung, Yeon Ho Jeong, Do Hyun Kang, S. A. Nikiforov, Mitica Caraiani
  • Publication number: 20110234343
    Abstract: The present invention provides a cylindrical magnetic levitation stage which includes a cylindrical substrate used to form micro-patterns of various arbitrary shapes on a large-area semiconductor substrate or display panel substrate, a cylindrical substrate, a combination of a first permanent magnet array and a first coil array and a combination of a first permanent magnet array and a first coil array, which are coupled to the cylindrical substrate, so that levitation, axial translation and rotation of the cylindrical substrate can be made finely through the control of a magnetic force generated by the interaction between a magnetic field generated by electric current applied to the coil arrays and a magnetic field generated from the permanent magnet arrays corresponding to the coil arrays.
    Type: Application
    Filed: September 29, 2008
    Publication date: September 29, 2011
    Applicant: Korea Electrotechnology Research Institute
    Inventors: Jeong Woo Jeon, Hyun Seok Oh, Sung II Chung, Yeon Ho Jeong, Do Hyun Kang, S.A. Nikiforov, Mitica Caraiani
  • Patent number: 7952252
    Abstract: Disclosed herein is an inner rotor type permanent magnet excited transverse flux motor, in which a laminated structure in an axial direction or in a radial shape is applied to a stator iron core so as to employ a small amount of permanent magnets compared with a conventional outer rotor type permanent magnet excited transverse flux motor, thus providing high output power, increasing the efficiency of power generation, and reducing noise and vibration.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: May 31, 2011
    Assignee: Korea Electrotechnology Research Institute
    Inventors: Do Hyun Kang, Jung Hwan Chang, Ji Young Lee, Ji Won Kim, Shi Uk Chung
  • Patent number: 7928612
    Abstract: Disclosed herein is to a flux reversal motor. The flux reversal motor includes a mover, and a plurality of permanent magnets. The mover moves linearly relative to a stator. A plurality of permanent magnets, having identical polarities, is provided in the end of each mover tooth. The permanent magnets are arranged on the left and right sides of a protrusion of the end of the mover tooth. Thus low noise/low vibration, high speeds, high precision, and high thrust motion can be realized.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: April 19, 2011
    Assignee: Korea Electrotechnology Research Institute
    Inventors: Shi Uk Chung, Do Hyun Kang, Jung Hwan Chang, Ji Won Kim, Ji Young Lee
  • Publication number: 20100327670
    Abstract: Disclosed herein is a linear, curved or rotary electric machine. The electric machine includes first and second movers which are adjacent to each other and have a phase angle difference of 60° therebetween. The first mover includes phases U, V and W and the second mover includes phases /U, /V and /W. The electric machine of the present invention can reduce pulsations of thrust caused by end effect. In particular, in the case where the stator includes permanent magnets having the same poles and salient poles which alternate with the permanent magnets, the number of permanent magnets used can be reduced to half of that of a conventional linear electric machine.
    Type: Application
    Filed: June 9, 2010
    Publication date: December 30, 2010
    Applicant: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shi Uk CHUNG, Do Hyun KANG, Byung Chul WOO, Ji Won KIM, Ji Young LEE, Seung Ryul MOON
  • Publication number: 20100259112
    Abstract: Disclosed herein is a structure for linear and rotary electric machines. The present invention provides a modular mover structure which includes coils that have an electrical phase difference of 180°, so that the path of magnetic flux is shortened, thus reducing the size of the machine and mitigating the back-EMF unbalance. Furthermore, the modular mover structure can be modified into various shapes. For example, when a skew structure is applied to a mover or stator iron core, the force ripples in an electric machine can be reduced. In addition, when a hinge structure is applied to a modular mover iron core, the mover can move in a linear and curved manner. Moreover, the structure of the present invention can be applied to a rotary electric machine. In this case, because the number of poles can be easily increased, a low speed high torque direct drive type rotary electric machine can be realized.
    Type: Application
    Filed: April 13, 2010
    Publication date: October 14, 2010
    Applicant: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shi Uk CHUNG, Do Hyun KANG, Byung Chul WOO, Ji Won KIM, Ji Young LEE, Seung Ryul MOON
  • Patent number: 7626308
    Abstract: Disclosed herein is a permanent magnet-excited transverse flux motor with an outer rotor. The permanent magnet-excited transverse flux motor comprises: a stator including a stator powdered iron core formed by an extruded molding through a mold, a pair of stator laminated iron cores stacked respectively at an upper layer portion and a lower layer portion of an outer circumference of the stator powdered iron core in such fashion as to be spaced apart from each other by a certain interval, and a stator winding interposed between the upper layer portion and the lower layer portion in such fashion as to be wound around the stator powdered iron core to form a multiple coil through which current flows; and a rotor including a plurality of rotor permanent magnets and a plurality of rotor powdered iron cores disposed on the outer circumference of the stator in such a fashion as to be are alternately arranged adjacent to one another.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: December 1, 2009
    Assignee: Korea Electrotechnology Research Institute
    Inventors: Do Hyun Kang, Jung Hwan Chang, Ji Won Kim
  • Publication number: 20090009010
    Abstract: Disclosed herein is to a flux reversal motor. The flux reversal motor includes a mover, and a plurality of permanent magnets. The mover moves linearly relative to a stator. A plurality of permanent magnets, having identical polarities, is provided in the end of each mover tooth. The permanent magnets are arranged on the left and right sides of a protrusion of the end of the mover tooth. Thus low noise/low vibration, high speeds, high precision, and high thrust motion can be realized.
    Type: Application
    Filed: June 26, 2008
    Publication date: January 8, 2009
    Applicant: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shi Uk Chung, Do Hyun Kang, Jung Hwan Chang, Ji Won Kim, Ji Young Lee
  • Patent number: 7474019
    Abstract: Disclosed herein is a permanent magnet excited transverse flux linear motor with a normal force compensation structure in which a stator is inserted in the middle of leg portions of a mover so as to compensate normal forces generated between the mover and the stator, thus reducing noise and vibration.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: January 6, 2009
    Assignee: Korea Electro Technolgy Research Institute
    Inventors: Do Hyun Kang, Jung Hwan Chang, Ji Won Kim, Shi Uk Chung