Patents by Inventor Dong Kyu Choi

Dong Kyu 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: 10937369
    Abstract: Provided herein may be a stage and an emission control driver having the same. The stage may include an output unit configured to supply a voltage of a first or second power supply to a first output terminal depending on voltages of first and second nodes, an input unit configured to control the voltages of the second node and a third node, a first signal processing unit configured to control the voltage of the first node, and supply a voltage corresponding to the first node to a second output terminal, a second signal processing unit including a second capacitor coupled between the third node and a fifth node, the second signal processing unit being configured to control the voltage of the first node, and control a potential difference between opposite terminals of the second capacitor, and a third signal processing unit configured to control the voltage of the second node.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: March 2, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chul Kyu Kang, Dae Hyun Kim, Sung Hwan Kim, Soo Hee Oh, Dong Sun Lee, Sang Moo Choi
  • Publication number: 20210050638
    Abstract: A secondary battery may include a cell body member accommodating an electrode assembly therein and provided adjacently to a cooling plate member; and a heat conductive member provided in at least a portion between the cell body member and the cooling plate member to form a heat path for transferring heat from the cell body member. The cell body member, in contact with the heat conductive member on a lower surface thereof, includes a surface area-increasing groove formed to be concave in the lower surface thereof.
    Type: Application
    Filed: August 11, 2020
    Publication date: February 18, 2021
    Inventors: Yang Kyu Choi, Seok Min Kim, Myeong Hwan Ma, Seo Roh Rhee, Hae Ryong Jeon, Seung Hoon Ju, Dong Ha Hwang
  • Publication number: 20210049538
    Abstract: A work object processing apparatus includes: a message thread processing unit configured to be displayed through a chat room of an Internet messenger associated with a message thread, to receive a work object including a work producer, a work processor, and work contents, and to process a work object operation on the message thread; and a work object processing unit configured to process a work object state of the work object changed, from among a plurality of work object states of the work object included in a work processing diagram, based on a work interaction between the work producer and the work processor.
    Type: Application
    Filed: October 30, 2020
    Publication date: February 18, 2021
    Applicants: DELTA PDS CO., LTD
    Inventors: Hyun Kyu CHOI, Dong Kyu CHOI, Jae Ho CHOI
  • Publication number: 20210028518
    Abstract: A battery module according to an embodiment of the present disclosure includes a plurality of secondary battery cells; and a housing member including a cooling plate member, and a heat conductive member provided between the secondary battery cells and the cooling plate member to form a heat path for transferring heat from the secondary battery cells to the cooling plate member, the housing member having the plurality of secondary battery cells accommodated therein, wherein the heat conductive member is comprised such that a portion of the heat conductive member in contact with a secondary battery cell that is supercooled has a lower thermal conductivity than a remaining portion of the heat conductive member.
    Type: Application
    Filed: July 23, 2020
    Publication date: January 28, 2021
    Inventors: Hae Ryong JEON, Seok Min KIM, Myeong Hwan MA, Seo Roh RHEE, Seung Hoon JU, Yang Kyu CHOI, Dong Ha HWANG
  • Publication number: 20210028519
    Abstract: A secondary battery may include a cell body member accommodating an electrode assembly therein; and a heat conductive member disposed between the cell body member and a cooling plate member to form a heat path for transferring heat from the cell body member, wherein the heat conductive member is in contact with the cooling plate member, and wherein a contact area of the cooling plate member and the heat conductive member is smaller than a cross-sectional area of the cell body member parallel to a thickness direction of the electrode assembly.
    Type: Application
    Filed: July 23, 2020
    Publication date: January 28, 2021
    Inventors: Dong Ha HWANG, Seok Min KIM, Myeong Hwan MA, Seo Roh RHEE, Hae Ryong JEON, Seung Hoon JU, Yang Kyu CHOI
  • Patent number: 10888844
    Abstract: Provided is a catalyst for oxidative dehydrogenation, a method of preparing the catalyst, and a method of performing oxidative dehydrogenation using the catalyst. The catalyst for oxidative dehydrogenation has improved durability and fillability by including a porous support coated with a metal oxide (AB2O4) according to Equation 1 of the present invention, wherein the metal oxide exhibits activity during oxidative dehydrogenation. Therefore, when the catalyst is used in oxidative dehydrogenation of butene, the conversion rate of butene and the selectivity and yield of butadiene may be greatly improved.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: January 12, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Myung Ji Suh, Dong Hyun Ko, Kyong Yong Cha, Dae Heung Choi, Ye Seul Hwang, Jun Kyu Han, Sun Hwan Hwang
  • Publication number: 20210005638
    Abstract: A display apparatus includes an oxide semiconductor pattern disposed on a device substrate and including a channel region disposed between a source region and a drain region, a gate electrode overlapping the channel region of the oxide semiconductor pattern and having a structure in which a first hydrogen barrier layer and a gate conductive layer are stacked, and a gate insulating film disposed between the oxide semiconductor pattern and the gate electrode to expose the source region and the drain region of the oxide semiconductor pattern. The gate electrode exposes a portion of the gate insulating film that is adjacent to the source region and a portion of the gate insulating film that is adjacent to the drain region.
    Type: Application
    Filed: July 3, 2020
    Publication date: January 7, 2021
    Inventors: So-Young NOH, Ki-Tae KIM, Kyeong-Ju MOON, Hyuk JI, Jin-Kyu ROH, Jung-Doo JIN, Kye-Chul CHOI, Dong-Yup KIM, Chan-Ho KIM
  • Publication number: 20210005693
    Abstract: A display apparatus including a first thin-film transistor, a second thin-film transistor and a third thin-film transistor is provided. The first thin-film transistor includes a first active layer composed of a polysilicon material, a first gate electrode overlapping the first active layer such that a first gate insulating layer is interposed therebetween, a first source electrode and a first drain electrode. The first gate electrode includes n layers. The first source electrode and the first drain electrode are connected to the first active layer. The second thin-film transistor includes a second active layer composed of a polysilicon material, a second gate electrode overlapping the second active layer such that a first gate insulating layer is interposed therebetween, a second source electrode and a second drain electrode. The second gate electrode includes n+1 layers. The second source electrode and the second drain electrode are connected to the second active layer.
    Type: Application
    Filed: July 6, 2020
    Publication date: January 7, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: Seong-Pil CHO, Dong-Yup KIM, Kyung-Mo SON, Sang-Soon NOH, Jun-Seuk LEE, Yong-Bin KANG, Kye-Chul CHOI, Sung-Ho MOON, Sang-Gul LEE, Byeong-Keun KIM, Kyoung-Soo LEE, Hyun-Gyo JEONG, Jin-Kyu ROH, Jung-Doo JIN, Ki-Hyun KWON, Hee-Jin JUNG, Jang-Dae KIM, Won-Ho SON, Chan-Ho KIM
  • Patent number: 10870647
    Abstract: The present invention relates to a novel imidazopyridine derivative, a method for preparing the same, and a pharmaceutical composition containing the same as an active ingredient for preventing or treating cancer. The novel imidazopyridine derivative according to the present invention, a stereoisomer thereof and a pharmaceutically acceptable salt thereof can effectively inhibit cancer-related kinases, are excellent in inhibiting proliferation of cancer cells in a cancer cell line, and effectively inhibit proliferation of cancer cells (cancer cell apoptosis) in a cancer cell heterograft model, and thus can be useful as a pharmaceutical composition containing the same as an active ingredient for preventing or treating cancer.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: December 22, 2020
    Assignee: DAEGU-GYEONGBUK MEDICAL INNOVATION FOUNDATION
    Inventors: Hwan Geun Choi, Jung Beom Son, Shinae Kim, Seungyeon Lee, Eunhwa Ko, Joongheui Cho, Seock Yong Kang, So Young Kim, Jin-Hee Park, Yi Kyung Ko, Hee Yoon Ryu, Nam Doo Kim, Hyunkyoung Kim, Younho Lee, Sun-Hwa Lee, Dayea Kim, Sun Joo Lee, Seongho Hong, Sang Hyun Min, Sungwoo Lee, Dong Kyu Choi, Jae Hyun Bae, Eunmi Hong, Tae-Ho Jang, Jaeyoung Song, Sangbum Kim, Suk Kyoon Yoon
  • Publication number: 20200391617
    Abstract: A system for reducing driver fatigue in a seat includes an electric reclining device configured to recline a seat back, an electric extension device configured to move an extension unit formed at a front end part of a seat cushion forward and backward, an air cell device including a plurality of air cells installed in the seat back to be expandable, and a controller configured to control driving of the reclining device, the extension device, and the air cell device in a designated driving pattern to implement a driver fatigue reduction posture of the seat.
    Type: Application
    Filed: October 7, 2019
    Publication date: December 17, 2020
    Inventors: Baek Hee Lee, Dong Woo Jeong, Tae Uk Kang, Sun Woo Choi, Hyun Kyu Park, Seung Young Lee, Sang Do Park, Yo Seob Lee, Yeong Sik Kim, Hee Cheon You, Seung Hoon Lee, Min Jae Kim, Jeong Bae Ko
  • Patent number: 10860958
    Abstract: A work object processing apparatus includes a memory unit configured to include a user memory region associated with user information, a message thread memory region accessible through the user information and associated with a message thread, and a work object memory region accessible through the message thread and associated with a work object, a message thread processing unit configured to receive a work object, including a work producer, a work processor, and work contents, through a chat room associated with a message thread and to process work object operation on the message thread, and a work object processing unit configured to process a work object state of the work object changed in a work processing diagram depending on a work interaction between the work producer and the work processor.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: December 8, 2020
    Assignees: DELTA PDS CO., LTD
    Inventors: Hyun Kyu Choi, Dong Kyu Choi, Jae Ho Choi
  • Publication number: 20200383051
    Abstract: A power control method of a base station in a wireless communication system based on Orthogonal Frequency Division Multiple Access (OFDMA) is provided for reducing power consumption by turning off the bias of the power amplifier for the duration of a symbol carrying no user data. The method includes checking scheduling information of radio resources, detecting a symbol carrying no user data, based on the scheduling information, and turning off a bias of the power amplifier for a symbol duration of the symbol carrying no user data. The transmission power control method is capable of reducing power consumption of the base station by turning off the bias of the power amplifier of the base station for the symbol duration in which no user data is transmitted.
    Type: Application
    Filed: August 14, 2020
    Publication date: December 3, 2020
    Inventors: Dong Geun LEE, Young Bae PARK, Young Kyu CHOI, Ki Back KIM
  • Patent number: 10854845
    Abstract: A display device may include a substrate having a first pixel area, a first electrode on the substrate; a passivation layer between the substrate and the first electrode, a second electrode on the first electrode, and an organic emission layer between the first electrode and the second electrode. The first pixel area may include an emission area and a non-emission area surrounded by the emission area.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: December 1, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Won Se Lee, Won Kyu Kwak, Dong Wook Kim, Ae Shin, Sang Hun Oh, Jang Kyu Yim, Jun Ho Choi
  • Patent number: 10851488
    Abstract: In a washing machine having a door locking device that allows a door to keep an opening closed, the door locking device includes a latch configured to move in a first direction to restrict the door and move in a second direction, which is opposite the first direction, to release the restriction on the door and a locker configured to limit movement of the latch in the second direction. By such a configuration, the door can be opened/closed, restricted, and opened using a single device.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: December 1, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ju-Yeong Kim, Nam Soo Park, Jea Won Lee, Hyeon Kyu Lim, Dong-il Back, Jun-young Choi
  • Publication number: 20200374797
    Abstract: A power control method of a base station in a wireless communication system based on Orthogonal Frequency Division Multiple Access (OFDMA) is provided for reducing power consumption by turning off the bias of the power amplifier for the duration of a symbol carrying no user data. The method includes checking scheduling information of radio resources, detecting a symbol carrying no user data, based on the scheduling information, and turning off a bias of the power amplifier for a symbol duration of the symbol carrying no user data. The transmission power control method is capable of reducing power consumption of the base station by turning off the bias of the power amplifier of the base station for the symbol duration in which no user data is transmitted.
    Type: Application
    Filed: August 14, 2020
    Publication date: November 26, 2020
    Inventors: Dong Geun Lee, Young Bae Park, Young Kyu Choi, Ki Back Kim
  • Patent number: 10843173
    Abstract: A ferrite catalyst for oxidative dehydrogenation and a method of preparing the same. The ferrite catalyst is prepared using an epoxide-based sol-gel method, wherein a step of burning includes a first burning step, in which burning is performed at a temperature of 70 to 200° C.; and a second burning step, in which burning is performed after the temperature is raised from a temperature in the range of greater than 200° C. to 250° C. to a temperature in the range of 600 to 900° C.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: November 24, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Sun Hwan Hwang, Dong Hyun Ko, Jun Han Kang, Kyong Yong Cha, Joo Hyuck Lee, Hyun Seok Nam, Dae Heung Choi, Myung Ji Suh, Ye Seul Hwang, Jun Kyu Han, Sang Jin Han, Seong Min Kim
  • Publication number: 20200258946
    Abstract: An organic light emitting display is provided. The organic light emitting display includes a first base substrate; a plurality of organic light emitting diodes disposed on the first base substrate; an encapsulation layer disposed on the organic light emitting diodes; and a plurality of first color conversion filters disposed on the encapsulation layer. The encapsulation layer includes: a first sub-inorganic layer disposed on the organic light emitting diodes; a second sub-inorganic layer disposed on the first sub-inorganic layer and having a refractive index different from that of the first sub-inorganic layer; an organic layer disposed on the second sub-inorganic layer; and a third sub-inorganic layer disposed on the organic layer.
    Type: Application
    Filed: December 6, 2019
    Publication date: August 13, 2020
    Inventors: Yo Han KIM, Yong Tack KIM, Yoon Hyeung CHO, Jong Jin PARK, Deok Chan YOON, Yun Kyu LEE, Dong Uk CHOI
  • Publication number: 20200239109
    Abstract: A BOG reliquefaction system includes: a compressor; a heat exchanger cooling the BOG compressed by the compressor through heat exchange using BOG not compressed by the compressor; a pressure reducer disposed downstream of the heat exchanger and reducing a pressure of fluid cooled by the heat exchanger; and a combination of a first temperature sensor disposed upstream of a cold fluid channel of the heat exchanger and a fourth temperature sensor disposed downstream of a hot fluid channel of the heat exchanger, combination of a second temperature sensor disposed downstream of the cold fluid channel of the heat exchanger and a third temperature sensor disposed upstream of the hot fluid channel of the heat exchanger, or combination of a first pressure sensor disposed upstream of the hot fluid channel of the heat exchanger and a second pressure sensor disposed downstream of the hot fluid channel of the heat exchanger.
    Type: Application
    Filed: August 3, 2017
    Publication date: July 30, 2020
    Inventors: Joon Chae LEE, Dong Kyu CHOI, Hyun Jun SHIN
  • Patent number: 10714667
    Abstract: A method of manufacturing a light emitting device includes forming light emitting devices on a support portion, each of the light emitting devices including first to third light emitting cells respectively emitting light of different colors; supplying test power to at least a portion of the light emitting devices using a multi-probe; acquiring an image from the light emitted from the portion of the light emitting devices to which the test power is supplied using an image sensor; identifying normal light emitting devices of the portion of the light emitting devices by determining whether a defect is present in each of the light emitting devices of the portion of the light emitting devices by comparing the image acquired by the image sensor with a reference image; and based on the identifying step, measuring optical characteristics of each of the light emitting devices identified as normal of the portion of the light emitting devices.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: July 14, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hye Seok Noh, Young Jin Choi, Yong Il Kim, Han Kyu Seong, Dong Gun Lee, Jin Sub Lee
  • Patent number: 10707393
    Abstract: A light emitting device package including a cell array including first, second and third light emitting devices each including a first conductivity-type semiconductor layer, an active layer, and a second conductivity-type semiconductor layer, the cell array having a first surface and a second surface opposing the first surface, a light-transmissive substrate including a first wavelength conversion portion and a second wavelength conversion portion corresponding to the first light emitting device and the second light emitting device, respectively, and bonded to the first surface, and a eutectic bonding layer including a first light emitting window, a second light emitting window and a third light emitting window corresponding to the first light emitting device, the second light emitting device and the third light emitting device, respectively, and bonding the light-transmissive substrate and the first to third light emitting devices to each other may be provided.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: July 7, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong Gun Lee, Yong Il Kim, Han Kyu Seong, Ji Hye Yeon, Jin Sub Lee, Young Jin Choi