Patents by Inventor Hong-Seok Choi

Hong-Seok 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).

  • Publication number: 20210066663
    Abstract: Disclosed is a display panel configured such that, in a structure in which the distance between a display surface and a viewer is short, the structure between a reflective plate and a first electrode (an anode) is changed such that light having three or more color peak properties for all subpixels is transmitted through a second electrode (a cathode), whereby white expression as well as color expression is possible, and a head mounted display device including the same.
    Type: Application
    Filed: August 21, 2020
    Publication date: March 4, 2021
    Inventors: Seung-Ryong JOUNG, Hong-Seok CHOI, Yoon-Deok HAN, Gyeong-Woo KIM, Jun-Ho LEE, Ji-Seon JANG
  • Patent number: 10931305
    Abstract: A data serialization circuit includes a clock data operation circuit configured to generate a plurality of delay clock signals and a plurality of synchronous data signals in response to a plurality of parallel data signals and a plurality of multi-phase clock signals and a multiplexer configured to output a serial data signal in response to the plurality of delay clock signals and the plurality of synchronous data signals. A first one of the plurality of delay clock signals substantially aligns with a first one of the plurality of synchronous data signals.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: February 23, 2021
    Assignees: SK hynix Inc., Seoul National University R&DB Foundation
    Inventors: Hong Seok Choi, Jeongho Hwang, Hyungrok Do, Deog-Kyoon Jeong
  • Publication number: 20200411787
    Abstract: An organic light emitting display device comprises two emission portions between first and second electrodes, wherein at least one among the two emission portions includes two emitting layers, whereby efficiency and a color reproduction ratio may be improved.
    Type: Application
    Filed: September 9, 2020
    Publication date: December 31, 2020
    Applicant: LG Display Co., Ltd.
    Inventors: Sung Hoon PIEH, Chang Wook HAN, Hong Seok CHOI, Ki-Woog SONG, So Yeon AHN, Seung Hyun KIM
  • Publication number: 20200395062
    Abstract: A semiconductor memory device includes a bitline driver configured to drive a global bitline; a memory cell array including a first memory cell that is coupled between a cell wordline and a cell bitline; a bitline decoder including a bitline switch that couples the global bitline and the cell bitline; a wordline decoder including a wordline switch that couples a global wordline and the cell wordline; a sense amplifier configured to output a sensing signal corresponding to a state of the first memory cell based on a voltage of the global bitline; and a control circuit configured to control the bitline driver, the bitline decoder, the wordline decoder and the sense amplifier during a first read operation for the first memory cell.
    Type: Application
    Filed: December 12, 2019
    Publication date: December 17, 2020
    Inventors: Hong Seok CHOI, Hyungrok DO, Deog-Kyoon JEONG
  • Patent number: 10818862
    Abstract: An organic light emitting display device comprises two emission portions between first and second electrodes, wherein at least one among the two emission portions includes two emitting layers, whereby efficiency and a color reproduction ratio may be improved.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: October 27, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Sung Hoon Pieh, Chang Wook Han, Hong Seok Choi, Ki-Woog Song, So Yeon Ahn, Seung Hyun Kim
  • Publication number: 20200335937
    Abstract: A driving circuit includes an input circuit slice configured to convert a data signal into a first data signal and a second data signal having different DC components. The driving circuit also includes a driver slice configured to output driving current at an output node by generating push current or pull current according to the first data signal and the second data signal, wherein a magnitude of the push current or the pull current is variable.
    Type: Application
    Filed: December 10, 2019
    Publication date: October 22, 2020
    Applicants: SK hynix Inc., Seoul National University R&DB Foundation
    Inventors: Jeongho HWANG, Hong Seok CHOI, Hyungrok DO, Deog-Kyoon JEONG
  • Publication number: 20200321977
    Abstract: A data serialization circuit includes a clock data operation circuit configured to generate a plurality of delay clock signals and a plurality of synchronous data signals in response to a plurality of parallel data signals and a plurality of multi-phase clock signals and a multiplexer configured to output a serial data signal in response to the plurality of delay clock signals and the plurality of synchronous data signals. A first one of the plurality of delay clock signals substantially aligns with a first one of the plurality of synchronous data signals.
    Type: Application
    Filed: October 22, 2019
    Publication date: October 8, 2020
    Inventors: Hong Seok CHOI, Jeongho HWANG, Hyungrok DO, Deog-Kyoon JEONG
  • Patent number: 10741781
    Abstract: An organic light emitting device can include first and second electrodes formed to face each other on a substrate; a first stack interposed between the first and second electrode and configured with a hole injection layer, a first hole transportation layer, a first light emission layer and a first electron transportation layer which are stacked on the first electrode; a second stack interposed between the first stack and the second electrode and configured with a second hole transportation layer, a second light emission layer, a third light emission layer and a second electron transportation layer which are stacked on the first stack; a third stack interposed between the second stack and the second electrode and configured with a third hole transportation layer, a fourth light emission layer, a third electron transportation layer and an electron injection layer which are stacked on the second stack; and a first charge generation layer interposed between the first and second stacks and a second charge generati
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: August 11, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Tae Sun Yoo, Hwa Kyung Kim, Hong Seok Choi, Jae Il Song, Mi Young Han, Shin Han Kim, Hye Min Oh
  • Publication number: 20200168828
    Abstract: An organic light emitting display device comprises two emission portions between first and second electrodes, wherein at least one among the two emission portions includes two emitting layers, whereby efficiency and a color reproduction ratio may be improved.
    Type: Application
    Filed: January 29, 2020
    Publication date: May 28, 2020
    Applicant: LG Display Co., Ltd.
    Inventors: Sung Hoon PIEH, Chang Wook HAN, Hong Seok CHOI, Ki-Woog SONG, So Yeon AHN, Seung Hyun KIM
  • Publication number: 20200131199
    Abstract: Provided is a pharmaceutical composition for preventing and treating tumors, the pharmaceutical composition including an imidazooxazole derivative compound, a solvate, a stereoisomer, or a pharmaceutically acceptable salt thereof as an active ingredient. The pharmaceutical composition is administered to an entity which has developed a tumor or is in danger of developing a tumor, and thus tumors can be prevented or treated.
    Type: Application
    Filed: December 31, 2019
    Publication date: April 30, 2020
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Gamal El-din MAHMOUD, Hong Seok CHOI, Kyung Ho YOO, Dong Keun HAN, Chang Hyun OH, Abdel-Maksoud MOHAMMED, I. El-Gamal MOHAMMED, Usama M. AMMAR
  • Patent number: 10586939
    Abstract: An organic light emitting display device comprises two emission portions between first and second electrodes, wherein at least one among the two emission portions includes two emitting layers, whereby efficiency and a color reproduction ratio may be improved.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: March 10, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Sung Hoon Pieh, Chang Wook Han, Hong Seok Choi, Ki-Woog Song, So Yeon Ahn, Seung Hyun Kim
  • Patent number: 10570155
    Abstract: Provided is a pharmaceutical composition for preventing and treating tumors, the pharmaceutical composition including an imidazooxazole derivative compound, a solvate, a stereoisomer, or a pharmaceutically acceptable salt thereof as an active ingredient. The pharmaceutical composition is administered to an entity which has developed a tumor or is in danger of developing a tumor, and thus tumors can be prevented or treated.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: February 25, 2020
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Gamal El-din Mahmoud, Hong Seok Choi, Kyung Ho Yoo, Dong Keun Han, Chang Hyun Oh, Abdel-Maksoud Mohammed, I. El-Gamal Mohammed
  • Publication number: 20200027932
    Abstract: A head mounted display device comprises a display panel comprising first to third subpixels defined at a substrate, a reflection plate provided in the first, second and third subpixels, first electrodes vertically spaced apart from a lower surface of the reflection plate by a first distance, a second distance and a third distance at the first, second and third subpixels, respectively, a white organic stack on the first electrodes at the first, second and third subpixels, a second electrode on the white organic stack, and a first color filter on the second electrode at the third subpixel to transmit light having a long wavelength.
    Type: Application
    Filed: July 19, 2019
    Publication date: January 23, 2020
    Applicant: LG Display Co., Ltd.
    Inventors: Hong-Seok CHOI, Yoon-Deok HAN, Gyeong-Woo KIM, Jun-Ho LEE
  • Publication number: 20200013459
    Abstract: A semiconductor memory device includes a memory cell array including one or more memory cells each coupled between a wordline and a bitline, a sense amplifier configured to amplify a voltage of a global wordline, a wordline decoder including a plurality of wordline switches coupling the wordline and the global wordline, and a control circuit configured to control the wordline decoder and the sense amplifier.
    Type: Application
    Filed: June 25, 2019
    Publication date: January 9, 2020
    Inventors: Hyungrok DO, Hong Seok CHOI, Deog-Kyoon JEONG
  • Patent number: D871632
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: December 31, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Hyeong Seon Kim, Hong Seok Choi, Ji Hoon Baek, Jae Min Choi, Da Young Jeong, Jung Kyu Yang
  • Patent number: D872328
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: January 7, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Hyeong Seon Kim, Hong Seok Choi, Ji Hoon Baek, Jae Min Choi, Da Young Jeong, Jung Kyu Yang
  • Patent number: D872914
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: January 14, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Hyeong Seon Kim, Hong Seok Choi, Ji Hoon Baek, Jae Min Choi, Da Young Jeong, Jung Kyu Yang
  • Patent number: D873753
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: January 28, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Min Hyoung Ahn, Hong Seok Choi
  • Patent number: D896713
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: September 22, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Hong Seok Choi, Cheol O Kim
  • Patent number: D914254
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: March 23, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Jin Hyun Kim, Hong Seok Choi