Patents by Inventor Jong-Hyeon Choi

Jong-Hyeon 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: 20240145672
    Abstract: Provided is a positive electrode active material which includes an inner region that is a region from the center of the positive electrode active material particle to R/2, and an outer region that is a region from R/2 to the surface of the positive electrode active material particle, wherein R is a distance from the center of the positive electrode active material particle to the surface thereof. The positive electrode active material further includes 25% to 80% of crystallites C with respect to a total number of crystallites in the outer region. The crystallites C have a high crystallite long-axis orientation degree of 0.5 to 1 and a low crystallite c-axis orientation degree less than 0.5. Thus, the positive electrode active material has high capacity characteristics and a small amount of gas generated.
    Type: Application
    Filed: March 22, 2022
    Publication date: May 2, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Won Sig Jung, Hwan Young Choi, Jong Pil Kim, Yeo June Yoon, Kang Hyeon Lee, Tae Young Rhee, Yong Jo Jung
  • Publication number: 20240088379
    Abstract: Provided is a positive electrode active material which includes an inner region that is a region from the center of the positive electrode active material particle to R/2; and an outer region that is a region from R/2 to the surface of the positive electrode active material particle, wherein R is a distance from the center of the positive electrode active material particle to the surface thereof. The positive electrode active material further includes 30% to 80% of crystallites A with respect to a total number of crystallites in the outer region of the positive electrode active material, the crystallites A having high crystallite long-axis orientation degree and crystallite c-axis orientation degree. Thus, the positive electrode active material can achieve excellent capacity characteristics and service life characteristics.
    Type: Application
    Filed: March 22, 2022
    Publication date: March 14, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Won Sig Jung, Hwan Young Choi, Jong Pil Kim, Yeo June Yoon, Kang Hyeon Lee, Tae Young Rhee, Yong Jo Jung
  • Patent number: 11561424
    Abstract: Provided is a tiled display device including a plurality of display devices each having a display panel including a plurality of pixels and a support plate disposed under the display panel, a lower cover including an alignment hole and coupled to a lower portion of the support plate of each of the plurality of display devices, and a first coupling member including a base portion fixed to the support plate and a first coupling portion protruding from the base portion and passing through the alignment hole. A diameter of the first coupling portion is smaller than a diameter of the alignment hole.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: January 24, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong Hyeon Choi, Haeng Won Park, Il Hyun Yang, Dae Hwan Jang, Jin Ho Cho
  • Publication number: 20210325711
    Abstract: Provided is a tiled display device including a plurality of display devices each having a display panel including a plurality of pixels and a support plate disposed under the display panel, a lower cover including an alignment hole and coupled to a lower portion of the support plate of each of the plurality of display devices, and a first coupling member including a base portion fixed to the support plate and a first coupling portion protruding from the base portion and passing through the alignment hole. A diameter of the first coupling portion is smaller than a diameter of the alignment hole.
    Type: Application
    Filed: January 28, 2021
    Publication date: October 21, 2021
    Inventors: Jong Hyeon CHOI, Haeng Won PARK, Il Hyun YANG, Dae Hwan JANG, Jin Ho CHO
  • Patent number: 10795193
    Abstract: A display device includes a display module, a circuit board, and a shield cover. The display module includes a display panel. The circuit board is disposed under the display module and is connected to a first side of the display panel. The shield cover includes a body portion, a side portion, and a first support portion. The body portion is disposed under the circuit board. The side portion extends in an upward direction from a first side of the body portion along a first side surface of the display module, the first side surface of the display module being adjacent to the first side of the display panel. The first support portion protrudes in the upward direction from a second side of the body portion adjacent to the first side of the body portion, the first support portion contacting a lower surface of the display module.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: October 6, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byoung Jin Jin, Seung Jae Kang, Dong Jin Park, Jong Hyeon Choi
  • Patent number: 10670799
    Abstract: A backlight unit includes a light guide plate (LGP), a housing that receives the LGP, and a first LGP guide member coupled to the housing. The housing includes a bottom surface, a first sidewall, and a second sidewall. The first and second sidewalls are connected to edges of the bottom surface, are disposed adjacent to each other, and are spaced apart from each other. A first corner of the bottom surface is disposed between the first and second sidewalls, and the first LGP guide member is disposed in a gap between the first and second sidewalls.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: June 2, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Won Chul Lee, Dong Jin Park, Taek Sun Shin, Jin Gyu Sim, Jung Gil Oh, Kwang Sun You, Byoung Jin Jin, Jong Hyeon Choi
  • Publication number: 20190353950
    Abstract: A display device includes a display module, a circuit board, and a shield cover. The display module includes a display panel. The circuit board is disposed under the display module and is connected to a first side of the display panel. The shield cover includes a body portion, a side portion, and a first support portion. The body portion is disposed under the circuit board. The side portion extends in an upward direction from a first side of the body portion along a first side surface of the display module, the first side surface of the display module being adjacent to the first side of the display panel. The first support portion protrudes in the upward direction from a second side of the body portion adjacent to the first side of the body portion, the first support portion contacting a lower surface of the display module.
    Type: Application
    Filed: March 21, 2019
    Publication date: November 21, 2019
    Inventors: Byoung Jin JIN, Seung Jae KANG, Dong Jin PARK, Jong Hyeon CHOI
  • Publication number: 20190179077
    Abstract: A backlight unit includes a light guide plate (LGP), a housing that receives the LGP, and a first LGP guide member coupled to the housing. The housing includes a bottom surface, a first sidewall, and a second sidewall. The first and second sidewalls are connected to edges of the bottom surface, are disposed adjacent to each other, and are spaced apart from each other. A first corner of the bottom surface is disposed between the first and second sidewalls, and the first LGP guide member is disposed in a gap between the first and second sidewalls.
    Type: Application
    Filed: October 19, 2018
    Publication date: June 13, 2019
    Inventors: WON CHUL LEE, Dong Jin Park, Taek Sun Shin, Jin Gyu Sim, Jung Gil Oh, Kwang Sun You, Byoung Jin Jin, Jong Hyeon Choi
  • Patent number: 9827899
    Abstract: A system mounted in a vehicle to recognize load capacity change is disclosed. The system includes a lamp, a micro controller unit (MCU) configured to adaptively control the system based on load capacity of the lamp, an intelligent power switch (IPS) having a front end connected to the MCU and a rear end connected to the lamp, and a sensing resistor connected between the MCU and the IPS.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: November 28, 2017
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, KYUNGSHIN CO., LTD.
    Inventors: Sung Kwan Choo, Geon Gu Kang, Gwang Seob Kim, Jong Hyeon Choi, Dae Hyeon Kim
  • Publication number: 20170203681
    Abstract: A system mounted in a vehicle to recognize load capacity change is disclosed. The system includes a lamp, a micro controller unit (MCU) configured to adaptively control the system based on load capacity of the lamp, an intelligent power switch (IPS) having a front end connected to the MCU and a rear end connected to the lamp, and a sensing resistor connected between the MCU and the IPS.
    Type: Application
    Filed: October 12, 2016
    Publication date: July 20, 2017
    Inventors: Sung Kwan CHOO, Geon Gu KANG, Gwang Seob KIM, Jong Hyeon CHOI, Dae Hyeon KIM
  • Patent number: 5430602
    Abstract: A circuit is provided for protecting the internal circuit of a semiconductor device from electrostatic discharge (ESD). This circuit includes an input pad for applying an input signal to the internal circuit, a metal line for electrically connecting the input pad and internal circuit. This metal line has at least one RC delay stage caused by inherent parasitic resistances and capacitances. Also, a punch-through element is provided to connect the metal line to a ground voltage terminal disposed between the input pad and a delay stage. Finally, a resistor is used to connect the at least one delay stage to the internal circuit.
    Type: Grant
    Filed: March 31, 1993
    Date of Patent: July 4, 1995
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dae-Je Chin, Jong-Hyeon Choi
  • Patent number: 5404330
    Abstract: A word line boosting circuit and a control circuit therefor in a semiconductor integrated circuit are included. A word line boosting control circuit is connected to receive block select information selecting a first or second memory cell array block synchronized to a predetermined row address, and selectively generates first and second word line voltages.
    Type: Grant
    Filed: December 6, 1993
    Date of Patent: April 4, 1995
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yeong-Taek Lee, Jong-Hyeon Choi