Patents by Inventor Gil Choi

Gil 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: 11667114
    Abstract: An apparatus configured to manufacture a display device and a method of manufacturing a display device include a stage configured to place a process target object on an upper surface thereof; a bending head in contact with the process target object to bend the process target object; a distance measurement sensor installed above the stage to be movable in a horizontal direction; and a cylinder configured to adjust a vertical position of the bending head.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: June 6, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Myung Gil Choi, Jung Min Lee, Min Ha Yun, Sang Moo Lee
  • Publication number: 20230133032
    Abstract: A secondary battery includes an electrode assembly including a plurality of first electrode plates coated with a first active material, a plurality of second electrode plates coated with a second active material, and a separator between each of the first and second electrode plates. The first electrode plates include a plurality of first base material tabs respectively protruding therefrom, and the second electrode plates include a plurality of second base material tabs respectively protruding therefrom. The first base material tabs are gathered at one end of the electrode assembly in a thickness direction of the electrode assembly and coupled to each other, and the second base material tabs are gathered at the one end of the electrode assembly and coupled to each other.
    Type: Application
    Filed: October 28, 2022
    Publication date: May 4, 2023
    Inventors: Jeong Soon SHIN, Kyu Gil CHOI
  • Patent number: 11632117
    Abstract: The present invention relates to a frequency modulation method based on a phase-locked loop capable of performing fast modulation independent of bandwidth. A frequency modulation system based on a phase-locked loop capable of performing fast modulation independent of bandwidth according to the present invention includes a loop filter including a proportional path and an integral path to determine a bandwidth of a phase-locked loop, a voltage-controlled oscillator configured to adjust a frequency according to an output of the loop filter, and a slope alternator configured to alternate an input current of the loop filter, wherein the slope alternator is located in the integral path of the loop filter to generate an offset current at a moment of change from a modulation rise to a modulation fall.
    Type: Grant
    Filed: October 28, 2021
    Date of Patent: April 18, 2023
    Assignees: Electronics and Telecommunications Research Institute, Korea Advanced Institute of Science and Technology
    Inventors: Han Gil Choi, Sang Heung Lee, Seong Hwan Cho
  • Patent number: 11605315
    Abstract: A display device, an apparatus for manufacturing a display device and a method of manufacturing a display device are provided. A display device includes a flexible substrate including a main region, a bending region, which extends from an end of the main region, and a sub-region, which extends from an end of the bending region, the sub-region being reversed from the bending region to be attached on a rear surface of the main region, and an active element layer disposed in the main region of the flexible substrate, wherein a thickness of the flexible substrate is greater in the bending region than in the main region and the sub-region.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: March 14, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Myung Gil Choi, Jung Min Lee, Dong Woo Kim, Sang Moo Lee
  • Patent number: 11537517
    Abstract: A memory device comprises: a page buffer including a first and second latch, a control circuit configured to perform reading data of a word line and storing the data in the first latch, perform discharging the word line, perform moving the data of the first latch to the second latch, and perform outputting the data of the second latch to an exterior, and a control logic configured to control the control circuit such that an execution section of the discharge and moving for a first word line at least partially overlap each other when a second or third cache read command is inputted in a section in which the storage or discharge for the first word line is performed in response to a first cache read command for the first word line.
    Type: Grant
    Filed: October 4, 2021
    Date of Patent: December 27, 2022
    Assignee: SK hynix Inc.
    Inventors: Gwan Park, Jeong Gil Choi
  • Publication number: 20220407185
    Abstract: A secondary battery includes a Z stack electrode assembly including a separator bent in a Z shape and including a plurality of bent areas, a first electrode plate on a lower portion of each of the bent areas, and a second electrode plate on an upper portion of each of the bent areas, and an exterior portion configured to accommodate the Z stack electrode assembly, and an outermost end area of the separator is bent to be thermally fused to a bent area of the plurality of bent areas of the separator.
    Type: Application
    Filed: June 15, 2022
    Publication date: December 22, 2022
    Inventors: Kyu Gil CHOI, Won Wook CHO
  • Publication number: 20220393135
    Abstract: A display device includes a first area in which a foreign substance is disposed and a second area in which the foreign substance is not disposed. The display device includes a lower panel including a base layer, a display element layer, and an encapsulation layer, an upper panel disposed on the lower panel and including a light control layer and a color filter layer, and a filling layer filling a space between the lower panel and the upper panel. A distance between the display element layer and the light control layer in the first area is greater than a distance between the display element layer and the light control layer in the second area. Accordingly, defects caused by the foreign substance are prevented, and a display quality and a reliability of the display device are increased.
    Type: Application
    Filed: April 6, 2022
    Publication date: December 8, 2022
    Applicant: Climate LLC
    Inventors: Young-Gil Choi, Changmo Koo, Gwang-Hee Kim, Jae-Myong Kim, Jungkwon Kim, Byougduk Lee
  • Patent number: 11523516
    Abstract: A bending apparatus including a stage on which a bending object is positioned, a bending bar, a drive unit connected to the bending bar and configured to move the bending bar according to a standard route to bend the bending object by coming into contact with the bending object, and a measuring unit that measures a movement route of the bending bar.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: December 6, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae Woo Lee, Jung Min Lee, Jin Woo Kim, Hong Ju Mun, Seung Joo Lee, Myung Gil Choi
  • Publication number: 20220376366
    Abstract: Embodiments of the present disclosure relate to a secondary battery, and may provide a secondary battery capable of protecting an electrode assembly and improving battery capacity relative to the same volume. Embodiments of the present disclosure include a secondary battery including an electrode assembly including a first electrode plate having a first substrate tab, a second electrode plate having a second substrate tab, and a separator interposed between the first electrode plate and the second electrode plate, a first lead welded to the first substrate tab, a second lead welded to the second substrate tab, a heat shrinkable tube around a thickness portion of the electrode assembly, and a case accommodating the electrode assembly.
    Type: Application
    Filed: May 19, 2022
    Publication date: November 24, 2022
    Inventor: Kyu Gil CHOI
  • Publication number: 20220342817
    Abstract: A memory device comprises: a page buffer including a first and second latch, a control circuit configured to perform reading data of a word line and storing the data in the first latch, perform discharging the word line, perform moving the data of the first latch to the second latch, and perform outputting the data of the second latch to an exterior, and a control logic configured to control the control circuit such that an execution section of the discharge and moving for a first word line at least partially overlap each other when a second or third cache read command is inputted in a section in which the storage or discharge for the first word line is performed in response to a first cache read command for the first word line.
    Type: Application
    Filed: October 4, 2021
    Publication date: October 27, 2022
    Inventors: Gwan PARK, Jeong Gil CHOI
  • Publication number: 20220187979
    Abstract: A display device includes: a display panel comprising a display layer having a first display area, a second display area spaced apart from the first display area, and a third display area between the first and second display areas, and a touch sensor layer having a plurality of touch electrodes in the first, second, and third display areas on the display layer; a touch driver configured to drive the touch electrodes of the touch sensor layer; a digitizer layer below the display panel and overlapping with the first and second display areas, the digitizer layer comprising first electrode patterns and second electrode patterns; and an electromagnetic sensor driver configured to drive the first electrode patterns and the second electrode patterns of the digitizer layer to form a magnetic field in the digitizer layer.
    Type: Application
    Filed: November 18, 2021
    Publication date: June 16, 2022
    Inventors: Sung Ki JUNG, Eun Gil CHOI, Da Som GU, Yun Jae KIM, Jai Ku SHIN, Yong Chan JEON, Hyun Been HWANG
  • Publication number: 20220173364
    Abstract: An apparatus for manufacturing a display device includes a plurality of working tables, a plurality of arm modules, and a rotator. The plurality of working tables are spaced apart from each other in a first direction and are configured to support a target board. The plurality of arm modules are arranged in the first direction and spaced apart from the plurality of working tables in a second direction intersecting the first direction. The rotator is connected to the plurality of arm modules and configured to rotate about a rotation axis extending in the first direction.
    Type: Application
    Filed: September 27, 2021
    Publication date: June 2, 2022
    Inventors: Myung Gil CHOI, Jung Min LEE, Dong Woo KIM, Sang Moo LEE
  • Publication number: 20220131546
    Abstract: The present invention relates to a frequency modulation method based on a phase-locked loop capable of performing fast modulation independent of bandwidth. A frequency modulation system based on a phase-locked loop capable of performing fast modulation independent of bandwidth according to the present invention includes a loop filter including a proportional path and an integral path to determine a bandwidth of a phase-locked loop, a voltage-controlled oscillator configured to adjust a frequency according to an output of the loop filter, and a slope alternator configured to alternate an input current of the loop filter, wherein the slope alternator is located in the integral path of the loop filter to generate an offset current at a moment of change from a modulation rise to a modulation fall.
    Type: Application
    Filed: October 28, 2021
    Publication date: April 28, 2022
    Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Korea Advanced Institute Of Science And Technology
    Inventors: Han Gil CHOI, Sang Heung LEE, Seong Hwan CHO
  • Patent number: 11256099
    Abstract: A head-mounted display (HMD) apparatus includes a main body having a first surface facing a user's facial side, at least one connecting part connected to at least one surface of the main body, and a wearing part having a strap form, the wearing part being connected to the at least one connecting part and surrounding a portion of a head of the user such that the main body is held on the user's facial side. The main body includes a first support part extending from a portion of the first surface. The wearing part includes a second support part formed on an inner circumferential surface of a front portion of the wearing part facing a forehead of the user. The first support part and the second support part are supported on the user's forehead, thereby minimizing pressure exerted on zygomatic regions and relieving pressure and weight felt by the user.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: February 22, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung Hoon Park, Tae Hyung Kwon, Jung Soo Kim, Joong Kyung Park, Won Ho Shin, Young Gun Lee, Jin Choul Lee, Hyoung Gil Choi
  • Patent number: 11196042
    Abstract: The present invention relates to a method for preparing silicon-based active material particles for a secondary battery and silicon-based active material particles. The method for preparing silicon-based active material particles according to an embodiment of the present invention comprises the steps of: providing silicon powder; dispersing the silicon powder into an oxidant solvent to provide a mixture prior to grinding; fine-graining the silicon powder by applying mechanical compression and shear stress to the silicon powder in the mixture prior to grinding to produce silicon particles; producing a layer of chemical oxidation on the fine-grained silicon particles with the oxidant solvent while applying mechanical compression and shear stress to produce silicon-based active material particles; and drying the resulting product comprising the silicon-based active material particles to yield silicon-based active material particles.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: December 7, 2021
    Inventors: Young Tai Cho, Yong Gil Choi, Seung Chul Park, Seon Park, Hee Young Seo, Jee Hye Park, Yong Eui Lee, Chul Hwan Kim
  • Publication number: 20210354437
    Abstract: An apparatus configured to manufacture a display device and a method of manufacturing a display device include a stage configured to place a process target object on an upper surface thereof; a bending head in contact with the process target object to bend the process target object; a distance measurement sensor installed above the stage to be movable in a horizontal direction; and a cylinder configured to adjust a vertical position of the bending head.
    Type: Application
    Filed: May 10, 2021
    Publication date: November 18, 2021
    Inventors: Myung Gil CHOI, Jung Min LEE, Min Ha YUN, Sang Moo LEE
  • Patent number: 11171332
    Abstract: The present invention relates to a method for producing silicon-based active material particles for a secondary battery and silicon-based active material particles. A method for producing silicon-based active material particles for a secondary battery according to an embodiment of the present invention may comprise: a step of providing silicon powder; a step of providing a pre-pulverization mixture in which the silicon powder is dispersed in a solvent for dispersion comprising an antioxidant; a step of applying mechanical compression and shear stress to the silicon powder of the pre-pulverization mixture to refine the silicon powder, thereby forming silicon particles having an oxygen content controlled by the antioxidant; and a step of drying the resulting material comprising the silicon particles to obtain silicon-based active material particles.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: November 9, 2021
    Assignee: Nexeon Ltd.
    Inventors: Seung Chul Park, Eui Joon Song, Min Young Cheong, Jong Hun Lee, Young Tai Cho, Yong Gil Choi, Seon Park, Sung Hwan Kang, Hee Young Seo, Jee Hye Park, Tae Jin Yang
  • Publication number: 20210327312
    Abstract: A display device, an apparatus for manufacturing a display device and a method of manufacturing a display device are provided. A display device includes a flexible substrate including a main region, a bending region, which extends from an end of the main region, and a sub-region, which extends from an end of the bending region, the sub-region being reversed from the bending region to be attached on a rear surface of the main region, and an active element layer disposed in the main region of the flexible substrate, wherein a thickness of the flexible substrate is greater in the bending region than in the main region and the sub-region.
    Type: Application
    Filed: February 4, 2021
    Publication date: October 21, 2021
    Inventors: Myung Gil CHOI, Jung Min LEE, Dong Woo KIM, Sang Moo LEE
  • Patent number: 11151748
    Abstract: There is provided a method of decoding point cloud data, the method comprising: decoding a bitstream to obtain attribute information of point cloud data, acquiring attributes of the point cloud data using the decoded attribute information and reconstructing the point cloud data using the obtained attributes, wherein the attribute information contains bit depth information of each attribute of the point cloud data.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: October 19, 2021
    Assignees: Electronics and Telecommunications Research Institute, IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Eun Young Chang, Ji Hun Cha, Su Gil Choi, Euee Seon Jang, Min Ku Lee, You Sun Park
  • Patent number: 11136639
    Abstract: A bearing steel according to an embodiment of the present disclosure includes, as a chemical composition: 0.51 to 0.56 wt % of carbon (C); 0.30 to 0.55 wt % of silicon (Si); 0.60 to 0.90 wt % of manganese (Mn); 0.025 wt % or less (excluding 0 wt %) of phosphorus (P); 0.008 wt % or less (excluding 0 wt %) of sulfur (S); 0.01 to 0.20 wt % of chromium (Cr); 0.08 wt % or less (excluding 0 wt %) of molybdenum (Mo); 0.25 wt % or less (excluding 0 wt %) of nickel (Ni); 0.01 to 0.20 wt % of vanadium (V); 0.20 wt % or less (excluding 0 wt %) of copper (Cu); 0.003 wt % or less (excluding 0 wt %) of titanium (Ti); 0.01 to 0.05 wt % of aluminum (Al); 0.0015 wt % or less (excluding 0 wt %) of oxygen (O); 0.001 wt % or less (excluding 0 wt %) of calcium (Ca); and iron (Fe) and unavoidable impurities as a remainder.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: October 5, 2021
    Assignee: ILJIN GLOBAL CO., LTD
    Inventors: Oh Chul Kwon, Seon Ho Lee, Yoon Gil Choi, Chirl Soo Shin