Patents by Inventor Ji-hwan Choi

Ji-hwan 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: 20250114023
    Abstract: Provided is a method for producing a biosignal measurement electrode including: preparing a conductive polymer including a coil-type chain structure having a coil shape; providing a sugar alcohol and a water-soluble polymer to the conductive polymer to produce an electrode source including an expanded chain structure in which the coil-type chain structure is expanded and linearly arranged; forming a coating layer by providing the electrode source on a substrate; and producing the biosignal measurement electrode by annealing the coating layer.
    Type: Application
    Filed: October 1, 2024
    Publication date: April 10, 2025
    Applicant: Research & Business Foundation Sungkyunkwan University
    Inventors: Tae il KIM, Joo Hwan SHIN, Ji Yeong CHOI
  • Patent number: 12268053
    Abstract: A method of manufacturing a display device including forming a polysilicon layer on a substrate, patterning the polysilicon layer to form a polysilicon pattern including a first region and a second region each having a first thickness, and a third region having a second thickness less than the first thickness, forming a gate insulation layer on the polysilicon pattern, forming a gate electrode on the gate insulation layer, partially implanting ions into the polysilicon pattern to form an active layer, forming an insulation interlayer on the gate electrode, forming source and drain contact holes each passing through the insulation interlayer and the gate insulation layer and respectively overlapping the first region and the second region, forming source and drain electrodes respectively filling the source and drain contact holes, and forming a light emitting element electrically connected to the source electrode or the drain electrode.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: April 1, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong-Oh Seo, Ji-Hwan Kim, Byung-Soo So, Dong-Min Lee, Jong-Hoon Choi
  • Publication number: 20250107374
    Abstract: A display device includes a driving transistor; a transistor connected to the driving transistor; a first insulating layer; a first data conductive layer including a first connection pattern; a second insulating layer including a lower via hole; a second data conductive layer including a second connection pattern connected to the first connection pattern and a first conductive line; a third insulating layer including an intermediate via hole; a third data conductive layer including a third connection pattern connected to the second connection pattern, a second conductive line extending in a second direction, and a first data line which extends in the second direction; a fourth insulating layer including an upper via hole; and a light emitting element disposed including a first electrode, wherein at least two of the lower via hole, the intermediate via hole, and the upper via hole overlap each other in a third direction.
    Type: Application
    Filed: December 10, 2024
    Publication date: March 27, 2025
    Applicant: Samsung Display Co., Ltd.
    Inventors: Seung Hwan CHO, Beom Yeol PARK, Hyeon Woo SHIN, Ji Seon LEE, Won Suk CHOI, Yoon Sun CHOI
  • Publication number: 20250096365
    Abstract: A battery pack for a vehicle may include: a plurality of battery modules arranged on a plane; a lower case forming an accommodation space surrounding the lower and lateral portions of the plurality of battery modules; a pack cover coupled to the upper portion of the lower case so as to cover the upper portion of the accommodation space; a plurality of inner members provided in the accommodation space to separate the plurality of battery modules; and a heat blocker provided between the pack cover and the inner members so as to thermally isolate the battery modules separated by the inner members.
    Type: Application
    Filed: March 19, 2024
    Publication date: March 20, 2025
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Hyun Chang Kang, Jeong Hun Seo, Ji Woong Jung, Yoon Hyuk Kang, Jun Ho Suh, Yong Hwan Choi, Jun Young Kang
  • Publication number: 20250095399
    Abstract: Provided is a display device comprising a display panel, a metal plate on a bottom surface of the display panel, the metal plate including a first surface facing the bottom surface of the display panel and a second surface opposite to the one surface, and a fingerprint sensor overlappingly disposed on the second surface of the metal plate, wherein the metal plate includes an indentation groove recessed in a direction toward the first surface from the second surface of the metal plate, and the fingerprint sensor is disposed on the second surface of the metal plate on which the indentation groove is formed.
    Type: Application
    Filed: November 28, 2024
    Publication date: March 20, 2025
    Inventors: Kyung Min CHOI, Ji Hun RYU, Su Yul SEO, Kwang Hyun BAEK, Dong Hwan LEE, Won Ki HONG, Jeong An HONG
  • Patent number: 12252781
    Abstract: Disclosed is a method of forming an area-selective thin film, the method comprising supplying a nuclear growth retardant to the inside of the chamber in which the substrate is placed, so that the nuclear growth retardant is adsorbed to a non-growth region of the substrate; purging the interior of the chamber; supplying a precursor to the inside of the chamber, so that the precursor is adsorbed to a growth region of the substrate; purging the interior of the chamber; and supplying a reaction material to the inside of the chamber, so that the reaction material reacts with the adsorbed precursor to form the thin film.
    Type: Grant
    Filed: January 5, 2022
    Date of Patent: March 18, 2025
    Assignee: EGTM CO., LTD.
    Inventors: Jae Min Kim, Ha Na Kim, Woong Jin Choi, Ji Yeon Han, Ju Hwan Jeong, Hyeon Sik Cho
  • Publication number: 20250086376
    Abstract: A method is provided including: displaying a first content; detecting, by an electronic device, an output condition; and in response to the output condition, outputting, by the electronic device, a second content that that is associated with the first content. Furthermore, an electronic device is provided including: a memory configured to store content; and a processor configured to: display a first content; detect, by an electronic device, an output condition; and in response to the output condition, output a second content that that is associated with the first content.
    Type: Application
    Filed: November 23, 2024
    Publication date: March 13, 2025
    Inventors: Ji Hyun KIM, Jung Sic SUNG, Chul Hwan LEE, Jeong Hun KIM, Ji Hea PARK, Se Jun SONG, Yo Han LEE, Young Keun CHOI
  • Patent number: 12245575
    Abstract: An apparatus for controlling a flow rate of water based on an oxygen consumption of a farming target fish is disclosed. The apparatus can include a water temperature meter for measuring a water temperature of an aquaculture tank containing the farming target fish, an automatic feeder for supplying a fish feed to the aquaculture tank, a first oxygen concentration meter for measuring an oxygen concentration in water supplied to the aquaculture tank, a second oxygen concentration meter for measuring an oxygen concentration in water discharged from the aquaculture tank, an oxygen consumption calculator configured to calculate an oxygen consumption of the farming target fish, a water flow rate calculator configured to calculate a flow rate of water to be supplied to the aquaculture tank, and a water supply configured to supply the water to the aquaculture tank.
    Type: Grant
    Filed: November 28, 2023
    Date of Patent: March 11, 2025
    Assignee: PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: Jeong Hwan Park, Deok Gyu Kim, Ji Hoon Kim, Young Hun Lee, Jin Seo Choi
  • Publication number: 20250070423
    Abstract: A secondary battery includes positive and negative electrode terminals spaced apart on a first face of a hexahedral-shaped battery case, a nonlinear terminal body contacting the first face of the battery case and a side of the battery case extending from the first face of the battery case while enclosing one of the positive or negative electrode terminals, a terminal structure including an extension terminal electrically connected to the one of the positive or negative electrode terminals, and the extension terminal exposed on a side of the terminal structure, wherein the side of the terminal structure is seated in a recessed surface formed in the side of the battery case.
    Type: Application
    Filed: October 25, 2023
    Publication date: February 27, 2025
    Applicant: LG Energy Solution, Ltd.
    Inventors: Cheon Hee Bok, Joo Hwan Sung, Jun Min Kim, Dan Bi Jeon, Kyoung Min Choi, Ji Su Hong
  • Publication number: 20250062276
    Abstract: The present invention relates to a method for dipping an adhesive material, and the method for dipping an adhesive material includes dipping an adhesive material onto a first dipping stamp, transferring the adhesive material, which is dipped onto the first dipping stamp, to a target substrate, and transferring a device to the target substrate, to which the adhesive material is transferred.
    Type: Application
    Filed: August 16, 2024
    Publication date: February 20, 2025
    Inventors: Jung Ho Shin, Chan Mi Lee, Ji Ho Joo, Gwang Mun Choi, Yong Sung Eom, Kwang Seong Choi, Seok Hwan Moon, Jin Hyuk Oh, Ho Gyeong Yun, Ki Seok Jang
  • Patent number: 12224427
    Abstract: A secondary battery comprising a positive electrode current collector, a first positive electrode mixture layer disposed on the positive electrode current collector and including a first positive electrode active material and a binder, and a second positive electrode mixture layer disposed on the first positive electrode mixture layer and including a second positive electrode active material and a binder. A nickel content of the second positive electrode active material is 80% by weight or less of a nickel content of the first positive electrode active material. By providing a secondary battery including a positive electrode of a multi-layer structure that includes positive electrode active materials having different contents of nickel, a secondary battery capable of improving high-temperature characteristics while maintaining energy density may be provided.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: February 11, 2025
    Assignee: SK ON CO., LTD.
    Inventors: Jae Yun Min, Jeong A Kim, Sung Jun Park, Da Bin Chung, Jae Kyu Jin, Ji Hwan Choi
  • Publication number: 20250037622
    Abstract: A display device includes a driving frequency calculator configured to divide output image data into central, intermediate, and peripheral images respectively corresponding to central, intermediate, and peripheral visual field regions, calculate spatial frequencies of the central image, the intermediate image, and the peripheral image, calculate critical flicker frequencies of the central visual field region, the intermediate visual field region, and the peripheral visual field region based on the spatial frequencies and based on viewing angles of the central visual field region, the intermediate visual field region, and the peripheral visual field region, and determine driving frequencies of the central visual field region, the intermediate visual field region, and the peripheral visual field region based on the critical flicker frequencies, and a display panel configured to display an image based on the output image data and based on the driving frequencies.
    Type: Application
    Filed: April 11, 2024
    Publication date: January 30, 2025
    Inventors: HYUNGSUK HWANG, YOURA KIM, HYOSUN KIM, Cheong Il KIM, Jeong Hyeon PARK, Sang Chul CHONG, Ji Eun CHO, Jeung Hwan CHOI
  • Patent number: 12202997
    Abstract: An encapsulating composition and an organic electronic device comprising the same, and the encapsulating composition which is capable of effectively blocking moisture or oxygen penetrating into the organic electronic device from the outside to secure the lifetime of the organic electronic device, implementing a top-emitting organic electronic device, being applied in an inkjet method, and providing a thin display.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: January 21, 2025
    Assignee: LG Chem, Ltd.
    Inventors: Ji Won Kwak, Kook Hyun Choi, Mi Lim Yu, Dong Hwan Kim, Hae Jong Jung
  • Publication number: 20250018861
    Abstract: Disclosed herein is a method of controlling, by a sound control device for audio devices, sounds of an audio device worn by an occupant according to some embodiments of the present disclosure. The method includes: obtaining information on the occupant and a hazard from sensors provided in a vehicle; and outputting a warning sound through the audio device worn by the occupant to indicate a hazardous situation. A direction in which the audio device outputs the warning sound may be adaptively determined based on the information on the occupant and the hazard.
    Type: Application
    Filed: April 2, 2024
    Publication date: January 16, 2025
    Applicant: HYUNDAI MOBIS CO., LTD.
    Inventors: Tae Hun Kim, Seung Hwan Lee, Ji Soo Shin, Myung Bin Choi
  • Publication number: 20250024698
    Abstract: An object of the present invention is to provide a material for organic EL elements, the material being excellent in hole injecting/transporting performance, electron-blocking capability, stability in the form of a thin film, and durability. Another object of the present invention is to provide an organic EL element having high efficiency, a low driving voltage, and a long lifespan, by combining the aforementioned material with various materials for organic EL elements, the materials being excellent in hole/electron injecting/transporting performance, electron-blocking capability, stability in the form of a thin film, and durability, such that the properties of the individual materials can be effectively exhibited.
    Type: Application
    Filed: August 1, 2022
    Publication date: January 16, 2025
    Applicants: HODOGAYA CHEMICAL CO., LTD., SFC CO., LTD.
    Inventors: Junichi IZUMIDA, Sang-Won KO, Bong-Hyang LEE, Jung-Ho RYU, Jin-ho LEE, Kouki KASE, Shuichi HAYASHI, Se-Jin LEE, Tae-Jung YU, Young-Tae CHOI, Sung-Hoon JOO, Byung-Sun YANG, Ji-Hwan KIM, Bong-Ki SHIN
  • Publication number: 20250019488
    Abstract: In embodiment, a binder composition includes a multifunctional compound containing three or more functional groups, a first bifunctional epoxy resin, and a second bifunctional epoxy resin. The second bifunctional epoxy resin can have a weight average molecular weight greater than a weight average molecular weight of the first bifunctional epoxy resin, and a mass ratio of the first bifunctional epoxy resin and the second bifunctional epoxy resin is in a range from 0.45:1 to 7.0:1. In an embodiment, an epoxy-based cured product includes such binder composition. And in an embodiment, a light emitting layer includes such epoxy-based cured product.
    Type: Application
    Filed: November 7, 2023
    Publication date: January 16, 2025
    Inventors: Tae Young Choi, Keum Hwan Park, Young Min Kim, Young Eun Kim, Ji Young Kim
  • Publication number: 20240383358
    Abstract: An unmanned charging device and method for a smart logistics vehicle are disclosed. The unmanned charging device includes a charging body configured to enable a mobile robot to dock therewith and having an inner space, and a charging terminal unit inserted into the inner space of the charging body and having a front support at a front side thereof, the charging terminal unit being configured to enable charging of the mobile robot. When the mobile robot approaches the charging body in response to reception of a charging request, a sensing unit of the mobile robot is supported by the front support, thereby causing the mobile robot to be adjusted in position. Docking of the mobile robot with the charging terminal unit is performed in a position-adjusted state of the mobile robot.
    Type: Application
    Filed: November 7, 2023
    Publication date: November 21, 2024
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, HYUNDAI WIA CORPORATION
    Inventors: Seoung Yeop Lee, Joo Young Chun, Ha Na Lee, Pan Keun Baek, Jae Geon Lee, Ji Hwan Choi, Jung Hyeok Lim, Jong Woo Kim, Myeong Su Kim
  • Publication number: 20240006589
    Abstract: A secondary battery comprising a positive electrode current collector, a first positive electrode mixture layer disposed on the positive electrode current collector and including a first positive electrode active material and a binder, and a second positive electrode mixture layer disposed on the first positive electrode mixture layer and including a second positive electrode active material and a binder. A nickel content of the second positive electrode active material is 80% by weight or less of a nickel content of the first positive electrode active material. By providing a secondary battery including a positive electrode of a multi-layer structure that includes positive electrode active materials having different contents of nickel, a secondary battery capable of improving high-temperature characteristics while maintaining energy density may be provided.
    Type: Application
    Filed: September 18, 2023
    Publication date: January 4, 2024
    Inventors: Jae Yun MIN, Jeong A. KIM, Sung Jun PARK, Da Bin CHUNG, Jae Kyu JIN, Ji Hwan CHOI
  • Publication number: 20230183432
    Abstract: The present disclosure relates to a polymer composite. According to the present disclosure, there is provided a polymer composite capable of exhibiting improved light resistance while being environmentally friendly by containing microcellulose fibers fibrillated by the growth of inorganic particles as a reinforcing material.
    Type: Application
    Filed: March 7, 2022
    Publication date: June 15, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Yulliana Kim, In Young Kim, Kwang Seoung Jeon, Minsung Park, Ji Hwan Choi
  • Patent number: 11579765
    Abstract: Provided is an olfactory data sharing terminal including a receiver configured to receive olfactory data obtained by sensing an odor of an object through an olfactory sensor; a preference determiner configured to determine whether a user prefers the received olfactory data, based on a user olfactory function fuser(x); and a display displaying a user preference for the received olfactory data.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: February 14, 2023
    Assignee: DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jae Eun Jang, Hyuk Jun Kwon, Che Il Moon, Kyung In Jang, Ji Hwan Choi, Han Kyoung Choe, Su Jin Heo