Patents by Inventor Chang Hyeon

Chang Hyeon 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: 20240196666
    Abstract: Disclosed are a display panel, which is capable of reducing mura at low grayscale, and a method of manufacturing the same. The thickness of a gate insulating layer of a driving thin-film transistor is increased, and the mobility of the driving thin-film transistor is reduced to reduce the K-factor of the driving thin-film transistor. The display panel includes a plurality of sub-pixels, each having a driving thin-film transistor, a switching thin-film transistor, and a storage capacitor on a substrate. The driving thin-film transistor includes a semiconductor layer comprising a source region and a drain region; a gate electrode overlapping the semiconductor layer; a source electrode and a drain electrode electrically connected to the source region and the drain region; and a gate insulating layer located between the semiconductor layer and the gate electrode. The semiconductor layer is a dehydrogenated semiconductor layer.
    Type: Application
    Filed: August 21, 2023
    Publication date: June 13, 2024
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Byung Yong AHN, Won So SON, Chang Hyeon CHO
  • Patent number: 12009384
    Abstract: A light emitting diode (LED) stack for a display including a substrate, a first LED stack disposed on the substrate, a second LED stack disposed on the first LED stack, a third LED stack disposed on the second LED stack, a first color filter interposed between the first LED stack and the second LED stack, and a second color filter interposed between the second LED stack and the third LED stack, in which the second LED stack and the third LED stack are configured to transmit light generated from the first LED stack to the outside, and the third LED stack is configured to transmit light generated from the second LED stack to the outside.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: June 11, 2024
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Jong Hyeon Chae, Chung Hoon Lee, Seong Gyu Jang, Chang Yeon Kim, Ho Joon Lee
  • Publication number: 20240186555
    Abstract: An embodiment fuel cell including a high temperature polymer electrolyte membrane includes an electrolyte membrane including a phosphoric acid-doped polymer of intrinsic microporosity, a cathode disposed on a first surface of the electrolyte membrane, and an anode disposed on a second surface of the electrolyte membrane, the second surface opposite the first surface.
    Type: Application
    Filed: April 12, 2023
    Publication date: June 6, 2024
    Inventors: Da Hee Kwak, Won Jae Choi, Songi Oh, Hyoun Myung Park, Sung Hee Shin, Jee Youn Hwang, Ah Hyeon Park, Kyung Su Kim, Ji Yun Kim, Seong Min Cho, Chang Sik Song
  • Publication number: 20240174890
    Abstract: A CMP slurry composition for polishing tungsten and a method of polishing tungsten using the same, the composition includes a polar solvent or a nonpolar solvent; an abrasive agent; and a compound represented by Formula 3 or a complex thereof:
    Type: Application
    Filed: October 24, 2023
    Publication date: May 30, 2024
    Inventors: Keun Sam JANG, Won Jung KIM, Tae Won PARK, Ji Ho LEE, Eui Rang LEE, Jin Gyo KIM, Dong Hyeon LEE, Chang Suk LEE
  • Publication number: 20240177775
    Abstract: The present technology relates to an electronic device. A memory device including a plurality of memory cells connected to a plurality of word lines arranged between a plurality of source select lines and a plurality of drain select lines, a peripheral circuit configured to perform a program operation of programming data in selected memory cells among the plurality of memory cells, and a program operation controller configured to control the peripheral circuit to apply a voltage, for turning on or off source select transistors connected to the plurality of source select lines, to the plurality of source select lines, while applying a pass voltage to the plurality of word lines after applying a program voltage to selected word lines connected to the selected memory cells.
    Type: Application
    Filed: April 18, 2023
    Publication date: May 30, 2024
    Applicant: SK hynix Inc.
    Inventors: Jae Hyeon SHIN, Chang Han SON, In Gon YANG, Sung Hyun HWANG
  • Publication number: 20240160603
    Abstract: Provided is a data input/output (I/O) method using a storage node-based key-value store in a storage disaggregation environment. The data I/O method using the storage node-based key-value store includes receiving a command converted from a key-value write request of an application from a calculation node according to a communication protocol used in the storage node, converting the command into an I/O request using a key included in the command, the I/O request including a logical block address and a value corresponding to the key, and storing the value in a storage device of the storage node using the logical block address of the I/O request.
    Type: Application
    Filed: September 19, 2022
    Publication date: May 16, 2024
    Inventors: Sung-Soon PARK, Kyeung Pyo KIM, Young Jae KIM, Yeo Hyeon PARK, Chang Gyu LEE
  • Patent number: 11978759
    Abstract: A light emitting diode (LED) stack for a display including a substrate, a first LED stack disposed on the substrate, a second LED stack disposed on the first LED stack, a third LED stack disposed on the second LED stack, a first color filter interposed between the first LED stack and the second LED stack, and a second color filter interposed between the second LED stack and the third LED stack, in which the second LED stack and the third LED stack are configured to transmit light generated from the first LED stack to the outside, and the third LED stack is configured to transmit light generated from the second LED stack to the outside.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: May 7, 2024
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Jong Hyeon Chae, Chung Hoon Lee, Seong Gyu Jang, Chang Yeon Kim, Ho Joon Lee
  • Patent number: 11961223
    Abstract: An apparatus for predicting performance of a wheel in a vehicle: includes a learning device that generates a latent space for a plurality of two-dimensional (2D) wheel images based on a convolutional autoencoder (CAE), extracts a predetermined number of the plurality of 2D wheel images from the latent space, and learns a dataset having the plurality of 2D wheel images and performance values corresponding to the plurality of 2D wheel images; and a controller that predicts performance for the plurality of 2D wheel images based on a performance prediction model obtained by the learning device.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: April 16, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, SOOKMYUNG WOMEN'S UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Jong Ho Park, Chang Gon Kim, Chul Woo Jung, Sang Min Lee, Min Kyoo Kang, Ji Un Lee, Kwang Hyeon Hwang, Nam Woo Kang, So Young Yoo, Seong Sin Kim, Sung Hee Lee
  • Publication number: 20240113852
    Abstract: A wireless communication system, according to one embodiment of the present invention, comprises: a first communication module; and at least one second communication module wirelessly connected to the first communication module, wherein the first communication module is wirelessly connected to the second communication module to which driving power is applied from the same power source as that of the first communication module.
    Type: Application
    Filed: February 10, 2022
    Publication date: April 4, 2024
    Inventors: Chang Hoon YOO, Sung Jun BAE, Jeong Hyeon SON, Seung Taek WOO, So Yeon HAM
  • Patent number: 11935912
    Abstract: A display apparatus including a thin film transistor (TFT) substrate; a first LED sub-unit, a second LED sub-unit, and a third LED sub-unit; first, second, third, and fourth electrode pads disposed between the TFT substrate and the first LED sub-unit; and connectors connecting the first, second, and third LED sub-units to a respective one of the electrode pads, in which the first, second, and third sub-units are configured to be independently driven; light generated from the first LED sub-unit is emitted to the outside of the display apparatus by passing through the second and third LED sub-units; light generated from the second LED sub-unit is emitted to the outside of the display apparatus by passing through the third LED sub-unit; and at least one of the connectors includes a first portion electrically connecting a first surface of the first LED sub-unit to the second electrode pad.
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: March 19, 2024
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Seong Gyu Jang, Ho Joon Lee, Chang Yeon Kim, Chung Hoon Lee
  • Patent number: 11839839
    Abstract: A filtration apparatus is provided. The filtration apparatus includes a housing and a plurality of filtering sheets. The housing is enclosed by a first end cap and a second end cap. The first end cap includes a liquid inlet, and the second end cap includes a liquid outlet. The plurality of filtering sheets is disposed on an internal sidewall of the housing. A portion of the filtering sheets interlaces with another portion of the filtering sheets to form a winding flow path in the housing.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: December 12, 2023
    Assignee: XIA TAI XIN SEMICONDUCTOR (QING DAO) LTD.
    Inventors: Sangyong Choi, Chang-Hyeon Nam, Injoon Yeo
  • Publication number: 20230378567
    Abstract: The present invention relates to a battery pack having a refrigerant circulation channel, and more particularly to a battery pack having a refrigerant circulation channel provided in a pack case, the battery pack including at least one battery module; a pack case configured to receive the battery module therein; and a cooling unit located between an inside upper surface of the pack case and the battery module, the cooling unit being configured to discharge heat generated from the battery module, wherein the pack case is provided with a refrigerant circulation channel configured to supply and collect a refrigerant to and from the cooling unit.
    Type: Application
    Filed: May 3, 2021
    Publication date: November 23, 2023
    Applicant: LG Energy Solution, Ltd.
    Inventors: Soon Chang Hong, Hyong Seok Yoo, Chang Hyeon Yang, Hyoung Suk Lee
  • Publication number: 20230355702
    Abstract: The present invention relates to a composition for preventing sleep disorders or insomnia, containing an enzyme-treated Ashwagandha extract as an active ingredient, and specifically, since it was confirmed that in an animal model and a sleep disorder animal model, which were administered an enzyme-treated Ashwagandha extract, sleep latency and awake time during sleep were decreased, sleep time, non-rapid eye movement (NREM) sleep time and ?-waves were increased, and as a result, sleep activity was improved, the enzyme-treated Ashwagandha extract can be used as an active ingredient of a composition for preventing or treating sleep disorders or insomnia.
    Type: Application
    Filed: June 2, 2023
    Publication date: November 9, 2023
    Applicant: N biotech Co., Ltd.
    Inventors: Deok Su KIM, Su Young BAE, Chang Hyeon PARK, Ye Jin AHN, Chun Woong PARK
  • Publication number: 20230325423
    Abstract: The invention relates to a method and a system for improving performance of text summarization and has an object of improving performance of a technique for generating a summary from a given paragraph. According to the invention to achieve the object, a method for improving performance of text summarization includes: an a step of generating an embedding vector by vectorizing a natural language-based context; a b step of generating a graph using the embedding vector and calculating a first likelihood of each of at least one node included in the graph; a c step of generating a second likelihood by assigning a weight to the first likelihood according to a result of comparing at least one node included in the graph with the context; and a d step of calculating a third likelihood for all candidate paths present in the graph based on the second likelihood, selecting a path having a highest third likelihood, and generating a summary based on the path.
    Type: Application
    Filed: June 14, 2023
    Publication date: October 12, 2023
    Applicant: 42Maru Inc.
    Inventors: Dong Hwan KIM, Han Su Kim, Woo Tae Jeong, Seung Hyeon Lee, Chang Hyeon Lim
  • Publication number: 20230318627
    Abstract: A soft-decision decoding method used in a digital communication system may comprise: using a hard-decision Bose-Chadhuri-Hocquenghem (BCH) decoder as a stopping rule of ordered statistic decoding (OSD) before performing the OSD on an input signal; and performing the OSD when a highest order of an error position equation generated in the BCH decoder is not equal to a number of solutions found in the BCH decoder.
    Type: Application
    Filed: April 4, 2023
    Publication date: October 5, 2023
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Seok Ki KIM, Gi Yoon PARK, Ok Sun PARK, Young Joo LEE, Chang Hyeon KIM
  • Publication number: 20230307782
    Abstract: A battery pack includes a battery module including a plurality of battery cells; a pack housing configured to accommodate the battery module therein, and including a first case configured to cover one side of the battery module and having an open other side, and a second case configured such that it covers the other side of the battery module, one side thereof is open, and one side end thereof is coupled to the other side end of the first case; and a sealing member configured to be melted at a predetermined temperature or higher to flow into a gap between one end of the first case and the other end of the second case.
    Type: Application
    Filed: January 6, 2022
    Publication date: September 28, 2023
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Chang-Hyeon YANG, Hae-Jin KIM, Hyong-Seok YOO
  • Publication number: 20230299406
    Abstract: The battery pack includes at least one battery module having a plurality of battery cells; a pack tray having a module mounting portion configured to mount one or more of the battery modules and extending in a horizontal direction, and a side cover portion extending upwardly from an outer periphery of the module mounting portion to cover a side of the battery module; and at least one side plate coupled to any one or more of the module mounting portion and the side cover portion, provided on one or both sides of the battery module, having a plurality of through-holes, and configured to block at least one surface of the battery module when the battery module is expanded.
    Type: Application
    Filed: January 27, 2022
    Publication date: September 21, 2023
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Chang-Hyeon YANG, Hae-Jin KIM, Byung-Do JANG
  • Patent number: 11724236
    Abstract: A fluid preparation system includes a tank, a chemical supply line, a mixer, and a deionized (DI) water supply line. The tank contains a first chemical solution. The chemical supply line is coupled to the tank and configured to supply the first chemical solution. The mixer is coupled to the tank. The DI water supply line is coupled to the mixer and configured to supply DI water. The first chemicals solution and the DI water are mixed at the mixer to generate a second chemical solution.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: August 15, 2023
    Assignee: XIA TAI XIN SEMICONDUCTOR (QING DAO) LTD.
    Inventors: Chang-Hyeon Nam, Hong-Sik Shin, Injoon Yeo
  • Patent number: 11727041
    Abstract: The invention relates to a method and a system for improving performance of text summarization and has an object of improving performance of a technique for generating a summary from a given paragraph. According to the invention to achieve the object, a method for improving performance of text summarization includes: an a step of generating an embedding vector by vectorizing a natural language-based context; a b step of generating a graph by using the embedding vector; a c step of assigning a weight depending on whether or not a keyword corresponding to at least one node included in the graph is present in the context; and a d step of selecting a path having a highest likelihood in the graph and generating a summary based on the path.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: August 15, 2023
    Inventors: Dong Hwan Kim, Han Su Kim, Woo Tae Jeong, Seung Hyeon Lee, Chang Hyeon Lim
  • Publication number: 20230218702
    Abstract: The present invention relates to a composition for preventing sleep disorders or insomnia, containing an enzyme-treated Ashwagandha extract as an active ingredient, and specifically, since it was confirmed that in an animal model and a sleep disorder animal model, which were administered an enzyme-treated Ashwagandha extract, sleep latency and awake time during sleep were decreased, sleep time, non-rapid eye movement (NREM) sleep time and ?-waves were increased, and as a result, sleep activity was improved, the enzyme-treated Ashwagandha extract can be used as an active ingredient of a composition for preventing or treating sleep disorders or insomnia.
    Type: Application
    Filed: November 28, 2022
    Publication date: July 13, 2023
    Applicant: N biotech Co., Ltd.
    Inventors: Deok Su KIM, Su Young BAE, Chang Hyeon PARK, Ye Jin AHN, Chun Woong PARK