Patents by Inventor Hyun-Chul Kim

Hyun-Chul Kim 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: 20250145743
    Abstract: A method of preparing a vinyl chloride polymer is provided. The method includes: preparing a mixture by adding an alcohol to a vinyl chloride polymer slurry (S1); separating a waste liquid from the mixture to obtain a vinyl chloride polymer (S2); and adding at least a portion of the separated waste liquid to the mixture (S3); wherein a content of the at least a portion of the separated waste liquid added in Step S3 is in the range of 33.0 to 35.0 parts by weight with respect to 100 parts by weight of the mixture.
    Type: Application
    Filed: May 31, 2023
    Publication date: May 8, 2025
    Inventors: Se Woong LEE, Hyun Kyou HA, Kun Ji KIM, Heung Kwon BAE, Hyun Chul KIM, Yun Seok CHOI
  • Patent number: 12295219
    Abstract: An organic light-emitting display device includes a base substrate, a pixel array, a first power voltage wiring and a second power voltage wiring. The base substrate includes a pixel area and a peripheral area. The pixel array is disposed in the pixel area. The first power voltage wiring is disposed in the peripheral area and includes a first lower power voltage line and a first upper power voltage line. The first upper power voltage line is disposed on and contacts the first lower power voltage line. The second power voltage wiring is disposed in the peripheral area and includes a second lower power voltage line and a second upper power voltage line. The second upper power voltage line is disposed on and contacts the second lower power voltage line. The first upper power voltage line overlaps the second lower power voltage line in a plan view.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: May 6, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yoonsun Choi, Seong Ryong Lee, Hyun Chul Kim, Seongjun Lee, Eunae Jung
  • Patent number: 12286811
    Abstract: There is disclosed a door handle having a vein authentication function including a housing provided in a door; a sensor provided in the housing for sensing a user's hand touching the housing or located in a preset region; a controller receiving a measured value from the sensor part; and an authentication part operating based on a control signal of the controller, photographing the user's hand and transmitting the photograph of the user's hand to the controller, wherein the authentication part has a photographing angle that is variable based on a position of the user's hand.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: April 29, 2025
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyun Chul Kim, Junghan Ryu, Jung Hoon Lee
  • Publication number: 20250130727
    Abstract: An embodiment of the disclosed technology reduces direct data transmission and reception between a plurality of host devices and enables data sharing by a data storage device, through management of allocation information and access mode information of memory regions included in the data storage device used by the plurality of host devices, thereby improving data processing performance by the plurality of host devices and the use efficiency of the data storage device.
    Type: Application
    Filed: March 8, 2024
    Publication date: April 24, 2025
    Inventors: Jung Min CHOI, Hyun Chul KIM, Byung Il KOH, Sun Woong KIM
  • Patent number: 12277908
    Abstract: A display apparatus includes where one pixel line including a plurality of pixels are provided in plurality, a gate driver configured to apply a gate signal to the one pixel line, and a source driver configured to apply a data signal to the one pixel line. The source driver includes amplifier circuits, output switches, a source output control circuit, and an offset control circuit. The source output control circuit applies sequentially delayed source output enable signals to the output switches to delay an output period of the data signal by units of source output channels, based on a degree of delay of the gate signal. The offset control circuit applies an offset control signal generated based on the sequentially delayed source output enable signals to the plurality of amplifier circuits to change an offset of each of the plurality of amplifier circuits in a masking period of the data signal.
    Type: Grant
    Filed: October 12, 2023
    Date of Patent: April 15, 2025
    Assignee: LG Display Co., Ltd.
    Inventor: Hyun Chul Kim
  • Publication number: 20250029466
    Abstract: The present invention provides a home care system. More specifically, the present invention relates to an image-based remote home care system which monitors, in real time, occurrence of various unexpected events, such as an emergency, on the basis of an image of a person to be observed captured using an IP-CAM at a remote location. According to an embodiment of the present invention, one or more IP-CAMs are installed or a smart terminal is prepared in a habitation of a vulnerable person, such as a senior citizen living alone, current images of the person to be protected are captured and collected in real time, and occurrence of an emergency is determined through analysis of the collected images and is reported to an associated emergency center, so that a person to be protected can be protected.
    Type: Application
    Filed: April 12, 2022
    Publication date: January 23, 2025
    Inventors: Hyun Chul KIM, Seung Chul KIM
  • Publication number: 20250021372
    Abstract: In an embodiment of the disclosed technology, when a virtual machine is migrated between a plurality of host devices which are allocated with and use memory regions of a data storage device, data related to the virtual machine may be migrated without using a bandwidth between the data storage device and the host devices or by minimizing use of a bandwidth.
    Type: Application
    Filed: November 23, 2023
    Publication date: January 16, 2025
    Inventors: Jung Min CHOI, Hyun Chul KIM
  • Publication number: 20250021264
    Abstract: In an embodiment of the disclosed technology, a defective memory region is detected on the basis of operation information of a memory region included in a memory system and allocated to a host device, a warning signal is transmitted to a host device to which the defective memory region is allocated, and the defective memory region is excluded from a pool of allocatable memory regions to reduce or prevent data loss of a host device using memory regions of the memory system that may occur due to the defective memory region.
    Type: Application
    Filed: December 7, 2023
    Publication date: January 16, 2025
    Inventors: Jung Min CHOI, Hyun Chul KIM
  • Publication number: 20240429389
    Abstract: A negative electrode including a negative electrode current collector, and a negative electrode active material layer on at least one surface of the negative electrode current collector is disclosed. The negative electrode active material layer includes a negative electrode active material, which includes a first negative electrode active material and a second negative electrode active material. The first negative electrode active material is coated artificial graphite particles including primary artificial graphite particles and an amorphous carbon coating layer on a surface of the primary artificial graphite particles. The second negative electrode active material is uncoated artificial graphite particles in the form of secondary particles in which two or more primary artificial graphite particles are assembled. A ratio of an average particle diameter (D50) of the second negative electrode active material to an average particle diameter (D50) of the first negative electrode active material ranges from 1.
    Type: Application
    Filed: December 7, 2022
    Publication date: December 26, 2024
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Hyun Chul KIM, Sang Wook WOO
  • Publication number: 20240379957
    Abstract: A negative electrode active material including secondary particles wherein at least two primary particles are aggregated, wherein the primary particles include primary natural graphite particles and an amorphous carbon coating layer on at least a portion of a surface of the primary natural graphite particles. The negative electrode active material has a pore volume of 0.06 mL/g to 0.15 mL/g as measured by a Hg porosimeter.
    Type: Application
    Filed: September 14, 2022
    Publication date: November 14, 2024
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Hyun Chul Kim, Sang Wook WOO
  • Patent number: 12039906
    Abstract: A display device includes a timing controller, a data driver controlled by the timing controller, and a display panel configured to display an image by the data driver. When a data signal is applied in an abnormal state, the data driver generates a voltage for display of black by itself, and supplies the voltage to the display panel.
    Type: Grant
    Filed: October 27, 2022
    Date of Patent: July 16, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Hyun Chul Kim
  • Publication number: 20240219961
    Abstract: A display apparatus includes a display panel having a display region, a non-display region, and a bending region. The display apparatus further includes a polarizing plate attached to the display panel, and a micro protective layer formed on the bending region. The micro protective layer is in contact with a side surface of the polarizing plate.
    Type: Application
    Filed: November 17, 2023
    Publication date: July 4, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: Dae-Jin LEE, Hyun-Chul KIM
  • Publication number: 20240194143
    Abstract: A display apparatus includes where one pixel line including a plurality of pixels are provided in plurality, a gate driver configured to apply a gate signal to the one pixel line, and a source driver configured to apply a data signal to the one pixel line. The source driver includes amplifier circuits, output switches, a source output control circuit, and an offset control circuit. The source output control circuit applies sequentially delayed source output enable signals to the output switches to delay an output period of the data signal by units of source output channels, based on a degree of delay of the gate signal. The offset control circuit applies an offset control signal generated based on the sequentially delayed source output enable signals to the plurality of amplifier circuits to change an offset of each of the plurality of amplifier circuits in a masking period of the data signal.
    Type: Application
    Filed: October 12, 2023
    Publication date: June 13, 2024
    Inventor: Hyun Chul Kim
  • Patent number: 11991878
    Abstract: A semiconductor device include a nonvolatile memory device, including a first well region formed in a substrate, a tunneling gate insulator formed on the first well region, a floating gate formed on the tunneling gate insulator, a control gate insulator formed on the substrate, a control gate formed on the control gate insulator, and a first source region and a first drain region formed on opposite sides of the control gate, respectively, and a first logic device, including a first logic well region formed in the substrate, a first logic gate insulator formed on the first logic well region, a first logic gate formed on the first logic gate insulator, wherein the first logic gate comprises substantially a same material as a material of the control gate of the nonvolatile memory device.
    Type: Grant
    Filed: April 12, 2023
    Date of Patent: May 21, 2024
    Assignee: SK keyfoundry Inc.
    Inventors: Kwang Il Kim, Yang Beom Kang, Jung Hwan Lee, Min Kuck Cho, Hyun Chul Kim
  • Publication number: 20240109794
    Abstract: An ultraviolet light-based disinfection device and method are proposed. The ultraviolet disinfection device, according to one embodiment, may disinfect a fluid on the basis of ultraviolet light, without injecting a drug or using a harmful material such as mercury.
    Type: Application
    Filed: January 27, 2022
    Publication date: April 4, 2024
    Inventors: Hyun Chul KIM, Ho Don RYU, Seok Jong BYUN
  • Publication number: 20240051263
    Abstract: The present disclosure relates to a window film and a method of manufacturing the same. More particularly, the present disclosure relates to a window film and a method of manufacturing the same that prevents a mirror phenomenon from occurring and prevents thermal energy absorbed by the film from being re-emitted into the interior of the film and from increasing the temperature of the room.
    Type: Application
    Filed: January 12, 2022
    Publication date: February 15, 2024
    Inventors: Hyun Chul Kim, Hyun Il Shin, Jong Hyeok Lee, Jin Ho Kim, Jae Heon Jeong
  • Publication number: 20240034632
    Abstract: A method for producing a negative electrode active material, including mixing a carbonaceous core and a first pitch to form a first mixture and performing a first heat treatment of the first mixture to form composite particles, and mixing the composite particles and a second pitch to form a second mixture and performing a second heat treatment of the second mixture.
    Type: Application
    Filed: October 23, 2020
    Publication date: February 1, 2024
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Chang Ju LEE, Sang Wook WOO, Hyun Chul KIM
  • Publication number: 20240001408
    Abstract: An apparatus for manufacturing a semiconductor device, including: a wet treatment chamber; a nozzle provided in the wet treatment chamber and configured to spray a treatment material onto a substrate; a supercritical fluid treatment chamber configured to supply a supercritical fluid onto the substrate to treat the substrate; a transfer device comprising an arm configured to transfer the substrate between the wet treatment chamber and the supercritical fluid treatment chamber; and a controller configured to control the wet treatment chamber to spray the treatment material onto the arm
    Type: Application
    Filed: July 3, 2023
    Publication date: January 4, 2024
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Dae-Woong CHOI, Yong Myung JUN, Hyun-Chul KIM, Chang Seok SEO, Chan JEON, Woo Seok CHOE, In Sung HUH
  • Patent number: 11837717
    Abstract: The present specification relates to a negative electrode active material which includes a silicon-based composite represented by SiOa (0?a<1), and a carbon coating layer distributed on a surface of the silicon-based composite, and which has a bimodal pore structure including nanopores and mesopores. In a lithium secondary battery including the negative electrode active material, an oxygen content in the silicon-based composite can be controlled to improve initial efficiency and capacity characteristics, and a specific surface area can also be controlled, and thus a side reaction with electrolyte can be reduced.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: December 5, 2023
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Hyun Chul Kim, Yong Ju Lee, Eun Kyung Kim
  • Publication number: 20230388766
    Abstract: Provided is a disaster warning system with active geofencing, which includes: an information collection unit for collecting real-time disaster information, real-time weather information and document information on existing disasters; a geofencing analysis unit for complexly analyzing the information to classify the scope of an area that causes a disaster damage after the disaster into caution and danger zones on a map based on geofencing, disaster situations and time series; an information generation unit for generating content for indicating the caution and danger zones on the map; and an information notification unit that provides the received content to a user mobile phone in a section set by a disaster damage prediction range, to allow the user mobile phone to indicate the caution and danger zones on the map.
    Type: Application
    Filed: August 3, 2022
    Publication date: November 30, 2023
    Inventors: Beom Jun CHO, Yong Yook KIM, Hyun Chul KIM, Han A Reum YOO, Yun Sik JUNG