Patents by Inventor Hwi Kim

Hwi 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).

  • Multi-input charging system and method using motor driving system
    Patent number: 11245346
    Abstract: A multi-input charging system and method using a motor driving system can prevent relay fusing or cutting in a motor and damage of a neutral point capacitor provided in a charging power input stage in a process of receiving external charging power through a neutral point of the motor and charging a battery.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: February 8, 2022
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Chae Duck Chon, Jung Hwi Kim
  • Display device including two kinds of pixel arrangements
    Patent number: 11244967
    Abstract: A display device includes a first region and a second region each including a plurality of pixels, and a plurality of wires connected to the plurality of pixels, respectively, to transmit a signal, where the number of pixels per unit area in the second region is less than the number of pixels per unit area in the first region, and the number of wires per unit area in the second region is less than the number of wires per unit area in the first region.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: February 8, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong-Hwi Kim, Jin Jeon
  • LIGHT EMITTING ELEMENT INK AND METHOD OF MANUFACTURING DISPLAY DEVICE
    Publication number: 20220037559
    Abstract: A light emitting element ink comprises a light emitting element solvent, a light emitting element dispersed in the light emitting element solvent, the light emitting element including a plurality of semiconductor layers, and an insulating film surrounding outer surfaces of the plurality of semiconductor layers, and a thickener dispersed in the light emitting element solvent, wherein the thickener includes a compound represented by Chemical Structural Formula 1 as a polyol-based compound capable of forming a hydrogen bond with the light emitting element solvent or another thickener, and the thickener has a boiling point in a range of about 200° C. to about 450° C.
    Type: Application
    Filed: May 13, 2021
    Publication date: February 3, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Hyo Jin KO, Duk Ki KIM, Jun Bo SIM, Na Mi HONG, Yong Hwi KIM, Chang Hee LEE, Jae Kook HA
  • MASK AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20220035250
    Abstract: A mask includes a mask sheet provided with a plurality of open areas defined therein in a plan view and a mask frame which supports the mask sheet. The mask sheet includes a first portion including a first surface, where the first surface is configured to be in contact with a target substrate, and a second portion disposed on the first portion, extending from a top of the first portion in a first direction and including a second surface defining the open area. The second surface is an inclined surface inclined downward with respect to the first direction, and the first direction is parallel to a plane in which the first surface is included.
    Type: Application
    Filed: May 26, 2021
    Publication date: February 3, 2022
    Inventors: JEONGKUK KIM, HWI KIM, AREUM LEE, DA-HEE JEONG, KYU HWAN HWANG, KANGHYUN NAM, SEUNGMIN JIN, JAEMIN HONG
  • DISPLAY DEVICE
    Publication number: 20220028317
    Abstract: A display device includes a display panel in which a first display region and a second display region adjacent to the first display region are defined. The display panel includes main pixels disposed in the first display region, first sub-pixels disposed in a first sub-region of the second display region, and second sub-pixels disposed in a second sub-region of the second display region and which have a different pixel structure from the main pixels.
    Type: Application
    Filed: March 26, 2021
    Publication date: January 27, 2022
    Inventors: HWI KIM, JEONGKUK KIM, KYU HWAN HWANG
  • DISPLAY PANEL AND DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20220013596
    Abstract: A display device includes a window including a front area and a corner area, and a display panel coupled to the window. The display panel includes a first area and a second area corresponding to the front area and the corner area, respectively. The second area includes a plurality of unit areas, a plurality of stretchable areas disposed between the plurality of unit areas, where a plurality of opening areas are defined through the display panel to be adjacent to the plurality of unit areas . A light emitting area of the second area has an area greater than an area of a corresponding light emitting area of the first area.
    Type: Application
    Filed: February 12, 2021
    Publication date: January 13, 2022
    Inventors: HWI KIM, JEONGKUK KIM, AREUM LEE, SEUNGYONG SONG, KYU HWAN HWANG
  • BATTERY HEATING SYSTEM AND METHOD USING MOTOR DRIVING SYSTEM
    Publication number: 20220014137
    Abstract: A battery heating system and method using a motor driving system are provided. A temperature of a battery is increased by injecting an alternating current into the battery so that charging and discharging of the battery is repeated using the motor driving system including an inverter and a motor provided in a vehicle.
    Type: Application
    Filed: November 18, 2020
    Publication date: January 13, 2022
    Inventors: Yong Jae Lee, Jung Hwi Kim, Jung Mo Yu, Jae Ho Hwang, Joo Young Park, Jae Hyeon Park
  • MASK ASSEMBLY AND DEPOSITION APPARATUS INCLUDING THE SAME
    Publication number: 20220013725
    Abstract: A mask includes a body unit through which a deposition opening is defined, and a protrusion unit through which a pattern opening is defined and which protrudes from a corner of the body unit, where a thickness of the body unit is greater than a thickness of the protrusion unit.
    Type: Application
    Filed: April 30, 2021
    Publication date: January 13, 2022
    Inventors: AREUM LEE, JEONGKUK KIM, HWI KIM, SEUNGYONG SONG, KYU HWAN HWANG
  • Stage circuit and a scan driver including the same
    Patent number: 11222573
    Abstract: A stage circuit including: a first sub-stage circuit coupled to a first input terminal receiving an input signal, a second input terminal receiving a first clock signal, and a third input terminal receiving a second clock signal, the first sub-stage circuit controlling a voltage of a first node, a second node, and a third node based on the input signal and the first and second clock signals, and supplying a first scan signal to a first output terminal based on the voltage of the second and third nodes; and a second substage circuit coupled to the second input terminal, a fourth input terminal receiving a third clock signal, and the first and second nodes, the second sub-stage circuit supplying a second scan signal to a second output terminal based on the first and third clock signal, and the voltage of the first and second nodes.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: January 11, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Na Young Kim, Dong Hwi Kim, Jin Jeon
  • STEEL WIRE ROD ENABLING OMISSION OF SOFTENING HEAT TREATMENT AND METHOD OF MANUFACTURING SAME
    Publication number: 20210404039
    Abstract: The present disclosure relates to a steel wire rod enabling the omission of softening heat treatment and a method of manufacturing same. An embodiment of the present disclosure provides a steel wire rod enabling the omission of softening heat treatment and a method of manufacturing same, the steel wire rod comprising, in weight %, 0.2-0.45% of C, 0.02-0.4% of Si, 0.3-1.5% of Mn, 0.01-1.5% of Cr, 0.02-0.05% of Al, 0.01-0.5% of Mo, 0.01% or less of N, and the balance Fe and other unavoidable impurities, wherein the microstructure of the steel wire rod is a composite structure of proeutectoid ferrite+perlite as a main phase; the steel wire rod contains 10 area % or less (including 0%) of at least one of bainite or martensite; and the average colony size of the perlite is 5 ?m or less.
    Type: Application
    Filed: October 18, 2019
    Publication date: December 30, 2021
    Inventors: Jae-Seung Lee, Yo-Sep Yang, In-Gyu Park, Han-Hwi Kim
  • Display control method, storage medium and electronic device
    Patent number: 11210050
    Abstract: According to various example embodiments, an electronic device may include: a flexible display; and a processor for control the flexible display to divide a display area into a plurality of areas including a first area and a second area, in response to detecting of notification event in a folded state, processing the notification event in a first manner using at least one of the first area and the second area when the electronic device is in a first mounted state, and processing the notification event in a second manner using at least one of the first area and the second area when the electronic device is in a second mounted state.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: December 28, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong-Won Ko, Mun-Hwi Kim, Joon-Hwan Kim, Hye-Jin Kim, Kyung-Wook Ro, Myoung-Soo Park, Jung-Woo Shin, Ji-Hun Lee, Han-Ju Cho
  • LIGHT-EMITTING ELEMENT INK, DISPLAY DEVICE, AND METHOD OF FABRICATING THE DISPLAY DEVICE
    Publication number: 20210391308
    Abstract: A light-emitting element ink, a display device, and a method of fabricating the display device are provided. The light-emitting element ink includes a light-emitting element solvent, light-emitting elements dispersed in the light-emitting element solvent, each of the light-emitting elements including a plurality of semiconductor layers and an insulating film that surrounds parts of outer surfaces of the semiconductor layers, and a surfactant dispersed in the light-emitting element solvent, the surfactant including a fluorine-based and/or a silicon-based surfactant.
    Type: Application
    Filed: April 27, 2021
    Publication date: December 16, 2021
    Inventors: Jun Bo SIM, Duk Ki KIM, Yong Hwi KIM, Hyo Jin KO, Chang Hee LEE, Chan Woo JOO, Jae Kook HA, Na Mi HONG
  • DC-to-DC converter
    Patent number: 11183925
    Abstract: A flying DC-to-DC converter has a capacitor protection function of preventing a flying capacitor from overheating. The flying DC-to-DC converter estimates the temperature of a capacitor on the basis of a switching duty and an inductor current determined according to a result of comparison between an output voltage and a voltage instruction value, and determines whether to perform de-rating.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: November 23, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jung Hwi Kim, Jung Mo Yu, Yong Jae Lee, Jae Ho Hwang, Joo Young Park, Jae Hyeon Park
  • Display device having peripheral common voltage line
    Patent number: 11177338
    Abstract: A display device includes: a substrate including a display area at which a pixel including a light emitting element is located and a peripheral area surrounding the display area; and a common voltage line on the substrate, the common voltage line configured to provide a common voltage to the pixel, the common voltage line including: a peripheral common voltage line on the peripheral area of the substrate to surround the display area and connected to a common electrode of the light emitting element; and a plurality of display common voltage lines crossing the display area and each contacting different portions of the peripheral common voltage line, the display common voltage lines being spaced apart from the common electrode of the light emitting element.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: November 16, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Hwi Kim, Na-Young Kim, Chul Ho Kim, Wang Jo Lee, Jin Jeon
  • Pixel and display device including the same
    Patent number: 11176874
    Abstract: A display device includes: a pixel unit having a plurality of pixels; a timing controller supplying respective scan start signals to a plurality of scan drivers and an emission start signal to an emission driver, in response to synchronization signals supplied from the outside; the emission driver supplying an emission signal to emission control lines connected to the pixels based on the emission start signal; the scan drivers supplying scan signals to the scan lines connected to the pixels based on the scan start signal; and a data driver supplying a data signal to data lines connected to the pixels, and at least one of a frequency of the emission start signal and frequencies of the scan start signals may be a first frequency that is determined independently of a driving frequency when the driving frequency is less than or equal to a threshold value.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: November 16, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Na Young Kim, Dong Hwi Kim, Jin Jeon
  • WIRE ROD FOR COLD HEADING, PROCESSED PRODUCT USING SAME, AND MANUFACTURING METHODS THEREFOR
    Publication number: 20210324493
    Abstract: The present disclosure relates to a CHQ wire rod that has improved resistance to hydrogen delayed fracture while securing cold forging characteristics by reducing Si content and adding Mo and V, a processed product using the same, and a manufacturing method thereof. In accordance with an aspect of the present disclosure, a CHQ wire rod includes, in percent (%) by weight of the entire composition, C: 0.3 to 0.5%, Si: 0.1 to 0.3%, Mn: 0.5 to 1.0%, at least two or more of Cr: 0.5 to 1.5%, Mo: 0.5 to 1.5%, V: 0.01 to 0.2%, the remainder of iron (Fe) and other inevitable impurities, and the value of the following formula (1) is 3.56 or more.
    Type: Application
    Filed: August 29, 2019
    Publication date: October 21, 2021
    Inventors: Byung-In Jung, Sang-Yoon Lee, Han Hwi Kim
  • HOLOGRAPHIC DISPLAY APPARATUS AND METHOD FOR PROVIDING EXPANDED VIEWING WINDOW
    Publication number: 20210325827
    Abstract: A holographic display apparatus capable of providing an expanded viewing window and a display method are provided. The holographic display apparatus includes an image processor configured to provide computer generated hologram (CGH) data to a spatial light modulator, wherein the image processor is further configured to generate a hologram data array comprising information of the holographic image to be reproduced at the first resolution or a resolution less than the first resolution, perform an off-axis phase computation on the hologram data array at the second resolution, and then, generate the CHG data at the first resolution.
    Type: Application
    Filed: June 24, 2021
    Publication date: October 21, 2021
    Applicants: SAMSUNG ELECTRONICS CO., LTD., Korea University Research and Business Foundation, Sejong Campus
    Inventors: Hoon SONG, Hwi KIM, Jungkwuen AN, Hongseok LEE, Yunhee KIM, Chilsung CHOI
  • DC-TO-DC CONVERTER
    Publication number: 20210313877
    Abstract: A flying DC-to-DC converter has a capacitor protection function of preventing a flying capacitor from overheating. The flying DC-to-DC converter estimates the temperature of a capacitor on the basis of a switching duty and an inductor current determined according to a result of comparison between an output voltage and a voltage instruction value, and determines whether to perform de-rating.
    Type: Application
    Filed: September 29, 2020
    Publication date: October 7, 2021
    Inventors: Jung Hwi KIM, Jung Mo YU, Yong Jae LEE, Jae Ho HWANG, Joo Young PARK, Jae Hyeon PARK
  • DC-TO-DC CONVERTER
    Publication number: 20210313892
    Abstract: A DC-to-DC converter includes a first capacitor, first to fourth switches connected in series between first and second electrodes of the first capacitor, a second capacitor connected to a connection node of the first switch and the second switch and a connection node of the third switch and the fourth switch, an inductor connected to a connection node of the second switch and the third switch, and a controller that performs PWM control. In a case where a failure occurs in the second capacitor, the DC-to-DC converter performs PWM control such that the first switch and the second switch enter the same state and the third switch and the fourth switch enter the same state on the basis of a result of comparison between a first detection voltage that is a measured output voltage and a target output voltage of the DC-to-DC converter.
    Type: Application
    Filed: September 29, 2020
    Publication date: October 7, 2021
    Inventors: Jung Hwi KIM, Jung Mo YU, Yong Jae LEE, Jae Ho HWANG, Joo Young PARK, Jae Hyeon PARK
  • DC-TO-DC Converter
    Publication number: 20210313886
    Abstract: A DC-to-DC converter includes a first capacitor, first, second, third, and fourth switches connected in series between first and second electrodes of the first capacitor, a second capacitor connected to a connection node of the first switch and the second switch and a connection node of the third switch and the fourth switch, an inductor connected to a connection node of the second switch and the third switch, and a controller that controls an on/off state of each of the first to fourth switches on the basis of a value obtained by applying a reciprocal of a detection current that is a measured current flowing through the inductor to a difference between a first detection voltage and a first voltage instruction value and a difference between a second detection voltage and a second voltage instruction value.
    Type: Application
    Filed: September 24, 2020
    Publication date: October 7, 2021
    Inventors: Jung Hwi Kim, Jung Mo Yu, Yong Jae Lee, Jae Ho Hwang, Joo Young Park, Jae Hyeon Park