Patents by Inventor Dong-Hwi Kim

Dong-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).

  • 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
  • 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
  • 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
  • Publication number: 20210312860
    Abstract: A display device includes pixels which are connected to first scan lines, second scan lines, third scan lines, emission control lines, and data lines; a scan driver which supplies a bias scan signal to each of the third scan lines at a first frequency and supplies a scan signal to each of the first scan line and the second scan line at a second frequency which corresponds to an image refresh rate of each of the pixels; an emission driver which supplies an emission control signal to each of the emission control lines at the first frequency; a data driver which supplies a data signal to each of the data lines at the second frequency; and a timing controller which controls driving of the scan driver, the emission driver, and the data driver.
    Type: Application
    Filed: June 17, 2021
    Publication date: October 7, 2021
    Inventors: Dong Hwi KIM, Na Young KIM, Jin JEON
  • Publication number: 20210295779
    Abstract: A display device including: pixels coupled to first scan lines, second scan lines, emission control lines, and data lines; a first scan driver configured to supply a first scan signal to each of the first scan lines at a first frequency; a second scan driver configured to supply a second scan signal to each of the second scan lines at a second frequency corresponding to a driving frequency of the pixels; an emission driver configured to supply an emission control signal to each of the emission control lines at the first frequency; a data driver configured to supply a data signal to each of the data lines at the second frequency; and a timing controller configured to control the first scan driver, the second scan driver, the emission driver, and the data driver.
    Type: Application
    Filed: June 7, 2021
    Publication date: September 23, 2021
    Inventors: Dong Hwi KIM, Na Young KIM, Yong Jae KIM, Chul Ho KIM, Jin JEON
  • Publication number: 20210287599
    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: Application
    Filed: September 15, 2020
    Publication date: September 16, 2021
    Inventors: Na Young KIM, Dong Hwi KIM, Jin JEON
  • Publication number: 20210287585
    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: Application
    Filed: March 10, 2021
    Publication date: September 16, 2021
    Inventors: Na Young KIM, Dong Hwi KIM, Jin JEON
  • Publication number: 20210272985
    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: Application
    Filed: August 18, 2020
    Publication date: September 2, 2021
    Inventors: Dong-Hwi KIM, Jin JEON
  • Publication number: 20210234404
    Abstract: A detachable seat wireless power transfer and communication system includes: a seat assembly including a seat receiver configured to receive power wirelessly and a seat controller to control the seat receiver; a vehicle assembly spaced apart from the seat assembly at a lower end of the seat assembly; a front hook spaced apart from the seat assembly at a lower end of a front portion of the seat assembly in a length direction to fix a first end of the seat assembly to a vehicle body; a rear latch spaced apart from the seat assembly at a lower end of a rear portion of the seat assembly in the length direction to fix a second end of the seat assembly to the vehicle body; and a front hook switch spaced apart from the vehicle assembly. The vehicle assembly includes a vehicle transmitter configured to wirelessly transmit the power to the seat assembly, and a vehicle controller configured to control the vehicle transmitter.
    Type: Application
    Filed: September 29, 2020
    Publication date: July 29, 2021
    Inventors: Tae Su Kim, Bo Hyeon Han, Dong Hwi Kim, Won San Na, Jae Myung Hur, Jong Ho Lim
  • Patent number: 11056060
    Abstract: A display device including: pixels coupled to first scan lines, second scan lines, emission control lines, and data lines; a first scan driver configured to supply a first scan signal to each of the first scan lines at a first frequency; a second scan driver configured to supply a second scan signal to each of the second scan lines at a second frequency corresponding to a driving frequency of the pixels; an emission driver configured to supply an emission control signal to each of the emission control lines at the first frequency; a data driver configured to supply a data signal to each of the data lines at the second frequency; and a timing controller configured to control the first scan driver, the second scan driver, the emission driver, and the data driver.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: July 6, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong Hwi Kim, Na Young Kim, Yong Jae Kim, Chul Ho Kim, Jin Jeon
  • Patent number: 11056049
    Abstract: A display device includes pixels which are connected to first scan lines, second scan lines, third scan lines, emission control lines, and data lines; a scan driver which supplies a bias scan signal to each of the third scan lines at a first frequency and supplies a scan signal to each of the first scan line and the second scan line at a second frequency which corresponds to an image refresh rate of each of the pixels; an emission driver which supplies an emission control signal to each of the emission control lines at the first frequency; a data driver which supplies a data signal to each of the data lines at the second frequency; and a timing controller which controls driving of the scan driver, the emission driver, and the data driver.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: July 6, 2021
    Inventors: Dong Hwi Kim, Na Young Kim, Jin Jeon
  • Patent number: 11031632
    Abstract: The present invention relates to a method for recovering a positive electrode active material from a lithium secondary battery including: 1) separating a positive electrode into a collector and a positive electrode part; 2) removing an organic substance by firing the separated positive electrode part; 3) washing the fired resultant and removing remaining fluorine (F); 4) adding a lithium-containing material into the washed resultant and firing to recover a lithium transition metal oxide.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: June 8, 2021
    Inventors: Dong Hun Lee, Dae Jin Lee, Ji Hoon Ryu, Gi Beom Han, Dong Hwi Kim, Wang Mo Jung, Sang Wook Lee, Eun Sol Lho
  • Publication number: 20210167365
    Abstract: A positive electrode material for a lithium secondary battery according to the present invention includes a first positive electrode active material and a second positive electrode active material, wherein the first positive electrode active material and the second positive electrode active material are lithium composite transition metal oxides containing transition metals such as nickel (Ni), cobalt (Co) and manganese (Mn), the first positive electrode active material has a larger average particle size (D50) than the second positive electrode active material, a ratio (Li/Me)1 of the mole number of lithium with respect to the total mole number of transition metals of the first positive electrode active material is more than 1 to 1.5 or less, a ratio (Li/Me)2 of the mole number of lithium (Li) with respect to the total mole number of transition metals of the second positive electrode active material is 0.9 to 1, and the second positive electrode active material has a crystallite size of 180 nm or more.
    Type: Application
    Filed: May 22, 2019
    Publication date: June 3, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Dong Hwi Kim, Dong Hun Lee, Wang Mo Jung, Sung Bin Park, Gi Beom Han
  • Publication number: 20210142733
    Abstract: A pixel of an OLED display device includes a capacitor coupled between first and second nodes, first and second transistors, each including a gate receiving a respective initialization signal, a first terminal receiving a first power supply voltage, and a second terminal coupled to the capacitor, a third transistor including a first terminal coupled to a data line and a second terminal coupled to the first node, a fourth transistor including a gate coupled to the second node, a first terminal receiving the first power supply voltage, and a second terminal coupled to a third node, a fifth transistor including a first terminal coupled to the third node and a second terminal coupled to the second node, sixth and seventh transistors receiving a scan signal, eighth and ninth transistors receiving an emission signal, and an OLED.
    Type: Application
    Filed: August 3, 2020
    Publication date: May 13, 2021
    Inventors: Na-Young KIM, Dong-Hwi KIM, Chul Ho KIM, Yun Hwan PARK, Jin JEON, Hyun Wook CHOI
  • Publication number: 20210135195
    Abstract: A positive electrode active material precursor is provided, which includes a transition metal hydroxide particle represented by Formula 1 and a cobalt oxide particle and a manganese oxide particle attached to the surface of the transition metal hydroxide particle. A preparation method thereof, a positive electrode active material prepared using the same, a positive electrode including the positive electrode active material, and a secondary battery including the positive electrode are also provided.
    Type: Application
    Filed: November 21, 2018
    Publication date: May 6, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Dong Hwi Kim, Wang Mo Jung, Dong Hun Lee, Sung Bin Park, Ji Hye Kim, Hyung Man Cho, Jung Min Han
  • Publication number: 20210125543
    Abstract: A pixel for a display device includes a light-emitting element, a first transistor including a first electrode electrically connected to a first node and controlling a driving current, a second transistor electrically connected between a data line and the first node and being turned on in response to a first scan signal supplied through a first scan line, a third transistor electrically connected between the second node and a third node electrically connected to a second electrode of the first transistor and being turned on in response to the first scan signal, and a fourth transistor being turned on in response to a second scan signal supplied through a second scan line, and applying a bias voltage to the first transistor. The fourth transistor is turned on at a first frequency. The second and third transistors are turned on at a second frequency different from the first frequency.
    Type: Application
    Filed: May 22, 2020
    Publication date: April 29, 2021
    Applicant: Samsung Display Co., LTD.
    Inventors: Na Young KIM, Dong Hwi KIM, Jin JEON
  • Publication number: 20210118365
    Abstract: A pixel circuit includes first to fifth transistors, a capacitor, and a light emitting element. The first transistor is coupled between first and second power lines, and includes a gate electrode coupled to a first node and a back-gate electrode coupled to a second node. The second transistor is coupled between a data line and the first node, and includes a gate electrode coupled to a first scan line. The third transistor is coupled between a third power line and the first node, and includes a gate electrode coupled to a reference scan line. The fourth transistor is coupled between a second node and a fourth power line, and includes a gate electrode coupled to a second scan line. The fifth transistor is coupled between a first power line and the one electrode of the first transistor, and includes a gate electrode coupled to a light-emitting control line.
    Type: Application
    Filed: December 30, 2020
    Publication date: April 22, 2021
    Inventors: Dong Hwi Kim, Na Young Kim, Chul Ho Kim, Wang Jo Lee, Jin Jeon
  • Patent number: 10960792
    Abstract: An auxiliary seat storage apparatus of a seat is disclosed. An auxiliary seat slides in a lower portion of a main seat in a state of being folded to be accommodated in the lower portion of the main seat such that convenience of a user and storability can be improved. Further, when the auxiliary seat is accommodated in the lower portion of the main seat, the auxiliary seat is moved forward so that a foot insertion space is secured to a rear side of the auxiliary seat in a state in which the auxiliary seat is accommodated in the lower portion of the main seat such that ease of access of a passenger sitting on a rear seat can be improved.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: March 30, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation, DAE WON SAN UP CO., LTD
    Inventors: Eun Sue Kim, Hong Heui Lee, Seung Hyeok Chang, Sun Ho Hur, Sang Yong Koo, Dong Hwi Kim
  • Patent number: 10950157
    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 sub-stage 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: September 28, 2020
    Date of Patent: March 16, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Na Young Kim, Dong Hwi Kim, Jin Jeon
  • Patent number: 10909923
    Abstract: A pixel circuit includes first to fifth transistors, a capacitor, and a light emitting element. The first transistor is coupled between first and second power lines, and includes a gate electrode coupled to a first node and a back-gate electrode coupled to a second node. The second transistor is coupled between a data line and the first node, and includes a gate electrode coupled to a first scan line. The third transistor is coupled between a third power line and the first node, and includes a gate electrode coupled to a reference scan line. The fourth transistor is coupled between a second node and a fourth power line, and includes a gate electrode coupled to a second scan line. The fifth transistor is coupled between a first power line and the one electrode of the first transistor, and includes a gate electrode coupled to a light-emitting control line.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: February 2, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong Hwi Kim, Na Young Kim, Chul Ho Kim, Wang Jo Lee, Jin Jeon