Patents by Inventor Hai-Jung In

Hai-Jung In 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: 20240105100
    Abstract: A pixel including a light emitting device, a first transistor including a first electrode connected to a first node electrically connected to a first power source, a second transistor connected between a data line and the first node and turned on in response to a first scan signal supplied to a first scan line, a third transistor connected between a third node connected to a second electrode of the first transistor and a second node and turned on in response to a second scan signal supplied to a second scan line, a fourth transistor turned on in response to a third scan signal, and a storage capacitor connected between the first power source and the second node, in which the second scan signal overlaps the first scan signal, and a width of the second scan signal is greater than twice a width of the first scan signal.
    Type: Application
    Filed: December 7, 2023
    Publication date: March 28, 2024
    Inventors: Hai Jung IN, Ki Myeong EOM, Kyong Hwan OH
  • Patent number: 11935463
    Abstract: A light emitting display device includes: a light emitting diode at a display area, and including an anode and a cathode; a pixel circuit at the display area, and to transmit an output current to the anode of the light emitting diode; a repair line extending in a first direction; a repair pixel circuit connected to the repair line; a bridge including one end overlapping with the repair line; and a connecting portion connected to the anode, and including one end overlapping with the bridge. The bridge is not connected to the repair line, the connecting portion, and the anode.
    Type: Grant
    Filed: December 22, 2022
    Date of Patent: March 19, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hai-Jung In, Minku Lee, Seunghee Lee
  • Patent number: 11935458
    Abstract: A display device includes: a first pixel connected to a first data line and a first scan line; a second pixel connected to the first data line and a second scan line; a first scan driver connected to a first scan start line and the first scan line; and a second scan driver connected to a second scan start line and the second scan line. In a first frame period, the second scan start line is to be suppled with a second scan start signal having a turn-on level, after a first period elapses after a first scan start signal having a turn-on level is supplied to the first scan start line. In a second frame period, a difference between a time at which the first scan start signal having the turn-on level is supplied and a time at which the second scan start signal having the turn-on level is supplied corresponds to a second period. The second period is shorter than the first period.
    Type: Grant
    Filed: June 27, 2022
    Date of Patent: March 19, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji Hyun Ka, Ki Myeong Eom, Kyong Hwan Oh, Hai Jung In
  • Patent number: 11929028
    Abstract: A display panel includes an electrostatic protection circuit including a first protection circuit electrically connected between a first signal line and a second signal line. The first protection circuit includes a first transistor connected between the first signal line and the second signal line and including a gate electrode and a lower gate electrode, a first resistor connected between the gate electrode of the first transistor and the second signal line, a first capacitor connected between the gate electrode of the first transistor and the second signal line, and a second capacitor connected between the lower gate electrode of the first transistor and the second signal line. The lower gate electrode of the first transistor receives a reference voltage.
    Type: Grant
    Filed: January 13, 2023
    Date of Patent: March 12, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hai-Jung In, Minku Lee, Seunghee Lee
  • Publication number: 20240062705
    Abstract: A scan driver for driving a plurality of pixels, the scan driver including: stages connected to each other through carry lines, a first stage among the stages includes: a first scan circuit configured to generate a first scan signal in response to a stage select signal, and apply the first scan signal to pixels of the same row among the plurality of pixels; and a second scan circuit electrically connected to the first scan circuit to generate a carry signal overlapping the first scan signal, and configured to provide a second scan signal to the pixels of the same row in response to the carry signal, and the carry signal is output as the stage select signal to a second stage among the stages through one of the carry lines.
    Type: Application
    Filed: May 16, 2023
    Publication date: February 22, 2024
    Inventors: Hai Jung IN, Sung Min Son, Jae Jin Song, Jung Woo Lee
  • Patent number: 11908377
    Abstract: A repair pixel and a display apparatus including the repair pixel, the display panel including a repair pixel for a pixel row or a plurality of repair pixels for a pixel row so that repair may be performed using the repair pixel when a bad pixel occurs in the corresponding pixel row. The bad pixel is repaired using the repair pixel so that the yield of the display panel may be enhanced.
    Type: Grant
    Filed: June 3, 2022
    Date of Patent: February 20, 2024
    Assignee: Samsung Display Co., LTD.
    Inventors: Hai-Jung In, Sungmin Son, Jae-Jin Song
  • Patent number: 11887399
    Abstract: A biometric information detecting device includes a measurer, a determiner, a controller, and a processor. The measurer measures biometric information of a user as an electrical signal. The determiner is connected to the measurer to receive the electrical signal, processes the electrical signal according to a first reference condition to output a first result signal, and processes the electrical signal according to a second reference condition to output a second result signal. The controller controls the determiner such that the determiner is operated in the first reference condition or the second reference condition, and the processor processes the first and second result signals to obtain the biometric information of the user.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: January 30, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Weonjun Choe, Hai-jung In, Jinwoo Kim, Hyoungwook Jang
  • Patent number: 11881148
    Abstract: A display device includes pixels coupled to first scan lines, second scan lines, emission control lines, and data lines; a first scan driver to supply a scan signal to each of the first scan lines at a first frequency to drive the display device at a first driving frequency, and to supply the scan signal to each of the first scan lines at a second frequency to drive the display device at a second driving frequency lower than the first driving frequency; a second scan driver to supply a scan signal to each of the second scan lines at the first frequency to drive the display device at the first driving frequency, and to supply the scan signal to each of the second scan lines at the second frequency to drive the display device at the second driving frequency; an emission driver to supply an emission control signal to each of the emission control lines at the first frequency; and a data driver to supply a data signal to each of the data lines in response to the scan signal supplied to each of the first scan lines
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: January 23, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyong Hwan Oh, Ji Hyun Ka, Ki Myeong Eom, Hai Jung In, Jin Jeon, Won Kyu Kwak, Hyun Lee, Hwan Soo Jang, Jin Tae Jeong
  • Patent number: 11875753
    Abstract: A display device includes a display panel, a data driver which provides data voltages to the display panel, and a controller which provides output image data to the data driver. The controller includes a data line memory which stores input image data for each pixel row of the display panel, an address line memory which stores addresses for the input image data, and a data serialize block which generates the output image data provided to the data driver by rearranging the input image data stored in the data line memory based on the addresses stored in the address line memory.
    Type: Grant
    Filed: September 12, 2022
    Date of Patent: January 16, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hai-Jung In
  • Patent number: 11869406
    Abstract: A scan driver of the disclosure includes a plurality of stage groups configured to supply scan signals to scan lines based on clock signals, carry clock signals, and first and second powers. A first stage group of the stage groups includes a first stage configured to supply a first scan signal to a first scan line based on an input signal, a first clock signal of the clock signals, a first carry clock signal of the carry clock signals, and the first and second powers, and a second stage configured to supply a second scan signal to a second scan line based on the input signal, a second clock signal of the clock signals, a second carry clock signal of the carry clock signals, and the first and second powers. The first stage and the second stage are commonly connected to a first node and a second node.
    Type: Grant
    Filed: February 23, 2023
    Date of Patent: January 9, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventor: Hai Jung In
  • Patent number: 11869412
    Abstract: A display device including a pixel connected to a first scan line, a second scan line, a third scan line, an emission control line, and a data line; a first driver supplying a first scan signal to the first scan line in a first period; a second driver supplying a second scan signal to the second scan line in the first period; a third driver supplying a third scan signal to the third scan line in the first and second periods; an emission driver supplying a control signal to the emission control line in the first and second periods; and a data driver supplying a data signal to the data line in the first period, in which a width of the second scan signal is greater than that of the first scan signal to overlap a plural first scan signals respectively supplied to first scan lines during the first period.
    Type: Grant
    Filed: January 3, 2022
    Date of Patent: January 9, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hai Jung In, Ki Myeong Eom, Kyong Hwan Oh
  • Patent number: 11847948
    Abstract: A driver includes first to Mth stages, where a first input signal and a second input signal are input to each of the first to Mth stages, and each of the first to Mth stages outputs a stage output signal, a first carry signal, and a second carry signal, where M is a natural number greater than or equal to 2. The first carry signal and the second carry signal output from a kth stage are the first input signal and the second input signal, which are input to a (k+1)th stage, respectively, where k is a natural number greater than or equal to 1 and less than M, and the first input signal and the second input signal, which are input to a first stage, are a first start signal and a second start signal which are alternately changed for predetermined frame times, respectively.
    Type: Grant
    Filed: December 27, 2022
    Date of Patent: December 19, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hai-Jung In
  • Patent number: 11847956
    Abstract: A scan driver is disclosed that includes a plurality of stages for supplying scan signals to scan lines. A first stage among the stages includes: a first sub-stage circuit for generating a first scan signal, based on an input signal, a first clock signal, a second clock signal, a first power source, and a second power source; and a first charge pump circuit for supplying a bias voltage to the first sub-stage circuit, based on a third power source.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: December 19, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventor: Hai Jung In
  • Publication number: 20230386379
    Abstract: A driver includes first to Mth stages, where a first input signal and a second input signal are input to each of the first to Mth stages, and each of the first to Mth stages outputs a stage output signal, a first carry signal, and a second carry signal, where M is a natural number greater than or equal to 2. The first carry signal and the second carry signal output from a kth stage are the first input signal and the second input signal, which are input to a (k+1)th stage, respectively, where k is a natural number greater than or equal to 1 and less than M, and the first input signal and the second input signal, which are input to a first stage, are a first start signal and a second start signal which are alternately changed for predetermined frame times, respectively.
    Type: Application
    Filed: December 27, 2022
    Publication date: November 30, 2023
    Inventor: Hai-Jung IN
  • Publication number: 20230386397
    Abstract: A display device includes a power supply to supply a first initialization power source to the pixels through a first initialization and to supply a second initialization power source to the pixels through a second power line.
    Type: Application
    Filed: August 8, 2023
    Publication date: November 30, 2023
    Inventors: Kyong Hwan OH, Jin Tae JEONG, Ji Hyun KA, Won Kyu KWAK, Hyung Jun PARK, Chang Soo PYON, Ji Eun LEE, Hai Jung IN, Won Mi HWANG
  • Patent number: 11830412
    Abstract: A display device includes pixels coupled to first scan lines, second scan lines, emission control lines, and data lines; a first scan driver to supply a scan signal to each of the first scan lines at a first frequency to drive the display device at a first driving frequency, and to supply the scan signal to each of the first scan lines at a second frequency to drive the display device at a second driving frequency lower than the first driving frequency; a second scan driver to supply a scan signal to each of the second scan lines at the first frequency to drive the display device at the first driving frequency, and to supply the scan signal to each of the second scan lines at the second frequency to drive the display device at the second driving frequency; an emission driver to supply an emission control signal to each of the emission control lines at the first frequency; and a data driver to supply a data signal to each of the data lines in response to the scan signal supplied to each of the first scan lines
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: November 28, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyong Hwan Oh, Ji Hyun Ka, Ki Myeong Eom, Hai Jung In, Jin Jeon, Won Kyu Kwak, Hyun Lee, Hwan Soo Jang, Jin Tae Jeong
  • Publication number: 20230377504
    Abstract: A gate driver includes first and second stages. Each of the first and second stages includes an output circuit which outputs a scan signal, a carry signal and an inverted carry signal based on voltages of first and second nodes, a first input terminal, a second input terminal, a third input terminal, a first output terminal, and a second output terminal. The first stage further includes a first input circuit which controls the voltages of the first and second nodes thereof based on a start pulse and a signal supplied to the second input terminal. The second stage further includes a second input circuit which controls the voltages of the first and second nodes thereof based on a first carry signal and a first inverted carry signal, and a signal supplied to the second input terminal. The second stage is dependently connected to the first stage.
    Type: Application
    Filed: August 1, 2023
    Publication date: November 23, 2023
    Inventor: Hai Jung IN
  • Publication number: 20230360573
    Abstract: A gate driver includes: a pull-up circuit configured to pull up a gate output signal to a high voltage in response to a signal at a first node of the pull-up circuit; a first pull-down circuit configured to pull down the gate output signal to a low voltage in response to a signal at a second node of the first pull-down circuit; a second pull-down circuit configured to pull down the gate output signal to the low voltage in response to a signal at a third node of the second pull-down circuit; a first selection circuit configured to activate the first pull-down circuit and deactivate the second pull-down circuit based on a first selection signal; and a second selection circuit configured to activate the second pull-down circuit and deactivate the first pull-down circuit based on a second selection signal.
    Type: Application
    Filed: January 10, 2023
    Publication date: November 9, 2023
    Inventors: Hai-Jung IN, Chulkyu KANG, Kimyeong EOM, Soon-Gi KWON, Min Jeong KIM
  • Publication number: 20230351941
    Abstract: A gate driver includes a carry signal generating circuit and a shift register circuit. The carry signal generating circuit receives a vertical start signal and outputs first and second carry signals. The shift register circuit receives the first and second carry signals and outputs a first stage first carry signal, a first stage second carry signal and a first stage gate output signal. The carry signal generating circuit includes a first carry generator generating the first carry signal and a second carry generator generating the second carry signal. The shift register circuit includes a first stage first carry generator generating the first stage first carry signal, a first stage second carry generator generating the first stage second carry signal and a first stage output buffer outputting the first stage gate output signal.
    Type: Application
    Filed: December 20, 2022
    Publication date: November 2, 2023
    Inventor: HAI-JUNG IN
  • Publication number: 20230326399
    Abstract: An emissive display device includes: a light emitting diode; an n-type driving transistor comprising a first driving gate electrode, a first electrode receiving a driving voltage, a second electrode transferring an output current to the anode, and a second driving gate electrode; a second transistor connected to a data line; a third transistor configured to connect the first electrode and the first driving gate electrode of the driving transistor; a storage capacitor comprising a first storage electrode and a second storage electrode connected to the first driving gate electrode; a ninth transistor transferring an overlapping electrode voltage to the second driving gate electrode; an overlapping electrode voltage line crossing the data line and receiving the overlapping electrode voltage; and a shielding electrode at an intersection of the data line and the overlapping electrode voltage line and between the data line and the overlapping electrode voltage line.
    Type: Application
    Filed: February 16, 2023
    Publication date: October 12, 2023
    Inventors: MINKU LEE, Ji-Hyun KA, Chul Kyu KANG, SEUNGHEE LEE, Hai-Jung IN, HYEONGJUN JIN, Hyun Ji CHA