Patents by Inventor Young-soo Hwang

Young-soo Hwang 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: 12266296
    Abstract: A display device includes pixels connected to scan lines, control lines, data lines, and sensing lines; a scan driver configured to supply a scan signal to the scan lines and supply a control signal to the control lines; a data driver configured to supply one of an image data signal and a sensing data signal to the data lines; a sensing circuit configured to sense the characteristics based on a sensing current supplied through the sensing lines during the sensing period; and a power supply configured to supply a voltage of first power to the pixels.
    Type: Grant
    Filed: November 9, 2023
    Date of Patent: April 1, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Soo Hwang, Hideo Yoshimura
  • Publication number: 20250097401
    Abstract: A display device includes: pixels; a first electrode located on the pixels; a liquid crystal layer located on the first electrode; a second electrode located on the liquid crystal layer; a lens array located on the second electrode; and a control circuit including a first node electrically connected to the first electrode and a second node electrically connected to the second electrode. In a first mode, the control circuit applies a first node voltage to the first node, and applies, to the second node, a second node voltage which alternates a high level higher than a voltage level of the first node voltage and a low level lower than the voltage level of the first node voltage. In a second mode, the control circuit allows the first node and the second node to be short-circuited.
    Type: Application
    Filed: September 10, 2024
    Publication date: March 20, 2025
    Inventors: Young Soo HWANG, Seong Joo LEE
  • Publication number: 20250044646
    Abstract: A display device includes a display unit including a plurality of pixels arranged in a first direction and a second direction intersecting the first direction and a lens unit disposed on the display unit and configured to refract an image output from the display unit. The lens unit includes a lens array including a plurality of lenses each extending at an acute angle with respect to the second direction and a liquid crystal layer disposed on the lens array. The liquid crystal layer includes liquid crystal molecules oriented in substantially the same direction as an extension direction of the lenses.
    Type: Application
    Filed: May 29, 2024
    Publication date: February 6, 2025
    Inventors: Su Jung HUH, Eun Kyoung NAM, Young Soo HWANG, Su Bin JUNG, Hyun Jin CHO
  • Patent number: 12175923
    Abstract: A display device including a scan line extending in a first direction, a sensing scan line extending in the first direction and spaced from the scan line, a data line extending in a second direction crossing the first direction, a sensing line extending in the second direction and spaced from the data line, a sensing enable signal line extending in the second direction and spaced from the data line and the sensing line, and a sub-pixel connected to the scan line, the sensing scan line, the data line, the sensing line, and the sensing enable signal line. The sub-pixel includes a plurality of light emitting elements between a first node and a second node, a first transistor configured to supply a driving current to the first node according to a voltage of a gate electrode, and a second transistor to control a connection between the first and second nodes.
    Type: Grant
    Filed: May 2, 2023
    Date of Patent: December 24, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young Soo Hwang, Hyung Jin Kim
  • Patent number: 12165556
    Abstract: A display device includes a display part, a degradation compensator that generates a first compensated grayscale value by compensating for a first grayscale value corresponding to a first pixel, and generates a second compensated grayscale value by compensating for a second grayscale value corresponding to a second pixel, and a data driver that generates a first data signal based on the first compensated grayscale value to supply the first data signal to the first pixel, and generates a second data signal based on the second compensated grayscale value to supply the second data signal to the second pixel. A second degradation curve is defined by a first degradation coefficient corresponding to a first degradation curve, and a second degradation coefficient corresponding to a first estimated degradation curve for the light conversion particles of a second color calculated by applying the first degradation curve.
    Type: Grant
    Filed: August 9, 2022
    Date of Patent: December 10, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seok Ha Hong, Joon Chul Goh, Dong Joon Kwag, Hyung Jin Kim, Ji Eun Park, Jae Sung Bae, Young Soo Hwang
  • Publication number: 20240339060
    Abstract: A display device includes an optical member including a plurality of three-dimensional lenses, a display module coupled to the optical member, and a main controller. The display module includes a display panel including a plurality of sub-pixels and a storage device configured to store offset data representing a relative arrangement position between the three-dimensional lenses and the sub-pixels. The main controller is configured to receive the offset data from the display module by accessing the display module in a power-on mode, and correct image data to be provided to the display module, based on the offset data.
    Type: Application
    Filed: February 7, 2024
    Publication date: October 10, 2024
    Inventors: Byeong Hee WON, Young Soo HWANG
  • Publication number: 20240340402
    Abstract: A display device includes a display panel, an optical member, and a display driver. The display panel is configured to display a plurality of 2D images. The optical member is configured to refract 2D image display light displayed in a display area of the display panel into a first refraction direction or a second refraction direction to output 3D stereoscopic image display light. The display driver is configured to control a refraction direction of the 3D stereoscopic image display light by dividing a 3D stereoscopic image display period of at least one frame into first and second time-division frames and supplying driving voltages to the optical member in each of the first and second time-division frames.
    Type: Application
    Filed: April 5, 2024
    Publication date: October 10, 2024
    Inventors: Su Jung HUH, Rang Kyun MOK, Hyun Jin CHO, Eun Kyoung NAM, Byeong Hee WON, Young Soo HWANG
  • Patent number: 12100359
    Abstract: A display device includes a display panel including sub-pixels arranged in an image display region of the display panel to display an image, a data driver that applies a data voltage to data lines, a scan signal driver that applies scan signals to scan signal lines, a data compensator that analyzes image data received from an outside to divide at least one deterioration region and deterioration peripheral regions, and compares and analyzes image data of the at least one deterioration region and the deterioration peripheral regions to compensate or modulate the image data of the at least one deterioration region, and a timing controller that controls the data driver and the scan signal driver to display compensation data including the compensated or modulated image data as an image.
    Type: Grant
    Filed: August 4, 2022
    Date of Patent: September 24, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong Joon Kwag, Young Soo Hwang, Hyung Jin Kim
  • Publication number: 20240071329
    Abstract: A display device includes a display panel, a first electrode layer on the display panel, a liquid crystal layer on the first electrode layer, a second electrode layer on the liquid crystal layer, and a lens layer on the second electrode layer. The second electrode layer includes first sensors and second sensors forming a capacitance with each other, a first period includes a first frame period and a second frame period, a first voltage level of a first voltage applied to the first electrode layer during the first frame period is less than a second voltage level applied to the first electrode layer during the second frame period, and a first average voltage level of driving signals applied to the first sensors during the first frame period is less than a second average voltage level of the driving signals during the second frame period.
    Type: Application
    Filed: June 28, 2023
    Publication date: February 29, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: Su Jung HUH, Young Soo HWANG
  • Publication number: 20240071297
    Abstract: A display device includes pixels connected to scan lines, control lines, data lines, and sensing lines; a scan driver configured to supply a scan signal to the scan lines and supply a control signal to the control lines; a data driver configured to supply one of an image data signal and a sensing data signal to the data lines; a sensing circuit configured to sense the characteristics based on a sensing current supplied through the sensing lines during the sensing period; and a power supply configured to supply a voltage of first power to the pixels.
    Type: Application
    Filed: November 9, 2023
    Publication date: February 29, 2024
    Inventors: Young Soo HWANG, Hideo YOSHIMURA
  • Publication number: 20240036349
    Abstract: A stereoscopic image display device includes a display panel that includes pixels, a polarization controller that generates a first output voltage and a second output voltage, and a polarization control layer that controls a path of light emitted by the display panel, based on the first output voltage and the second output voltage. The first output voltage has a first voltage level in a first mode, and a second voltage level that differs from the first voltage level in a second mode. The second output voltage has the first voltage level in the first mode, and has the first voltage level or a third voltage level that differs from the first and second voltage levels in the second mode.
    Type: Application
    Filed: May 12, 2023
    Publication date: February 1, 2024
    Inventors: Young Soo Hwang, Su Bin Jung
  • Publication number: 20240029632
    Abstract: A display device includes: a pixel including a light emitting element; and a sensing channel connected to a first electrode of the light emitting element by a first sensing line, and connected to a second electrode of the light emitting element by a second sensing line. The sensing channel includes: an amplifier including a first input terminal connected to the second sensing line; and a first switch which connects an output terminal of the amplifier to the first sensing line.
    Type: Application
    Filed: April 17, 2023
    Publication date: January 25, 2024
    Inventors: Young Soo HWANG, SUNG-CHAN JO
  • Patent number: 11875733
    Abstract: A method of driving a display device, includes: supplying a first sensing data signal corresponding to a first grayscale, first power having a first sensing voltage, and a reference voltage to a pixel during a first sensing period; sensing a first sensing current, generated based on the first sensing voltage, from the pixel during the first sensing period; supplying a second sensing data signal corresponding to a second grayscale and different from the first sensing data signal, the first power having a second sensing voltage, and the reference voltage to the pixel during a second sensing period; sensing a second sensing current, generated based on the second sensing voltage different from the first sensing voltage, from the pixel during the second sensing period; and calculating characteristics of a driving transistor of the pixel using the first sensing current and the second sensing current.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: January 16, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Soo Hwang, Hideo Yoshimura
  • Patent number: 11830416
    Abstract: A method of driving a display device, includes: supplying a first sensing data signal corresponding to a first grayscale, first power having a first sensing voltage, and a reference voltage to a pixel during a first sensing period; sensing a first sensing current, generated based on the first sensing voltage, from the pixel during the first sensing period; supplying a second sensing data signal corresponding to a second grayscale and different from the first sensing data signal, the first power having a second sensing voltage, and the reference voltage to the pixel during a second sensing period; sensing a second sensing current, generated based on the second sensing voltage different from the first sensing voltage, from the pixel during the second sensing period; and calculating characteristics of a driving transistor of the pixel using the first sensing current and the second sensing current.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: November 28, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Soo Hwang, Hideo Yoshimura
  • Publication number: 20230368725
    Abstract: A display device including a scan line extending in a first direction, a sensing scan line extending in the first direction and spaced from the scan line, a data line extending in a second direction crossing the first direction, a sensing line extending in the second direction and spaced from the data line, a sensing enable signal line extending in the second direction and spaced from the data line and the sensing line, and a sub-pixel connected to the scan line, the sensing scan line, the data line, the sensing line, and the sensing enable signal line. The sub-pixel includes a plurality of light emitting elements between a first node and a second node, a first transistor configured to supply a driving current to the first node according to a voltage of a gate electrode, and a second transistor to control a connection between the first and second nodes.
    Type: Application
    Filed: May 2, 2023
    Publication date: November 16, 2023
    Inventors: Young Soo HWANG, Hyung Jin KIM
  • Patent number: 11798464
    Abstract: A display device includes a degradation compensator, a controller, a data driver, and a display panel. The degradation compensator generates a first fitting function and a second fitting function based on image data, generates a compensation function through a harmonic mean of the first and second fitting functions, and generates a compensation value based on the compensation function. The controller receives the compensation value, and generates input image data to which the compensation value is applied. The data driver receives the input image data to which the compensation value is applied, and converts the input image data into a data voltage. The display panel includes pixels, in which each of the pixels includes a pixel circuit which receives the data voltage and a light-emitting element electrically connected to the pixel circuit.
    Type: Grant
    Filed: August 31, 2022
    Date of Patent: October 24, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young-Soo Hwang, Joon-Chul Goh, Dongjoon Kwag, Hyungjin Kim, Ji-Eun Park, Jaesung Bae, Seokha Hong
  • Patent number: 11705046
    Abstract: A data driver includes a multi-channel sample/hold circuit electrically connected between a digital-to-analog converter and a data buffer. The multi-channel sample/hold circuit includes a first sample/hold circuit connected to a first channel and a second sample/hold circuit connected to a second channel. The first sample/hold circuit performs a first drive operation and a second drive operation. The first drive operation includes sampling a data voltage as a buffer input voltage and maintaining the buffer input voltage during an nth horizontal time. The second drive operation includes outputting the buffer input voltage to an output terminal of the buffer during an (n+1)th horizontal time. The second sample/hold circuit performs the second drive operation during the nth horizontal time and performs the first drive operation during the (n+1)th horizontal time.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: July 18, 2023
    Assignees: SAMSUNG DISPLAY CO., LTD., KOREA UNIVERSITY RESEARCH & BUSINESS FOUNDATION
    Inventors: Young Soo Hwang, Joon Chul Goh, Oh Jo Kwon, Ki Duk Kim, Jeong Min Kim, Bong Hyun You, Hyung Min Lee, Seung Hun Choi
  • Patent number: 11682334
    Abstract: A driving controller includes: a grayscale determiner, which determines a current grayscale of input image data, a deterioration time determiner, which determines a first deterioration time for the current grayscale corresponding to an accumulated deterioration degree, a current deterioration degree calculator, which calculates a second deterioration time by summing the first deterioration time and a calculation period, and calculates a current deterioration degree for the current grayscale according to the second deterioration time, and an image compensator, which compensates the input image data based on the current deterioration degree.
    Type: Grant
    Filed: July 12, 2022
    Date of Patent: June 20, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seokha Hong, Joon-Chul Goh, Dongjoon Kwag, Jaesung Bae, Young-Soo Hwang
  • Publication number: 20230131968
    Abstract: A display device includes a display panel including sub-pixels arranged in an image display region of the display panel to display an image, a data driver that applies a data voltage to data lines, a scan signal driver that applies scan signals to scan signal lines, a data compensator that analyzes image data received from an outside to divide at least one deterioration region and deterioration peripheral regions, and compares and analyzes image data of the at least one deterioration region and the deterioration peripheral regions to compensate or modulate the image data of the at least one deterioration region, and a timing controller that controls the data driver and the scan signal driver to display compensation data including the compensated or modulated image data as an image.
    Type: Application
    Filed: August 4, 2022
    Publication date: April 27, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Dong Joon KWAG, Young Soo HWANG, Hyung Jin KIM
  • Publication number: 20230128265
    Abstract: A display device includes a degradation compensator, a controller, a data driver, and a display panel. The degradation compensator generates a first fitting function and a second fitting function based on image data, generates a compensation function through a harmonic mean of the first and second fitting functions, and generates a compensation value based on the compensation function. The controller receives the compensation value, and generates input image data to which the compensation value is applied. The data driver receives the input image data to which the compensation value is applied, and converts the input image data into a data voltage. The display panel includes pixels, in which each of the pixels includes a pixel circuit which receives the data voltage and a light-emitting element electrically connected to the pixel circuit.
    Type: Application
    Filed: August 31, 2022
    Publication date: April 27, 2023
    Inventors: YOUNG-SOO HWANG, JOON-CHUL GOH, DONGJOON KWAG, HYUNGJIN KIM, JI-EUN PARK, JAESUNG BAE, SEOKHA HONG