Patents by Inventor Eun-Jin Choi

Eun-Jin Choi 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: 20220366831
    Abstract: A display device includes a plurality of pixels grouped into blocks divided into block rows extending in a first direction and arranged in a second direction, wherein each block includes two or more pixels connected to a first power source line, and each pixel is assigned with a grayscale value in a range of grayscale values that is divided into a plurality of grayscale sections; and a first power source voltage adjuster selecting a reference block row, and determining a magnitude of a first power source voltage supplied to the first power source line based on a number of blocks in the reference block row having a grayscale section that is same as a maximum grayscale section of the reference block row. The maximum grayscale section corresponds to a grayscale section that includes a largest grayscale value having a grayscale value ratio greater than a minimum ratio.
    Type: Application
    Filed: July 29, 2022
    Publication date: November 17, 2022
    Inventors: Ki Hyun PYUN, Won Jin SEO, Eun Jin CHOI
  • Patent number: 11488562
    Abstract: A display device comprises a display area including a plurality of pixels, a peak driving determination part determining peak driving based on an input image signal, a normal driving compensation part including a first luminance lookup table having a first luminance as a peak luminance, a peak driving compensation part including a second luminance lookup table having a second luminance higher than the first luminance as a peak luminance, a compensation adjusting part that generates a peak driving gamma curve by smoothing a first and second luminance gamma curves corresponding to the first and second luminance lookup tables and generates a peak driving lookup table according to the peak driving gamma curve, and a signal controller generating an image data signal by applying one normal driving lookup table to a portion of the display area and applying the peak driving lookup table to an other portion of the display area.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: November 1, 2022
    Inventors: Ki Hyun Pyun, Eun Jin Choi
  • Patent number: 11482164
    Abstract: A display device includes a pixel unit including pixels, a compensator which generate compensation image data by scaling grayscale values of input image data based on temperature data corresponding to an ambient temperature of the pixel unit, a timing controller which generates image data based on the compensation image data, and a data driver which generates a data signal corresponding to the image data and supply the data signal to the pixels. The compensator scales the grayscale values of the input image data in a way such that the grayscale values of the input image data decrease when the ambient temperature is greater than a reference temperature. The compensator scales the grayscale values of the input image data in a way such that the grayscale values of the input image data increase when the ambient temperature is less than the reference temperature.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: October 25, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Eun Jin Choi, Won Jin Seo, Ki Hyun Pyun
  • Publication number: 20220277707
    Abstract: Provided herein may be a display device. The display device may include a display panel including a plurality of unit blocks disposed in a display area, the plurality of unit blocks including a first area displaying a logo or a banner, a second area having largest load value and a third area disposed between the first area and the second area, a display panel driver configured to generate data voltages based on input image data, and a zonal compensator configured to receive the input image data , to calculate load values of the input image data for the plurality of unit blocks, respectively, and to control luminance of each of the first area and the third area based on a location difference between the first area and the second area and a load value difference between the first area and the second area.
    Type: Application
    Filed: May 16, 2022
    Publication date: September 1, 2022
    Inventors: Eun Jin CHOI, Won Jin SEO, Ki Hyun PYUN
  • Publication number: 20220277687
    Abstract: A display device includes a pixel unit including pixels, a timing controller configured to generate image data based on input image data, a data driver configured to generate a data signal corresponding to the image data and supply the data signal to the pixels, a power supply configured to supply a power voltage to the pixel unit, and a power controller configured to calculate a load value and a peak grayscale value based on the input image data, and to generate a power control signal to change a voltage level of the power voltage based on the load value and the peak grayscale value.
    Type: Application
    Filed: May 13, 2022
    Publication date: September 1, 2022
    Inventors: Ki Hyun PYUN, Jang Mi LEE, Eun Jin CHOI
  • Publication number: 20220262327
    Abstract: A display device includes a display panel including a plurality of pixels, a display panel driver, and a zone compensating circuit which divides the display panel into a plurality of unit blocks, obtains load values of input image data for the unit blocks, and generates corrected image data by correcting the input image data based on the load values. Each of the load values corresponds to one of the unit blocks. The display panel driver generates a data signal for displaying an image on the display panel based on the corrected image data. When grayscale values included in the input image data are the same, a luminance of the image displayed on the display panel is decreased moving away from a center of a reference block having a largest load value among the unit blocks based on the corrected image data.
    Type: Application
    Filed: May 9, 2022
    Publication date: August 18, 2022
    Inventors: Eun Jin Choi, Ki Hyun Pyun, Sung In Kang
  • Patent number: 11415999
    Abstract: A traveling control system of an autonomous vehicle includes a 2D LIDAR sensor, a wheel speed sensor for detecting a speed of the vehicle, a yaw rate sensor for detecting a rotational angular speed of the vehicle, and an error corrector for determining a straight-line situation using a LIDAR point detected by the 2D LIDAR sensor, extracting a straight lateral distance value according to the result of determination, accumulating the LIDAR point according to the trajectory of traveling of the vehicle detected by the wheel speed sensor and the yaw rate sensor, estimating an error between the accumulated point and the extracted straight line, and calculating and feeding back an offset correction parameter of the yaw rate sensor when the estimated error value is greater than a predetermined threshold value to automatically correct an error parameter of the yaw rate sensor.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: August 16, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Kang Hoon Lee, Eun Jin Choi, Ji Un Kim, Hae Ryong Lee, Young Chul Oh, Ki Cheol Shin
  • Patent number: 11403989
    Abstract: A display device includes a plurality of pixels grouped into blocks divided into block rows extending in a first direction and arranged in a second direction, wherein each block includes two or more pixels connected to a first power source line, and each pixel is assigned with a grayscale value in a range of grayscale values that is divided into a plurality of grayscale sections; and a first power source voltage adjuster selecting a reference block row, and determining a magnitude of a first power source voltage supplied to the first power source line based on a number of blocks in the reference block row having a grayscale section that is same as a maximum grayscale section of the reference block row. The maximum grayscale section corresponds to a grayscale section that includes a largest grayscale value having a grayscale value ratio greater than a minimum ratio.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: August 2, 2022
    Inventors: Ki Hyun Pyun, Won Jin Seo, Eun Jin Choi
  • Publication number: 20220230578
    Abstract: A display device includes: a pixel unit including pixels connected to data lines and scan lines, and signal output lines, where at least one signal output line of the signal output lines is connected to each of the scan lines through a contact point; a data driver disposed at one side of the pixel unit to drive the data lines; a scan driver disposed at the one side of the pixel unit together with the data driver to drive the scan lines; and a timing controller controlling the data driver and the scan driver. The data driver includes: output buffers outputting data signals to the data lines, respectively; and a slew rate controller adjusting a slew rate of the data signals by controlling a bias value supplied to the output buffers in units of pixel rows based on positions of the pixels and a change in the data signals.
    Type: Application
    Filed: April 11, 2022
    Publication date: July 21, 2022
    Inventors: Ki Hyun Pyun, Min Young Park, Eun Jin Choi
  • Patent number: 11393374
    Abstract: A display device and a method of driving the same are provided. The display device according to an embodiment includes a plurality of pixel rows, a data driver configured to provide first data voltages which correspond to first line grayscale data to pixels disposed in an (N?1)-th pixel row, provide second data voltages which correspond to second line grayscale data to pixels disposed in an N-th pixel row, and provide third data voltages which correspond to third line grayscale data to pixels disposed in an (N+1)-th pixel row, and a data compensator configured to compensate for the second line grayscale data by using one of a first compensation and a second compensation based on the first line grayscale data, the second line grayscale data, and the third line grayscale data.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: July 19, 2022
    Inventors: Won Jin Seo, Eun Jin Choi, Ki Hyun Pyun
  • Patent number: 11361731
    Abstract: Provided herein may be a display device. The display device may include a display panel including a plurality of unit blocks disposed in a display area, the plurality of unit blocks including a first area displaying a logo or a banner, a second area having largest load value and a third area disposed between the first area and the second area, a display panel driver configured to generate data voltages based on input image data, and a zonal compensator configured to receive the input image data, to calculate load values of the input image data for the plurality of unit blocks, respectively, and to control luminance of each of the first area and the third area based on a location difference between the first area and the second area and a load value difference between the first area and the second area.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: June 14, 2022
    Inventors: Eun Jin Choi, Won Jin Seo, Ki Hyun Pyun
  • Patent number: 11361709
    Abstract: A display device includes pixels divided into blocks, a timing controller to generate image data based on input image data, a data driver to generate a data signal corresponding to the image data and supply the data signal to the pixels, and power supply to supply a power voltage to the pixels. In addition, the display device includes a power controller to calculate a first load value corresponding to the pixels, second load values corresponding to each of the blocks, and first peak grayscale values corresponding to each of the blocks based on the input image data. The power controller generates a power control signal to change a voltage level of the power voltage based on the first load value, the second load values, and the first peak grayscale values.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: June 14, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ki Hyun Pyun, Jang Mi Lee, Eun Jin Choi
  • Patent number: 11341932
    Abstract: A display device includes a display panel including a plurality of pixels, a display panel driver, and a zone compensating circuit which divides the display panel into a plurality of unit blocks, obtains load values of input image data for the unit blocks, and generates corrected image data by correcting the input image data based on the load values. Each of the load values corresponds to one of the unit blocks. The display panel driver generates a data signal for displaying an image on the display panel based on the corrected image data. When grayscale values included in the input image data are the same, a luminance of the image displayed on the display panel is decreased moving away from a center of a reference block having a largest load value among the unit blocks based on the corrected image data.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: May 24, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Eun Jin Choi, Ki Hyun Pyun, Sung In Kang
  • Publication number: 20220157225
    Abstract: A display device includes a pixel unit including pixels, a compensator which generate compensation image data by scaling grayscale values of input image data based on temperature data corresponding to an ambient temperature of the pixel unit, a timing controller which generates image data based on the compensation image data, and a data driver which generates a data signal corresponding to the image data and supply the data signal to the pixels. The compensator scales the grayscale values of the input image data in a way such that the grayscale values of the input image data decrease when the ambient temperature is greater than a reference temperature. The compensator scales the grayscale values of the input image data in a way such that the grayscale values of the input image data increase when the ambient temperature is less than the reference temperature.
    Type: Application
    Filed: August 27, 2021
    Publication date: May 19, 2022
    Inventors: Eun Jin CHOI, Won Jin SEO, Ki Hyun PYUN
  • Publication number: 20220157224
    Abstract: A display device includes pixels divided into blocks, a timing controller to generate image data based on input image data, a data driver to generate a data signal corresponding to the image data and supply the data signal to the pixels, and power supply to supply a power voltage to the pixels. In addition, the display device includes a power controller to calculate a first load value corresponding to the pixels, second load values corresponding to each of the blocks, and first peak grayscale values corresponding to each of the blocks based on the input image data. The power controller generates a power control signal to change a voltage level of the power voltage based on the first load value, the second load values, and the first peak grayscale values.
    Type: Application
    Filed: August 24, 2021
    Publication date: May 19, 2022
    Inventors: Ki Hyun PYUN, Jang Mi LEE, Eun Jin CHOI
  • Publication number: 20220148479
    Abstract: A display device including: a display area including pixels connected to data lines and scan lines, the display area including a plurality of signal output lines connected to each of the scan lines through a contact; a data driver including a first data driving circuit at a side of the display area; a scan driver disposed at the side of the display area; and a timing controller, wherein the first data driving circuit includes: output buffers which respectively output data signals to first to k-th data lines (k is an integer greater than 2) of the data lines; and an output delay controller which transmits the data signals to the output buffers through first to k-th transmission lines, and controls delay times of the data signals output to the first to k-th transmission lines based on position information of a pixel row to which the data signals are supplied.
    Type: Application
    Filed: June 21, 2021
    Publication date: May 12, 2022
    Inventors: Ki Hyun PYUN, Jang Mi LEE, Eun Jin CHOI
  • Patent number: 11302236
    Abstract: A display device includes: a pixel unit including pixels connected to data lines and scan lines, and signal output lines, where at least one signal output line of the signal output lines is connected to each of the scan lines through a contact point; a data driver disposed at one side of the pixel unit to drive the data lines; a scan driver disposed at the one side of the pixel unit together with the data driver to drive the scan lines; and a timing controller controlling the data driver and the scan driver. The data driver includes: output buffers outputting data signals to the data lines, respectively; and a slew rate controller adjusting a slew rate of the data signals by controlling a bias value supplied to the output buffers in units of pixel rows based on positions of the pixels and a change in the data signals.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: April 12, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ki Hyun Pyun, Min Young Park, Eun Jin Choi
  • Patent number: 11283449
    Abstract: An interface system including: a receiver; a transmitter configured to transmit a signal including a common mode voltage to the receiver through transmission lines; and a plurality of bias circuits configured to adjust the common mode voltage of the signal, wherein the bias circuits are configured to receive a bias control bit to generate a biased common mode voltage.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: March 22, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki Hyun Pyun, Won Jin Seo, Eun Jin Choi
  • Publication number: 20220084453
    Abstract: A display device includes: a pixel unit including pixels connected to data lines and scan lines, and signal output lines, where at least one signal output line of the signal output lines is connected to each of the scan lines through a contact point; a data driver disposed at one side of the pixel unit to drive the data lines; a scan driver disposed at the one side of the pixel unit together with the data driver to drive the scan lines; and a timing controller controlling the data driver and the scan driver. The data driver includes: output buffers outputting data signals to the data lines, respectively; and a slew rate controller adjusting a slew rate of the data signals by controlling a bias value supplied to the output buffers in units of pixel rows based on positions of the pixels and a change in the data signals.
    Type: Application
    Filed: April 20, 2021
    Publication date: March 17, 2022
    Inventors: Ki Hyun PYUN, Min Young PARK, Eun Jin CHOI
  • Patent number: 11222576
    Abstract: A display device and a method for driving the same are described. The display device includes a plurality of pixels, a driving characteristic compensator for sensing driving characteristics of the pixels, generating first power source voltage information according to a change in the driving characteristics, and updating an RGB gamma look up table, a memory for storing the first power source voltage information and the RGB gamma look-up table, a power source manager for generating a first power source voltage based on the first power source voltage information, and a gamma controller for generating reference gamma voltages by dividing the first power source voltage supplied from the power source manager based on the RGB gamma look-up table. Therefore, power consumption of the display device may be reduced.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: January 11, 2022
    Inventors: Ki Hyun Pyun, Eun Jin Choi