Patents by Inventor Ki Chun

Ki Chun 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: 20230419873
    Abstract: Provided is a display device comprising pixel circuits included in the display area, the pixel circuits including light emitting elements with grayscales corresponding to data input from the outside, a dummy pixel circuit included in the non-display area, the dummy pixel circuit including a dummy light emitting element and a dummy driving transistor, a sensing unit for inputting to the dummy pixel circuit, a test data signal for sensing an output signal corresponding to predetermined test data for each predetermined time, and then performing an operation of generating compensation information for compensating for degradation according to a driving time of at least one of the light emitting element and the driving transistor based on the output signal output from the dummy pixel circuit, and a timing controller for accumulating and storing the compensation information, and generating compensated data by compensating for the data input from the outside.
    Type: Application
    Filed: May 19, 2023
    Publication date: December 28, 2023
    Inventors: Byung Ki CHUN, Jae Hoon LEE, Tae Hyeong AN
  • Publication number: 20230410755
    Abstract: Provided is a display device comprising at least one sensing pixel including a sensing pixel circuit, a sensing unit including sensing circuit, and a temperature output unit to calculate a temperature of the display panel based on the sensing data. The sensing data is generated from a sensing pixel including a driving transistor in which a current generated according to temperature varies, and a temperature is measured from the sensing data.
    Type: Application
    Filed: March 22, 2023
    Publication date: December 21, 2023
    Inventors: Tae Hyeong AN, Jae Hoon LEE, Byung Ki CHUN
  • Patent number: 11842276
    Abstract: The display device includes a plurality of pixels, a data driver, and a timing controller. The plurality of pixels are connected to a plurality of scan lines and a plurality of data lines. The data driver supplies a data voltage to the plurality of data lines in a light-emitting mode and supplies a neural network input voltage to the plurality of data lines in an artificial neural network mode. The timing controller is in an artificial neural network mode, and supplies a weight value control signal for performing a deep learning operation by using at least one of the plurality of pixels to the data driver. The weight value control signal is generated based on a predetermined weight value.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: December 12, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Wook Yoo, Hyeon Min Kim, Jun Gyu Lee, Hyun Jun Lim, Byung Ki Chun
  • Patent number: 11842675
    Abstract: A display device includes a display panel including a plurality of pixels respectively connected to a plurality of data lines and a plurality of scan lines, a data driving circuit for driving the plurality of data lines, a scan driving circuit for driving the plurality of scan lines, and a driving controller for receiving a control signal and an image signal and controlling the data driving circuit and the scan driving circuit such that an image is displayed on the display panel. The driving controller identifies a first region and a second region of an image to be displayed on the display panel based on the image signal and provides the data driving circuit with an image data signal obtained by compensating for the image signal to be provided to pixels adjacent to the second region among pixels corresponding to the first region as a compensation value.
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: December 12, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong Won Lee, Byung Ki Chun, Joon-Chul Goh, Bonghyun You
  • Publication number: 20230384088
    Abstract: An apparatus and method for estimating a vehicle pitch relative to a road. The apparatus includes a wheel speed sensor part which obtains wheel speed data, an inertial measurement unit (IMU) sensor part which obtains IMU data, a preprocessing part which extracts a stop section and a moving section on the basis of the wheel speed data and the IMU data, and a slope estimation part which estimates a vehicle pitch in the stop section and a road slope in the moving section and estimates a vehicle pitch relative to a road on the basis of the vehicle pitch and the road slope.
    Type: Application
    Filed: November 18, 2022
    Publication date: November 30, 2023
    Applicants: HYUNDAI MOBIS CO., LTD., KONKUK UNIVERSITY INDUSTRIAL COOPERATION CORP.
    Inventors: In Sub MOON, Jong Hwa KIM, Kun Ho LEE, Ji Sung KANG, Ki Chun JO, Chan Soo KIM, Ji Won SEOK
  • Patent number: 11731649
    Abstract: A high precision position estimation method through a road shape classification-based map matching implemented by a high precision position estimation system of an autonomous vehicle includes classifying a road into a straight lane, a curved lane, and a clothoid curve lane by the lane matching between a sensor lane segment and a map lane segment, generating a movement amount value calculated by applying a geometric feature-based map matching or an optimization-based map matching to the classified lane as a covariance matrix, and calculating the latitude, longitude, and traveling direction of a vehicle to be estimated by combining the covariance matrix with sensor measurement values of a vehicle speed and a yaw rate by an extended Kalman filter.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: August 22, 2023
    Assignees: Hyundai Motor Company, Kia Corporation, Konkuk University Industrial Cooperation Corp
    Inventors: Dae-Sung Hwang, Cho-Rong Ryu, Ka-Min Kim, Ji-Min Jeong, Ki-Chun Jo, Sang-Kwon Kim
  • Patent number: 11682335
    Abstract: A display device includes a display panel, a memory, a dithering processor, and a panel driver. The display panel includes a display surface, and the memory stores dither patterns with respect to at least one spot area included in the display surface. The dithering processor selects a dither pattern among the dither patterns in a predetermined time unit and outputs a compensation image signal corresponding to the dither pattern. The panel driver outputs a data signal corresponding to the spot area based on the compensation image signal. Each of the dither patterns includes a first grayscale area having a first grayscale value higher than a first target grayscale value of the spot area and a second grayscale area having a second grayscale value lower than the first target grayscale value.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: June 20, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kuk-Hwan Ahn, Youngwook Yoo, Jungyu Lee, Hyunjun Lim, Byung Ki Chun
  • Patent number: 11657764
    Abstract: A display device includes pixels, an image converter generating second image data using first image data of an N-th frame and first image data of an (N+1)th frame; and a data driver supplying a data signal corresponding to the second image data to the pixels during an (N+1)th frame period. The image converter detects a logo and a logo area using the first image data, calculates a first representative value of data corresponding to a peripheral area of the logo area among the first image data of an N-th frame and a second representative value of data corresponding to a reference area among the first image data of the (N+1)th frame, and selectively converts data for the logo among the first image data of the (N+1)th frame according to the first representative value and the second representative value to generate the second image data of the (N+1)th frame.
    Type: Grant
    Filed: October 15, 2021
    Date of Patent: May 23, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Byung Ki Chun, Hyeon Min Kim, Young Wook Yoo, Jun Gyu Lee, Hyun Jun Lim
  • Publication number: 20230134326
    Abstract: A display device may include first pixels disposed in a display area and including respective first driving transistors. A second pixel is disposed in a non-display area and includes a second driving transistor. A sensor is configured to sense a current of the second pixel during a sensing period and generate sensing data. A degradation compensator is configured to convert first image data into second image data. A data driver is configured to generate data signals based on the second image data and supply the data signals to the first pixels. The degradation compensator calculates an age of the first pixels based on accumulating the second image data, converts the first image data into the second image data by deriving a compensation value from representative compensation data according to the age of the first pixels, and calibrates the representative compensation data based on the sensing data.
    Type: Application
    Filed: August 3, 2022
    Publication date: May 4, 2023
    Inventors: JAE HOON LEE, TETSUHIRO TANAKA, DAE SEOP KIM, CHEOL MIN KIM, BYUNG HYUK SHIN, HAI JUNG IN, BYUNG KI CHUN
  • Publication number: 20230135235
    Abstract: A display device may compensate for such changes in characteristics of light emitting elements and transistors in pixels of a display. For example, a driving circuit of a display device may update a lookup table that stores one or more compensation values. Each compensation value may correspond to a characteristic change of a pixel. In some embodiments, the characteristic change of a transistor may be determined based on a sensing signal received from a dummy pixel. Accordingly, a display device may generate a compensation signal based on an actual characteristic change of the transistor in the pixel. The compensation signal may be used by the display device to compensate for pixel characteristic changes that occur over time. For instance, a display device may use such compensation signals to correct input signals (e.g., to generate a corrected output signal) to be applied to one or more pixels of a display.
    Type: Application
    Filed: October 11, 2022
    Publication date: May 4, 2023
    Inventors: JAEHOON LEE, DAE-SEOP KIM, CHEOLMIN KIM, BYUNG KI CHUN
  • Publication number: 20230115199
    Abstract: A display device includes a display panel, a controller, and a data driver. The display panel includes a plurality of pixels. The controller is configured to: receive input image data for the display panel; divide the display panel into a plurality of first pixel blocks each having a first size; divide the display panel into a plurality of second pixel blocks each having a second size different from the first size; generate, based on the input image data, a first stress map for the plurality of first pixel blocks and a second stress map for the plurality of second pixel blocks; and generate output image data by compensating the input image data based on the first stress map and the second stress map. The data driver is configured to provide data voltages to the plurality of pixels based on the output image data.
    Type: Application
    Filed: September 21, 2022
    Publication date: April 13, 2023
    Inventors: BYUNG KI CHUN, HYEONMIN KIM, YONGSEOK CHOI
  • Patent number: 11594164
    Abstract: A display device includes: a display panel including first and second display areas adjacent to each other; and first and second data drivers configured to drive the first and second display areas, respectively, wherein the first data driver includes: a first afterimage detector configured to receive an input image and to detect a first afterimage area including an afterimage of the first display area from the input image; a first comparator configured to compare an afterimage detection result of the first display area with an afterimage detection result of the second display area received from the second data driver; and a first coordinate corrector configured to correct coordinates of the first afterimage area in response to the afterimage detection result of the first display area and the afterimage detection result of the second display area satisfying a preset reference.
    Type: Grant
    Filed: October 28, 2021
    Date of Patent: February 28, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Jun Lim, Hyeon Min Kim, Young Wook Yoo, Jun Gyu Lee, Byung Ki Chun
  • Patent number: 11578243
    Abstract: The present application relates to a cross-linkable composition. The present application can provide a cross-linkable composition without degradation of cross-linking efficiency while exhibiting conductivity by containing an ionic compound, and its use.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: February 14, 2023
    Inventors: Sang Ki Chun, Yu Ra Lee
  • Patent number: 11568774
    Abstract: There is provided a method of displaying an image on a display device, the method including moving an image displayed at an image display region of the display device, and reducing a first region and enlarging a second region, the first and second regions included in the image, wherein the image has a smaller size than the image display region.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: January 31, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byung Ki Chun, Jin Woo Noh, Jun Gyu Lee
  • Publication number: 20230005417
    Abstract: A display device includes a display panel including a plurality of pixels respectively connected to a plurality of data lines and a plurality of scan lines, a data driving circuit for driving the plurality of data lines, a scan driving circuit for driving the plurality of scan lines, and a driving controller for receiving a control signal and an image signal and controlling the data driving circuit and the scan driving circuit such that an image is displayed on the display panel. The driving controller identifies a first region and a second region of an image to be displayed on the display panel based on the image signal and provides the data driving circuit with an image data signal obtained by compensating for the image signal to be provided to pixels adjacent to the second region among pixels corresponding to the first region as a compensation value.
    Type: Application
    Filed: April 27, 2022
    Publication date: January 5, 2023
    Inventors: DONG WON LEE, Byung Ki Chun, Joon-Chul Goh, Bonghyun You
  • Patent number: 11545060
    Abstract: A display device includes: a plurality of pixels; a first pixel unit comprising a first portion of the plurality of pixels; a second pixel unit comprising a second portion of the plurality of pixels; and a data driver configured to supply a data voltage to the first pixel unit and the second pixel unit, wherein the data driver is configured to generate a data voltage to be supplied to the first pixel unit based on different gamma voltages even when the same grayscale is expressed according to a driving method, and the second pixel unit is configured to be driven or not driven according to the driving method.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: January 3, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soon Dong Kim, Joon Chul Goh, Bong Hyun You, Byung Ki Chun, Seong Heon Cho
  • Patent number: 11514843
    Abstract: A display device includes: pixels arranged in a display area; a timing controller which generates image data of each frame based on an input image signal of the each frame, the timing controller including a logo controller which detects a logo image and a logo area including the logo image from the input image signal of the each frame to control luminance of the logo image; and a data driver which generates a data signal based on the image data and supplies the data signal to the pixels. The logo controller generates a first logo map based on an input image signal of a previous frame, generates a second logo map based on an input image signal of a current frame, and determines a similarity between the first logo map and the second logo map to selectively change luminance of a logo image of a next frame.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: November 29, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyeon Min Kim, Hyun Jun Lim, Young Wook Yoo, Jun Gyu Lee, Byung Ki Chun
  • Patent number: 11508288
    Abstract: A display device includes pixels; an image converter which generates a second image by correcting grayscales of a logo among a first image for the pixels; and a data driver which provides data voltages corresponding to the second image to the pixels. The image converter generates first accumulated data by accumulating first map data corresponding to a logo area larger than the logo among the first image during a plurality of frame periods, generates second accumulated data by scaling the first accumulated data every refresh cycle, generates third accumulated data by initializing values smaller than a first threshold value among the second accumulated data to be a background value, and specifies pixels corresponding to the logo based on second map data corresponding to the third accumulated data.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: November 22, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Byung Ki Chun, Hyeon Min Kim, Young Wook Yoo, Jun Gyu Lee, Hyun Jun Lim
  • Publication number: 20220308255
    Abstract: A device for evaluating characteristics of a target ground containing a metal component is proposed. The device includes: a penetration probe having a main frame and a pair of side frames respectively installed at opposite side ends of the main frame, wherein each side frame has a lower end thereof extending downward from the main frame; a plurality of electrodes installed to be exposed to outside on the main frame; an electrode measurement part for measuring apparent chargeability of the target ground by applying power for measurement to the plurality of electrodes; and a main processor for calculating a weight ratio of a metal component of the target ground on the basis of the apparent chargeability measured by the electrode measurement part and calculating a volume ratio of the metal component of the target ground on the basis of the calculated weight ratio of the metal component.
    Type: Application
    Filed: October 26, 2020
    Publication date: September 29, 2022
    Inventors: Jong-Sub LEE, Sang-Yeob KIM, Nam-Sun KIM, Joon-Ki CHUN
  • Patent number: 11443502
    Abstract: An object detection post-processing device of a display device, includes: an input to receive position information of an object that is detected from input image data for the display device in a current frame; a position information storage device to accumulatively store the position information of a plurality of previous frames; an accumulated position calculator to generate accumulated position information according to the position information of the current frame and the position information of the plurality of previous frames; and a position information determiner to determine final position information according to the accumulated position information, and to output the final position information.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: September 13, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun Gyu Lee, Hyeon Min Kim, Kuk-Hwan Ahn, Young Wook Yoo, Hyun Jun Lim, Byung Ki Chun