Patents by Inventor Kyoungho LIM

Kyoungho LIM 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: 10909941
    Abstract: A liquid crystal display device and a driving method of the liquid crystal display device includes a display panel including a plurality of gate lines, a plurality of data lines crossing the gate lines, and a plurality of pixels coupled to the gate lines and the data lines, a gate driver configured to provide a gate signal to the pixels through the gate lines, a data driver configured to provide a data signal to the pixels through the data lines and a timing controller configured to receive an image data provided from an external device and generate control signals that control the gate driver and the data driver. The timing controller analyzes a pattern of the image data by every frame, and changes an inversion driving method and gamma voltages of the image data based on a pattern analyzing result from the analysis of the pattern of the image data.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: February 2, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Taehyeong An, KyoungHo Lim, Soo-Yeon Lee, Jaehoon Lee, Nam-Gon Choi
  • Patent number: 10861360
    Abstract: A display device includes a pixel column including first to n-th pixels connected to a same data line and different gate lines from each other, a data driving chip which outputs a test data voltage in a test mode and outputs image data voltages in a normal mode, a sensing circuit which is electrically connected to the data line and the data driving chip in the test mode, senses a current output to the first pixel during a first period, and senses a current output to an i-th pixel during a second period, and a signal controller which compares a reference charge amount calculated based on the current sensed during the first period to a first charge amount calculated based on the current sensed during the second period and compensates for a level of an image data voltage applied to the i-th pixel among the image data voltages based on the compared result.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: December 8, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jaehoon Lee, Kyoungho Lim, Seokha Hong
  • Patent number: 10803812
    Abstract: A display device includes a display panel, a plurality of sensors, a signal control unit, and a backlight unit. A plurality of dimming regions is defined in the display panel. The signal control unit determines a plurality of representative luminance values corresponding to the plurality of dimming regions based on image data signals received from an external device and illuminance values of an external light measured by the plurality of sensors. The backlight unit provides lights having the representative luminance values to the display panel.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: October 13, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seokha Hong, Nam-gon Choi, Moonshik Kang, Jaehoon Lee, Kyoungho Lim
  • Patent number: 10803784
    Abstract: A display device includes a display panel including a plurality of pixels, the display panel including a first display area and a second display area, a first image processor which receives a first image data to be provided to the first display area, convert the first image data to a first convert data, and generate a first compensation data provided to the first display area using a first average filter, and a second image processor which receives a second image data to be provided to the second display area, converts the second image data to a second convert data, and generates a second compensation data provided to the second display area using a second average filter.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: October 13, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jinpil Kim, Gyusu Lee, Moonshik Kang, Jaesung Bae, Jaehoon Lee, Kyoungho Lim, Namjae Lim, Seokha Hong
  • Publication number: 20190206349
    Abstract: A liquid crystal display device and a driving method of the liquid crystal display device includes a display panel including a plurality of gate lines, a plurality of data lines crossing the gate lines, and a plurality of pixels coupled to the gate lines and the data lines, a gate driver configured to provide a gate signal to the pixels through the gate lines, a data driver configured to provide a data signal to the pixels through the data lines and a timing controller configured to receive an image data provided from an external device and generate control signals that control the gate driver and the data driver. The timing controller analyzes a pattern of the image data by every frame, and changes an inversion driving method and gamma voltages of the image data based on a pattern analyzing result from the analysis of the pattern of the image data.
    Type: Application
    Filed: December 28, 2018
    Publication date: July 4, 2019
    Inventors: Taehyeong AN, KyoungHo LIM, Soo-Yeon LEE, Jaehoon LEE, Nam-Gon CHOI
  • Publication number: 20190147792
    Abstract: A display device includes a display panel including a plurality of pixels, the display panel including a first display area and a second display area, a first image processor which receives a first image data to be provided to the first display area, convert the first image data to a first convert data, and generate a first compensation data provided to the first display area using a first average filter, and a second image processor which receives a second image data to be provided to the second display area, converts the second image data to a second convert data, and generates a second compensation data provided to the second display area using a second average filter.
    Type: Application
    Filed: November 8, 2018
    Publication date: May 16, 2019
    Inventors: Jinpil KIM, Gyusu LEE, Moonshik KANG, Jaesung BAE, Jaehoon LEE, Kyoungho LIM, Namjae LIM, Seokha HONG
  • Publication number: 20190073964
    Abstract: A display device includes a display panel, a plurality of sensors, a signal control unit, and a backlight unit. A plurality of dimming regions is defined in the display panel. The signal control unit determines a plurality of representative luminance values corresponding to the plurality of dimming regions based on image data signals received from an external device and illuminance values of an external light measured by the plurality of sensors. The backlight unit provides lights having the representative luminance values to the display panel.
    Type: Application
    Filed: September 4, 2018
    Publication date: March 7, 2019
    Inventors: Seokha HONG, Nam-gon CHOI, Moonshik KANG, Jaehoon LEE, Kyoungho LIM
  • Publication number: 20190057631
    Abstract: A display device includes a pixel column including first to n-th pixels connected to a same data line and different gate lines from each other, a data driving chip which outputs a test data voltage in a test mode and outputs image data voltages in a normal mode, a sensing circuit which is electrically connected to the data line and the data driving chip in the test mode, senses a current output to the first pixel during a first period, and senses a current output to an i-th pixel during a second period, and a signal controller which compares a reference charge amount calculated based on the current sensed during the first period to a first charge amount calculated based on the current sensed during the second period and compensates for a level of an image data voltage applied to the i-th pixel among the image data voltages based on the compared result.
    Type: Application
    Filed: August 8, 2018
    Publication date: February 21, 2019
    Inventors: Jaehoon Lee, Kyoungho Lim, Seokha Hong
  • Patent number: 9818327
    Abstract: A display device includes a display panel including sub-pixels, a first driver adjacent to a first side of the display panel to generate first signals, and a second driver adjacent to the first side to generate second signals. The display panel includes vertical lines including one ends disposed at the first side to apply the first signals to the sub-pixels, diagonal lines crossing the vertical lines to apply the second signals to the sub-pixels, and crossing lines crossing the vertical and diagonal lines. The diagonal lines include first diagonal lines including one ends at the first side and second diagonal lines including one ends at a second side adjacent to the first side. The crossing lines include one ends at the first side and the other ends at the second side. The crossing lines receive the second signals and apply the second signals to the second diagonal lines.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: November 14, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sooyeon Lee, Joon-Chul Goh, Jung-Taek Kim, Aram Song, KyoungHo Lim
  • Patent number: 9704449
    Abstract: The gate driving circuit includes an (m?1)-th stage externally receiving a first dummy signal for a first time period to control a turn-off, an m-th stage externally receiving a second dummy signal for the first time period to control the turn-off, an (m?2)-th stage receiving an m-th carry signal for a second time period from the m-th stage and externally receiving the second dummy signal for the second time period to control the turn-off, and an (m?3)-th stage receiving an (m?1)-th carry signal for the second time period from the (m?1)-th stage and externally receiving the first dummy signal for the first time period to control the turn-off, wherein the first time period is longer than the second time period.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: July 11, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se-Hyang Kim, Kyung-Hoon Kim, KyoungHo Lim, Kwang-chul Jung, Junki Jeong
  • Patent number: 9607581
    Abstract: Provided is a display device including: a display panel, a timing controller, a gate driver, and a data driver. The display panel includes a display area configured to display an image and a non-display area adjacent to one side of the display area. The display area includes oblique lines, intersectional lines crossing and isolated from at least a part of the oblique lines, and pixels. Pixels coupled to the oblique lines or the intersectional lines and arranged along a line in one direction are defined into pixel rows. The display area further includes a plurality of areas divided by the pixel rows being successive. The number of pixels constituting one of adjacent ones of the pixel rows in at least one of the plurality of areas is different from the number of pixels constituting another thereof.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: March 28, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Won Park, Joon-Chul Goh, Bonghyun You, KyoungHo Lim, Sangjin Jeon, Junki Jeong
  • Publication number: 20160210918
    Abstract: The gate driving circuit includes an (m?1)-th stage externally receiving a first dummy signal for a first time period to control a turn-off, an m-th stage externally receiving a second dummy signal for the first time period to control the turn-off, an (m?2)-th stage receiving an m-th carry signal for a second time period from the m-th stage and externally receiving the second dummy signal for the second time period to control the turn-off, and an (m?3)-th stage receiving an (m?1)-th carry signal for the second time period from the (m?1)-th stage and externally receiving the first dummy signal for the first time period to control the turn-off, wherein the first time period is longer than the second time period.
    Type: Application
    Filed: August 26, 2015
    Publication date: July 21, 2016
    Inventors: Se-Hyang KIM, Kyung-Hoon Kim, KyoungHo Lim, Kwang-chul Jung, Junki Jeong
  • Patent number: 9336702
    Abstract: A display apparatus includes an image data comparator which receives first, second and third color image data, extracts first, second and third image data from the first, second and third color image date by comparing gray scale values of the first, second and third color image date such that each of grayscale values of the second and third image data is greater than or equal to a gray scale value of the first image data, and compares the gray scale value of the first image data with a predetermined gray scale value, a driving circuit which generates a gray scale signal based on a result of the comparison and generates first and second color signals based on the first, second or third image data, and a pixel including a first sub-pixel which receives the gray scale signal, second and third sub-pixels which receive the first and second color signals, respectively.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: May 10, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sangil Kim, Jang-Kyum Kim, Myung-Eun Kim, Namseok Roh, Gilhwan Yeo, Yeun Tae Kim, KyoungHo Lim
  • Publication number: 20160117965
    Abstract: A display device includes a display panel including sub-pixels, a first driver adjacent to a first side of the display panel to generate first signals, and a second driver adjacent to the first side to generate second signals. The display panel includes vertical lines including one ends disposed at the first side to apply the first signals to the sub-pixels, diagonal lines crossing the vertical lines to apply the second signals to the sub-pixels, and crossing lines crossing the vertical and diagonal lines. The diagonal lines include first diagonal lines including one ends at the first side and second diagonal lines including one ends at a second side adjacent to the first side. The crossing lines include one ends at the first side and the other ends at the second side. The crossing lines receive the second signals and apply the second signals to the second diagonal lines.
    Type: Application
    Filed: June 15, 2015
    Publication date: April 28, 2016
    Inventors: Sooyeon LEE, Joon-Chul GOH, Jung-Taek KIM, Aram SONG, KyoungHo LIM
  • Patent number: 9324281
    Abstract: A display device includes a first gate driver that applies a gate-on voltage to gate lines of a first gate line group in each period of n first scan periods for a first frame, n being a natural number. A second gate driver applies a gate-on voltage to gate lines of a second gate line group in each period of n second scan periods for a first frame. A data driver applies a data voltage to a plurality of data lines. A signal controller transmits a control signal to the first and second gate drivers and the data driver, wherein an interval between start points of the n first scan periods is gradually decreased according to time, and an interval between start points of the n second scan periods is gradually increased according to time.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: April 26, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun-Sik Hwang, Uk-Chul Choi, Cheol-Woo Park, Jong-Hee Kim, KyoungHo Lim
  • Patent number: 9213213
    Abstract: A three-dimensional image display apparatus includes a display panel which receives light and displays an image, a liquid crystal lens panel which refracts the light exiting from the display panel, a lens driver which drives the liquid crystal lens panel, a timing controller which controls the lens driver, a power supply unit which provides the liquid crystal lens panel with a driving voltage in response to a control of the timing controller, and a driver data value storage unit which stores a driver data value and applies the driver data value stored therein to the lens driver when the data driver storage unit is turned on, where the lens driver operates the liquid crystal lens panel using the driving voltage and the driver data value in response to the control of the timing controller.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: December 15, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Cheolwoo Park, Joo-Young Kim, Jung-taek Kim, Geunjeong Park, KyoungHo Lim, Ji-woong Jeong
  • Publication number: 20150262554
    Abstract: Provided is a display device including: a display panel, a timing controller, a gate driver, and a data driver. The display panel includes a display area configured to display an image and a non-display area adjacent to one side of the display area. The display area includes oblique lines, intersectional lines crossing and isolated from at least a part of the oblique lines, and pixels. Pixels coupled to the oblique lines or the intersectional lines and arranged along a line in one direction are defined into pixel rows. The display area further includes a plurality of areas divided by the pixel rows being successive. The number of pixels constituting one of adjacent ones of the pixel rows in at least one of the plurality of areas is different from the number of pixels constituting another thereof.
    Type: Application
    Filed: September 11, 2014
    Publication date: September 17, 2015
    Inventors: Dong-Won Park, Joon-Chul Goh, Bonghyun You, KyoungHo Lim, Sangjin Jeon, Junki Jeong
  • Patent number: 8982117
    Abstract: A display apparatus includes a display panel configured to include a plurality of pixels and display an image having a plurality of viewpoints in response to a data signal and a control signal, a converter, and a driver. The converter is configured to receive a first image signal and a first control signal, the first image signal including an image data and a depth data corresponding to the image data and a first control signal, the converter further configured to generate a converted depth data corresponding to a predetermined pixel on the basis of the first image signal, and output a second image signal having the viewpoints and a second control signal based on the image data and the converted depth data. The driver is configured to receive the second image signal and the second control signal and output the data signal and the control signal to the display panel.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: March 17, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Cheolwoo Park, Joo-Young Kim, Mun-San Park, Jung-taek Kim, Geunjeong Park, KyoungHo Lim, Ji-woong Jeong
  • Patent number: 8970617
    Abstract: The display device includes a timing controller, a data driving unit, a gate driving unit, and a display panel. The timing controller divides m-bit image data (m is a natural number) received from the outside into n different image data for each viewpoint (n is 2 or larger natural number), and generates an output frame composed of a plurality of 3-dimensional image data including the n image data for each viewpoint. Then, the output frame is dithered so that the image data for each viewpoint expresses m-bit gradation with l bit, and image data for each viewpoint included in the output frame are outputted as output image signals.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: March 3, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: KyoungHo Lim, Jung-taek Kim, Joo-Young Kim, CheolWoo Park, Mun-San Park, KyoungWon Lee
  • Patent number: 8970474
    Abstract: A method for driving an electrophoresis display device includes applying a reset voltage having a first polarity to electrophoresis material of the display device for at least one frame period to display a reset image, applying a first gradation voltage having a second polarity opposite to the first polarity to the electrophoresis material for one frame period to display a first grey image after the reset image is displayed, applying a second gradation voltage having the second polarity to the electrophoresis material corresponding to at least one pixel region of the display device for at least two frame periods to display a second grey image, after the first grey image is displayed; and applying a third gradation voltage having the first polarity to the electrophoresis material corresponding to at least one pixel region for one frame period to display a third grey image, after the second grey image is displayed.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: March 3, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: KyoungHo Lim, Cheolwoo Park, Uk chul Choi, JongHee Kim, Hyun Sik Hwang