Patents by Inventor Jin-Wook Yang

Jin-Wook Yang 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: 11017728
    Abstract: A display device includes: first and second dots arranged on a first horizontal line in a first direction, each of the first and second dots including first to fourth pixels; a switch unit configured to selectively couple first to fourth output lines respectively to the first to fourth pixels of each of the first and second dots, in response to a first control signal and a second control signal; and a data driver configured to supply data voltages to the first to fourth output lines in a time-sharing manner. The data driver may include: a data processor configured to generate data signals corresponding to the first to fourth output lines; and first to fourth digital-to-analog converters (DACs) configured to convert the data signals into the data voltages. Each of the first to fourth DACs may be supplied with a corresponding one of first to fourth gamma voltages.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: May 25, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Eun Gyeong Choe, Jin Wook Yang
  • Patent number: 11004400
    Abstract: A display device includes a display panel including a plurality of pixels, a gray group data generator configured to receive current line data for pixels in a current row, and to generate current row gray group data based on the current line data, a horizontal crosstalk determiner configured to determine whether horizontal crosstalk occurs in the current row, a horizontal crosstalk compensator configured to compare the current row gray group data with adjacent row gray group data when the horizontal crosstalk is determined to occur in the current row, and to selectively adjust a plurality of gamma reference voltages according to a result of the comparison between the current row gray group data and the adjacent row gray group data, and a data driver configured to generate and provide data voltages corresponding to the current line data based on the selectively adjusted plurality of gamma reference voltages.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: May 11, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Changnoh Yoon, Soon-Dong Kim, Jin-Wook Yang
  • Publication number: 20210074216
    Abstract: A display apparatus includes a display panel, a data driver, and a power voltage generator. The display panel includes a plurality of pixels and configured to display an image. The data driver is configured to apply a data voltage to the display panel. The power voltage generator is configured to provide a power voltage and an initialization voltage to the display panel. The power voltage generator is configured to receive a feedback initialization voltage from the display panel and configured to compensate the initialization voltage based on the feedback initialization voltage.
    Type: Application
    Filed: July 13, 2020
    Publication date: March 11, 2021
    Inventors: Wontae KIM, Bong-Hyun YOU, Sun-Koo KANG, Joon Chul GOH, Soon-Dong KIM, Jin-Wook YANG, Ki Hong SONG
  • Publication number: 20210074225
    Abstract: An organic light emitting display device includes: a display panel including a plurality of pixel rows each including first pixel groups alternating with second pixel groups; a gate driver configured to provide a first group gate signal to the first pixel groups, and to provide a second group gate signal to the second pixel groups; a data driver configured to output data voltages to a plurality of output line groups; and a connection controller configured to connect the output line groups to a first data line group in response to a first connection control signal, and to connect the output line groups to a second data line group in response to a second connection control signal.
    Type: Application
    Filed: November 16, 2020
    Publication date: March 11, 2021
    Inventors: Changnoh YOON, Jin-Wook YANG
  • Publication number: 20210065628
    Abstract: A display device driving method includes: providing a reference voltage for compensating a threshold voltage of a driving transistor in a pixel; and providing a data signal to the pixel, wherein providing the reference voltage, and providing the data signal to the pixel are performed in a first frame period, and a second frame period successive to the first frame period, wherein the display device driving method further comprises providing a compensation signal generated by comparing a data signal with a reference voltage provided in a previous frame period of each frame period to the pixel before providing the reference voltage is ended.
    Type: Application
    Filed: June 2, 2020
    Publication date: March 4, 2021
    Inventors: Yu Chol KIM, Jin Wook YANG, Ji Hye KIM, Young Ha SOHN, Jae Hyeon JEON
  • Publication number: 20210065619
    Abstract: An embodiment provides a display device including: a light emitting diode; a driving transistor configured to supply a current to the light emitting diode; a switching transistor having an input electrode connected to a data line; and a voltage transmitting capacitor disposed between an output electrode of the switching transistor and a gate electrode of the driving transistor, wherein a data voltage applied to the data line may be transmitted to the gate electrode of the driving transistor through the voltage transmitting capacitor, and the data voltage may have a data voltage value from which a voltage variation variable is removed based on leakage of the switching transistor.
    Type: Application
    Filed: June 16, 2020
    Publication date: March 4, 2021
    Inventors: Yu-Chol KIM, Jin-Wook YANG, Ji Hye KIM, Young Ha SOHN, Jae-Hyeon JEON
  • Publication number: 20210065620
    Abstract: The present disclosure relates to a display device and a method of driving the same. The display device includes a substrate, a display panel including a first display area including first pixels, a second display area including second pixels, and a third display area disposed between the first and second display areas and including third pixels, and a component disposed between the substrate and the display panel so as to overlap the second display area. Transmittance of the second display area is higher than transmittance of the first display area and transmittance of the third display area, and the third pixels are controlled such that a luminance gradually changes according to a distance from the second display area.
    Type: Application
    Filed: August 24, 2020
    Publication date: March 4, 2021
    Inventors: Jin Wook YANG, Yu Chol KIM, Ji Hye KIM, Young Ha SOHN, Jae Hyeon JEON
  • Publication number: 20210049965
    Abstract: A display device includes: a plurality of pixels, where each of the pixels includes a light emitting device and a pixel circuit coupled to the light emitting device; a scan driver which supplies a scan signal to the pixel circuit; a data driver which supplies a data signal to the pixel circuit; a power supply which supplies a voltage to the pixel circuit; a timing controller which controls the scan driver; a first signal generator which provides a first clock signal to the timing controller; and a second signal generator which provides a second clock signal to the timing controller.
    Type: Application
    Filed: July 30, 2020
    Publication date: February 18, 2021
    Inventors: Jae Hyeon JEON, Joon Chul GOH, Jin Wook YANG, Ki Hong SONG
  • Patent number: 10867560
    Abstract: An organic light emitting display device includes: a display panel including a plurality of pixel rows each including first pixel groups alternating with second pixel groups; a gate driver configured to provide a first group gate signal to the first pixel groups, and to provide a second group gate signal to the second pixel groups; a data driver configured to output data voltages to a plurality of output line groups; and a connection controller configured to connect the output line groups to a first data line group in response to a first connection control signal, and to connect the output line groups to a second data line group in response to a second connection control signal.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: December 15, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Changnoh Yoon, Jin-Wook Yang
  • Publication number: 20200372845
    Abstract: A flexible display panel includes a first display area adjacent to a first end portion of the flexible display panel and a second display area adjacent to a second end portion of the flexible display panel. The flexible display panel is scanned from the first end portion of the flexible display panel to the second end portion of the flexible display panel in a first mode. In a second mode, the flexible display panel is concurrently scanned from the first end portion of the flexible display panel to a central portion of the flexible display panel and from the second end portion of the flexible display panel to the central portion of the flexible display panel.
    Type: Application
    Filed: February 24, 2020
    Publication date: November 26, 2020
    Inventors: Wontae KIM, Jihye KIM, Jin-Wook YANG
  • Publication number: 20200365090
    Abstract: A display device includes a display panel including a plurality of pixels, a gray group data generator configured to receive current line data for pixels in a current row, and to generate current row gray group data based on the current line data, a horizontal crosstalk determiner configured to determine whether horizontal crosstalk occurs in the current row, a horizontal crosstalk compensator configured to compare the current row gray group data with adjacent row gray group data when the horizontal crosstalk is determined to occur in the current row, and to selectively adjust a plurality of gamma reference voltages according to a result of the comparison between the current row gray group data and the adjacent row gray group data, and a data driver configured to generate and provide data voltages corresponding to the current line data based on the selectively adjusted plurality of gamma reference voltages.
    Type: Application
    Filed: January 17, 2020
    Publication date: November 19, 2020
    Inventors: Changnoh YOON, Soon-Dong KIM, Jin-Wook YANG
  • Publication number: 20200365085
    Abstract: A display device includes a display unit including a first pixel, a second pixel disposed adjacent to the first pixel in a first direction, a third pixel disposed adjacent to the first pixel in a second direction crossing the first direction, and a fourth pixel disposed adjacent to the third pixel in the first direction. Each of the first to fourth pixels includes a first sub-pixel and a second sub-pixel. The display device further includes a data driver that outputs a plurality of data voltages, a selective output unit that outputs the data voltages to the first to fourth pixels in a different order for each of a plurality of frames, and a scan driver that outputs a first scan signal to the first and second pixels and outputs a second scan signal, which is delayed from the first scan signal, to the third and fourth pixels.
    Type: Application
    Filed: February 20, 2020
    Publication date: November 19, 2020
    Inventors: Jin-Wook YANG, Soon-Dong KIM, Changnoh YOON
  • Publication number: 20200273408
    Abstract: Example embodiments of the present disclosure provide a display device including: a plurality of pixels; a first scan gate line and a second scan gate line configured to transfer scan signals to a first pixel row of the pixels; a plurality of first gate bridges connected with the first scan gate line to transfer the scan signals to a plurality of first pixels at the first pixel row; a plurality of second gate bridges connected with the second scan gate line to transfer the scan signals to a plurality of second pixels at the first pixel row; a plurality of first data lines configured to supply a plurality of data voltages corresponding to the first pixels; and a plurality of second data lines configured to supply a plurality of data voltages corresponding to the second pixels, wherein two of the first data lines are positioned between two first pixels corresponding thereto, and two of the second data lines are positioned between two second pixels corresponding thereto.
    Type: Application
    Filed: May 11, 2020
    Publication date: August 27, 2020
    Inventors: Soon-Dong KIM, Il-Joo KIM, Jun Ki JEONG, Jin-Wook YANG, Gyung Soon PARK
  • Patent number: 10679551
    Abstract: An organic light emitting display device includes a display panel including pixel groups, each including a plurality of sub-pixels for each of pixel rows. A gate driver is configured to sequentially provide an initialization signal to the pixel rows, to provide a first group gate signal to first pixel groups of the pixel groups, to provide a second group gate signal overlapping at least a part of the first group gate signal to second pixel groups of the pixel groups, to sequentially provide the first group gate signal to the pixel rows, and to sequentially provide the second group gate signal to the pixel rows. An emission control driver is configured to sequentially provide an emission control signal to the pixel rows. A data driver is configured to output a data voltage. A data divider is configured to selectively provide the data voltage to data lines connected to the sub-pixels.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: June 9, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Wook Yang, Soon-Dong Kim
  • Patent number: 10650748
    Abstract: Example embodiments of the present disclosure provide a display device including: a plurality of pixels; a first scan gate line and a second scan gate line configured to transfer scan signals to a first pixel row of the pixels; a plurality of first gate bridges connected with the first scan gate line to transfer the scan signals to a plurality of first pixels at the first pixel row; a plurality of second gate bridges connected with the second scan gate line to transfer the scan signals to a plurality of second pixels at the first pixel row; a plurality of first data lines configured to supply a plurality of data voltages corresponding to the first pixels; and a plurality of second data lines configured to supply a plurality of data voltages corresponding to the second pixels, wherein two of the first data lines are positioned between two first pixels corresponding thereto, and two of the second data lines are positioned between two second pixels corresponding thereto.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: May 12, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soon-Dong Kim, Il-Joo Kim, Jun Ki Jeong, Jin-Wook Yang, Gyung Soon Park
  • Publication number: 20200111420
    Abstract: A display device includes pixels sequentially arranged along a first direction, a data driver having output lines and generating data signals, data lines each including sub-data lines extended along the first direction, demultiplexers each connecting a corresponding output line of the output lines to a corresponding data line of the data lines and switching the corresponding output line to one of the sub-data lines one at a time so that each of the data signals is supplied to a corresponding pixel of the pixels.
    Type: Application
    Filed: August 13, 2019
    Publication date: April 9, 2020
    Inventors: Jin Wook YANG, Soon Dong KIM, Chang Noh YOON, Eun Gyeong CHOE
  • Publication number: 20200105204
    Abstract: A display device includes: first and second dots arranged on a first horizontal line in a first direction, each of the first and second dots including first to fourth pixels; a switch unit configured to selectively couple first to fourth output lines respectively to the first to fourth pixels of each of the first and second dots, in response to a first control signal and a second control signal; and a data driver configured to supply data voltages to the first to fourth output lines in a time-sharing manner. The data driver may include: a data processor configured to generate data signals corresponding to the first to fourth output lines; and first to fourth digital-to-analog converters (DACs) configured to convert the data signals into the data voltages. Each of the first to fourth DACs may be supplied with a corresponding one of first to fourth gamma voltages.
    Type: Application
    Filed: August 13, 2019
    Publication date: April 2, 2020
    Inventors: Eun Gyeong CHOE, Jin Wook YANG
  • Patent number: 10325558
    Abstract: A display apparatus includes a data processor generating gamma data. The data processor sequentially selects each of a plurality of pixels as a reference pixel, calculates difference values between a reference grayscale value provided to the reference pixel and comparison grayscale values provided to comparison pixels adjacent to the reference pixel, compares the difference values to a threshold value, counts up a value of a grayscale grade to which the reference grayscale value belongs among a plurality of grayscale grades according to the compared result, and varies the gamma data based on distribution ratios of values accumulated in the grayscale grades.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: June 18, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Eungyeong Choe, Jin-wook Yang
  • Publication number: 20190164502
    Abstract: An organic light emitting display device includes: a display panel including a plurality of pixel rows each including first pixel groups alternating with second pixel groups; a gate driver configured to provide a first group gate signal to the first pixel groups, and to provide a second group gate signal to the second pixel groups; a data driver configured to output data voltages to a plurality of output line groups; and a connection controller configured to connect the output line groups to a first data line group in response to a first connection control signal, and to connect the output line groups to a second data line group in response to a second connection control signal.
    Type: Application
    Filed: October 23, 2018
    Publication date: May 30, 2019
    Inventors: Changnoh YOON, Jin-Wook YANG
  • Publication number: 20190080651
    Abstract: Example embodiments of the present disclosure provide a display device including: a plurality of pixels; a first scan gate line and a second scan gate line configured to transfer scan signals to a first pixel row of the pixels; a plurality of first gate bridges connected with the first scan gate line to transfer the scan signals to a plurality of first pixels at the first pixel row; a plurality of second gate bridges connected with the second scan gate line to transfer the scan signals to a plurality of second pixels at the first pixel row; a plurality of first data lines configured to supply a plurality of data voltages corresponding to the first pixels; and a plurality of second data lines configured to supply a plurality of data voltages corresponding to the second pixels, wherein two of the first data lines are positioned between two first pixels corresponding thereto, and two of the second data lines are positioned between two second pixels corresponding thereto.
    Type: Application
    Filed: January 5, 2018
    Publication date: March 14, 2019
    Inventors: Soon-Dong KIM, Il-Joo KIM, Jun Ki JEONG, Jin-Wook YANG, Gyung Soon PARK