Patents by Inventor Se Hyuk AN

Se Hyuk AN 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: 20220328013
    Abstract: Embodiments of the present disclosure relate to a display device and a driving method thereof, and the display device includes a demultiplexer connected to a first data line and transferring a data signal from the first data line to a plurality of second data lines during a data writing period of one frame, a compensator calculating an on-pixel ratio (OPR) using input data in the one frame and generating compensation data corresponding to a calculated OPR, and a data driver supplying the data signal to the first data line using the input data during the data writing period, and supplying a compensation data signal to the first data line using the compensation data in a blank period of the one frame, and the demultiplexer supplies the compensation data signal from the first data line to a second data line during the blank period.
    Type: Application
    Filed: January 25, 2022
    Publication date: October 13, 2022
    Inventors: Jin Young ROH, Hong Soo KIM, Se Hyuk PARK, Hyo Jin LEE, Jae Keun LIM
  • Publication number: 20220319409
    Abstract: A display device comprises pixels, an emission control driver, a scan driver, and a timing controller for selecting whether the display device is to operate in a first display mode in which the display device is driven at a first frequency or a second display mode in which the display device is driven at a second frequency lower than the first frequency based on input image data. The first display mode comprises first frame periods, and the second display mode comprises second frame periods having at least two sub-frames having a period equal to the first frame period. A total time required to supply the scan signals to the scan lines in one first frame period of the first frame periods and a total time required to supply the scan signals to the scan lines in one second frame period of the second frame periods are substantially same.
    Type: Application
    Filed: November 3, 2021
    Publication date: October 6, 2022
    Inventors: Se Hyuk PARK, Hong Soo KIM, Jin Young ROH, Hyo Jin LEE, Jae Keun LIM
  • Publication number: 20220319371
    Abstract: A display panel includes a display panel displaying an image including a moving image and a static image; a controller generating first image data to the first area in a first arrangement type, and generating second image data to the second area in a second arrangement type; a scan driver sequentially supplying scan signals to all of pixel rows of the first area during a first period of a first frame and sequentially supplying scan signals to a part of pixel rows of the second area exclusively during a second period of the first frame; and a data driver supplying data signals corresponding to the first image data to data lines during the first period, and supplying data signals corresponding to the second image data to the data lines during the second period.
    Type: Application
    Filed: October 6, 2021
    Publication date: October 6, 2022
    Inventors: Ji Youn KIM, Hong Soo KIM, Se Hyuk PARK, Jun Heyung JUNG, Man Seung CHO
  • Publication number: 20220319435
    Abstract: The present disclosure provides a display device that controls output of a scan signal, conversion of image data, and output of a data signal in response to partial scan driving. The display device includes a display panel driven in one of a first mode and a second mode, a scan driver sequentially supplying a scan signal for writing data in the first mode, a controller generating image data in which input image data is rearranged based on the first mode or the second mode, and a data driver converting the image data into data signals and supplying the data signals to output channels.
    Type: Application
    Filed: November 5, 2021
    Publication date: October 6, 2022
    Inventors: Se Hyuk PARK, Hong Soo KIM, Jin Young ROH, Hyo Jin LEE, Jae Keun LIM
  • Patent number: 11462172
    Abstract: A display device includes: a pixel part including a plurality of pixels; a first scan driver to provide a first scan signal to each of the pixels; and an initialization controller to control the first scan driver. Each of the pixels includes a pixel circuit including a plurality of transistors, and a light emitting element connected to the pixel circuit, an anode of the light emitting element is to be initialized to a first initialization voltage in response to the first scan signal having a gate-on level, and the initialization controller is to determine whether to provide the first scan signal having the gate-on level to each of the pixels for each frame.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: October 4, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se Hyuk Park, Ji Youn Kim, Hong Soo Kim, Jin Young Roh, Hyo Jin Lee, Jae Keun Lim
  • Publication number: 20220309998
    Abstract: Provided is a display device comprising a pixel unit including first pixel rows connected to first scan lines and second pixel rows alternating with the first pixel rows and connected to second scan lines, a scan driver including first scan stages connected to the first scan lines and second scan stages connected to the second scan lines, and an emission driver including emission stages in which each of emission lines is connected to two or more pixel rows. Accordingly, the display device is capable of changing a display frequency and maintaining the same cycle in which luminance decreases when the display frequency is changed.
    Type: Application
    Filed: November 24, 2021
    Publication date: September 29, 2022
    Inventors: Jae Keun LIM, Hong Soo KIM, Jin Young ROH, Se Hyuk PARK, Woo Mi BAE, Hyo Jin LEE
  • Publication number: 20220293027
    Abstract: A display system includes: a host processor which outputs first image data and outputs scan frequency information and a partial scan enable signal, based on an image driving frequency; a display module controlled by the host processor; and an interface. The display module includes: a display driving circuit which controls a selection of pixel rows to which the data signals are supplied based on the scan frequency information and the partial scan enable signal; and a display panel which displays an image on selected pixel rows based on the data signals. In a video mode of the interface, the host processor divides and outputs the first image data through the interface during transmission periods, based on the image driving frequency, and suspends an output of the first image data through the interface during suspend periods.
    Type: Application
    Filed: November 8, 2021
    Publication date: September 15, 2022
    Inventors: Se Hyuk PARK, Jin Young ROH, Hyo Jin LEE, Jae Keun LIM
  • Patent number: 11436971
    Abstract: A display driving apparatus includes an output control circuit configured to, with one frame being divided into a plurality of blank periods by touch driving, output source signals corresponding to display data during the plurality of blank periods; and a polarity control circuit configured to receive pre-polarity control information for polarity inversion, and control polarities of the source signals outputted from the output control circuit, for polarity inversion by the unit of vertical 2 dots for one frame, wherein polarities for pre dummy lines and active data lines of odd-numbered and even-numbered blank periods are controlled by the pre-polarity control information.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: September 6, 2022
    Assignee: Silicon Works Co., Ltd
    Inventors: Yong Min Kim, Ju Ho Lee, Da Sol Won, Se Hyuk An
  • Publication number: 20220270552
    Abstract: A display device includes a display panel including a plurality of pixels each coupled to a write scan line, a compensation scan line, an initialization scan line, a bypass scan line, and a data line; and a scan driver configured to supply i (where i is a natural number) write scan pulses, compensation scan pulses, initialization scan pulses, and bypass scan pulses to the write scan line, the compensation scan line, the initialization scan line, and the bypass scan line, respectively, during a first period corresponding to one frame period, and to supply j (where j is a natural number other than i) write scan pulses to the write scan line during each of frame periods of a second period including a plurality of consecutive frame periods.
    Type: Application
    Filed: August 26, 2019
    Publication date: August 25, 2022
    Inventors: Jin Young ROH, Hui NAM, Se Hyuk PARK, Hyo Jin LEE
  • Patent number: 11423834
    Abstract: A display device includes: a pixel configured to display an image based on image data and a reference voltage; a controller configured to generate reference voltage data corresponding to the reference voltage for restraining leakage current in the pixel based on a frame frequency; and a power supply configured to generate the reference voltage based on the reference voltage data and supply the reference voltage to the pixel.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: August 23, 2022
    Inventors: Se Hyuk Park, Hong Soo Kim, Jin Young Roh, Hyo Jin Lee, Jae Keun Lim
  • Publication number: 20220262296
    Abstract: Provided is a display device including a pixel unit in which each of pixel rows extends in a first direction, odd numbered pixel rows and even numbered pixel rows are alternately disposed in a second direction, and pixels included in the pixel rows are designated as dots having two or more units, a gray difference calculator that calculates difference between representative grays of dots adjacent in the second direction among dots of a p-th pair of the pixel rows, an edge detector that increases an edge dot number when a first condition in which the difference between the representative grays is larger than a first threshold value is satisfied, and a first pattern detector that increases an edge number when the edge dot number is larger than a second threshold value, and that generates a first pattern detection signal when the edge number is larger than a third threshold value.
    Type: Application
    Filed: November 24, 2021
    Publication date: August 18, 2022
    Inventors: Jae Keun LIM, Hong Soo KIM, Jin Young ROH, Se Hyuk PARK, Hyo Jin LEE
  • Patent number: 11417264
    Abstract: A scan driver stage including: a first transistor including a gate connected to a first clock, a first electrode connected to a carry terminal, and a second electrode connected to a first node; a second transistor including a gate connected to a second clock, a first electrode connected to a carry terminal, and a second electrode connected to the first node; a third transistor including a gate connected to the first node and a first electrode connected to a second node; a fourth transistor including a gate connected to the second clock, a first electrode connected to power, and a second electrode connected to the second node; a fifth transistor including a gate connected to the first clock, a first electrode connected to power, and a second electrode connected to the second node; and an output outputting first and second scan signals based on first and second node voltages.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: August 16, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Keun Lim, Jin Young Roh, Se Hyuk Park, Hyo Jin Lee
  • Patent number: 11367379
    Abstract: A display device according to an embodiment of the disclosure includes a timing controller, a scan driver including a plurality of stages connected to a plurality of clock signal lines and generating a plurality of scan signals in response to the scan start signal, a data driver configured to generate a plurality of data signals based on the image data, and a pixel portion including a plurality of pixels. One stage in the scan driver transmits a carry signal to 2n-th next stage. The timing controller selects any one of a normal frequency and low frequencies lower than the normal frequency as a driving frequency based on the input image data, and adjusts a clock duty of the plurality of clock signals so that a time required to output all of the plurality of scan signals during one frame is constant irrespective of the driving frequency.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: June 21, 2022
    Inventors: Se Hyuk Park, Jae Keun Lim, Hong Soo Kim, Jin Young Roh, Hyo Jin Lee
  • Patent number: 11335234
    Abstract: A display device according to an embodiment of the disclosure includes a timing controller, a scan driver including a plurality of stages connected to a plurality of clock signal lines and generating a plurality of scan signals in response to the scan start signal, a data driver configured to generate a plurality of data signals based on the image data, and a pixel portion including a plurality of pixels. One stage in the scan driver transmits a carry signal to 2n-th next stage. The timing controller selects any one of a normal frequency and low frequencies lower than the normal frequency as a driving frequency based on the input image data, and adjusts a clock duty of the plurality of clock signals so that a time required to output all of the plurality of scan signals during one frame is constant irrespective of the driving frequency.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: May 17, 2022
    Inventors: Se Hyuk Park, Jae Keun Lim, Hong Soo Kim, Jin Young Roh, Hyo Jin Lee
  • Publication number: 20220115259
    Abstract: A chuck assembly for holding a plate comprises a member configured to hold the plate, the member including a flexible portion configured to have a central opening, and a first cavity formed by the flexible portion, wherein the plate is held by the flexible portion by reducing pressure in the first cavity, a light-transmitting member covering the central opening of the member, and a fluid path in communication with a second cavity defined by the member, the plate held by the member and the light-transmitting member for pressurizing the second cavity.
    Type: Application
    Filed: October 13, 2020
    Publication date: April 14, 2022
    Inventors: SETH J. BAMESBERGER, SE-HYUK IM, BYUNG-JIN CHOI
  • Publication number: 20220101774
    Abstract: A scan driver stage including: a first transistor including a gate connected to a first clock, a first electrode connected to a carry terminal, and a second electrode connected to a first node; a second transistor including a gate connected to a second clock, a first electrode connected to a carry terminal, and a second electrode connected to the first node; a third transistor including a gate connected to the first node and a first electrode connected to a second node; a fourth transistor including a gate connected to the second clock, a first electrode connected to power, and a second electrode connected to the second node; a fifth transistor including a gate connected to the first clock, a first electrode connected to power, and a second electrode connected to the second node; and an output outputting first and second scan signals based on first and second node voltages.
    Type: Application
    Filed: May 14, 2021
    Publication date: March 31, 2022
    Inventors: Jae Keun LIM, Jin Young ROH, Se Hyuk PARK, Hyo Jin LEE
  • Publication number: 20220068209
    Abstract: A display apparatus includes a display panel, a first gate driver, a second gate driver, a third gate driver, and a data driver. The display apparatus is operable in a low frequency driving mode, and the low frequency driving mode includes a writing frame and a holding frame. At least one of gate power voltages used to generate a first gate signal, a second gate signal, and an emission signal has a first voltage level in the writing frame of the low frequency driving mode and a second voltage level in the holding frame of the low frequency driving mode. The data voltage is applied to the pixel in the writing frame of the low frequency driving mode. The data voltage applied to the pixel in the writing frame of the low frequency driving mode is maintained in the holding frame of the low frequency driving mode.
    Type: Application
    Filed: November 11, 2021
    Publication date: March 3, 2022
    Inventors: Se Hyuk PARK, Hong Soo KIM, Jin Young ROH, Hyo Jin LEE, Jae Keun LIM
  • Publication number: 20220051602
    Abstract: A display device includes: a display panel configured to display an image; a signal controller configured to determine whether an input image signal is a still image signal, and determine color coordinates using data values of one frame data of the input image signal, and generate compensated image data by compensating image data of the one frame data based on the color coordinates; and a data driver configured to generate a data signal based on the compensated image data and output the compensated image data to the display panel through a data line.
    Type: Application
    Filed: May 13, 2021
    Publication date: February 17, 2022
    Inventors: Se Hyuk PARK, Hong Soo KIM, Jin Young ROH, Hyo Jin LEE, Jae Keun LIM
  • Patent number: 11249405
    Abstract: A system and method of imprinting a formable material on a substrate includes a feature with a template. The substrate is initially held with a first back pressure. After which the template is brought into contact with the formable material. A template strain tensor above the feature may be greater than a strain threshold. The substrate is then held with a second back pressure less than the first back pressure, after which the substrate strain below the feature increases. After which the formable material is solidified.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: February 15, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Byung-Jin Choi, Se-Hyuk Im
  • Publication number: 20220036797
    Abstract: A display device includes first dots connected to first scan lines, second dots connected to second scan lines and alternately disposed with the first dots in a first direction and a second direction different from the first direction, a scan driver including first stages respectively connected to the first scan lines and second stages respectively connected to the second scan lines, and a data driver connected to the first dots and the second dots through data lines. The first stages are connected to first clock lines, the second stages are connected to second clock lines, first stages except a first start stage are respectively connected to corresponding first scan lines of corresponding previous first stages, and second stages except a second start stage are respectively connected to corresponding second scan lines of corresponding previous second stages.
    Type: Application
    Filed: February 23, 2021
    Publication date: February 3, 2022
    Inventors: Se Hyuk PARK, Hong Soo KIM, Jin Young ROH, Bong Hyun YOU, Hyo Jin LEE, Jae Keun LIM