Patents by Inventor Nam-gon Choi

Nam-gon 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).

  • Patent number: 9087478
    Abstract: A display device and a method of driving a display device including: storing information on a stitch pattern; setting a data processing region disposed in a vicinity of a horizontal center line of a display panel and including a plurality of pixels; and performing data processing of changing gray of data for a portion of the plurality of pixels of the data processing region according to the information on the stitch pattern. The display panel includes a plurality of pixels arranged in a form of a matrix, a plurality of first data lines disposed in a first display panel region on a first side of the horizontal center line, and a plurality of second data lines disposed in a second display panel region on a second side of the horizontal center line opposite the first side.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: July 21, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Woong Jeong, Nam-Gon Choi, Geun Jeong Park, Dong-Won Park, Yong Jun Jang, Cheol Woo Park, Jeong-Hun So, Hyun Dae Lee
  • Publication number: 20150077406
    Abstract: A display device including a display panel which includes pixels connected to gate lines and data lines; and an image display control unit controlling an input image signal to be converted into a data signal and, thereby, display an image on the display panel. The image display control unit outputs the data signal so that a position of an image being displayed on the display panel is changed when the image signal is the same for a preselected time period and sets a next position change time period of the image according to a distance between an original position of the image and a changed position of the image.
    Type: Application
    Filed: February 7, 2014
    Publication date: March 19, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Donggyu LEE, Joon-Chul Goh, Nam-Gon Choi, Jung-Won Kim, HongSoo Kim, Geunjeong Park
  • Publication number: 20150071550
    Abstract: An apparatus for detecting an afterimage candidate region includes: a comparison unit which compares gradation data of an n-th frame with integrated gradation data of an (n?1)-th frame and generates integrated gradation data of the n-th frame, where n is a natural number; a memory which provides the integrated gradation data of the (n?1)-th frame to the comparison unit and stores the integrated gradation data of the n-th frame; and an afterimage candidate region detection unit which detects an afterimage candidate region based on the integrated gradation data of the n-th frame, where each of the integrated gradation data of the n-th frame and the integrated gradation data of the (n?1)-th frame comprises a comparison region and a gradation region.
    Type: Application
    Filed: March 11, 2014
    Publication date: March 12, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Yong Jun JANG, Nam Gon CHOI, Joon Chul GOH, Gi Geun KIM, Geun Jeong PARK, Cheol Woo PARK, Yun Ki BAEK, Jeong Hun SO, Dong Gyu LEE
  • Publication number: 20150070406
    Abstract: A display apparatus includes: a panel including a plurality of pixels configured to display an image; an ambient light sensor configured to sense an illumination level of ambient light and to generate ambient light data; a gamma controller configured to control sections of a reference gamma curve based on the ambient light data to generate a controlled gamma curve, the controlled gamma curve defining output data according to input data; a data driver configured to convert an image signal into a data voltage based on the controlled gamma curve and to supply the data voltage to the pixels; and a gate driver configured to supply a gate signal to the pixels.
    Type: Application
    Filed: March 4, 2014
    Publication date: March 12, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yun-Ki Baek, Jung-Taek Kim, Yong-Jun Jang, Nam-Gon Choi, Joon-Chul Goh, Ah-Reum Kim
  • Publication number: 20150049123
    Abstract: A display device includes: a similar gray level block detector configured to detect a pixel data block in which a gray level difference between a plurality of pixel data included in an image signal is smaller than or equal to a threshold; a skin tone detector configured to detect the pixel data block including a skin tone; and a gamma processor configured to apply a first gamma to a plurality of pixel data included in the pixel data block when the pixel data block does not include the skin tone and apply a second gamma to the plurality of pixel data included in the pixel data block when the pixel data block includes the skin tone.
    Type: Application
    Filed: February 10, 2014
    Publication date: February 19, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Nam-Gon CHOI, Joon-Chul GOH, Gi Geun KIM, Yun Ki BAEK, Yong Jun JANG, Ah Reum KIM, Geun Jeong PARK, Cheol Woo PARK, Jeong-Hun SO, Dong Gyu LEE
  • Patent number: 8922532
    Abstract: A method of driving a display panel including converting a frame rate of input image data to generate first image data, writing the first image data to a memory, outputting a flag signal to a timing controller, reading the first image data from the memory according to the flag signal, compensating the first image data to generate second image data, and converting the second image data into an analog data voltage and outputting the data voltage to the display panel.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: December 30, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Nam-Gon Choi, Jung-Taek Kim, Kyoung-Won Lee
  • Publication number: 20140333516
    Abstract: A display device and a driving method thereof are disclosed. In one aspect, the display device includes: a memory which receives an input image data at a first frame frequency and a frame rate controlling unit which converts the input image data to an output image data output at a second frame frequency higher than the first frame frequency by duplicating the input image data to a plurality of frames. The display device also includes a release frame inserting unit which periodically designates release frames in the output image data for resolving a DC bias of one or more continuous frames and a data compensating unit which compensates for a value of the output image data or determines the value of the output image data.
    Type: Application
    Filed: September 3, 2013
    Publication date: November 13, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Dong-Won Park, Joon-Chul Goh, Nam-Gon Choi, Jung-Won Kim, Bong Hyun You, Bum Soo Lee
  • Patent number: 8866799
    Abstract: A display apparatus includes a display panel, a plurality of gate lines driving circuit parts, a plurality of data lines driving circuit parts and a timing control part. The display panel includes a plurality of gate lines and a plurality of data lines. The gate lines driving circuit parts output gate signals to the gate lines. The data lines driving circuit parts output data signals to the data lines. The timing control part applies a dummy gate signal to at least one dummy gate line, controls a latch sequence of image data and an output sequence of the gate lines driving circuit parts in a reverse sequence, in response to an inverted-mounting mode selection signal for displaying an inverted mount image to the display panel. Because signal lines can be shortened, heat generated by the display apparatus may be decreased and image quality of the display apparatus may be improved.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: October 21, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Bong-Ju Jun, Nam-Gon Choi, Joo-Hwan Park, Yong-Bum Kim, Dong-Hyun Yeo
  • Patent number: 8860668
    Abstract: A display device including a display panel, a sensing electrode that is disposed in a matrix pattern and outputs a sensing signal with respect to an external stimulus, a calculator that divides the display panel into a plurality of detection regions based on a coordinate of a first stimuli group outputting a sensing signal with respect to a first stimulus, and a position determiner is presented. The position determiner determines a coordinate of a second stimuli group outputting a sensing signal with respect to a second stimulus and designates the coordinate as a stimulus position if the second stimulus is generated from a selection detection region within predetermined detection time after the first stimulus.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: October 14, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Nam-gon Choi, Seung-hwan Moon
  • Publication number: 20140246774
    Abstract: A semiconductor device and method for manufacturing the same are provided. A metal pad can be electrically connected to metal interconnections in a lower portion of the device. A passivation layer can be provided and can exposes a portion of the metal pad, and a buffer layer can be formed on lateral sides of the passivation layer.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 4, 2014
    Applicant: DONGBU HITEK CO., LTD.
    Inventor: Nam Gon CHOI
  • Publication number: 20140247289
    Abstract: An image processing method includes: receiving an input image signal (IIS); doubling the IIS into frames; determining a TGM mode to control an order in which gamma curves (GC) are to be applied to the doubled IIS, the GCs including first and second GCs; applying the GCs to the doubled IIS based on the TGM mode to generate a doubled, TGM-processed image signal (DTIS); correcting the DTIS to generate a corrected image signal (CIS); and dither-processing the CIS to generate an output image signal. The dither-processing of the CIS includes: performing dither-processing by sequentially applying dithering patterns (DP) of a first DP set to the CIS in association with first ones of the frames with respect to the first GC, and performing the dither-processing by sequentially applying DPs of a second DP set to the CIS in association with second ones of the frames with respect to the second GC.
    Type: Application
    Filed: August 27, 2013
    Publication date: September 4, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Geun Jeong PARK, Nam-Gon CHOI, Jung-Taek KIM, Yong Jun JANG, Jin-Woong JEONG, Cheol Woo PARK
  • Publication number: 20140232756
    Abstract: A image signal processing method of a liquid crystal display according to an exemplary embodiment of the present invention includes: receiving a previous image signal and a current image signal as two sequential input image signals; performing a first correction (DCC) and a doubling for the current image signal to generate a correction image signal comprising a plurality of doubled frames for the current image signal; and post-processing the portion of the plurality of doubled frames to generate a final correction image signal.
    Type: Application
    Filed: August 12, 2013
    Publication date: August 21, 2014
    Inventors: Nam-Gon CHOI, Yong Jun Jang, Jung-Won Kim, Geun Jeong Park, Ji-Woong Jeong, UK Chul Choi, Joon-Chul Goh, Cheol Woo Park, Bong Hyun You
  • Publication number: 20140204065
    Abstract: A display device includes a display panel, a first timing controller, and a second timing controller. The display panel includes a first block and a second block adjacent to the first block, with a data line positioned between the first block and the second block. The first block includes a first column of pixels, and the second block includes a second column of pixels. The first and second columns of pixels are alternately connected to the data line. The first timing controller is configured to receive first image data corresponding to the first block. A second timing controller is configured to receive second image data corresponding to the second block. The first timing controller is configured to transfer at least part of the first mage data to the second timing controller.
    Type: Application
    Filed: May 29, 2013
    Publication date: July 24, 2014
    Inventors: Dong-Won PARK, Nam-Gon Choi, Geunjeong Park, Taehyeong An, Donggyu Lee, Yongjun Jang, Ji-woong Jeong
  • Publication number: 20140204104
    Abstract: A display apparatus includes pixels connected to gate lines and data lines, a gate driver configure to drive the gate lines, a data driver including a plurality of data driving parts configured to drive the data lines. The control board includes a processor that outputs an image signal and a control signal and a timing controller that outputs a first control signal to control the gate driver and a second control signal and a data signal to control the data driver in response to the image signal and the control signal.
    Type: Application
    Filed: June 24, 2013
    Publication date: July 24, 2014
    Applicant: SAMSUNG DISPLAY CO.,LTD.
    Inventors: YONGJUN JANG, Nam-Gon CHOI, Geunjeong PARK, Hyundae LEE, CHEOLWOO PARK, Jeong-hun SO, BONGHYUN YOU, YUN KI BAEK, Kyoung Ho LIM
  • Publication number: 20140184670
    Abstract: A display device and a method of driving a display device including: storing information on a stitch pattern; setting a data processing region disposed in a vicinity of a horizontal center line of a display panel and including a plurality of pixels; and performing data processing of changing gray of data for a portion of the plurality of pixels of the data processing region according to the information on the stitch pattern. The display panel includes a plurality of pixels arranged in a form of a matrix, a plurality of first data lines disposed in a first display panel region on a first side of the horizontal center line, and a plurality of second data lines disposed in a second display panel region on a second side of the horizontal center line opposite the first side.
    Type: Application
    Filed: September 3, 2013
    Publication date: July 3, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Ji-Woong JEONG, Nam-Gon Choi, Geun Jeong Park, Dong-Won Park, Yong Jun Jang, Cheol Woo Park, Jeong-Hun So, Hyun Dae Lee
  • Patent number: 8767001
    Abstract: A method of compensating data uses a look-up table divided into a first area, a second area and a boundary area between the first and second areas defined by a first previous reference value, a second previous reference value greater than the first previous reference value, a first current reference value and a second current reference value less than the first current reference value. A compensation data of a current frame is generated based on to which one of the first, second and boundary areas grayscale data of previous and current frames belongs.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: July 1, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Nam-Gon Choi, Bong-Im Park, Byung-Kil Jeon
  • Patent number: 8766894
    Abstract: A liquid crystal display system including a signal processing device uses interpolation to generate an intermediate image frame using previous image frame data and present image frame data. The system converts data of the intermediate image frame into transposed image data that is to be used to drive a liquid crystal display panel and display a corresponding image. The transposed image data and the present image data are subjected to a prespecified DCC process (dynamic capacitance compensation process) to thereby generate respective first and second compensation image data. Since the first compensation image data is generated based on the transposed image data and the transposition is configured to prevent over-compensation by the DCC process, over-compensation by the dynamic capacitance compensation process can be reduced or prevented.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: July 1, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Bong-Im Park, Jong-Hyon Park, Bong-Ju Jun, Jae-Won Jeong, Yong-Jun Choi, Woo-Chul Kim, Byung-Kil Jeon, Nam-Gon Choi, Yun-Jae Kim, Dong-Beom Cho
  • Publication number: 20140104324
    Abstract: A display apparatus includes a temperature sensor, a timing controller, a data driver and a display panel. The temperature sensor senses a temperature, the timing controller includes a dynamic capacitance capture (“DCC”) block, which converts a green data, a red data and a blue data into a green compensation data, a red compensation data and a blue compensation data, respectively, based on the temperature sensed by the temperature sensor, and the data driver converts the red compensation data, the green compensation data and the blue compensation data into a data voltage and outputs the data voltage. The display panel receives the data voltage and displays an image.
    Type: Application
    Filed: December 18, 2013
    Publication date: April 17, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: BONGIM PARK, Nam-Gon CHOI, ByungKil JEON, Jae-Won JEONG, Woo-Young LEE, Kang-Hyun KIM
  • Patent number: 8665297
    Abstract: A display apparatus includes a temperature sensor, a timing controller, a data driver and a display panel. The temperature sensor senses a temperature, the timing controller includes a dynamic capacitance capture (“DCC”) block, which converts a green data, a red data and a blue data into a green compensation data, a red compensation data and a blue compensation data, respectively, based on the temperature sensed by the temperature sensor, and the data driver converts the red compensation data, the green compensation data and the blue compensation data into a data voltage and outputs the data voltage. The display panel receives the data voltage and displays an image.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: March 4, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Bongim Park, Nam-Gon Choi, ByungKil Jeon, Jae-Won Jeong, Woo-Young Lee, Kang-Hyun Kim
  • Publication number: 20140035961
    Abstract: A display device includes a display panel including pixels for displaying four colors including a white color. The display device further includes a signal converter for generating four output signals pertaining to the four colors using three input signals pertaining to three non-white colors of the four colors. The display device further includes a signal processor for processing the output signals to generate data signals and to provide the data signals to the display panel for the pixels to display an image. The signal converter includes at least one adder and a plurality of bit shifters for calculating a white-signal candidate using signals related to the input signals. The signal converter may determine a white-related output signal of the output signals using the white-signal candidate.
    Type: Application
    Filed: January 11, 2013
    Publication date: February 6, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yong Jun JANG, Eun Ho LEE, Nam-Gon CHOI, Geun Jeong PARK, Ji-Woong JEONG