Patents by Inventor Ji-Myoung Seo

Ji-Myoung Seo 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: 20150310796
    Abstract: A method of driving an electro wetting display panel includes applying a first data voltage to a pixel part of the display panel during a first section of a frame and applying a second data voltage different from the first data voltage to the same pixel part during a second section of the frame. The first data voltage is converted from display data based on a first gamma curve. The second data voltage is converted from the display data based on a second gamma curve. Light transmittance through the pixel part is changed based on movement of a fluid within the pixel part.
    Type: Application
    Filed: July 6, 2015
    Publication date: October 29, 2015
    Inventors: Hyun-Sik Hwang, Uk-Chul Choi, Yong-Jun Jang, Su-Hyeong Park, Ji-Myoung Seo
  • Patent number: 9153196
    Abstract: A display device includes a display panel including a gate line, a data line, and a pixel connected to the gate line and the data line, a data driver connected to the data line, a gate driver connected to the gate line, and a signal controller controlling the data driver and the gate driver, wherein a circuits powering power source voltage that is normally used for driving the data driver is selectively not applied during a new-image blanking time when the signal controller is not supplying image data to the data driver.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: October 6, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seok Ha Hong, Dae-Gwang Jang, Sang Mi Kim, Ung Gyu Min, Ji Myoung Seo, Bong Hyun You, Hyun Sik Hwang, Gi Geun Kim, Jong Hee Kim, Kyoung Won Lee
  • Publication number: 20150243204
    Abstract: A data driver including a power control part configured to control power according to mode signal determined based on an input image, a digital to analog converting part configured to convert a digital data signal into an analog data voltage, a buffering part configured to buffer the data voltage, a first switching part configured to apply the data voltage to a data line in a normal mode, when turned on, and a second switching part configured to apply a blank voltage to the data line in a blank period of a low frequency mode, when turned on.
    Type: Application
    Filed: February 13, 2015
    Publication date: August 27, 2015
    Inventors: Su-Hyeong Park, Ho-Yong Jung, Sang-Mi Kim, Ji-Myoung Seo, Kyoung-Won Lee, Hee-Soon Jeong
  • Publication number: 20150194110
    Abstract: A liquid crystal display includes: a display panel including data lines, scan lines and a plurality of pixels connected to the data lines and the scan lines; a scan driver configured to supply scan signals to the scan lines; a data driver configured to supply data voltages to the data lines; and a timing controller configured to control operation timings of the scan driver and the data driver, where the timing controller is configured to output a plurality of scan output enable signals to the scan driver, and the scan driver is configured to supply odd scan signals to odd scan lines based on a first scan output enable signal of the scan output enable signals and to supply even scan signals to even scan lines based on a second scan output enable signal of the scan output enable signals.
    Type: Application
    Filed: November 5, 2014
    Publication date: July 9, 2015
    Inventors: Su-Hyeong PARK, Ji-Myoung SEO, Ho-Yong JUNG, Eun-Ho LEE, Cheol-Woo PARK
  • Patent number: 9076378
    Abstract: A method of driving an electro wetting display panel includes applying a first data voltage to a pixel part of the display panel during a first section of a frame and applying a second data voltage different from the first data voltage to the same pixel part during a second section of the frame. The first data voltage is converted from display data based on a first gamma curve. The second data voltage is converted from the display data based on a second gamma curve. Light transmittance through the pixel part is changed based on movement of a fluid within the pixel part.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: July 7, 2015
    Assignee: Amazon Technologies, Inc.
    Inventors: Hyun-Sik Hwang, Uk-Chul Choi, Yong-Jun Jang, Su-Hyeong Park, Ji-Myoung Seo
  • Publication number: 20150145900
    Abstract: A method of driving a display panel includes generating a first driving period having a first driving frequency, generating a second driving period having a second driving frequency, and inserting a compensating frame between the first driving period and the second driving period. A display apparatus includes a display panel configured to display an image, and a display panel driver configured to generate a first driving period having a first driving frequency, to generate a second driving period having a second driving frequency, and to insert a compensating frame between the first driving period and the second driving period.
    Type: Application
    Filed: August 18, 2014
    Publication date: May 28, 2015
    Inventors: Kyoung-Won Lee, Su-Hyeong Park, Ho-Yong Jung, Sang-Mi Kim, Ji-Myoung Seo
  • Patent number: 9030452
    Abstract: The described technology relates to a liquid crystal display and a driving method thereof. The liquid crystal display includes a plurality of pixels arranged in a matrix form. The pixels include a liquid crystal capacitor including a pixel electrode and a common electrode as two terminals. A plurality of data lines transfer data to the plurality of pixels. The pixels include a first pixel and a second pixel, which are adjacent to each other. First and second common signals are applied to the common electrode of the first and second pixels, respectively. The second common signal is inverted to the first common signal. The first and second common signals swing between a first voltage and a second voltage. The polarity of the data voltage transferred by a data line with respect to the first common signal or the second common signal is constant during one frame.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: May 12, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dae-Gwang Jang, Seok Ha Hong, Joon-Chul Goh, Byung Sun Kim, Sang Mi Kim, Ji Myoung Seo
  • Publication number: 20150123961
    Abstract: A liquid crystal display includes: a display panel; a signal controller configured to receive an input image signal and an input control signal, output an output image signal and an output control signal, and determine a charge sharing between two or more data lines having voltages in the same polarity; and a data driver configured to convert, based on the output control signal, the image signal into data voltages to be supplied to the data lines connected to the pixels, the data voltages having positive levels and negative levels. The data driver is further configured to perform a first charge sharing by short-circuiting first and second data lines that are adjacent to each other, and a second charge sharing by short-circuiting third and fourth data lines having data voltages in the same polarity, wherein the first charge sharing and the second charge sharing may not temporally overlap with each other.
    Type: Application
    Filed: October 24, 2014
    Publication date: May 7, 2015
    Inventors: Su Hyeong PARK, Ung Gyu MIN, Ji Myoung SEO, Cheol Woo PARK, Ho Yong JUNG
  • Patent number: 9019200
    Abstract: A method of driving an electro-wetting display panel including a pixel part is provided. In the method, data voltages are applied to the electro-wetting display panel during a first time of a frame. The frame has the first time and a second time. The first time has a plurality of horizontal periods. The data voltages are generated based on reference gamma voltages. At least one of reference gamma voltages of one of the horizontal periods is different from another of the reference gamma voltages of another of the horizontal periods. A reset voltage is applied to the electro-wetting display panel during the second time of the frame.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: April 28, 2015
    Assignee: Amazon Technologies, Inc.
    Inventors: Hyun-Sik Hwang, Uk-Chul Choi, Su-Hyeong Park, Cheol-Woo Park, Ji-Myoung Seo, Yong-Jun Jang
  • Publication number: 20150022747
    Abstract: A display device includes a display panel, a data driver, a gate driver, and a signal controller. The display panel includes a pixel connected to the gate and data lines, and the pixel includes a liquid crystal capacitor. The signal controller obtains compensation data and normal data based on input data for a still image. The signal controller apples the compensation data and normal data to the pixel during different periods of a frame. The compensation data has a value that reduces a difference of operation characteristics of liquid crystal molecules in the liquid crystal capacitor when a data voltage for the display panel changes between different polarities.
    Type: Application
    Filed: July 18, 2014
    Publication date: January 22, 2015
    Inventors: Seok Ha HONG, Dae-Gwang JANG, Gi Geun KIM, Sang Mi KIM, Ji Myoung SEO
  • Publication number: 20140313113
    Abstract: The described technology relates to a liquid crystal display and a driving method thereof. The liquid crystal display includes a plurality of pixels arranged in a matrix form. The pixels include a liquid crystal capacitor including a pixel electrode and a common electrode as two terminals. A plurality of data lines transfer data to the plurality of pixels. The pixels include a first pixel and a second pixel, which are adjacent to each other. First and second common signals are applied to the common electrode of the first and second pixels, respectively. The second common signal is inverted to the first common signal. The first and second common signals swing between a first voltage and a second voltage. The polarity of the data voltage transferred by a data line with respect to the first common signal or the second common signal is constant during one frame.
    Type: Application
    Filed: September 10, 2013
    Publication date: October 23, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Dae-Gwang Jang, Seok Ha Hong, Joon-Chul Goh, Byung Sun Kim, Sang Mi Kim, Ji Myoung Seo
  • Publication number: 20140160182
    Abstract: A display device includes a display panel including a gate line, a data line, and a pixel connected to the gate line and the data line, a data driver connected to the data line, a gate driver connected to the gate line, and a signal controller controlling the data driver and the gate driver, wherein a circuits powering power source voltage that is normally used for driving the data driver is selectively not applied during a new-image blanking time when the signal controller is not supplying image data to the data driver.
    Type: Application
    Filed: July 11, 2013
    Publication date: June 12, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Seok Ha HONG, Dae-Gwang JANG, Sang Mi KIM, Ung Gyu MIN, Ji Myoung SEO, Bong Hyun YOU, Hyun Sik HWANG, Gi Geun KIM, Jong Hee KIM, Kyoung Won LEE
  • Publication number: 20140085276
    Abstract: A driving method of a display device includes: determining each of a plurality of pixel rows of the display device as one of a motion picture display pixel row and a still image display pixel row by comparing image data of each of the pixel rows in a current frame and in a previous frame; and driving the motion picture display pixel row with a motion picture frequency and driving the still image display pixel row with a still image display frequency, which is lower than or equal to the motion picture frequency, where a plurality of still image display pixel rows are driven with at least two still image display frequencies.
    Type: Application
    Filed: July 24, 2013
    Publication date: March 27, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Dae-Gwang JANG, Ung Gyu MIN, Seok Ha HONG, Hyun Sik HWANG, Byung Sun KIM, Sang Mi KIM, Bong Hyun YOU, Ji Myoung SEO
  • Publication number: 20140015821
    Abstract: A display panel driving apparatus includes a first switching element and a second switching element. The first switching element applies first pixel data to a first pixel connected with a first data line of a display panel during a first sub frame period. The first switching element is connected with a data channel of a data driving part. The second switching element applies second pixel data having a level higher than a level of the first pixel data to a second pixel connected with a second data line of the display panel during a second sub frame period. The second switching element is connected with the data channel. Thus, display quality of a display apparatus may be enhanced.
    Type: Application
    Filed: November 16, 2012
    Publication date: January 16, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun-Sik HWANG, Dae-Gwang Jang, Byung-Sun Kim, Sang-Mi Kim, Ji-Myoung Seo, Seok-Ha Hong