Patents by Inventor Jai-Hyun Koh

Jai-Hyun Koh 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: 20160035265
    Abstract: A display apparatus includes a display panel, a timing controller, a gate driver, and a data driver. The display panel includes a plurality of pixel groups. Each of the pixel groups includes a first pixel and a second pixel disposed adjacent to the first pixel. The first and second pixels together include n (n is an odd number equal to or greater than 3) sub-pixels. The first and second pixels share their collective {(n+1)/2}th sub-pixel.
    Type: Application
    Filed: July 10, 2015
    Publication date: February 4, 2016
    Inventors: Sungjae PARK, Jai-Hyun KOH, Yu-Kwan KIM, Jinpil KIM, Iksoo LEE, Namjae LIM
  • Publication number: 20160019846
    Abstract: A display apparatus includes: a display panel including a first display area and a second display area; a first control driver configured to receive first data signals, control the display panel to display images on the first display area, and generate a first histogram corresponding to the first data signals; a second control driver configured to receive second data signals, control the display panel to display images on the second display area, and generate a second histogram corresponding to the second data signals; and a backlight unit configured to supply light to the display panel. The first control driver is further configured to receive the second histogram from the second control driver and generate a backlight control signal for controlling luminance of the backlight unit based on the first and second histograms.
    Type: Application
    Filed: July 2, 2015
    Publication date: January 21, 2016
    Inventors: Heendol Kim, Jai-Hyun Koh, Jinpil Kim, Seokyun Son, Kuk-Hwan Ahn
  • Publication number: 20160014401
    Abstract: A display apparatus includes first pixels, second pixels, a gate driver, and a data driver. The first pixels receive data voltages in response to gate signals. The second pixels are alternately arranged with the first pixels in row and column directions and receive the data voltages in response to the gate signal. The gate and data drivers provide the gate and data signals, respectively, to the first and second pixels. Dual-gate signals each including two sub-gate signals having a same phase as each other are sequentially applied to the first and second pixels in the unit of two rows of odd-numbered rows and in the unit of two rows of even-numbered rows as the gate signals in a three-dimensional mode.
    Type: Application
    Filed: January 23, 2015
    Publication date: January 14, 2016
    Inventors: Seokyun SON, Jai-Hyun KOH, Se Ah KWON, Jinpil KIM, Heendol KIM, Kuk-Hwan AHN, IK SOO LEE
  • Publication number: 20150348481
    Abstract: Provided is a display device. The display device includes: a plurality of gate lines extending in a first direction; a plurality of data lines extending in a second direction that intersects the first direction; and a plurality of pixels connected to the gate lines and the data lines, wherein the pixels include pixels h-th row pixels (h is a natural number) and (h+1)-th row pixels, which are adjacent to each other in the second direction, with a (k+1)-th gate line (k is a natural number) therebetween among the gate lines; and a first pixel displaying a first color and connected to the (k+1)-th gate line among the h-th row pixels and a second pixel displaying the first color and connected to the (k+1)-th gate line among the (h+1)-th row pixels are spaced apart from each other in the first direction and receive different polarities of data voltages.
    Type: Application
    Filed: December 1, 2014
    Publication date: December 3, 2015
    Inventors: Seokha HONG, TAEJIN KIM, Ahyoung SON, BONGHYUN YOU, Jai-Hyun KOH, Sang-Uk LIM
  • Publication number: 20150348479
    Abstract: A method of driving a light source includes outputting a light source driving signal and outputting a delayed driving signal. The light source driving signal drives a light source based on image data. The delayed driving signal is generated by delaying the light source driving signal based on a vertical sync signal having a frame period of the image data and a data enable signal having a horizontal line period of the image data.
    Type: Application
    Filed: November 14, 2014
    Publication date: December 3, 2015
    Inventors: HEEN-DOL KIM, Jai-Hyun Koh, Hyun-Kyu Namkung, Kuk-Hwan Ahn, Nam-Jae Lim
  • Publication number: 20150243223
    Abstract: A method of displaying an image on a display panel including pixels arranged in an m-by-n matrix (m and n being natural numbers), including measuring a complexity of image data based on an entropy or a most significant bit, the image data including a plurality of unit data corresponding to the pixels; and adjusting the amount of light supplied by a backlight unit according to the measured complexity of the image data.
    Type: Application
    Filed: August 15, 2014
    Publication date: August 27, 2015
    Inventors: Jai-Hyun Koh, Kyungsu Lee
  • Publication number: 20150235614
    Abstract: A display apparatus includes a backlight assembly, a driving circuit part, and a display panel. The backlight assembly emits light. The driving circuit part receives an image signal, converts the image signal into image data, and generates a driving signal based on the image data. The display panel includes at least one pixel in which a plurality of sub-pixels is arranged in a two row by four column array, wherein the panel receives the light to display an image in response to the driving signal, wherein two sub-pixels of the sub-pixels arranged in a first row of the array each comprise a white color filter and two sub-pixels of the sub-pixels arranged in a second row of the array each comprise a white color filter.
    Type: Application
    Filed: May 4, 2015
    Publication date: August 20, 2015
    Inventors: Ji-Sun KIM, Jai-Hyun KOH, Yeong-Keun KWON, Heendol KIM, Kuk-Hwan AHN, BONGHYUN YOU, Chongchul CHAI
  • Publication number: 20150219939
    Abstract: A method of driving a light source includes outputting a light source control signal controlling a plurality of light sources, and outputting a plurality of light source driving signals to the light sources, respectively, based on the light source control signal, wherein the light source driving signals have different bit values.
    Type: Application
    Filed: July 8, 2014
    Publication date: August 6, 2015
    Inventors: Kuk-Hwan AHN, Jai-Hyun KOH, Dong-Won PARK
  • Publication number: 20150213748
    Abstract: A display device includes pixel patterns to display an image. Each pixel pattern is repetitively arranged in row and column directions, including primary pixels, first complex pixels and second complex pixels. Each primary pixel is composed of two primary color sub-pixels configured to provide two primary colors of three primary colors, wherein the three primary colors comprise red, green and blue. Each first complex pixel is composed of one primary color sub-pixel configured to provide a remaining primary color of the three primary colors and a first non-primary color sub-pixel configured to provide a first color selected from non-primary colors, wherein the non-primary colors are different from the three primary colors. Each complex pixel is composed of one primary color sub-pixel configured to provide the remaining primary color and a second non-primary color sub-pixel configured to provide a second color selected from the non-primary colors.
    Type: Application
    Filed: January 26, 2015
    Publication date: July 30, 2015
    Inventors: Sungjae Park, Jai-Hyun Koh, Se Ah Kwon, Jinpil Kim, Kyungsu Lee, Ik Soo Lee
  • Publication number: 20150213627
    Abstract: A method of driving an image includes receiving fundamental image data that includes a plurality of first main colors; converting the fundamental image data into output image data that includes a plurality of second main colors; calculating corrected brightness values of the second main colors that correct a decreased apparent brightness of the second main colors when the first main colors include a saturated color; and delaying application of the calculated corrections based on a brightness decrease speed that is determined based on at least one of an image change speed and an image change level.
    Type: Application
    Filed: August 22, 2014
    Publication date: July 30, 2015
    Inventors: KUK-HWAN AHN, Jai-Hyun Koh, Heendol Kim
  • Publication number: 20150170590
    Abstract: A liquid crystal display and a method for driving the same. The liquid crystal display includes: gate lines arranged in a row direction; data lines arranged in a column direction; and subpixels arranged in basic units of eight subpixels. Each subpixel is each connected to one of the gate lines and one of the data lines, and the subpixels are continuously arranged along a row and are arranged in a matrix. In the basic units, polarities between adjacent subpixels from a first subpixel to a fourth subpixel along the row are opposite to each other, polarities between adjacent subpixels from a fifth subpixel to an eighth subpixel along the row are opposite to each other, and polarities of the fourth subpixel and the fifth subpixel are the same.
    Type: Application
    Filed: July 10, 2014
    Publication date: June 18, 2015
    Inventors: Kuk-Hwan AHN, Jai-Hyun KOH, Jin Pil KIM, Kyung Su LEE, Ik Soo LEE, Nam Jae LIM
  • Patent number: 9052089
    Abstract: A display panel includes a pixel group having first through fourth pixels disposed in a two-by-two matrix form. Each of the first through fourth pixels includes at least three subpixels. The first and second pixels have the same subpixel layout. The third pixel has a different subpixel layout from the first pixel. The fourth pixel has a different subpixel layout from the first and third pixels.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: June 9, 2015
    Assignee: SAMSUNG DISLAY CO., LTD.
    Inventors: Se Ah Kwon, Jai-Hyun Koh, Ik-Soo Lee, Kuk-Hwan Ahn
  • Patent number: 9047827
    Abstract: A display apparatus includes a backlight assembly, a driving circuit part, and a display panel. The backlight assembly emits light. The driving circuit part receives an image signal, converts the image signal into image data, and generates a driving signal based on the image data. The display panel includes at least one pixel in which a plurality of sub-pixels is arranged in a two row by four column array, wherein the panel receives the light to display an image in response to the driving signal, wherein two sub-pixels of the sub-pixels arranged in a first row of the array each comprise a white color filter and two sub-pixels of the sub-pixels arranged in a second row of the array each comprise a white color filter.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: June 2, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Sun Kim, Jai-Hyun Koh, Yeong-Keun Kwon, Heendol Kim, Kuk-Hwan Ahn, Bonghyun You, Chongchul Chai
  • Patent number: 8988360
    Abstract: A method for detecting a touch position includes integrating a readout current detected at a sensing part to generate an integrated readout voltage, converting the integrated readout voltage into a digital converted readout voltage data and compensating a variation of the digital converted readout voltage data to determine whether the sensing part is touched.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: March 24, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seiki Takahashi, Satoru Saito, Sang-Soo Kim, Bong-Hyun You, Byoung-Jun Lee, Jai-Hyun Koh
  • Patent number: 8976208
    Abstract: A display device which includes pixels, a plurality of gate lines, a plurality of data lines, a gate driver configured to drive the plurality of gate lines, a data driver configured to drive the plurality of data lines, and a timing controller configured to control the gate driver and the data driver. The timing controller receives a first image signal and outputs a second image signal to the data driver. The timing controller sequentially outputs a boosting signal and the first image signal as the second image signal. The boosting signal is based on the first image signal and the previous first image signal.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: March 10, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jinpil Kim, Jai-Hyun Koh, Se Ah Kwon, Heendol Kim, Kuk-Hwan Ahn, Iksoo Lee, Namjae Lim
  • Publication number: 20150062191
    Abstract: A method of driving a light-source which provides a display panel displaying a picture during at least one frame period with light, includes determining a dimming-level configured to control a luminance of the light based on image data, determining whether the dimming-level of a current picture corresponds to a repetition dimming mode based on the dimming-level of a first previous picture, the first previous picture being displayed on the display panel prior to the current picture, and determining the dimming-level of the current picture to a fixed dimming-level in the repetition dimming mode.
    Type: Application
    Filed: July 24, 2014
    Publication date: March 5, 2015
    Inventors: Heen-Dol KIM, Jai-Hyun KOH, Jin-Pil KIM, Hyun-Kyu NAMKUNG, Seok-Yun SON, Kuk-Hwan AHN
  • Patent number: 8928685
    Abstract: A method of processing an image signal includes: converting a source image signal into an image signal corresponding to a color space for a color gamut mapping; reducing a color gamut of the image signal; and mapping the image signal corresponding to colors within the reduced color gamut into an image signal corresponding to colors within a display color gamut, wherein the colors of the display color gamut are displayed by a display panel.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: January 6, 2015
    Assignees: Samsung Display Co., Ltd., Korea Polytechnic University Industry-Academy Corporation Foundation
    Inventors: Heen-dol Kim, Ik-Soo Lee, Bong-Hyun You, Jai-Hyun Koh, Kuk-Hwan Ahn, Moon-Cheol Kim
  • Publication number: 20140306983
    Abstract: A data processing device, which processes and provides data to a plurality of logical pixels of a display device, includes: a data analysis part which analyzes information of text, color, line or edge in each of the data; and a data compensation part which compensates text data corresponding to a logical pixel which does not express text color among the data having the information of text based on the information analyzed in the data analysis part, where each of the logical pixels of the display device comprises at least one of red, green, blue and optional color sub-pixels.
    Type: Application
    Filed: April 11, 2014
    Publication date: October 16, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Sungjae PARK, Jai-Hyun KOH, Se Ah KWON, Seokyun SON, IK SOO LEE
  • Publication number: 20140232624
    Abstract: A display device includes a display panel including gate lines which extends in a first direction, data lines which extends in a second direction, and sub-pixels connected to corresponding gate and data lines, a gate driver configured to drive the gate lines, a data driver configured to apply a gray-scale voltage to the data lines, and a timing controller configured to generate and apply control signals to the gate and data drivers, where a unit pixel of the display panel is defined by an even number of adjacent sub-pixels among the sub-pixels, each of the data lines is connected to corresponding sub-pixels of the sub-pixels, the data driver inverts a polarity of the gray-scale voltage every two data lines, and two adjacent sub-pixels in the unit pixel are applied with the gray-scale voltages having different polarities.
    Type: Application
    Filed: July 3, 2013
    Publication date: August 21, 2014
    Inventors: Jinpil KIM, Jai-Hyun KOH, Namjae LIM, IK SOO LEE, Heendol KIM, Se Ah KWON, Kisoo PARK, JONGHAK HWANG
  • Publication number: 20140204321
    Abstract: The present invention provides a display device including a first block including a first primary color pixel and a second primary color pixel having substantially a same area, a second block alternatingly disposed with the first block along the first direction, the second block including a third primary color pixel, a fourth primary color pixel and a white pixel. The first block and the second block have substantially a same area and the third primary color pixel has an area wider than the fourth primary color pixel and the white color pixel.
    Type: Application
    Filed: December 10, 2013
    Publication date: July 24, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Jai-Hyun KOH, Se Ah KWON, Heen Dol KIM, Kuk-Hwan AHN, Ik Soo LEE