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).

  • Patent number: 9905173
    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: Grant
    Filed: July 10, 2014
    Date of Patent: February 27, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kuk-Hwan Ahn, Jai-Hyun Koh, Jin Pil Kim, Kyung Su Lee, Ik Soo Lee, Nam Jae Lim
  • Patent number: 9900586
    Abstract: A 3D image display device includes a display device including a plurality of pixels and displaying each of a left-eye image and a right-eye image. The display device inserts an black image between the left-eye image and the right-eye image such that the left-eye image is displayed for part of four frames and the black image is displayed for the remaining frames and the right-eye image is displayed for part of four other frames and the black image is displayed for the remaining other frames.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: February 20, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jai-Hyun Koh, Bong-Hyun You, Jae-Sung Bae
  • Patent number: 9835908
    Abstract: A display apparatus includes gate lines extending in a first direction, data lines extending in a second direction crossing the first direction, and pixels connected to the gate lines and the data lines. The pixels include pixels arranged in a k-th column between a k-th data line and a (k+1)th data line. The pixels arranged in the k-th column are arranged in a plurality of groups, and each of the groups includes 2i first pixels connected to the k-th data line and 2i second pixels connected to the (k+1)th data line. Successive ones of the pixels in each group are connected to the k-th data line and the (k+1)th data line in alternating manner.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: December 5, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Namjae Lim, Hyunkyu Namkung, Jai-hyun Koh, Iksoo Lee
  • Patent number: 9805480
    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: Grant
    Filed: August 22, 2014
    Date of Patent: October 31, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kuk-Hwan Ahn, Jai-Hyun Koh, Heendol Kim
  • Publication number: 20170309214
    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 7, 2017
    Publication date: October 26, 2017
    Inventors: Sungjae Park, Jai-Hyun KOH, Yu-Kwan KIM, Jinpil KIM, Iksoo LEE, Namjae LIM
  • Patent number: 9792877
    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: Grant
    Filed: April 11, 2014
    Date of Patent: October 17, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD
    Inventors: Sungjae Park, Jai-Hyun Koh, Se Ah Kwon, Seokyun Son, Ik Soo Lee
  • Publication number: 20170256228
    Abstract: A display apparatus includes a timing controller, a data driver and a display panel. The timing controller generates a mode selection signal and output image data in response to input image data. The data driver generates first through N-th data voltages in response to the mode selection signal and the output image data and applies the first through N-th data voltages to first through N-th data lines. The display panel is connected to the first through N-th data lines. During the first operation mode, each of a polarity pattern of first through M-th data voltages and a polarity pattern of (M+1)-th through N-th data voltages repeats a first polarity pattern. During the second operation mode, the polarity pattern of the first through M-th data voltages repeats the first polarity pattern, and the polarity pattern of the (M+1)-th through N-th data voltages repeats a second polarity pattern.
    Type: Application
    Filed: January 11, 2017
    Publication date: September 7, 2017
    Inventors: JAEHOON LEE, JAI-HYUN KOH, CHANG SIN KIM, BONGHYUN YOU, JEONG BONG LEE
  • Patent number: 9728116
    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: Grant
    Filed: July 10, 2015
    Date of Patent: August 8, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sungjae Park, Jai-Hyun Koh, Yu-Kwan Kim, Jinpil Kim, Iksoo Lee, Namjae Lim
  • Patent number: 9728154
    Abstract: Disclosed is a display apparatus including: a display panel including a plurality of pixels each for displaying an image corresponding to a data signal; and a timing controller configured to receive an image signals and to convert the image signal into the data signal to be supplied to the display panel, wherein the timing controller is further configured to convert the image signal into an intermediate data signal and to generate the data signal, which corresponds to a k-th pixel, on a basis of intermediate data signals corresponding to a (k?1)-th pixel, the k-th pixel and a (k+1)-th pixel of the plurality of pixels, wherein the data signal corresponding to a first pixel of the plurality of pixels includes first and second color signals and the data signal corresponding to a second pixel of the plurality of pixels includes third and fourth color signals.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: August 8, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Heendol Kim, Jai-Hyun Koh, Jinpil Kim, Seokyun Son, Ik Soo Lee
  • Publication number: 20170221443
    Abstract: A display panel driving apparatus includes a data driving part, a comparing part, a data signal controlling part, and a gate driving part. The data driving part generates a dummy data signal in response to dummy image data, outputs the dummy data signal to a dummy data line of a display panel, generates a data signal in response to image data, and outputs the data signal to a data line of the display panel. The comparing part outputs a comparison signal in response to the dummy data signal and a delayed dummy data signal generated due to a load of the dummy data line. The comparison signal indicates how much the delayed dummy data signal is delayed with respect to the dummy data signal. The data signal controlling part controls the data signal using the comparison signal.
    Type: Application
    Filed: January 9, 2017
    Publication date: August 3, 2017
    Inventors: JAI-HYUN KOH, Jaehoon Lee, Dong-Won Park, Mun-San Park, Bonghyun You, Seokha Hong
  • Patent number: 9721517
    Abstract: A display device according to the present disclosure includes a plurality of gate lines extending in a row direction, a plurality of data lines intersecting with the gate lines, the data lines extending in a column direction, a plurality of pixels connected to the gate lines and the data lines, and a data driving unit configured to output a plurality of data voltages to the pixels, wherein the data driving unit outputs the data voltages based on a first column inversion scheme and a second column inversion scheme to respective data lines along the column direction.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: August 1, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyunkyu Namkung, Seokyun Son, Jai-Hyun Koh, Heendol Kim, Kuk-Hwan Ahn
  • Patent number: 9715861
    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: Grant
    Filed: July 3, 2013
    Date of Patent: July 25, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD
    Inventors: Jinpil Kim, Jai-Hyun Koh, Namjae Lim, Ik Soo Lee, Heendol Kim, Se Ah Kwon, Kisoo Park, Jonghak Hwang
  • Publication number: 20170186386
    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: March 10, 2017
    Publication date: June 29, 2017
    Inventors: Seokha HONG, TAEJIN KIM, Ahyoung SON, BONGHYUN YOU, Jai-Hyun KOH, Sang-Uk LIM
  • Patent number: 9664943
    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: Grant
    Filed: December 10, 2013
    Date of Patent: May 30, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jai-Hyun Koh, Se Ah Kwon, Heen Dol Kim, Kuk-Hwan Ahn, Ik Soo Lee
  • Patent number: 9659518
    Abstract: A method of driving a display panel, the method including analyzing input image data, determining a driving method of the display panel as one of a progressive driving method and an interlace driving method, and rearranging the input image data according to the determined one of the progressive driving method and the interlace driving method.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: May 23, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jai-Hyun Koh, Heen-Dol Kim, Kuk-Hwan Ahn, Ik-Soo Lee
  • Publication number: 20170110044
    Abstract: A signal processing circuit includes an input gamma adjuster configured to adjust gamma characteristics of an image signal and to output a gamma adjustment image signal, an image signal processor configured to generate a scaling signal corresponding to image characteristics of the gamma adjustment image signal and to convert the gamma adjustment image signal into an intermediate data signal in response to the scaling signal, and an output gamma adjuster configured to convert the intermediate data signal into a data signal on a basis of a first lookup table corresponding to a first gamma curve, a second lookup table corresponding to a second gamma curve, and the scaling signal.
    Type: Application
    Filed: May 24, 2016
    Publication date: April 20, 2017
    Inventors: Kuk-Hwan Ahn, Jai-Hyun Koh, Heendol Kim, Jin-Kyu Park, Seokyun Son, Junghwan Cho
  • Patent number: 9613577
    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: Grant
    Filed: December 1, 2014
    Date of Patent: April 4, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seokha Hong, Taejin Kim, Ahyoung Son, Bonghyun You, Jai-Hyun Koh, Sang-Uk Lim
  • Patent number: 9595236
    Abstract: A data driver for a display includes: a polarity signal generator outputting polarity control signals for setting polarity patterns of data voltages such that pixels have the same polarity inversion pattern for every 2h number of pixels (where h is a natural number) in each pixel row defined by pixels that are arranged on the same row and have the same polarity inversion pattern for every 2k number of pixel rows (where k is a natural number) in a column direction; and a data voltage generator determining polarities of the data voltages in response to the polarity control signal to provide the determined polarities of the data voltages to the pixels.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: March 14, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jinpil Kim, Jai-Hyun Koh, Ik Soo Lee
  • Publication number: 20170069274
    Abstract: A display apparatus includes a display panel for displaying an image and that includes a plurality of display areas, a light source part for providing a light to the display panel, a luminance measurer for measuring a luminance of each display area of the display panel and outputting a panel luminance signal of each display area of the display panel, and a light source driver for driving the light source part based on the panel luminance signal to decrease the light source luminance signal of each display area of the display panel when the panel luminance signal of each display area of the display panel increases and to increase the light source luminance signal of each display area of the display panel when the panel luminance signal of each display area of the display panel decreases.
    Type: Application
    Filed: March 17, 2016
    Publication date: March 9, 2017
    Inventors: JIN-KYU PARK, JAI-HYUN KOH, JOON-CHUL GOH, SEOK-YUN SON, KUK-HWAN AHN
  • Patent number: 9589494
    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: Grant
    Filed: January 26, 2015
    Date of Patent: March 7, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sungjae Park, Jai-Hyun Koh, Se Ah Kwon, Jinpil Kim, Kyungsu Lee, Ik Soo Lee