Patents by Inventor Yu Hoon Kim

Yu Hoon Kim 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: 11804168
    Abstract: In at least one embodiment, a display device includes a panel including a display area in which a plurality of pixels is arranged. An optical module is superposed on the display area. The display area has a low-resolution area having a polygonal shape and superposed on the optical module and a high-resolution area neighboring the low-resolution area, unit pixels having the same size as those of the high-resolution area are arranged in a lower pixel density than that of the high-resolution area and transmission areas are disposed adjacent to the unit pixels in the low-resolution area, and unit pixels and transmission areas are arranged in different forms in a boundary area of the high-resolution area neighboring the low-resolution area according to slopes of the boundary area.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: October 31, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Jong-Hwan Ock, Yu-Hoon Kim, Jung-Geun Jo
  • Patent number: 11436969
    Abstract: The present disclosure relates to a display device and a method for driving the same which can improve color unevenness in a low-grayscale (low-luminance) area and improve color accuracy and grayscale expression, and an image processor of a display device according to an embodiment identifies a low-grayscale area less than a threshold value according to an input maximum luminance and applies a grayscale reproduction mask thereto to reproduce a luminance of the low-grayscale area as a combination of the threshold value and a minimum value.
    Type: Grant
    Filed: July 13, 2021
    Date of Patent: September 6, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Jung-Geun Jo, Tae-Uk Kim, Yu-Hoon Kim
  • Publication number: 20220013598
    Abstract: A display device includes a first display area including a plurality of first pixel groups, and a second display area including a plurality of second pixel groups and a plurality of light-transmitting areas. Each of the plurality of second pixel groups includes a plurality of sub-pixels, and in any one sub-pixel of the plurality of sub-pixels, a light-emitting element is disposed in a light-transmitting area from the plurality of light-transmitting areas that corresponds to the any one sub-pixel.
    Type: Application
    Filed: July 6, 2021
    Publication date: January 13, 2022
    Inventors: Sung Jin PARK, Juhn Suk YOO, Min Ha KANG, Yu Hoon KIM
  • Publication number: 20210343223
    Abstract: The present disclosure relates to a display device and a method for driving the same which can improve color unevenness in a low-grayscale (low-luminance) area and improve color accuracy and grayscale expression, and an image processor of a display device according to an embodiment identifies a low-grayscale area less than a threshold value according to an input maximum luminance and applies a grayscale reproduction mask thereto to reproduce a luminance of the low-grayscale area as a combination of the threshold value and a minimum value.
    Type: Application
    Filed: July 13, 2021
    Publication date: November 4, 2021
    Inventors: Jung-Geun JO, Tae-Uk KIM, Yu-Hoon KIM
  • Patent number: 11114018
    Abstract: The present disclosure relates to a display device and a method for driving the same which can improve color unevenness in a low-grayscale (low-luminance) area and improve color accuracy and grayscale expression, and an image processor of a display device according to an embodiment identifies a low-grayscale area less than a threshold value according to an input maximum luminance and applies a grayscale reproduction mask thereto to reproduce a luminance of the low-grayscale area as a combination of the threshold value and a minimum value.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: September 7, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jung-Geun Jo, Tae-Uk Kim, Yu-Hoon Kim
  • Publication number: 20210241680
    Abstract: In at least one embodiment, a display device includes a panel including a display area in which a plurality of pixels is arranged. An optical module is superposed on the display area. The display area has a low-resolution area having a polygonal shape and superposed on the optical module and a high-resolution area neighboring the low-resolution area, unit pixels having the same size as those of the high-resolution area are arranged in a lower pixel density than that of the high-resolution area and transmission areas are disposed adjacent to the unit pixels in the low-resolution area, and unit pixels and transmission areas are arranged in different forms in a boundary area of the high-resolution area neighboring the low-resolution area according to slopes of the boundary area.
    Type: Application
    Filed: January 5, 2021
    Publication date: August 5, 2021
    Inventors: Jong-Hwan OCK, Yu-Hoon KIM, Jung-Geun JO
  • Publication number: 20200388207
    Abstract: The present disclosure relates to a display device and a method for driving the same which can improve color unevenness in a low-grayscale (low-luminance) area and improve color accuracy and grayscale expression, and an image processor of a display device according to an embodiment identifies a low-grayscale area less than a threshold value according to an input maximum luminance and applies a grayscale reproduction mask thereto to reproduce a luminance of the low-grayscale area as a combination of the threshold value and a minimum value.
    Type: Application
    Filed: June 5, 2020
    Publication date: December 10, 2020
    Inventors: Jung-Geun JO, Tae-Uk KIM, Yu-Hoon KIM
  • Patent number: 10460641
    Abstract: Disclosed are an image processing circuit and image processing method which is capable of enhancing gray level presentation, and a display device using the same. The image processing circuit and image processing method performs a differential extension of each gray level to a higher gray level with respect to a perceived brightness picture level (PBPL) reflecting a distribution of high gray levels of the input image, and then overdrives a light emitting device in the region of high gray levels higher than or equal to the threshold gray level.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: October 29, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hong-Seop Shin, Kyong-Ho Lim, Yu-Hoon Kim
  • Publication number: 20160351102
    Abstract: Disclosed are an image processing circuit and image processing method which is capable of enhancing gray level presentation, and a display device using the same. The image processing circuit and image processing method performs a differential extension of each gray level to a higher gray level with respect to a perceived brightness picture level (PBPL) reflecting a distribution of high gray levels of the input image, and then overdrives a light emitting device in the region of high gray levels higher than or equal to the threshold gray level.
    Type: Application
    Filed: May 13, 2016
    Publication date: December 1, 2016
    Inventors: Hong-Seop SHIN, Kyong-Ho LIM, Yu-Hoon KIM
  • Patent number: 8049765
    Abstract: A color gamut mapping method, which is capable of minimizing a color difference perceived by a person, preventing brightness and contrast from deteriorating, and improving color reproducibility, and a liquid crystal display device using the same are disclosed.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: November 1, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Ji Young Ahn, Dong Woo Kang, Choon Woo Kim, Qiao Song Chen, Yu Hoon Kim
  • Publication number: 20090278768
    Abstract: A method and an apparatus for processing video data for display on a plasma display panel include dividing gray level values reverse gamma corrected with respect to input gray level values into an integer portion, an upper decimal fraction portion and a lower decimal fraction portion. The lower decimal fraction is then dithered, a first update value generated according to the lower decimal fraction dithering result is added to the upper decimal fraction portion, and the upper decimal fraction having the first update value added thereto is dithered. Finally, a second update value generated according to the upper decimal fraction dithering result is added to the integer portion.
    Type: Application
    Filed: May 5, 2009
    Publication date: November 12, 2009
    Inventors: Seung-Ho Park, Young-Sun Kim, Yu-Hoon Kim, Choon-Woo Kim
  • Publication number: 20090009539
    Abstract: A color gamut mapping method, which is capable of minimizing a color difference perceived by a person, preventing brightness and contrast from deteriorating, and improving color reproducibility, and a liquid crystal display device using the same are disclosed.
    Type: Application
    Filed: June 20, 2008
    Publication date: January 8, 2009
    Inventors: Ji Young Ahn, Dong Woo Kang, Choon Woo Kim, Qiao Song Chen, Yu Hoon Kim