Patents by Inventor Kang-Hyun Kim

Kang-Hyun 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: 9318542
    Abstract: An organic light emitting diode display device includes a substrate including a display region, wherein a plurality of pixel regions are defined in the display region; a first electrode over the substrate and in each of the plurality of pixel regions; a bank including a lower layer and an upper layer on the first electrode, the lower layer disposed on edges of the first electrode and having a first width and a first thickness, the upper layer disposed on the lower layer and having a second width smaller than the first width; an organic emitting layer on the first electrode and a portion of the lower layer; and a second electrode on the organic emitting layer and covering an entire surface of the display region.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: April 19, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Dae-Jung Choi, Jae-Ki Lee, Ki-Soub Yang, Hwang-Un Seo, Hong-Myeong Jeon, Seung-Ryul Choi, A-Ryoung Lee, Han-Hee Kim, Geum-Young Lee, Kang-Hyun Kim
  • Patent number: 9292942
    Abstract: Provided are an image signal compensation apparatus and a liquid crystal display (LCD) including the same. The image signal compensation apparatus includes a lookup table (LUT) and an image signal compensation unit. The LUT includes reference data that corresponds to each combination of first and second reference gray levels and is arranged in a matrix. The image signal compensation unit receives first and second image signals, receives reference data corresponding to the first and second image signals from the LUT, and compensates the second image signal using the reference data. The reference data includes diagonal reference data located on a diagonal line in the matrix, and at least one diagonal reference data from among the diagonal reference data has a different value from a corresponding combination of the first and second reference gray levels.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: March 22, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Bong-Im Park, Bong-Ju Jun, Yun-Jae Kim, Jae-Won Jeong, Yong-Jun Choi, Dong-Beom Cho, Woo-Jin Jung, Kang-Hyun Kim
  • Publication number: 20160019865
    Abstract: A method of displaying an image on a display panel which comprises a plurality of pixels arranged as a matrix type includes measuring a tristimulus value of X, Y and Z values of a displayed image to generate a target curve, generating a corrected grayscale data of a red pixel, a green pixel and a blue pixel using X, Y and Z values of the target curve and converting the corrected grayscale data to a data voltage to provide a data line of the display panel with the data voltage.
    Type: Application
    Filed: January 27, 2015
    Publication date: January 21, 2016
    Inventors: Jung-Suk HAN, Hoi-Sik MOON, Kang-Hyun KIM, Jong-Hee NA, Jun-Il PARK, Woo-Jin JUNG, Jae-Seob CHUNG
  • Patent number: 9231035
    Abstract: An organic light emitting diode display device includes a substrate including a display region, wherein a plurality of pixel regions are defined in the display region; a first electrode over the substrate and in each of the plurality of pixel regions; a first bank on edges of the first electrode; a second bank on an upper surface of the first bank and covering only a portion of the first bank; an organic emitting layer on the first electrode and a portion of the first bank; and a second electrode on the organic emitting layer and covering an entire surface of the display region.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: January 5, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Kang-Hyun Kim, Ki-Soub Yang, Dae-Jung Choi, Seung-Ryul Choi, A-Ryoung Lee, Han-Hee Kim
  • Publication number: 20150333110
    Abstract: Disclosed an organic electroluminescent device and a method for fabricating the same. The device may include a thin film transistor disposed on a substrate; a first electrode formed for each pixel on the thin film transistor; a first pixel define layer formed to cover an edge portion of the first electrode; a second pixel define layer formed on the first pixel define layer; an organic layer formed on the first electrode; and a second electrode formed on the organic layer.
    Type: Application
    Filed: December 23, 2013
    Publication date: November 19, 2015
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Kyoung Jin PARK, Ki Soub YANG, Dae Jung CHOI, Seung Ryul CHOI, Han Hee KIM, Kang Hyun KIM, Ji Hyun Lee
  • Patent number: 9183809
    Abstract: A display panel apparatus includes a display panel and a timing controller, and a data driver. The display panel includes a first subpixel and a second subpixel. The timing controller is configured to receive a first subpixel data for the first subpixel and a second subpixel data for the second subpixel. When the second subpixel is determined to be defective, the timing controller generates a compensated grayscale of the second subpixel data. The data driver is configured to apply a precharge voltage to the second subpixel and a charging voltage to second subpixel through a data line, wherein the precharge voltage is based on a grayscale of the first subpixel data and the charging voltage is based on the compensated grayscale of the second subpixel data.
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: November 10, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae-Won Jeong, Woo-Jin Jung, Kang-Hyun Kim, Po-Yun Park, Kwan-Young Oh, Jee-Hoon Jeon, Youn-Jin Jung, Young-Suk Ha
  • Publication number: 20150249117
    Abstract: An organic light emitting diode display device includes a substrate including a display region, wherein a plurality of pixel regions are defined in the display region; a first electrode over the substrate and in each of the plurality of pixel regions; a bank including a lower layer and an upper layer on the first electrode, the lower layer disposed on edges of the first electrode and having a first width and a first thickness, the upper layer disposed on the lower layer and having a second width smaller than the first width; an organic emitting layer on the first electrode and a portion of the lower layer; and a second electrode on the organic emitting layer and covering an entire surface of the display region.
    Type: Application
    Filed: March 10, 2015
    Publication date: September 3, 2015
    Inventors: Dae-Jung Choi, Jae-Ki Lee, Ki-Soub Yang, Hwang-Un Seo, Hong-Myeong Jeon, Seung-Ryul Choi, A-Ryoung Lee, Han-Hee Kim, Geum-Young Lee, Kang-Hyun Kim
  • Patent number: 9123675
    Abstract: An organic light emitting diode display device includes a first substrate including a display region, wherein a plurality of pixel regions are defined in the display region; a first electrode over the first substrate and in each of the plurality of pixel regions; a first bank on edges of the first electrode and including an insulating material blocking penetration of light; a second bank on the first bank and including an insulating material having a hydrophobic property; an organic light emitting layer on the first electrode and a portion of the first bank; and a second electrode on the organic light emitting layer and covering an entire surface of the display region.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: September 1, 2015
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kang-Hyun Kim, Ki-Soub Yang, Dae-Jung Choi, Seung-Ryul Choi, Han-Hee Kim, Kyoung-Jin Park
  • Patent number: 9105876
    Abstract: A method of fabricating an organic light emitting diode display device having improved effective emitting area includes forming a first electrode over a substrate including a display region, which includes a plurality of pixel regions; forming the first bank on edges of the first electrode having a first width, and the second bank formed on the first bank having a second width smaller than the first width; forming an organic emitting layer on the first electrode and a portion of the first bank; and forming a second electrode on a organic emitting layer; patterning the second bank material layer to form a bank pattern; patterning the first bank using the bank pattern as an etching mask to form the first bank; and partially etching the bank pattern to form the second bank such that the first bank protrudes from the second bank by a third width.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: August 11, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Dae-Jung Choi, Ki-Soub Yang, Seung-Ryul Choi, Han-Hee Kim, Kang-Hyun Kim
  • Patent number: 9091661
    Abstract: A method of measuring damage of an organic layer of a thin film encapsulation includes: preparing a thin film encapsulation structure in which an inorganic layer is stacked on an organic layer, in which a light-emitting material is mixed; irradiating light to the thin film encapsulation structure so that light is emitted from the light-emitting material, the intensity of light emitted from the light emitting material decreasing over time; detecting a light emission lifetime of the light emitted from the light emitting material; and determining a degree of damage to the organic layer based on the light emission lifetime. Accordingly, a degree of the damage to the organic layer due to plasma may be easily detected, and the damage to the organic layer may be minimized based on the detected degree of the damage by improving plasma process conditions for an operation of forming an inorganic layer.
    Type: Grant
    Filed: September 28, 2013
    Date of Patent: July 28, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki-Young Yeon, Na-Ri Ahn, Kang-Hyun Kim, Jung-Hwa Park
  • Publication number: 20150194105
    Abstract: A method of reducing a total, per device, measurements taking time in a calibration system that uses a sensor array that serially reports out its readings and a data processing unit that needs to receive the reported out readings in good order before allowing an under-measurement first display device to advance away from a measurements taking station includes the step of not driving the first display device with all of required full screen test images where each is a full screen display of only a respective one of a predetermined minimum number of grayscale values produced as a minimum number of needed full screen sample images and; in place of at least a first plurality of the not-produced full screen images, driving the under-measurement first display device with a partial screen multi-pattern that presents a plurality of different grayscale values including ones not presented by those of all of the full screen test images that are used to drive the under-measurement first display device.
    Type: Application
    Filed: July 25, 2014
    Publication date: July 9, 2015
    Inventors: Jung-Suk HAN, Hoi-Sik MOON, Kang-Hyun KIM, Jong-Hee NA, Woo-Jin JUNG, Jae-Seob CHUNG
  • Patent number: 8941100
    Abstract: An organic light emitting display apparatus includes a first electrode, a hole injection layer disposed on the first electrode, a light emitting layer disposed on the hole injection layer, an electron injection layer disposed on the light emitting layer, a chlorine-doped layer disposed on the electrode injection layer and including chlorine and a same material as the electron injection layer, and a second electrode disposed on the chlorine-doped layer.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: January 27, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kang-Hyun Kim, Hyun-Ju Lee
  • Publication number: 20150001486
    Abstract: An organic light emitting diode display device includes a first substrate including a display region, wherein a plurality of pixel regions are defined in the display region; a first electrode over the first substrate and in each of the plurality of pixel regions; a first bank on edges of the first electrode and including an insulating material blocking penetration of light; a second bank on the first bank and including an insulating material having a hydrophobic property; an organic light emitting layer on the first electrode and a portion of the first bank; and a second electrode on the organic light emitting layer and covering an entire surface of the display region.
    Type: Application
    Filed: December 5, 2013
    Publication date: January 1, 2015
    Applicant: LG Display Co., Ltd.
    Inventors: Kang-Hyun KIM, Ki-Soub YANG, Dae-Jung CHOI, Seung-Ryul CHOI, Han-Hee KIM, Kyoung-Jin PARK
  • Patent number: 8884860
    Abstract: A liquid crystal display includes an image signal modifier for generating a modified signal based on a first image signal of a first frame, a second image signal of a second frame, and a lookup table. A data driver converts the modified signal into a data voltage which is supplied to a pixel of the display. The lookup table stores a plurality of reference modified signals for a plurality of reference first image signals and a plurality of reference second image signals. The lookup table includes a first lookup table having a gray gap of the reference first image signals and a gray gap of the reference second image signals of x, and a second lookup table having a gray gap of the reference first image signals and a gray gap of the reference second image signals of y, where y is greater than x.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: November 11, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Woo-Young Lee, Jae-Won Jeong, Woo-Jin Jung, Kang-Hyun Kim, Duc-Han Cho, Su-Bin Park
  • Publication number: 20140320853
    Abstract: A method of measuring damage of an organic layer of a thin film encapsulation includes: preparing a thin film encapsulation structure in which an inorganic layer is stacked on an organic layer, in which a light-emitting material is mixed; irradiating light to the thin film encapsulation structure so that light is emitted from the light-emitting material, the intensity of light emitted from the light emitting material decreasing over time; detecting a light emission lifetime of the light emitted from the light emitting material; and determining a degree of damage to the organic layer based on the light emission lifetime. Accordingly, a degree of the damage to the organic layer due to plasma may be easily detected, and the damage to the organic layer may be minimized based on the detected degree of the damage by improving plasma process conditions for an operation of forming an inorganic layer.
    Type: Application
    Filed: September 28, 2013
    Publication date: October 30, 2014
    Inventors: Ki-Young Yeon, Na-Ri Ahn, Kang-Hyun Kim, Jung-Hwa Park
  • Publication number: 20140306984
    Abstract: Disclosed are a display device and a driving method thereof. The display device includes: a first lookup table that stores first color compensation data optimized to display a first color; a second lookup table that stores second color compensation data optimized to display a second color different from the first color; and a color compensating unit that refers to the first lookup table and the second lookup table.
    Type: Application
    Filed: August 1, 2013
    Publication date: October 16, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Jae-Suk Choi, Hoi Sik Moon, Woo-Young Lee, Kang-Hyun KIM, Woo-Jin Jung, Jae-Seob Chung
  • Patent number: 8854350
    Abstract: Provided is a liquid crystal display for improving side visibility by calculating a representative value for image data and correcting at least one of a storage voltage Vcst, a reference voltage Vref, and a lookup table LUT according to the calculated representative value. Further, a histogram analysis block is formed inside or outside a signal controller and corrects at least one of the storage voltage Vcst, the reference voltage Vref, and the lookup table LUT based on the histogram analysis block.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: October 7, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Won Jeong, Su-Bin Park, Woo-Jin Jung, Woo-Young Lee, Kang-Hyun Kim, Duc-Han Cho
  • Patent number: 8847931
    Abstract: A driving apparatus of a liquid crystal display includes a signal modification unit which modifies a signal based on a data signal input to the liquid crystal display, where the signal modification unit determines whether the data signal corresponds to an image to be displayed with a quality deterioration and outputs at least one of a first signal and a second signal, where the first signal is output when the signal modification unit determines the data signal corresponds to the image to be displayed with the quality deterioration, and where the second signal is output when the signal modification unit determines the data signal does not corresponds to the image to be displayed with the quality deterioration.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: September 30, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Won Jeong, Hoi Sik Moon, Woo-Jin Jung, Woo-Young Lee, Kang-Hyun Kim, Duc-Han Cho, Su-Bin Park
  • Publication number: 20140231757
    Abstract: An organic light emitting display apparatus includes a first electrode, a hole injection layer disposed on the first electrode, a light emitting layer disposed on the hole injection layer, an electron injection layer disposed on the light emitting layer, a chlorine-doped layer disposed on the electrode injection layer and including chlorine and a same material as the electron injection layer, and a second electrode disposed on the chlorine-doped layer.
    Type: Application
    Filed: June 19, 2013
    Publication date: August 21, 2014
    Inventors: Kang-Hyun KIM, Hyun-Ju LEE
  • Patent number: 8810496
    Abstract: A liquid crystal display includes a timing controller and a liquid crystal panel. The timing controller sequentially receives first through third primitive image signals and sequentially outputs first through third corrected image signals. The liquid crystal panel displays an image based on the first through third corrected image signals. The timing controller generates a first converted image signal having a first gray level based on the first primitive image signal and stores the first converted image signal. The second primitive image signal has a second gray level and the timing controller generates a second converted image signal having a third gray level higher than the second gray level when the second gray level is lower than the first gray level. The timing controller generates the third corrected image signal using the second converted image signal and the third primitive image signal.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: August 19, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Bong-Im Park, Kang-Hyun Kim, Jong-Hyon Park, Woo-Chul Kim, Yun-Jae Kim, Jae-Won Jeong, Bong-Ju Jun, Yong-Jun Choi, Woo-Young Lee