Patents by Inventor Kyu-Il Han

Kyu-Il Han 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: 11943985
    Abstract: Discussed are a light-emitting device and a light-emitting display device having improved efficiency and increased lifespan. A plurality of stacks is provided between an anode and a cathode for at least a subpixel to emit a predetermined color, and emissive layers in different stacks include the same color-based materials having different luminous properties.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: March 26, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jin Ho Park, Kyu Il Han, Chang Hwan Kwak, Dong Hyeok Lim, Hwa Yong Shin, Ji Hyung Lee
  • Patent number: 11839127
    Abstract: Disclosed is a light emitting display device which prevents pixel shrinkage and improves reliability by changing the structure of a bank and the inner structures of light emitting devices outside an active area of the light emitting display device.
    Type: Grant
    Filed: June 2, 2021
    Date of Patent: December 5, 2023
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyu Il Han, Mi So Kim, Hwa Yong Shin, Ji Hyung Lee
  • Publication number: 20230209859
    Abstract: An organic light emitting diode includes a first emitting part including a first emitting material layer (EML) and a first electron transporting layer (ETL), a second emitting part including a second EML and between the first emitting part and the second electrode, an n-type charge generation layer (CGL) contacting the first ETL and between the first ETL and the second emitting part, and a p-type CGL contacting the n-type CGL and between the n-type CGL and the second emitting part. The first ETL includes a first compound, and the n-type CGL includes a second compound and an n-type dopant. A lowest unoccupied molecular orbital (LUMO) energy level of the first compound can be higher than a LUMO energy level of the second compound.
    Type: Application
    Filed: November 4, 2022
    Publication date: June 29, 2023
    Applicant: LG Display Co., Ltd.
    Inventors: Jeong-Dae SEO, Shin-Han KIM, Min-Surk HYUNG, Kyu-Il HAN, Jin-Ho PARK, Seung-Kwang ROH, Sun-Kap KWON
  • Publication number: 20220208876
    Abstract: Discussed are a light-emitting device and a light-emitting display device having improved efficiency and increased lifespan. A plurality of stacks is provided between an anode and a cathode for at least a subpixel to emit a predetermined color, and emissive layers in different stacks include the same color-based materials having different luminous properties.
    Type: Application
    Filed: June 7, 2021
    Publication date: June 30, 2022
    Applicant: LG Display Co., Ltd.
    Inventors: JIN HO PARK, KYU IL HAN, CHANG HWAN KWAK, DONG HYEOK LIM, HWA YONG SHIN, JI HYUNG LEE
  • Publication number: 20220208875
    Abstract: Disclosed is a light emitting display device which prevents pixel shrinkage and improves reliability by changing the structure of a bank and the inner structures of light emitting devices outside an active area of the light emitting display device.
    Type: Application
    Filed: June 2, 2021
    Publication date: June 30, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: KYU IL HAN, Mi So KIM, Hwa Yong SHIN, Ji Hyung LEE
  • Patent number: 11094762
    Abstract: Disclosed is a display device. In accordance with the display device, before an organic stack of a light-emitting diode is formed, a sticker is attached to a substrate, while a camera hole-forming portion and a margin area around the same are present, to form the organic stack, and the sticker and components on top of the sticker, such as the organic stack, are removed, so that the edge of the organic stack can be aligned without any additional process using separate masks and the reliability of the display device can be improved due to the provision of the organic stack at a location spaced apart from the camera hole by the margin area.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: August 17, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Kyu-Il Han, Nam-Seok Yoo, Jin-Ho Park, Mi-Na Kim, Hyung-Won Park, Jung-Mo Cho, Yu-Ri Park, Hyoung-Min Kim, Seung-Ho Son
  • Patent number: 10950680
    Abstract: A light-emitting display device includes a substrate having a plurality of subpixels; a first electrode provided in each of the subpixels; a bank defining an emission part in each of the subpixels and having an upper surface that has a larger degree of surface roughness than an upper surface of the first electrode; a first common layer over the subpixels and covering the first electrode and the bank; a light-emitting layer on the first common layer and corresponding to the emission part of each of the subpixels; and a second common layer and a second electrode stacked on the light-emitting layer over the plurality of subpixels.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: March 16, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Dong-Hyeok Lim, Song-Yi Jeong, Kyu-Il Han, Nam-Seok Yoo, Yu-Ri Park
  • Publication number: 20200212147
    Abstract: Disclosed is a display device. In accordance with the display device, before an organic stack of a light-emitting diode is formed, a sticker is attached to a substrate, while a camera hole-forming portion and a margin area around the same are present, to form the organic stack, and the sticker and components on top of the sticker, such as the organic stack, are removed, so that the edge of the organic stack can be aligned without any additional process using separate masks and the reliability of the display device can be improved due to the provision of the organic stack at a location spaced apart from the camera hole by the margin area.
    Type: Application
    Filed: December 23, 2019
    Publication date: July 2, 2020
    Inventors: Kyu-Il HAN, Nam-Seok YOO, Jin-Ho PARK, Mi-Na KIM, Hyung-Won PARK, Jung-Mo CHO, Yu-Ri PARK, Hyoung-Min KIM, Seung-Ho SON
  • Patent number: 10553808
    Abstract: An organic light-emitting display device has improved transmittance and UV light reliability by optimizing the thickness and material of a cathode. An organic light-emitting display device comprises an organic light-emitting element on a substrate, the organic light-emitting element including an anode, an organic light emitting layer, and a cathode, an organic layer between the substrate and the organic light-emitting element, and an auxiliary layer adjacent to the cathode and including a material having electron injection ability, such that the influence of UV lights on the OLED device is reduced, thereby improving the efficiency and lifespan of the organic light-emitting element.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: February 4, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Sun Kap Kwon, Kwan Soo Kim, Kyu Il Han, Kwang Hyun Kim, Mi Na Kim
  • Publication number: 20200006458
    Abstract: A light-emitting display device includes a substrate having a plurality of subpixels; a first electrode provided in each of the subpixels; a bank defining an emission part in each of the subpixels and having an upper surface that has a larger degree of surface roughness than an upper surface of the first electrode; a first common layer over the subpixels and covering the first electrode and the bank; a light-emitting layer on the first common layer and corresponding to the emission part of each of the subpixels; and a second common layer and a second electrode stacked on the light-emitting layer over the plurality of subpixels.
    Type: Application
    Filed: June 26, 2019
    Publication date: January 2, 2020
    Applicant: LG Display Co., Ltd.
    Inventors: Dong-Hyeok LIM, Song-Yi JEONG, Kyu-Il HAN, Nam-Seok YOO, Yu-Ri PARK
  • Publication number: 20180062104
    Abstract: An organic light-emitting display device has improved transmittance and UV light reliability by optimizing the thickness and material of a cathode. An organic light-emitting display device comprises an organic light-emitting element on a substrate, the organic light-emitting element including an anode, an organic light emitting layer, and a cathode, an organic layer between the substrate and the organic light-emitting element, and an auxiliary layer adjacent to the cathode and including a material having electron injection ability, such that the influence of UV lights on the OLED device is reduced, thereby improving the efficiency and lifespan of the organic light-emitting element.
    Type: Application
    Filed: August 9, 2017
    Publication date: March 1, 2018
    Inventors: Sun Kap KWON, Kwan Soo KIM, Kyu Il HAN, Kwang Hyun KIM, Mi Na KIM
  • Patent number: 8421338
    Abstract: The present invention relates to an organic luminescence display panel and a method for fabricating the same which can improve a lifetime and luminous efficiency of an organic luminescence display device.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: April 16, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Kwang-Hyun Kim, Sung-Hoon Choi, Kyu-Il Han
  • Publication number: 20100052522
    Abstract: The present invention relates to an organic luminescence display panel and a method for fabricating the same which can improve a lifetime and luminous efficiency of an organic luminescence display device.
    Type: Application
    Filed: August 3, 2009
    Publication date: March 4, 2010
    Inventors: Kwang-Hyun Kim, Sung-Hoon Choi, Kyu-Il Han
  • Publication number: 20090146554
    Abstract: An organic light emitting diode has improved light emitting efficiency and life span. The organic light emitting diode includes an electron transfer layer formed by mixing Liq and organic substance of predetermined chemical formula at a predetermined ratio. In accordance therewith, a driving voltage of the organic light emitting diode is lowered. As a result, the light emitting efficiency and the life span of the organic light emitting diode can be improved.
    Type: Application
    Filed: November 12, 2008
    Publication date: June 11, 2009
    Inventors: Kwang Yeon Lee, Sung Hoon Choi, Hee Seok Yang, Kyu Il Han
  • Publication number: 20070267679
    Abstract: A memory device includes a gate stack on a substrate. The gate stack is disposed between a source and a drain. The gate stack includes a tunneling film, storage node, and control oxide film. A thickness of the control oxide film is greater than or equal to about 5 nm and less than or equal to about 30 nm. A method of manufacturing a memory device, including a gate stack on a substrate, wherein the gate stack is disposed between a source and a drain, includes: sequentially forming a tunneling film, a first silicon-rich oxide film, and a control oxide film on the substrate, wherein the first silicon-rich oxide film comprises a SiOx film (1.5<x<1.7); converting the first silicon-rich oxide film into a silicon oxide (SiO2) film comprising silicon nano-crystals; and patterning the control oxide film, the silicon oxide film, and the tunneling film to form the gate stack.
    Type: Application
    Filed: March 15, 2007
    Publication date: November 22, 2007
    Inventors: Young-kwan Cha, Suk-ho Choi, Kyu-il Han, Young-soo Park, Sang-jin Park, Yong-min Park