Patents by Inventor Dong-Hyeok LIM

Dong-Hyeok LIM 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: 12232417
    Abstract: Provided are an organic light emitting device with improved UV lifespan, based on changed configuration of an electron transport layer, and an organic light emitting display including the same.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: February 18, 2025
    Assignee: LG Display Co., Ltd.
    Inventors: Dong-Hyeok Lim, Jin-Ho Park
  • Patent number: 12161046
    Abstract: The present disclosure relates to an organic light emitting diode that includes at least one emitting material layer including an anthracene-based host and a boron-based dopant, at least one electron blocking layer including an amine-based compound substituted with at least one fused aromatic or hetero aromatic ring, and optionally at least one hole blocking layer including an azine-based compound or a benzimidazole-based compound. The organic light emitting diode has enhanced luminous efficiency as well as excellent luminous lifetime.
    Type: Grant
    Filed: December 21, 2019
    Date of Patent: December 3, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Seung Hee Yoon, In Bum Song, Jin Ho Park, Dong Hyeok Lim
  • Publication number: 20240341172
    Abstract: The present disclosure relates to an OLED that includes a first electrode; a second electrode facing the first electrode; and a first emitting material layer including a first host, a second host and a first blue dopant and positioned between the first and second electrodes, wherein the first host is an anthracene derivative, and the second host is a deuterated anthracene derivative.
    Type: Application
    Filed: June 14, 2024
    Publication date: October 10, 2024
    Applicant: LG DISPLAY CO., LTD.
    Inventors: In-Bum SONG, Seung-Hee YOON, Shin-Han KIM, So-Young JANG, Jin-Ho PARK, Dong-Hyeok LIM, Yoon-Deok HAN
  • Patent number: 12082494
    Abstract: The present disclosure relates to an OLED that includes a first electrode; a second electrode facing the first electrode; and a first emitting material layer including a first host, a second host and a first blue dopant and positioned between the first and second electrodes, wherein the first host is an anthracene derivative, and the second host is a deuterated anthracene derivative.
    Type: Grant
    Filed: December 21, 2019
    Date of Patent: September 3, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: In-Bum Song, Seung-Hee Yoon, Shin-Han Kim, So-Young Jang, Jin-Ho Park, Dong-Hyeok Lim, Yoon-Deok Han
  • Patent number: 11950500
    Abstract: The present disclosure relates to an organic light emitting diode that includes at least one emitting material layer including an anthracene-based host and a boron-based dopant, at least one electron blocking layer including an amine-based compound substituted with at least one polycyclic aryl group, and optionally at least one hole blocking layer including an azine-based compound or a benzimidazole-based compound. The organic light emitting diode has enhanced luminous efficiency as well as excellent luminous lifetime.
    Type: Grant
    Filed: December 21, 2019
    Date of Patent: April 2, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Seung Hee Yoon, In Bum Song, Jin Ho Park, Dong Hyeok Lim
  • 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: 11882745
    Abstract: A method for manufacturing a light emitting display device, includes preparing a substrate having an active area and edge areas around the active area, forming a first electrode in each of a plurality of subpixels in the active area, forming a first common layer configured to cover an entirety of the active area and to have a first process margin in the edge areas outside the active area, forming a conductivity improvement layer on the first common layer in the edge areas, forming a light emitting layer in each of the subpixels, forming a second common layer having a large size than a size of the active area, on the light emitting layer, and forming a second electrode having a second process margin in the edge areas to cover at least the first common layer, on the second common layer.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: January 23, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Dong-Hyeok Lim, Min-Chul Jun
  • Patent number: 11877463
    Abstract: Discussed is a light emitting display device which enables a common layer having high hole conductivity among common layers in respective stacks to include a material having a high orientation factor value so as to prevent generation of leakage current between subpixels and ensure high efficiency and a long lifespan.
    Type: Grant
    Filed: June 2, 2021
    Date of Patent: January 16, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Dong Hyeok Lim, Bo Seong Kim, Hwa Yong Shin, Ji Hyung Lee
  • 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: 20220209160
    Abstract: Discussed is a light emitting display device which enables a common layer having high hole conductivity among common layers in respective stacks to include a material having a high orientation factor value so as to prevent generation of leakage current between subpixels and ensure high efficiency and a long lifespan.
    Type: Application
    Filed: June 2, 2021
    Publication date: June 30, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Dong Hyeok LIM, Bo Seong KIM, Hwa Yong SHIN, Ji Hyung LEE
  • Publication number: 20220085117
    Abstract: A method for manufacturing a light emitting display device, includes preparing a substrate having an active area and edge areas around the active area, forming a first electrode in each of a plurality of subpixels in the active area, forming a first common layer configured to cover an entirety of the active area and to have a first process margin in the edge areas outside the active area, forming a conductivity improvement layer on the first common layer in the edge areas, forming a light emitting layer in each of the subpixels, forming a second common layer having a large size than a size of the active area, on the light emitting layer, and forming a second electrode having a second process margin in the edge areas to cover at least the first common layer, on the second common layer.
    Type: Application
    Filed: November 29, 2021
    Publication date: March 17, 2022
    Applicant: LG Display Co., Ltd.
    Inventors: Dong-Hyeok LIM, Min-Chul JUN
  • Patent number: 11222926
    Abstract: Disclosed are a light emitting display device and a method for manufacturing the same. The light emitting display device changes a configuration of common layers disposed in edge areas and can thus satisfy structural characteristics of a narrow bezel and prevent light leakage generated around the edge areas.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: January 11, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Dong-Hyeok Lim, Min-Chul Jun
  • Publication number: 20210408386
    Abstract: The present disclosure relates to an OLED that includes a first electrode; a second electrode facing the first electrode; and a first emitting material layer including a first host, a second host and a first blue dopant and positioned between the first and second electrodes, wherein the first host is an anthracene derivative, and the second host is a deuterated anthracene derivative.
    Type: Application
    Filed: December 21, 2019
    Publication date: December 30, 2021
    Applicant: LG DISPLAY CO., LTD.
    Inventors: In-Bum SONG, Seung-Hee YOON, Shin-Han KIM, So-Young JANG, Jin-Ho PARK, Dong-Hyeok LIM, Yoon-Deok HAN
  • Publication number: 20210320265
    Abstract: The present disclosure relates to an OLED that includes a first electrode; a second electrode facing the first electrode; a first emitting material layer including a first host, a second host and a blue dopant and positioned between the first and second electrodes; a first electron blocking layer including an electron blocking material of an amine derivative and positioned between the first electrode and the first emitting material layer; and a first hole blocking layer including at least one of a first hole blocking material and a second hole blocking material and positioned between the second electrode and the first emitting material layer, wherein the first host is an anthracene derivative, and the second host is a deuterated anthracene derivative, and wherein the first hole blocking material is an azine derivative, and the second hole blocking material is a benzimidazole derivative.
    Type: Application
    Filed: December 21, 2019
    Publication date: October 14, 2021
    Applicant: LG DISPLAY CO., LTD.
    Inventors: In Bum SONG, Seung Hee YOON, Jin Ho PARK, Dong Hyeok LIM
  • Publication number: 20210305513
    Abstract: The present disclosure relates to an organic light emitting diode that includes at least one emitting material layer including an anthracene-based host and a boron-based dopant, at least one electron blocking layer including an amine-based compound substituted with at least one fused aromatic or hetero aromatic ring, and optionally at least one hole blocking layer including an azine-based compound or a benzim-idazole-based compound. The organic light emitting diode has enhanced luminous efficiency as well as excellent luminous lifetime.
    Type: Application
    Filed: December 21, 2019
    Publication date: September 30, 2021
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Seung Hee YOON, In Bum SONG, Jin Ho PARK, Dong Hyeok LIM
  • Publication number: 20210296589
    Abstract: The present disclosure relates to an OLED that includes a first electrode; a second electrode facing the first electrode; a first emitting material layer including a first host, a second host and a blue dopant and positioned between the first and second electrodes; a first electron blocking layer including an electron blocking material of a heteroaryl-substituted amine derivative and positioned between the first electrode and the first emitting material layer; and a first hole blocking layer including at least one of a first hole blocking material and a second hole blocking material and positioned between the second electrode and the first emitting material layer, wherein the first host is an anthracene derivative, and the second host is a deuterated anthracene derivative, and wherein the first hole blocking material is a azine derivative, and the second hold blocking material is a benzimidazole derivative.
    Type: Application
    Filed: December 21, 2019
    Publication date: September 23, 2021
    Applicant: LG DISPLAY CO., LTD.
    Inventors: In-Bum SONG, Seung-Hee YOON, Jin-Ho PARK, Dong-Hyeok LIM
  • Publication number: 20210280792
    Abstract: The present disclosure relates to an organic light emitting diode that includes at least one emitting material layer including an anthracene-based host and a boron-based dopant, at least one electron blocking layer including an amine-based compound substituted with at least one polycyclic aryl group, and optionally at least one hole blocking layer including an azine-based compound or a benzimidazole-based compound. The organic light emitting diode has enhanced luminous efficiency as well as excellent luminous lifetime.
    Type: Application
    Filed: December 21, 2019
    Publication date: September 9, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: Seung Hee YOON, In Bum SONG, Jin Ho PARK, Dong Hyeok LIM
  • 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: 20200212123
    Abstract: Disclosed are a light emitting display device and a method for manufacturing the same. The light emitting display device changes a configuration of common layers disposed in edge areas and can thus satisfy structural characteristics of a narrow bezel and prevent light leakage generated around the edge areas.
    Type: Application
    Filed: December 23, 2019
    Publication date: July 2, 2020
    Applicant: LG Display Co., Ltd.
    Inventors: Dong-Hyeok LIM, Min-Chul JUN
  • 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