Patents by Inventor Chang-woong Chu

Chang-woong Chu 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).

  • Publication number: 20200058878
    Abstract: According to one or more embodiments, an organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer may include a first compound represented by one selected from Formulae 1-1 and 1-2, and a second compound represented by Formula 2:
    Type: Application
    Filed: October 18, 2019
    Publication date: February 20, 2020
    Inventors: Hwan-Hee Cho, Myeong-Suk Kim, Hee-Yeon Kim, Chang-Woong Chu
  • Patent number: 10535842
    Abstract: The described technology relates to an organic light emitting diode including: a first electrode; a second electrode overlapping the first electrode; an organic emission layer between the first electrode and the second electrode; and a capping layer on the second electrode, wherein the capping layer has an absorption rate of 0.25 or more for light having a wavelength of 405 nm, thereby preventing degradation of the organic emission layer by blocking the light of the harmful wavelength region and providing the organic light emitting diode in which a blue emission efficiency is not deteriorated.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: January 14, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Myeong Suk Kim, Sung Wook Kim, Chang Woong Chu, Jin Soo Hwang, Sang Hoon Yim
  • Patent number: 10529929
    Abstract: According to one or more embodiments, an organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer may include a first compound represented by one selected from Formulae 1-1 and 1-2, and a second compound represented by Formula 2:
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: January 7, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hwan-Hee Cho, Myeong-Suk Kim, Hee-Yeon Kim, Chang-Woong Chu
  • Patent number: 10367163
    Abstract: An organic light emitting diode, including a first electrode and a second electrode facing each other; an emission layer between the first electrode and the second electrode; and a hole injection layer between the first electrode and the emission layer, the hole injection layer including a dipole material including a first component and a second component that have different polarities.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: July 30, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong Chan Kim, Won Jong Kim, Eung Do Kim, Dong Kyu Seo, Da Hea Im, Sang Hoon Yim, Chang Woong Chu
  • Patent number: 10333077
    Abstract: An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer including an emission layer between the first electrode and the second electrode. The emission layer includes at least one compound selected from carbazole-based compounds, and at least one compound selected from heterocyclic compounds as described in the detailed description.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: June 25, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hwan-Hee Cho, Mi-Kyung Kim, Jae-Yong Lee, Dong-Hyun Kim, Se-Hun Kim, Chang-Woong Chu
  • Publication number: 20190189946
    Abstract: An organic light emitting diode, including a first electrode; a second electrode facing the first electrode, the second electrode including magnesium; an emission layer between the first electrode and the second electrode; and an electron injection layer between the second electrode and the emission layer, the electron injection layer including a dipole material including a first component and a second component having different polarities, the dipole material including halide, and a content of the magnesium included in the second electrode being in a range of from 10 to 40 volume %.
    Type: Application
    Filed: February 21, 2019
    Publication date: June 20, 2019
    Inventors: Dong Chan KIM, Won Jong KIM, Eung Do KIM, Dong Kyu SEO, Da Hea IM, Sang Hoon YIM, Chang Woong CHU
  • Patent number: 10326080
    Abstract: An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer including an emission layer between the first electrode and the second electrode. The emission layer includes at least one compound selected from carbazole-based compounds, and at least one compound selected from heterocyclic compounds as described in the detailed description.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: June 18, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hwan-Hee Cho, Mi-Kyung Kim, Jae-Yong Lee, Dong-Hyun Kim, Se-Hun Kim, Chang-Woong Chu
  • Patent number: 10290811
    Abstract: An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer that is disposed between the first electrode and the second electrode and includes an emission layer, wherein the organic layer includes at least one pyrene-based compound represented by Formula 1 and at least one anthracene-based compound represented by Formula 2:
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: May 14, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Naoyuki Ito, Seul-Ong Kim, Youn-Sun Kim, Dong-Woo Shin, Chang-Woong Chu
  • Patent number: 10283734
    Abstract: An organic light emitting diode display, including a substrate; a thin film transistor on the substrate; a first electrode on the thin film transistor and electrically connected to the thin film transistor; an organic emission layer on the first electrode; a second electrode on the organic emission layer; and a first capping layer on the second electrode and a second capping layer on the first capping layer, the second capping layer being thicker than the first capping layer.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: May 7, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang Hoon Yim, Dong Chan Kim, Won Jong Kim, Eung Do Kim, Dong Kyu Seo, Jong Hyuk Lee, Da Hea Im, Yoon Hyeung Cho, Chang Woong Chu
  • Patent number: 10236464
    Abstract: An organic light emitting diode, including a first electrode; a second electrode facing the first electrode, the second electrode including magnesium; an emission layer between the first electrode and the second electrode; and an electron injection layer between the second electrode and the emission layer, the electron injection layer including a dipole material including a first component and a second component having different polarities, the dipole material including halide, and a content of the magnesium included in the second electrode being in a range of from 10 to 40 volume %.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: March 19, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong Chan Kim, Won Jong Kim, Eung Do Kim, Dong Kyu Seo, Da Hea Im, Sang Hoon Yim, Chang Woong Chu
  • Patent number: 10230053
    Abstract: An organic light-emitting device includes: a first electrode; a second electrode opposite the first electrode; an emission layer between the first electrode and the second electrode; a hole transport region between the first electrode and the emission layer; and an electron transport region between the emission layer and the second electrode, the electron transport region including an electron control layer, wherein the hole transport region includes at least one compound selected from a first compound represented by Formula 1 and a second compound represented by Formula 2, and the electron control layer includes a third compound represented by Formula 3:
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: March 12, 2019
    Assignees: Samsung Display Co., Ltd., Doosan Corporation
    Inventors: Myeong-Suk Kim, Sung-Wook Kim, Hwan-Hee Cho, Sang-Woo Lee, Chang-Woong Chu, Tae-Hyung Kim, Ho-Cheol Park, Chang-Jun Lee, Young-Bae Kim, Hoe-Moon Kim
  • Publication number: 20190019958
    Abstract: A composition for forming organic film, a display device utilizing the composition, and a method of manufacturing the display device are provided. The composition for forming an organic film includes a solvent; and a compound of Formula 1: Ar?R)k.
    Type: Application
    Filed: January 5, 2018
    Publication date: January 17, 2019
    Inventors: Se Hun KIM, Chang Woong CHU, Duk Ki KIM, Dong Woo SHIN, Jae Kook HA
  • Publication number: 20190019992
    Abstract: The described technology relates to an organic light emitting diode including: a first electrode; a second electrode overlapping the first electrode; an organic emission layer between the first electrode and the second electrode; and a capping layer on the second electrode, wherein the capping layer has an absorption rate of 0.25 or more for light having a wavelength of 405 nm, thereby preventing degradation of the organic emission layer by blocking the light of the harmful wavelength region and providing the organic light emitting diode in which a blue emission efficiency is not deteriorated.
    Type: Application
    Filed: September 19, 2018
    Publication date: January 17, 2019
    Inventors: Myeong Suk KIM, Sung Wook KIM, Chang Woong CHU, Jin Soo HWANG, Sang Hoon YIM
  • Patent number: 10170723
    Abstract: An organic light emitting element according to an exemplary embodiment of the present disclosure includes a first electrode, a second electrode, an emission layer between the first electrode and the second electrode, an electron injection layer between the second electrode and the emission layer, and a barrier layer between the electron injection layer and the second electrode, wherein a work function of the barrier layer is larger than a work function of the second electrode.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: January 1, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong Kyu Seo, Dong Chan Kim, Won Jong Kim, Eung Do Kim, Jong Hyuk Lee, Da Hea Im, Sang Hoon Yim, Yoon Hyeung Cho, Chang Woong Chu, Won Suk Han
  • Patent number: 10158086
    Abstract: Provided is an organic light-emitting device including a first electrode; a second electrode disposed opposite to the first electrode; an emission layer disposed between the first electrode and the second electrode, the emission layer including at least one specific light-emitting material; and a hole-transporting region disposed between the first electrode and the emission layer, the hole-transporting region including at least one specific hole-transporting material.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: December 18, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hwan-Hee Cho, Mi-Kyung Kim, Se-Hun Kim, Dong-Hyun Kim, Chang-Woong Chu
  • Patent number: 10084157
    Abstract: The described technology relates to an organic light emitting diode including: a first electrode; a second electrode overlapping the first electrode; an organic emission layer between the first electrode and the second electrode; and a capping layer on the second electrode, wherein the capping layer has an absorption rate of 0.25 or more for light having a wavelength of 405 nm, thereby preventing degradation of the organic emission layer by blocking the light of the harmful wavelength region and providing the organic light emitting diode in which a blue emission efficiency is not deteriorated.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: September 25, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Myeong Suk Kim, Sung Wook Kim, Chang Woong Chu, Jin Soo Hwang, Sang Hoon Yim
  • Publication number: 20180240981
    Abstract: An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer including an emission layer between the first electrode and the second electrode. The emission layer includes at least one compound selected from carbazole-based compounds, and at least one compound selected from heterocyclic compounds as described in the detailed description.
    Type: Application
    Filed: April 23, 2018
    Publication date: August 23, 2018
    Inventors: Hwan-Hee Cho, Mi-Kyung Kim, Jae-Yong Lee, Dong-Hyun Kim, Se-Hun Kim, Chang-Woong Chu
  • Patent number: 10038144
    Abstract: An organic light-emitting device including a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode; a hole transport region between the first electrode and the emission layer; and an electron transport region between the emission layer and the second electrode, wherein the hole transport region includes a first compound represented by Formula 1-1 or Formula 1-2, and wherein the electron transport region includes a second compound represented by Formula 2:
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: July 31, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Myeong-Suk Kim, Tae-Kyung Kim, Sung-Wook Kim, Hwan-Hee Cho, Chang-Woong Chu
  • Patent number: 10026909
    Abstract: An anthracene-based compound is provided as represented by Formula 1: with substituents as described herein.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: July 17, 2018
    Assignees: SAMSUNG DISPLAY CO., LTD., Industry-Academic Cooperation Foundation Gyeongsang National University
    Inventors: Mi-Kyung Kim, Chang-Woong Chu, Se-Hun Kim, Hwan-Hee Cho, Dong-Hyun Kim, Yun-Hi Kim, Soon-Ki Kwon, Yun-Ji Lee
  • Patent number: 10003040
    Abstract: An organic light emitting element, includes a first electrode and a second electrode facing each other; an emission layer between the first electrode and the second electrode; and an electron injection layer between the second electrode and the emission layer, the electron injection layer including an oxide having a relative dielectric constant of 10 or more and a metal having a work function of 4.0 eV or less.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: June 19, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong Chan Kim, Won Jong Kim, Eung Do Kim, Dong Kyu Seo, Jong Hyuk Lee, Sang Hoon Yim, Chang Woong Chu