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).

  • Patent number: 10003041
    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 an electron injection layer between the second electrode and the emission layer, the electron injection layer including a metal having a work function of 4.0 eV or less and a dipole material including a first component and a second component having different polarities.
    Type: Grant
    Filed: June 10, 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, Da Hea Im, Sang Hoon Yim, Chang Woong Chu
  • Patent number: 9972789
    Abstract: An organic light-emitting device includes a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, where the emission layer includes a first host represented by Formula 1 and a second host represented by Formula 2: The organic light-emitting device may have high efficiency and long lifespan.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: May 15, 2018
    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: 9966545
    Abstract: Embodiments are directed to an anthracene-based compound and an organic light-emitting device. The anthracene-based compound is represented by Formula 1: Substituents of Formula 1 are described in the specification. The organic light-emitting device may include a first electrode, a second electrode opposite to the first electrode, and an organic layer between the first and second electrodes and including an emission layer. The organic layer may include at least one anthracene-based compound of Formula 1.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: May 8, 2018
    Assignees: SAMSUNG DISPLAY CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION GYEONGSANG NATIONAL UNIVERSITY
    Inventors: Mi-Kyung Kim, Chang-Woong Chu, Se-Hun Kim, Dong-Hyun Kim, Yun-Hi Kim, Soon-Ki Kwon, Yun-ji Lee
  • Patent number: 9960380
    Abstract: An organic light emitting diode and an organic light emitting display device, the 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 transport layer between the first electrode and the emission layer, wherein the hole transport layer includes an organic material and a dipole material, the dipole material including a first component and a second component, the first component having a polarity different from that of the second component and the first component and the second component being combined with each other.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: May 1, 2018
    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: 9917262
    Abstract: An organic light-emitting device including a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer; wherein the emission layer includes a first host represented by the following Formula 1, and a second host represented by the following Formula 2:
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: March 13, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hwan-Hee Cho, Myeong-Suk Kim, Sung-Wook Kim, Jae-Yong Lee, Chang-Woong Chu
  • Patent number: 9896621
    Abstract: An organic light-emitting device includes 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 second electrode and the emission layer.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: February 20, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Myeong-Suk Kim, Tae-Kyung Kim, Sung-Wook Kim, Hwan-Hee Cho, Chang-Woong Chu
  • Patent number: 9871205
    Abstract: Provided is an organic light-emitting device with a blue emission layer. The blue emission layer is an emission layer that emits blue light by a fluorescent emission mechanism.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: January 16, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Mi-Kyung Kim, Kwan-Hee Lee, Sam-Il Kho, Chang-Woong Chu
  • Patent number: 9853222
    Abstract: A condensed-cyclic compound is represented by Formula 1, and an organic light-emitting diode includes the condensed-cyclic compound. The organic light-emitting diode includes a first electrode, a second electrode facing the first electrode, and an organic layer. The organic layer includes an emission layer and the condensed-cyclic compound. The condensed-cyclic compound can be included in the emission layer as a host, and the emission layer may further include a dopant.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: December 26, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se-Hun Kim, Mi-Kyung Kim, Kwan-Hee Lee, Chang-Woong Chu
  • Patent number: 9831438
    Abstract: A compound, an organic light-emitting device, and a flat display apparatus, the compound being represented by Formula 1, below:
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: November 28, 2017
    Assignees: SAMSUNG DISPLAY CO., LTD., SEOUL NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY R & DB FOUNDATION
    Inventors: Se-Hun Kim, Seong-Jin Jeong, Jong-In Hong, Mi-Kyung Kim, Chang-Woong Chu
  • Publication number: 20170294627
    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: March 10, 2017
    Publication date: October 12, 2017
    Inventors: Myeong Suk KIM, Sung Wook KIM, Chang Woong CHU, Jin Soo HWANG, Sang Hoon YIM
  • Publication number: 20170294628
    Abstract: A light emitting diode according to an exemplary embodiment of the present invention includes: a first electrode; a second electrode overlapping the first electrode; an emission layer disposed between the first electrode and the second electrode; and a capping layer disposed on the second electrode, wherein the capping layer satisfies Equation 1 below. n*k(?=405 nm)?0.8.??Equation 1 In Equation 1, n*k (?=405 nm) represents an optical value that is a product of a refractive index and an absorption coefficient in a 405 nanometer wavelength.
    Type: Application
    Filed: April 6, 2017
    Publication date: October 12, 2017
    Inventors: Dong Hoon Kim, Sang Hoon Yim, Kwan Hee Lee, Myeong Suk Kim, Sung Wook Kim, Chang Woong Chu, Jin Soo Hwang
  • Publication number: 20170294613
    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, the emission layer including a first compound and a second compound; a hole transport region between the first electrode and the emission layer; and an electron transport region, the electron transport region including a buffer layer between the emission layer and the second electrode, the buffer layer including a third compound, and an electron transport layer between the buffer layer and the second electrode, the electron transport layer including a fourth compound, wherein, in the emission layer, the first compound is a phosphorescent host and the second compound is a phosphorescent dopant, wherein the first compound and the third compound are different from each other, wherein the first compound and the third compound each independently include both an electron transport group and a hole transport group.
    Type: Application
    Filed: March 15, 2017
    Publication date: October 12, 2017
    Inventors: Hwan-Hee CHO, Myeong-Suk KIM, Sung-Wook KIM, Chang-Woong CHU
  • Patent number: 9768388
    Abstract: An amine-based compound is represented by Formula 1 below: wherein Z11 to Z24, R1 to R4 and Ar1 are as indicated in the specification. An organic light-emitting diode includes the amine-based compound.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: September 19, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong-Hyun Kim, Mi-Kyung Kim, Se-Hun Kim, Hwan-Hee Cho, Sam-Il Kho, Hyoung-Kun Kim, Chang-Woong Chu
  • Publication number: 20170256734
    Abstract: An organic light emitting diode and an organic light emitting display device, the 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 transport layer between the first electrode and the emission layer, wherein the hole transport layer includes an organic material and a dipole material, the dipole material including a first component and a second component, the first component having a polarity different from that of the second component and the first component and the second component being combined with each other.
    Type: Application
    Filed: May 18, 2017
    Publication date: September 7, 2017
    Inventors: Dong Chan KIM, Won Jong KIM, Eung Do KIM, Dong Kyu SEO, Da Hea IM, Sang Hoon YIM, Chang Woong CHU
  • Patent number: 9741947
    Abstract: An organometallic complex represented by Formula 1 below and an organic light-emitting device including the same: Formula 1 is as defined in the specification.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: August 22, 2017
    Assignees: Samsung Display Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Youn-Sun Kim, Yun-Ho Lee, Seul-Ong Kim, Dong-Woo Shin, Jung-Sub Lee, Naoyuki Ito, Chang-Woong Chu, Yeong-Eun Kim
  • Patent number: 9704928
    Abstract: An organic light emitting diode display including a substrate, a thin film transistor on the substrate, a first electrode connected to the thin film transistor, a first layer on the first electrode, an emission layer on the first layer, a second layer on the emission layer, and a second electrode on the second layer.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: July 11, 2017
    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
  • Publication number: 20170194569
    Abstract: An organic light-emitting device is provided. The device includes an organic layer having an emission layer disposed between two electrodes.
    Type: Application
    Filed: December 23, 2016
    Publication date: July 6, 2017
    Inventors: Myeong-Suk KIM, Sung-Wook KIM, Hwan-Hee CHO, Jin-Soo HWANG, Won-Jun SONG, Chang-Woong CHU
  • Publication number: 20170186969
    Abstract: According to one or more embodiments, an organic light-emitting device includes: a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer.
    Type: Application
    Filed: December 23, 2016
    Publication date: June 29, 2017
    Inventors: Myeong-Suk Kim, Sung-Wook Kim, Hwan-Hee Cho, Jin-Soo Hwang, Chang-Woong Chu
  • Publication number: 20170186964
    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: September 12, 2016
    Publication date: June 29, 2017
    Inventors: Hwan-Hee Cho, Myeong-Suk Kim, Hee-Yeon Kim, Chang-Woong Chu
  • Publication number: 20170186978
    Abstract: An organic light-emitting device includes: a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer includes a first compound represented by one selected from Formulae 1-1 and 1-2 and a second compound represented by one selected from Formulae 2-1 to 2-3.
    Type: Application
    Filed: December 23, 2016
    Publication date: June 29, 2017
    Inventors: Myeong-Suk KIM, Sung-Wook KIM, Hwan-Hee CHO, Jin-Soo HWANG, Chang-Woong CHU