Patents by Inventor Hwan-Hee Cho

Hwan-Hee Cho 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: 20150053945
    Abstract: An anthracene-based compound is provided as represented by Formula 1: with substituents as described herein.
    Type: Application
    Filed: June 25, 2014
    Publication date: February 26, 2015
    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
  • Publication number: 20150048332
    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: Application
    Filed: July 9, 2014
    Publication date: February 19, 2015
    Inventors: Dong-Hyun KIM, Mi-Kyung KIM, Se-Hun KIM, Hwan-Hee CHO, Sam-Il KHO, Hyoung-Kun KIM, Chang-Woong CHU
  • Publication number: 20150034917
    Abstract: A heterocyclic compound of Formula 1 below and an organic light-emitting device including the same are provided. X1 to X4, L1, L2, n, m, and Ar1 to, Ar4 in Formula 1 are defined as in the specification.
    Type: Application
    Filed: March 24, 2014
    Publication date: February 5, 2015
    Applicants: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, SAMSUNG DISPLAY CO., LTD.
    Inventors: Se-Hun Kim, Mi-Kyung Kim, Jong-In Hong, Dong-Hyun Kim, Seong-Jin Jeong, Hwan-Hee Cho, Chang-Woong Chu
  • Publication number: 20150001511
    Abstract: An organic light-emitting device includes a first electrode, a second electrode disposed opposite to the first electrode, and an organic layer disposed between the first electrode and the second electrode and including an emission layer. The emission layer includes at least one first light-emitting material represented by Formula 1 and at least one second light-emitting material represented by Formula 2: X1 to X12, Ar1, M, X21 to X24, A, B, R1 to R12, R21, R22, a1, a2, n, L, M in Formulae 1 and 2 are defined as in the specification.
    Type: Application
    Filed: June 30, 2014
    Publication date: January 1, 2015
    Inventors: Mi-Kyung KIM, Chang-Woong CHU, Kwan-Hee LEE, Se-Hun KIM, Hwan-Hee CHO, Dae-Yup SHIN, Jung-Hwan PARK, Bum-Sung LEE
  • Publication number: 20140374711
    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: Application
    Filed: April 14, 2014
    Publication date: December 25, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hwan-Hee CHO, Mi-Kyung KIM, Se-Hun KIM, Dong-Hyun KIM, Chang-Woong CHU
  • Publication number: 20140367649
    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 includes an emission layer, and the emission layer includes at least one light-emitting material represented by one of Formulas 1 and 2. The organic layer further includes at least one hole-transporting material represented by one of Formulas 2(1) and 2(2).
    Type: Application
    Filed: October 23, 2013
    Publication date: December 18, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hwan-Hee Cho, Mi-Kyung Kim, Se-Hun Kim, Dong-Hyun Kim, Chang-Woong Chu
  • Patent number: 8912548
    Abstract: An organic light-emitting diode includes a first electrode, a second electrode, and an organic layer disposed between the first electrode and the second electrode. The organic layer includes an emission layer. The organic layer also includes at least one amine-based compound and at least one anthracene-based compound. The organic layer may include a first emission layer and a second emission layer, and the amine-based compound may be in the first emission layer and the anthracene-based compound may be in the second emission layer.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: December 16, 2014
    Assignees: Samsung Display Co., Ltd., Seoul National University R&DB Foundation
    Inventors: Hwan-Hee Cho, Mi-Kyung Kim, Se-Hun Kim, Chang-Woong Chu, Myoung-Ki Kim, Jong-In Hong
  • Publication number: 20140346456
    Abstract: An organic light-emitting diode includes a substrate, a first electrode, a second electrode facing the first electrode, and an emission layer between the first electrode and the second electrode.
    Type: Application
    Filed: October 3, 2013
    Publication date: November 27, 2014
    Applicants: Gyeongsang National University Industry-Academic Cooperation Foundation, SAMSUNG DISPLAY CO., LTD.
    Inventors: Se-Hun Kim, Hwan-Hee Cho, Mi-Kyung Kim, Chang-Woong Chu, Yun-Hi Kim
  • Publication number: 20140346463
    Abstract: An organic light-emitting diode including a substrate; a first electrode on the substrate; a second electrode disposed opposite to the first electrode; and an emission layer between the first electrode and the second electrode, the emission layer including an anthracene-based compound represented by Formula 1, below, and a condensed cyclic compound represented by Formula 20, below:
    Type: Application
    Filed: November 12, 2013
    Publication date: November 27, 2014
    Inventors: Se-Hun KIM, Dong-Hyun KIM, Hwan-Hee CHO, Mi-Kyung KIM, Chang-Woong CHU, Yun-Hi KIM, Soon-Ki KWON
  • Publication number: 20140346462
    Abstract: An organic light-emitting diode, comprising a substrate; a first electrode on the substrate; a second electrode disposed opposite to the first electrode; and an emission layer between the first electrode and the second electrode, the emission layer including an anthracene-based compound represented by Formula 1, below, and a condensed cyclic compound represented by Formula 20, below:
    Type: Application
    Filed: November 7, 2013
    Publication date: November 27, 2014
    Inventors: Se-Hun KIM, Dong-Hyun KIM, Hwan-Hee CHO, Mi-Kyung KIM, Chang-Woong CHU, Yun-Ji LEE, Yun-Hi KIM, Soon-Ki KWON
  • Publication number: 20140346464
    Abstract: An organic light-emitting diode including a substrate; a first electrode on the substrate; a second electrode facing the first electrode; and an emission layer between the first electrode and the second electrode, the emission layer including an anthracene-based compound represented by Formula 1, below, and a condensed ring compound represented by Formula 20, below:
    Type: Application
    Filed: November 12, 2013
    Publication date: November 27, 2014
    Inventors: Se-Hun KIM, Dong-Hyun KIM, Hwan-Hee CHO, Mi-Kyung KIM, Chang-Woong CHU, Yun-Ji LEE, Yun-Hi KIM, Soon-Ki KWON
  • Publication number: 20140319472
    Abstract: An organic light-emitting diode including a first electrode, a second electrode, and an organic layer between the first electrode and the second electrode. The organic layer includes an emission layer with at least one light-emitting material, and a region between the first electrode and the emission layer with at least one hole transport material.
    Type: Application
    Filed: September 4, 2013
    Publication date: October 30, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hwan-Hee Cho, Mi-Kyung Kim, Dae-Yup Shin, Se-Hun Kim, Hwan-Hee Lee
  • Publication number: 20140252327
    Abstract: Provided are an amine-based compound and an organic light-emitting diode including the same.
    Type: Application
    Filed: February 27, 2014
    Publication date: September 11, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Hwan-Hee Cho, Mi-Kyung Kim, Se-Hun Kim, Sam-Il Kho, Hyoung-Kun Kim
  • Publication number: 20140197383
    Abstract: An organic light-emitting diode includes a first electrode, a second electrode, and an organic layer disposed between the first electrode and the second electrode. The organic layer includes an emission layer. The organic layer also includes at least one amine-based compound and at least one anthracene-based compound. The organic layer may include a first emission layer and a second emission layer, and the amine-based compound may be in the first emission layer and the anthracene-based compound may be in the second emission layer.
    Type: Application
    Filed: July 15, 2013
    Publication date: July 17, 2014
    Inventors: Hwan-Hee Cho, Mi-Kyung Kim, Se-Hun Kim, Chang-Woong Chu, Myoung-Ki Kim, Jong-In Hong
  • Publication number: 20140197381
    Abstract: An organic light-emitting diode includes a first electrode, a second electrode, and an organic layer disposed between the first electrode and the second electrode. The organic layer includes an emission layer. The organic layer also includes at least one amine-based compound and at least one pyrene-based compound. The organic layer may include a first emission layer and a second emission layer, and the amine-based compound may be in the first emission layer and the pyrene-based compound may be in the second emission layer.
    Type: Application
    Filed: July 11, 2013
    Publication date: July 17, 2014
    Inventors: Se-Hun Kim, Hwan-Hee Cho, Myoung-Ki Kim, Mi-Kyung Kim, Chang-Woong Chu, Jong-In Hong
  • Publication number: 20140191206
    Abstract: An organic light-emitting device includes: a first electrode, a second electrode facing the first electrode, a phosphorescent emission layer between the first electrode and the second electrode, an electron transportation layer between the phosphorescent emission layer and the second electrode, an electron control layer between the phosphorescent emission layer and the electron transportation layer, and an electron blocking layer between the phosphorescent emission layer and the first electrode. An organic light-emitting display apparatus includes the organic light-emitting device.
    Type: Application
    Filed: July 11, 2013
    Publication date: July 10, 2014
    Inventor: Hwan-Hee Cho
  • Publication number: 20140117325
    Abstract: An organic light emitting device is described. The organic light emitting device includes: a substrate; a first electrode on the substrate; an emission layer on the first electrode; a second electrode on the emission layer; and an exciton blocking layer between the first electrode and the emission layer, in which a LUMO energy level of the exciton blocking layer is higher than a LUMO energy level of the emission layer.
    Type: Application
    Filed: June 26, 2013
    Publication date: May 1, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae-Hyun Kwak, Ji-Hyun Seo, Hwan-Hee Cho, Young-Ho Park, Moon-Jae Lee, Chang-Woong Chu, Kwan-Hee Lee
  • Patent number: 8692237
    Abstract: An organic light emitting device enables improvement on the loss of optical extraction efficiency due to total reflection and optical waveguide effects. The organic light emitting device has a structure wherein a first electrode, an organic substance layer, and a second electrode are sequentially laminated on a substrate, a random nano structure having a fine pattern of a peaks-and-valleys shape is formed between a substrate and a first electrode to extract any light that is wasted due to total reflection and an optical waveguide mode to the outside of the substrate so that an organic light emitting device with improved external quantum efficiency can be realized, and optical extraction patterns and color changes due to visual field angles can also be improved.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: April 8, 2014
    Assignee: SNU R&DB Foundation
    Inventors: Jang-Joo Kim, Hyong-Jun Kim, Hwan-Hee Cho
  • Publication number: 20130256634
    Abstract: An organic light-emitting device includes a first electrode, a second electrode facing the first electrode, a phosphorescent emission layer between the first electrode and the second electrode, and an electron transport layer between the phosphorescent emission layer and the second electrode. The phosphorescent emission layer includes a compound represented by one of Formulae 1a to 1c, and the electron transport layer includes a metal-containing compound and a compound represented by Formula 2.
    Type: Application
    Filed: August 22, 2012
    Publication date: October 3, 2013
    Inventors: Hwan-Hee Cho, Moon-Jae Lee, Ji-Hyun Seo, Jae-Hyun Kwak, Young-Ho Park, Chang-Woong Chu, Mi-Kyung Kim, Kwan-Hee Lee
  • Publication number: 20130207082
    Abstract: An organic light-emitting device including a first electrode, a second electrode opposite to the first electrode, a phosphorescent layer disposed between the first electrode and the second electrode, an electron transport layer disposed between the phosphorescent emission layer and the second electrode, and an electron control layer disposed between the phosphorescent emission layer and the electron transport layer. An organic light-emitting display apparatus including the OLED.
    Type: Application
    Filed: August 30, 2012
    Publication date: August 15, 2013
    Applicant: Samsung Display Co., Ltd.
    Inventors: Hwan-Hee CHO, Kwan-Hee LEE, Chang-Woong CHU, Moon-Jae LEE, Jae-Hyun KWAK, Young-Ho PARK, Ji-Hyun SEO