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).

  • ORGANIC LIGHT-EMITTING DEVICE
    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
  • ORGANIC LIGHT-EMITTING DEVICE
    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
  • ORGANIC LIGHT-EMITTING DEVICE
    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
  • ORGANIC LIGHT-EMITTING DEVICE
    Publication number: 20170179404
    Abstract: 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 includes a first compound represented by Formula 1 and a second compound represented by Formula 501. The organic light-emitting device including the first compound and the second compound may have low driving voltage, high efficiency, and high luminance.
    Type: Application
    Filed: December 13, 2016
    Publication date: June 22, 2017
    Inventors: Sung-Wook Kim, Myeong-Suk Kim, Hwan-Hee Cho, Jin-Soo Hwang
  • ORGANIC LIGHT-EMITTING DEVICE
    Publication number: 20170170405
    Abstract: An organic light-emitting device is provided. The device includes a first electrode, a second electrode, and an organic layer disposed between the first electrode and the second electrode and including an emission layer. The organic layer includes a first compound represented by Formula 1 and a second compound represented by Formula 2. Various possibilities for the constituents of chemical structures in Formulas 1 and 2 are presented.
    Type: Application
    Filed: December 9, 2016
    Publication date: June 15, 2017
    Inventors: Hwan-Hee CHO, Myeong-Suk KIM, Jae-Yong LEE, Hye-In JEONG
  • ORGANIC LIGHT-EMITTING DEVICE
    Publication number: 20170170404
    Abstract: An organic light-emitting device including a first compound represented by Formula 1 and a second compound represented by one of Formulae 2A and 2B.
    Type: Application
    Filed: December 9, 2016
    Publication date: June 15, 2017
    Inventors: Myeong-Suk KIM, Hee-Yeon KIM, Hwan-Hee CHO, Seung-Gak YANG
  • ORGANIC LIGHT-EMITTING DEVICE
    Publication number: 20170170403
    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 Formula 1, a second compound represented by Formula 2, and a third compound represented by one of Formulae 3-1 to 3-4. The organic light-emitting device may have high efficiency and a long lifespan.
    Type: Application
    Filed: December 7, 2016
    Publication date: June 15, 2017
    Inventors: Hwan-Hee Cho, Myeong-Suk Kim, Jae-Yong Lee, Hye-In Jeong
  • ORGANIC LIGHT-EMITTING DEVICE
    Publication number: 20170155054
    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 organic layer includes a first compound represented by Formula 1 and a second compound represented by Formula 2: When the first compound represented by Formula 1 is included in the emission layer and the second compound represented by Formula 2 is included in the first layer, an organic light-emitting device according to an embodiment of the present disclosure may have high efficiency and a long lifespan.
    Type: Application
    Filed: August 25, 2016
    Publication date: June 1, 2017
    Inventors: Myeong-Suk Kim, Hwan-Hee Cho, Hee-Yeon Kim, Chang-Woong Chu, Bum-Sung Lee, Jung-Hwan Park
  • Organic light-emitting device
    Patent number: 9660200
    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: and 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: Grant
    Filed: October 6, 2016
    Date of Patent: May 23, 2017
    Assignees: SAMSUNG DISPLAY CO., LTD., DUK SAN NEOLUX CO., LTD.
    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
  • ORGANIC LIGHT-EMITTING DEVICE
    Publication number: 20170133590
    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 Formula 1 and a second compound represented by one of Formulae 2 and 3:
    Type: Application
    Filed: August 5, 2016
    Publication date: May 11, 2017
    Inventors: Hwan-Hee Cho, Myeong-Suk Kim, Sung-Wook Kim, Se-Hun Kim
  • ORGANIC LIGHT-EMITTING DEVICE
    Publication number: 20170133599
    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; and a hole transport region between the first electrode and the emission layer, wherein the emission layer includes a first compound represented by Formula 1, and the hole transport region includes a second compound represented by Formula 2:
    Type: Application
    Filed: September 12, 2016
    Publication date: May 11, 2017
    Inventors: Hwan-Hee Cho, Myeong-Suk Kim, Hee-Yeon Kim
  • ORGANIC LIGHT-EMITTING DEVICE
    Publication number: 20170125697
    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 and 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: An organic light-emitting device including the first compound as host in the emission layer and the second compound in the hole transport region may have high efficiency and a long lifespan.
    Type: Application
    Filed: August 3, 2016
    Publication date: May 4, 2017
    Inventors: Hwan-Hee Cho, Myeong-Suk Kim, Hee-Yeon Kim
  • ORGANIC LIGHT-EMITTING DEVICE
    Publication number: 20170125690
    Abstract: An organic light-emitting device including a first electrode; a second electrode; and an organic layer including an emission layer between the first electrode and the second electrode; wherein the organic layer includes a first compound represented by Formula 1 and a second compound represented by one selected from Formulae 2-1 to 2-3:
    Type: Application
    Filed: August 15, 2016
    Publication date: May 4, 2017
    Inventors: Myeong-Suk Kim, Hwan-Hee Cho, Hee-Yeon Kim, Chang-Woong Chu
  • ORGANIC LIGHT-EMITTING DEVICE
    Publication number: 20170117486
    Abstract: An organic light-emitting device including: a first electrode; a second electrode; and an organic layer including an emission layer between the first electrode and the second electrode. The organic layer may include at least one compound selected from a first compound and a second compound, in addition to a third compound.
    Type: Application
    Filed: September 22, 2016
    Publication date: April 27, 2017
    Inventors: Hwan-Hee Cho, Myeong-Suk Kim, Hee-Yeon Kim
  • Heterocyclic compound and organic light-emitting device including the same
    Patent number: 9634257
    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: Grant
    Filed: March 24, 2014
    Date of Patent: April 25, 2017
    Assignees: Samsung Display Co., Ltd., Seoul National University R&DB Foundation
    Inventors: Se-Hun Kim, Mi-Kyung Kim, Jong-In Hong, Dong-Hyun Kim, Seong-Jin Jeong, Hwan-Hee Cho, Chang-Woong Chu
  • Organic light-emitting devices
    Patent number: 9601698
    Abstract: 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 and including an emission layer, wherein the emission layer includes at least one first host selected from compounds represented by Formula 1 and at least one second host selected from compounds represented by Formula 2:
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: March 21, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hwan-Hee Cho, Mi-Kyung Kim, Jae-Yong Lee, Dong-Hyun Kim, Se-Hun Kim, Chang-Woong Chu, Eun-Hwa Jang
  • CONDENSED CYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20170069847
    Abstract: A condensed cyclic compound and an organic light-emitting device including the same, the condensed cyclic compound being represented by the following Formula 1:
    Type: Application
    Filed: August 31, 2016
    Publication date: March 9, 2017
    Inventors: Sung-Wook KIM, Myeong-Suk KIM, Hwan-Hee CHO, Sam-Il KHO, Seung-Soo YOON
  • COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20170069856
    Abstract: A compound having a high glass transition temperature, high electric stability, and/or high luminescent efficiency, and an organic light-emitting device including an emitting layer including the compound, which is represented by Formula 1: In Formula 1, A may be a moiety formed by fusing a substituted or unsubstituted indole group, as represented by Formula 1-1: When the compound represented by Formula 1 is used as a material for an emitting layer, an organic light emitting device including the compound may exhibit decreased driving voltage and improved efficiency and lifespan, as compared to OLEDs containing compounds that are available in the related art.
    Type: Application
    Filed: July 21, 2016
    Publication date: March 9, 2017
    Inventors: Se-Hun Kim, Hwan-Hee Cho, Jin-Soo Hwang
  • Amine-based compound and organic light-emitting diode including the same
    Patent number: 9590185
    Abstract: Provided are an amine-based compound and an organic light-emitting diode including the same.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: March 7, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hwan-Hee Cho, Mi-Kyung Kim, Se-Hun Kim, Sam-Il Kho, Hyoung-Kun Kim
  • ORGANIC LIGHT-EMITTING DEVICE
    Publication number: 20170054091
    Abstract: 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 includes a first compound selected from organometallic compounds represented by Formula 1, and a second compound selected from compounds represented by Formulae 2 and 3: M1(L1)n1(L2)(L3)??Formula 1
    Type: Application
    Filed: July 21, 2016
    Publication date: February 23, 2017
    Inventors: Hwan-Hee Cho, Myeong-Suk Kim, Sung-Wook Kim, Hee-Yeon Kim