Patents by Inventor Saeyoun Lee

Saeyoun Lee 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: 20170352816
    Abstract: An organic light-emitting device including a first electrode, a second electrode facing the first electrode, and an organic layer disposed between the first electrode and the second electrode, wherein the organic layer has an emission layer, wherein the emission layer includes a host and a thermally activated delayed fluorescent dopant, wherein the dopant includes a condensed cyclic compound represented by Formula 1, and wherein an amount of the dopant is smaller than that of the host: Ar1—Ar2??Formula 1 wherein Ar1 and Ar2 are the same as described in the specification.
    Type: Application
    Filed: October 12, 2016
    Publication date: December 7, 2017
    Inventors: Soonok JEON, Masaki NUMATA, Saeyoun LEE, Hiroshi MIYAZAKI, Jhunmo SON, Myungsun SIM, Namheon LEE, Sooghang IHN
  • CONDENSED CYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20170237015
    Abstract: A condensed cyclic compound represented by Formula 1: Ar1-(L1)a1-Ar2??Formula 1 wherein, in Formula 1, Ar1, Ar2, L1, and a1 are the same as described in the specification.
    Type: Application
    Filed: January 24, 2017
    Publication date: August 17, 2017
    Inventors: Saeyoun LEE, Masaki NUMATA, Hiroshi MIYAZAKI, Soonok JEON, Hosuk KANG, Sooghang IHN, Miyoung CHAE
  • CONDENSED CYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20170186974
    Abstract: A condensed cyclic compound represented by Formula 1: Ar1-L1-L2-Ar2??Formula 1 wherein in Formula 1, Ar1, Ar2, L1, and L2 are the same as described in the specification.
    Type: Application
    Filed: June 1, 2016
    Publication date: June 29, 2017
    Inventors: Yongsik JUNG, Miyoung CHAE, Eunsuk KWON, Sangmo KIM, Hyunjung KIM, Jhunmo SON, Saeyoun LEE, Soonok JEON, Yeonsook CHUNG, Dalho HUH, Joonghyuk KIM, Myungsun SIM
  • Charge transport material, host material, thin film and organic light emitting element
    Patent number: 9634262
    Abstract: A compound represented by the following formula (1) is useful as a charge transporting material. R1 to R6 represent a group represented by the formula (2), R7 represents an aryl group or an aralkyl group, and R11 to R15 represent a hydrogen atom or a substituent.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: April 25, 2017
    Assignee: KYULUX, INC.
    Inventors: Chihaya Adachi, Takuma Yasuda, Takuro Nishimoto, Saeyoun Lee
  • CHARGE TRANSPORT MATERIAL, HOST MATERIAL, THIN FILM AND ORGANIC LIGHT EMITTING ELEMENT
    Publication number: 20160020409
    Abstract: A compound represented by the following formula (1) is useful as a charge transporting material. R1 to R6 represent a group represented by the formula (2), R7 represents an aryl group or an aralkyl group, and R11 to R15 represent a hydrogen atom or a substituent.
    Type: Application
    Filed: March 4, 2014
    Publication date: January 21, 2016
    Inventors: Chihaya ADACHI, Takuma YASUDA, Takuro NISHIMOTO, Saeyoun LEE
  • Organic light-emitting device, and delayed fluorescent material and compound used therefor
    Patent number: 9153788
    Abstract: An organic light-emitting device containing a compound represented by the following general formula in a light light-emitting layer has a high light-emission efficiency. The ring containing Y1, Y2 and Y3 represent a triazine ring or a pyrimidine ring; Z1, Z2 and R1 to R8 represent a hydrogen atom or a substituent; and at least one of R1 to R8 represents a diarylamino group or a carbazolyl group. The compound represented by the general formula (1) contains at least two carbazole structures in the molecule thereof.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: October 6, 2015
    Assignee: KYUSHU UNIVERSITY NATIONAL UNIVERSITY CORPORATION
    Inventors: Chihaya Adachi, Takuma Yasuda, Saeyoun Lee, Hiroko Nomura, Tetsuya Nakagawa
  • ORGANIC LIGHT-EMITTING DEVICE, AND DELAYED FLUORESCENT MATERIAL AND COMPOUND USED THEREFOR
    Publication number: 20140336379
    Abstract: An organic light-emitting device containing a compound represented by the following general formula in a light light-emitting layer has a high light-emission efficiency. The ring containing Y1, Y2 and Y3 represent a triazine ring or a pyrimidine ring; Z1, Z2 and R1 to R8 represent a hydrogen atom or a substituent; and at least one of R1 to R8 represents a diarylamino group or a carbazolyl group. The compound represented by the general formula (1) contains at least two carbazole structures in the molecule thereof.
    Type: Application
    Filed: November 30, 2012
    Publication date: November 13, 2014
    Inventors: Chihaya Adachi, Takuma Yasuda, Saeyoun Lee, Hiroko Nomura, Tetsuya Nakagawa