Patents by Inventor Hee-Ryong Kang

Hee-Ryong Kang 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).

  • Substituted 12H-indolo[2,3-b]quinoxalino[2?,3?:4,5]pyrrolo[3,2,1-jk]carbazoles as organic electroluminescent materials
    Patent number: 9935274
    Abstract: The present invention relates to an organic compound represented by the following formula 1. The organic compound according to the present invention can produce an organic electroluminescent device having low driving voltage, excellent current and power efficiencies, and remarkably improved driving lifespan.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: April 3, 2018
    Assignee: Rohm and Haas Electronic Materials Korea Ltd.
    Inventors: Hee-Ryong Kang, Hyun-Ju Kang, Doo-Hyeon Moon, Young-Mook Lim, Bitnari Kim, Nam-Kyun Kim
  • A PLURALITY OF HOST MATERIALS AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
    Publication number: 20180033975
    Abstract: The present disclosure relates to a plurality of host materials and organic electroluminescent device comprising the same. By comprising a specific combination of a plurality of host materials, the organic electroluminescent device of the present disclosure can show long lifespan while maintaining high luminous efficiency.
    Type: Application
    Filed: February 2, 2016
    Publication date: February 1, 2018
    Inventors: Bitnari Kim, Sang-Hee Cho, Hee-Ryong Kang, Jin-Ri Hong
  • ORGANIC ELECTROLUMINESCENT COMPOUNDS AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
    Publication number: 20180022991
    Abstract: The present invention relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent compound according to the present invention can be comprised in a light-emitting layer or an electron buffer layer, and is effective to produce an organic electroluminescent device having low driving voltage, excellent current and power efficiencies, and significantly improved operational lifespan.
    Type: Application
    Filed: January 21, 2016
    Publication date: January 25, 2018
    Inventors: Hee-Ryong Kang, Jin-Ri Hong, Bitnari Kim, Sang-Hee Cho
  • Organic electroluminescent compound and organic electroluminescent device comprising the same
    Patent number: 9859507
    Abstract: The present disclosure relates to an organic electroluminescent compound of Formula 1 (variables R1-R10 defined herein), and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound according to the present disclosure, it is possible to produce an organic electroluminescent device which can be operated at a lowered driving voltage, shows excellence in luminous efficiency such as current efficiency and power efficiency, and has high color purity and improved lifespan.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: January 2, 2018
    Assignee: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.
    Inventors: Hee-Ryong Kang, Hyun-Ju Kang, Young-Mook Lim, Mi-Ja Lee, Nam-Kyun Kim, Bitnari Kim, Jin-Ri Hong, Doo-Hyeon Moon, Su-Hyun Lee
  • ORGANIC ELECTROLUMINESCENT COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
    Publication number: 20170352814
    Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound according to the present disclosure, it is possible to produce an organic electroluminescent device which has a low driving voltage, excellent current and power efficiencies, and improved operation lifespan.
    Type: Application
    Filed: August 8, 2017
    Publication date: December 7, 2017
    Inventors: Hyun-Ju Kang, Hee-Ryong Kang, Young-Gil Kim, Chi-Sik Kim, Seon-Woo Lee, Jeong-Eun Yang, Hee-Choon Ahn, Kyoung-Jin Park, Tae-Jin Lee
  • A NOVEL COMBINATION OF A HOST COMPOUND AND A DOPANT COMPOUND AND AN ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
    Publication number: 20170335181
    Abstract: Disclosed herein are combinations of a dopant compound and a host compound. The dopant being an Iridium complex and the host being a carbazole derivative. Also made known are electroluminescent devices comprising the same.
    Type: Application
    Filed: November 4, 2015
    Publication date: November 23, 2017
    Inventors: Hyun Kim, Hee-Ryong Kang, Sung-Woo Jang, Bitnari Kim
  • Organic electroluminescent compound and organic electroluminescent device comprising the same
    Patent number: 9806271
    Abstract: The present disclosure relates to an organic electroluminescent compound of Formula 1 (variables Y1, Y2 and R1 to R4 defined herein), and an organic electroluminescent device comprising the same. The organic electroluminescent compound according to the present disclosure can be used for the manufacture of an organic electroluminescent device showing improvement in luminous efficiency, especially in current efficiency.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: October 31, 2017
    Assignee: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.
    Inventors: Mi-Ja Lee, Bitnari Kim, Nam-Kyun Kim, Hee-Ryong Kang
  • A PLURALITY OF HOST MATERIALS AND AN ORGANIC ELECTROLUMINESCENCE DEVICE COMPRISING THE SAME
    Publication number: 20170309841
    Abstract: The present invention relates to a plurality of host materials and an organic electroluminescent device comprising the same. By comprising a specific combination of a plurality of host compounds, the organic electroluminescent device according to the present invention provides high efficiency and a long lifespan.
    Type: Application
    Filed: October 16, 2015
    Publication date: October 26, 2017
    Inventors: Hyun Kim, Hee-Ryong Kang, Doo-Hyeon Moon, Hyun-Ju Kang, Hong-Yeop Na, Bitnari Kim
  • ORGANIC ELECTROLUMINESCENT COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
    Publication number: 20170301867
    Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent compound of the present disclosure has good color purity, solubility, and thermal stability. By comprising the organic electroluminescent compound of the present disclosure, an organic electroluminescent device showing low driving voltage, excellent current and power efficiencies, and significantly improved lifespan can be provided.
    Type: Application
    Filed: September 25, 2015
    Publication date: October 19, 2017
    Applicant: Rohm and Haas Electronic Materials Korea Ltd.
    Inventors: Bitnari Kim, Hee-Ryong Kang, Hyun-Ju Kang, Jin-Ri Hong, Young-Mook Lim, Doo-Hyeon Moon
  • ORGANIC ELECTROLUMINESCENT COMPOUND, AND ORGANIC ELECTROLUMINESCENT MATERIAL AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
    Publication number: 20170294590
    Abstract: The present disclosure relates to an organic electroluminescent compound, and an organic electroluminescent material and an organic electroluminescent device comprising the same. The organic electroluminescent compound of the present disclosure has excellent color purity, solubility, and thermal stability. By comprising the organic electroluminescent compound and the organic electroluminescent material of the present disclosure, an organic electroluminescent device showing low driving voltage, excellent current and power efficiencies, and significantly improved lifespan can be provided.
    Type: Application
    Filed: September 25, 2015
    Publication date: October 12, 2017
    Inventors: Doo-Hyeon Moon, Jeong-Eun Yang, Hee-Ryong Kang, Young-Mook Lim, Ji-Song Jun, Hee-Choon Ahn, Jin-Ri Hong, Su-Hyun Lee, Bitnari Kim, Tae-Jin Lee
  • A PLURALITY OF HOST MATERIALS AND AN ORGANIC ELECTROLUMINESCENCE DEVICE COMPRISING THE SAME
    Publication number: 20170279056
    Abstract: The present invention relates to a plurality of host materials and an organic electroluminescent device comprising the same. By comprising a specific combination of a plurality of host compounds, the organic electroluminescent device according to the present invention provides excellent lifespan characteristics while maintaining high luminous efficiency.
    Type: Application
    Filed: August 20, 2015
    Publication date: September 28, 2017
    Inventors: Bitnari Kim, Nam-Kyun Kim, Hong-Yeop Na, Tae-Jin Lee, Kyung-Hoon Choi, Jae-Hoon Shim, Young-Jun Cho, Hee-Ryong Kang, Young-Mook Lim, Hyun-Ju Kang, Doo-Hyeon Moon, Ji-Song Jun, Hee-Choon Ahn, Young-Kwang Kim, Jin-Ri Hong
  • Organic electroluminescent compound and organic electroluminescent device comprising the same
    Patent number: 9768394
    Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound according to the present disclosure, it is possible to produce an organic electroluminescent device which has a low driving voltage, excellent current and power efficiencies, and improved operation lifespan.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: September 19, 2017
    Assignee: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.
    Inventors: Hyun-Ju Kang, Hee-Ryong Kang, Young-Gil Kim, Chi-Sik Kim, Seon-Woo Lee, Jeong-Eun Yang, Hee-Choon Ahn, Kyoung-Jin Park, Tae-Jin Lee
  • Organic electroluminescent compounds and organic electroluminescent device comprising the same
    Patent number: 9698355
    Abstract: The present invention relates to a novel organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent compound of the present invention has high luminous efficiency, and thus can be used as a host in a light-emitting layer; and an organic electroluminescent device comprising the organic electroluminescent compounds of the present invention has long operating lifespan, provides improved current efficiency and power efficiency, and gives colors having high purity.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: July 4, 2017
    Assignee: Rohm and Haas Electronic Materials Korea Ltd.
    Inventors: Hee-Ryong Kang, Hyun-Ju Kang, Doo-Hyeon Moon, Young-Mook Lim, Bitnari Kim, Nam-Kyun Kim
  • AN ORGANIC ELECTROLUMINESCENT COMPOUND AND AN ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
    Publication number: 20170179406
    Abstract: The present invention relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent compound according to the present invention can produce an organic electroluminescent device having low driving voltage, excellent current and power efficiencies, and remarkably improved driving lifespan.
    Type: Application
    Filed: July 8, 2015
    Publication date: June 22, 2017
    Applicant: Rohm and Haas Electronic Materials Korea Ltd.
    Inventors: Hee-Ryong Kang, Hyun-Ju Kang, Doo-Hyeon Moon, Young-Mook Lim, Bitnari Kim, Nam-Kyun Kim
  • ORGANIC ELECTROLUMINESCENT COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
    Publication number: 20170162797
    Abstract: The present disclosure relates to an organic electroluminescent compound of Formula 1 (variables Y1, Y2 and R1 to R4 defined herein), and an organic electroluminescent device comprising the same. The organic electroluminescent compound according to the present disclosure can be used for the manufacture of an organic electroluminescent device showing improvement in luminous efficiency, especially in current efficiency.
    Type: Application
    Filed: July 10, 2015
    Publication date: June 8, 2017
    Inventors: Mi-Ja LEE, Bitnari KIM, Nam-Kyun KIM, Hee-Ryong KANG
  • ORGANIC ELECTROLUMINESCENT COMPOUND AND AN ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
    Publication number: 20170148998
    Abstract: The present invention relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound according to the present invention, it is possible to produce an organic electroluminescent device having low driving voltage, excellent current and power efficiencies, and noticeably improved driving lifespan.
    Type: Application
    Filed: May 22, 2015
    Publication date: May 25, 2017
    Inventors: Hee-Ryong Kang, Hyun-Ju Kang, Jin-Ri Hong, Doo-Hyeon Moon, Young-Mook Lim, Bitnari Kim, Nam-Kyun Kim
  • ORGANIC ELECTROLUMINESCENT COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
    Publication number: 20170141326
    Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound according to the present disclosure, it is possible to produce an organic electroluminescent device which has a low driving voltage, excellent current and power efficiencies, and improved operation lifespan.
    Type: Application
    Filed: May 27, 2015
    Publication date: May 18, 2017
    Inventors: Hyun-Ju Kang, Hee-Ryong Kang, Young-Gil Kim, Chi-Sik Kim, Seon-Woo Lee, Jeong-Eun Yang, Hee-Choon Ahn, Kyoung-Jin Park, Tae-Jin Lee
  • NOVEL ORGANIC ELECTROLUMINESCENT COMPOUNDS AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
    Publication number: 20170125692
    Abstract: The present invention relates to a novel organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent compound of the present invention has high luminous efficiency, and thus can be used as a host in a light-emitting layer; and an organic electroluminescent device comprising the organic electroluminescent compounds of the present invention has long operating lifespan, provides improved current efficiency and power efficiency, and gives colors having high purity.
    Type: Application
    Filed: June 26, 2015
    Publication date: May 4, 2017
    Inventors: Hee-Ryong Kang, Hyun-Ju Kang, Doo-Hyeon Moon, Young-Mook Lim, Bitnari Kim, Nam-Kyun Kim
  • ORGANIC ELECTROLUMINESCENT COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
    Publication number: 20170047528
    Abstract: The present disclosure relates to an organic electroluminescent compound of Formula 1 (variables R1-R10 defined herein), and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound according to the present disclosure, it is possible to produce an organic electroluminescent device which can be operated at a lowered driving voltage, shows excellence in luminous efficiency such as current efficiency and power efficiency, and has high color purity and improved lifespan.
    Type: Application
    Filed: April 30, 2015
    Publication date: February 16, 2017
    Inventors: Hee-Ryong Kang, Hyun-Ju Kang, Young-Mook Lim, Mi-Ja Lee, Nam-Kyun Kim, Bitnari Kim, Jin-Ri Hong, Doo-Hyeon Moon, Su-Hyun Lee
  • NOVEL ORGANIC ELECTROLUMINESCENCE COMPOUNDS AND ORGANIC ELECTROLUMINESCENCE DEVICE CONTAINING THE SAME
    Publication number: 20150126736
    Abstract: The present invention relates to a novel organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent compound according to the present invention has excellent luminous efficiency, power efficiency, and lifespan characteristic. Using the compounds of the present invention, it is possible to manufacture an OLED device with a long operating lifespan. In addition, the compounds can improve the power efficiency of the device to reduce overall power consumption.
    Type: Application
    Filed: May 2, 2013
    Publication date: May 7, 2015
    Inventors: Young-Jun Cho, Ji-Song Jun, Hee-Ryong Kang, Bong-Ok Kim, Hyuck-Joo Kwon, Kyung-Joo Lee, Seon-Woo Lee, Hong-Yeop Na, Hyo-Nim Shin, Jeong-eun Yang, Soo-Jin Yang