Patents by Inventor Hyo-Ju Seo

Hyo-Ju Seo 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: 20150144937
    Abstract: Provided are a compound represented by the following Chemical Formula 1 for an organic optoelectronic device, an organic light emitting diode including the same, and a display device including the organic light emitting diode. The structure of Chemical Formula 1 is described in the specification. The compound for the organic photoelectric device provides an organic light emitting diode having excellent life-span characteristics due to excellent electrochemical and thermal stability and high luminous efficiency at a low driving voltage.
    Type: Application
    Filed: February 3, 2015
    Publication date: May 28, 2015
    Inventors: Moo-Jin PARK, Eun-Sun YU, Mi-Young CHAE, Byung-Ku KIM, Hyo-Ju SEO, Jae-Deuk YANG
  • Patent number: 8722158
    Abstract: Disclosed is a liquid crystal photo-alignment agent and a liquid crystal photo-alignment film manufactured using the same. The liquid crystal photo-alignment agent includes an epoxy compound represented by Chemical Formula 1, and a polymer including a polyamic acid, a polyimide, or a mixture thereof.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: May 13, 2014
    Assignee: Cheil Industries Inc.
    Inventors: Hyo-Ju Seo, Tae-Hyoung Kwak, Dong-Seon Uh, Jae-Deuk Yang
  • Publication number: 20130123438
    Abstract: Disclosed is a liquid crystal alignment agent that includes a polymer including a polyamic acid including a repeating unit represented by the following Chemical Formula 1, polyimide including a repeating unit represented by the following Chemical Formula 2, or a combination thereof, wherein in Chemical Formulas 1 and 2, X1, X2, Y1 and Y2 are the same as defined in the detailed description.
    Type: Application
    Filed: August 10, 2012
    Publication date: May 16, 2013
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Tae-Hyoung KWAK, Bum-Jin LEE, Jun-Seok KIM, Won-Seok DONG, Kyung-Soo MOON, Hyo-Ju SEO, Yo-Choul PARK, Yong-Tak YANG, Jung-Ah CHOI
  • Publication number: 20120172541
    Abstract: A liquid crystal alignment agent includes a first polymer including polyamic acid including a repeating unit represented by the following Chemical Formula 1, polyimide including a repeating unit represented by the following Chemical Formula 2, or a combination thereof. A liquid crystal alignment film manufactured using the liquid crystal alignment agent, and a liquid crystal display including the liquid crystal alignment film are also provided.
    Type: Application
    Filed: July 26, 2011
    Publication date: July 5, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Won-Seok DONG, Bum-Jin LEE, Tae-Hyoung KWAK, Yo-Choul PARK, Hyo-Ju SEO, Hwan-Sung CHEON, Won-Ho CHOI
  • Publication number: 20120116045
    Abstract: Disclosed is a liquid crystal alignment agent including a polymer including polyamic acid including a repeating unit represented by Chemical Formula 1, polyimide including a repeating unit represented by Chemical Formula 2, or a combination thereof.
    Type: Application
    Filed: June 17, 2011
    Publication date: May 10, 2012
    Applicant: Cheil Industries Inc.
    Inventors: Tae-Hyoung KWAK, Bum-Jin LEE, Won-Seok DONG, Yo-Choul PARK, Hyo-Ju SEO, Hwan-Sung CHEON, Won-Ho CHOI
  • Patent number: 8088301
    Abstract: Disclosed is an epoxy compound for a liquid crystal photo-alignment agent, a liquid crystal photo-alignment agent, and a liquid crystal photo-alignment film. The epoxy compound is represented by the following Chemical Formula 1. In the above Chemical Formula 1, each substituent is the same as defined in the specification. Since the epoxy compound according to an embodiment of the present invention may be prepared through a simple manufacturing process, it is possible to provide a liquid crystal photo-alignment agent and a liquid crystal photo-alignment film that are economical and have excellent substrate printability and reliability, and superb photoelectric characteristics.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: January 3, 2012
    Assignee: Cheil Industries Inc.
    Inventors: Jae-Deuk Yang, Dong-Seon Uh, Tae-Hyoung Kwak, Hyo-Ju Seo
  • Publication number: 20110230606
    Abstract: Disclosed is a liquid crystal photo-alignment agent and a liquid crystal photo-alignment film manufactured using the same. The liquid crystal photo-alignment agent includes an epoxy compound represented by Chemical Formula 1, and a polymer including a polyamic acid, a polyimide, or a mixture thereof.
    Type: Application
    Filed: June 2, 2011
    Publication date: September 22, 2011
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Hyo-Ju SEO, Tae-Hyoung KWAK, Dong-Seon UH, Jae-Deuk YANG
  • Publication number: 20100155661
    Abstract: Disclosed is an epoxy compound for a liquid crystal photo-alignment agent, a liquid crystal photo-alignment agent, and a liquid crystal photo-alignment film. The epoxy compound is represented by the following Chemical Formula 1. In the above Chemical Formula 1, each substituent is the same as defined in the specification. Since the epoxy compound according to an embodiment of the present invention may be prepared through a simple manufacturing process, it is possible to provide a liquid crystal photo-alignment agent and a liquid crystal photo-alignment film that are economical and have excellent substrate printability and reliability, and superb photoelectric characteristics.
    Type: Application
    Filed: December 8, 2009
    Publication date: June 24, 2010
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Jae-Deuk YANG, Dong-Seon UH, Tae-Hyoung KWAK, Hyo-Ju SEO