Patents by Inventor Sung Joon Oh

Sung Joon Oh 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: 20140295097
    Abstract: The present invention relates to a norbornene monomer, a polynorbornene derivative, a liquid crystal alignment film including the same, and a liquid crystal display device including the same. More particularly, the present invention relates to a norbornene monomer, a polynorbornene derivative, a liquid crystal alignment film including the same, and a liquid crystal display device including the same, which have an alignment property by photoreaction, excellent thermal stability and photoreactivity, the increased photo-reaction rate and reliability of the alignment film, thereby showing high manufacturing process efficiency.
    Type: Application
    Filed: March 27, 2014
    Publication date: October 2, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Dai-Seung CHOI, Heon KIM, Sung-Ho CHUN, Sung-Joon OH, Dong-Woo YOO, Yu-Chan KANG
  • Publication number: 20140213815
    Abstract: The present invention relates to a norbornene monomer, a polynorbornene derivative, a liquid crystal alignment film including the same, and a liquid crystal display device including the same. More particularly, the present invention relates to a norbornene monomer, a polynorbornene derivative, a liquid crystal alignment film including the same, and a liquid crystal display device including the same, which have an alignment property by photoreaction, excellent thermal stability and photoreactivity, the increased photo-reaction rate and reliability of the alignment film, thereby showing high manufacturing process efficiency.
    Type: Application
    Filed: March 27, 2014
    Publication date: July 31, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Dai-Seung CHOI, Heon KIM, Sung-Ho CHUN, Sung-Joon OH, Dong-Woo YOO, Yu-Chan KANG
  • Patent number: 8722157
    Abstract: The present invention relates to a norbornene monomer, a polynorbornene derivative, a liquid crystal alignment film including the same, and a liquid crystal display device including the same. More particularly, the present invention relates to a norbornene monomer, a polynorbornene derivative, a liquid crystal alignment film including the same, and a liquid crystal display device including the same, which have an alignment property by photoreaction, excellent thermal stability and photoreactivity, the increased photo-reaction rate and reliability of the alignment film, thereby showing high manufacturing process efficiency.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: May 13, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Dai-Seung Choi, Heon Kim, Sung-Ho Chun, Sung-Joon Oh, Dong-Woo Yoo, Yu-Chan Kang
  • Publication number: 20130190039
    Abstract: Systems and methods for requesting and receiving service that includes a table having an input code such as a Quick Response Code, a smartphone having an application which is utilized to read the input code on the table and which communicates with a computer server that communicates with a computer such as a tablet personal computer used by a provider of the service.
    Type: Application
    Filed: July 23, 2012
    Publication date: July 25, 2013
    Inventors: Kyeong Cheol Lee, Sung Joon Oh
  • Patent number: 7959989
    Abstract: The present invention relates to a novel cyclic olefin compound, a polymer including the cyclic olefin compound, a liquid crystal alignment film including the polymer, and a liquid crystal display device including the liquid crystal alignment film. Since the polymer includes the cyclic olefin compound as a main chain, the thermal stability is excellent and the photoreactive speed is high. Accordingly, the production time can be reduced, the production cost can be reduced, and the anchoring force of the liquid crystal can be increased because the alignment property is stabilized due to the curing.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: June 14, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Heon Kim, Sung-Ho Chun, Hee-Jin Lee, Dmitry Kravchuk, Kyung-Jun Kim, Sang-Kook Kim, Sung-Joon Oh, Hye-Ran Seong, Byung-Hyun Lee, Hye-Won Jeong, Jung-Ho Jo, Yun-Jeong Lee, Dong-Hyun Oh
  • Patent number: 7795361
    Abstract: Provided are a photoreactive polymer that includes a multi-cyclicmulticyclic compound at as its main chain and a method of preparing the same. The photoreactive polymer exhibits excellent thermal stability since it includes a multi-cyclicmulticyclic compound having a high glass transition temperature at as its main chain. In addition, the photoreactive polymer has a relatively large vacancy so that a photoreactive group can move relatively freely in the main chain therein. As a result, a slow photoreaction rate, which is a disadvantage of a conventional polymer material used to form an alignment layer for a liquid crystal display device, can be overcome.
    Type: Grant
    Filed: January 5, 2006
    Date of Patent: September 14, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Heon Kim, Sung Ho Chun, Keon Woo Lee, Sung Joon Oh, Kyungjun Kim, Jungho Jo, Byung Hyun Lee, Min Young Lim, Hye Won Jeong
  • Publication number: 20100076166
    Abstract: The present invention relates to a novel cyclic olefin compound, a polymer including the cyclic olefin compound, a liquid crystal alignment film including the polymer, and a liquid crystal display device including the liquid crystal alignment film. Since the polymer includes the cyclic olefin compound as a main chain, the thermal stability is excellent and the photoreactive speed is high. Accordingly, the production time can be reduced, the production cost can be reduced, and the anchoring force of the liquid crystal can be increased because the alignment property is stabilized due to the curing.
    Type: Application
    Filed: March 6, 2008
    Publication date: March 25, 2010
    Inventors: Heon Kim, Sung-Ho Chun, Hee-Jin Lee, Dmitry Kravchuk, Kyung-Jun Kim, Sang-Kook Kim, Sung-Joon Oh, Hye-Ran Seong, Byung-Hyun Lee, Hye-won Jeong, Jung-Ho Jo, Yun-Jeong Lee, Dong-Hyun Oh
  • Publication number: 20100047481
    Abstract: The present invention relates to a norbornene monomer, a polynorbornene derivative, a liquid crystal alignment film including the same, and a liquid crystal display device including the same. More particularly, the present invention relates to a norbornene monomer, a polynorbornene derivative, a liquid crystal alignment film including the same, and a liquid crystal display device including the same, which have an alignment property by photoreaction, excellent thermal stability and photoreactivity, the increased photo-reaction rate and reliability of the alignment film, thereby showing high manufacturing process efficiency.
    Type: Application
    Filed: August 17, 2009
    Publication date: February 25, 2010
    Inventors: Dai-Seung Choi, Heon Kim, Sung-Ho Chun, Sung-Joon Oh, Dong-Woo Yoo, Yu-Chan Kang
  • Patent number: 7655284
    Abstract: Disclosed is a multi-functional monomer including a heat-curable functional group as well as a typical photoreactive group. In the multi-functional monomer, the photoreactive group is not chained to a main chain of a polymer. Thus, since it is possible to perform desirable alignment treatment even though polarized UV is radiated for a short time, the production time and the production cost are reduced and alignment regulating force of liquid crystals is increased, thereby increasing a dichroic ratio.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: February 2, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Kyung Jun Kim, Keon Woo Lee, Byung Hyun Lee, Min Young Lim, Hye Won Jeong, Jung Ho Jo, Heon Kim, Sung Joon Oh, Sung Ho Chun
  • Patent number: 7541073
    Abstract: The present invention provides a composition for forming a liquid crystal alignment film, which comprises a photoreactive polymer including a multicyclic compound having a photoreactive group on a main chain thereof. The present invention also provides a liquid crystal alignment film produced using the composition, and a liquid crystal display including the liquid crystal alignment film. The photoreactive polymer including the multicyclic compound on the main chain thereof has a high glass transition temperature, thus thermal stability is excellent. Since lattice vacancy is relatively large, the photoreactive group is capable of moving relatively freely in the main chain of the polymer, thus it is possible to improve a slow photoreaction rate, which is considered a disadvantage of a conventional polymer material.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: June 2, 2009
    Assignee: LG Chem, Ltd.
    Inventors: Kyung Jun Kim, Keon Woo Lee, Byung Hyun Lee, Min Young Lim, Hye Won Jeong, Sung Ho Chun, Heon Kim, Sung Joon Oh
  • Patent number: 7422778
    Abstract: Provided are a photoreactive compound represented by formula (1), a liquid crystal alignment layer using the compound, a method of manufacturing the alignment layer, and a liquid crystal display device including the alignment layer: where n is an integer of 20-1000; m is an integer of 1-5; and R is a hydrogen atom, CN, a C1-C5 alkyloxy group, a halogen atom, or a maleimide group.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: September 9, 2008
    Assignee: LG Chem, Ltd.
    Inventors: Byung Hyun Lee, Min Young Lim, Kyungjun Kim, Sung Ho Chun, Sung Joon Oh, Keon Woo Lee, Heon Kim, Hye Won Jeong
  • Patent number: RE45219
    Abstract: Provided are a photoreactive polymer that includes a multi-cyclicmulticyclic compound at as its main chain and a method of preparing the same. The photoreactive polymer exhibits excellent thermal stability since it includes a multi-cyclicmulticyclic compound having a high glass transition temperature at as its main chain. In addition, the photoreactive polymer has a relatively large vacancy so that a photoreactive group can move relatively freely in the main chain therein. As a result, a slow photoreaction rate, which is a disadvantage of a conventional polymer material used to form an alignment layer for a liquid crystal display device, can be overcome.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: October 28, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Heon Kim, Sung Ho Chun, Keon Woo Lee, Sung Joon Oh, Kyungjun Kim, Jungho Jo, Byung Hyun Lee, Min Young Lim, Hye Won Jeong