Patents by Inventor Hyeong-Bin Jang

Hyeong-Bin Jang 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).

  • Patent number: 10527758
    Abstract: The present invention relates to a composition for forming a dye-type polarizer, which can be used to provide a dye-type polarizer showing excellent degree of polarization, heat resistance and dichroic ratio, and to a dye-type polarizer. The composition for forming a dye-type polarizer includes a curable anisotropic dye having a particular chemical structure; and an orientation auxiliary agent having a predetermined chemical structure.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: January 7, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Dong Woo Yoo, Sung-Ho Chun, Kyung Chang Seo, Hyeong Bin Jang
  • Patent number: 9850196
    Abstract: The present invention relates to a reverse wavelength dispersion compound, a reverse wavelength dispersion composition including the same, and an optically anisotropic body including the same. The reverse wavelength dispersion composition according to the present invention can provide a stronger and more stable reverse wavelength dispersion property, and makes it possible to provide an optically anisotropic body having excellent optical properties.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: December 26, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Min Hyung Lee, Sung-Ho Chun, Kyung Chang Seo, Jung Hyun Kim, Mi Ra Hong, Hyeong Bin Jang, Jeong Wook Mun
  • Patent number: 9791745
    Abstract: Disclosed therein are a photoalignment polyimide copolymer making it easier to form a liquid crystal alignment layer with excellences in alignment properties, thermal and structural stabilities, and adhesiveness to a substrate, and a liquid crystal alignment layer using the same. The photoalignment polyimide copolymer includes all the three types of repeating units each having a defined structure.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: October 17, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Seung-Yeon Hwang, Sung-Ho Chun, Dong-Woo Yoo, Hyeong-Bin Jang
  • Patent number: 9720136
    Abstract: This invention relates to a photo-alignment copolymer which enables the formation of an optical anisotropic film that exhibits superior optical anisotropy, an optical anisotropic film using the photo-alignment copolymer and a method of manufacturing the optical anisotropic film. The photo-alignment copolymer includes both of a photo-alignment repeating unit having a photo-reactive functional group such as a cinnamate-based functional group, a chalcone-based functional group, an azo-based functional group or a coumarin-based functional group, and a repeating unit having a specific structure able to increase optical anisotropy.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: August 1, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Dai Seung Choi, Dong Woo Yoo, Sung-Ho Chun, Hyeong Bin Jang, Mi Ra Hong
  • Patent number: 9505979
    Abstract: The present invention relates to a polymerizable liquid crystal compound, a liquid crystal composition including the same, and an optical film including the same. The polymerizable liquid crystal compound according to the present invention has at least two functional groups making intermolecular interaction possible in its molecule, and thus it is possible to form a liquid crystal layer having high orientation stability by coating the composition including the same. According to this, the optical film prepared by using the composition can be suitably used in anti-reflection films and so on for liquid crystal displays or OLED displays.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: November 29, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Min Hyung Lee, Young Jee Song, Sung-Ho Chun, Kyung Chang Seo, Hyeong Bin Jang, Ji Young Choi
  • Publication number: 20160274274
    Abstract: The present invention relates to a composition for forming a dye-type polarizer, which can be used to provide a dye-type polarizer showing excellent degree of polarization, heat resistance and dichroic ratio, and to a dye-type polarizer. The composition for forming a dye-type polarizer includes a curable anisotropic dye having a particular chemical structure; and an orientation auxiliary agent having a predetermined chemical structure.
    Type: Application
    Filed: December 22, 2014
    Publication date: September 22, 2016
    Inventors: Dong Woo YOO, Sung-Ho CHUN, Kyung Chang SEO, Hyeong Bin JANG
  • Patent number: 9416317
    Abstract: The present description relates to a polymerizable liquid crystal compound, a polymerizable liquid crystal composition including the same, and an optically anisotropic body.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: August 16, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Dai Seung Choi, Sung-Ho Chun, Dong-Woo Yoo, Mi Ra Hong, Kyung Chang Seo, Hyeong Bin Jang, Jung Hyun Kim, Min Hyung Lee, Eun Seok Park
  • Publication number: 20160200662
    Abstract: The present invention relates to a reverse wavelength dispersion compound, a reverse wavelength dispersion composition including the same, and an optically anisotropic body including the same. The reverse wavelength dispersion composition according to the present invention can provide a stronger and more stable reverse wavelength dispersion property, and makes it possible to provide an optically anisotropic body having excellent optical properties.
    Type: Application
    Filed: September 19, 2014
    Publication date: July 14, 2016
    Applicant: LG CHEM, Ltd.
    Inventors: Min Hyung LEE, Sung-Ho CHUN, Kyung Chang SEO, Jung Hyun KIM, Mi Ra HONG, Hyeong Bin JANG, Jeong Wook MUN
  • Publication number: 20160200977
    Abstract: The present invention relates to a polymerizable liquid crystal compound, a liquid crystal composition including the same, and an optical film including the same. The polymerizable liquid crystal compound according to the present invention has at least two functional groups making intermolecular interaction possible in its molecule, and thus it is possible to form a liquid crystal layer having high orientation stability by coating the composition including the same. According to this, the optical film prepared by using the composition can be suitably used in anti-reflection films and so on for liquid crystal displays or OLED displays.
    Type: Application
    Filed: September 19, 2014
    Publication date: July 14, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Min Hyung LEE, Young Jee SONG, Sung-Ho CHUN, Kyung Chang SEO, Hyeong Bin JANG, Ji Young CHOI
  • Patent number: 9366907
    Abstract: This invention relates to a composition for a photo-alignment layer which can exhibit superior thermal stability, alignability, and alignment rate, and can also suppress generation of an afterimage and further improve a voltage holding ratio when applied to a liquid crystal cell, and to a photo-alignment layer and a liquid crystal alignment layer using the same. The composition for a photo-alignment layer includes a cyclic olefin-based photo-alignment polymer and a polyamic acid ester-based photo-alignment additive.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: June 14, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Hyeong Bin Jang, Sung-Ho Chun, Dong Woo Yoo, Seung Yeon Hwang
  • Publication number: 20160024385
    Abstract: The present description relates to a polymerizable liquid crystal compound, a polymerizable liquid crystal composition including the same, and an optically anisotropic body.
    Type: Application
    Filed: August 7, 2015
    Publication date: January 28, 2016
    Inventors: Dai Seung CHOI, Sung Ho CHUN, Dong Woo YOO, Mi Ra HONG, Kyung Chang SEO, Hyeong Bin JANG, Jung Hyun KIM, Min Hyung LEE, Eun Seok PARK
  • Patent number: 9206355
    Abstract: The present description relates to a polymerizable liquid crystal compound, a polymerizable liquid crystal composition including the same, and an optically anisotropic body.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: December 8, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Dai Seung Choi, Sung Ho Chun, Dong Woo Yoo, Mi Ra Hong, Kyung Chang Seo, Hyeong Bin Jang, Jung Hyun Kim, Min Hyung Lee, Eun Seok Park
  • Patent number: 9158053
    Abstract: The present invention relates to a polymerizable liquid crystal compound, a liquid crystal composition including the same, and an optically anisotropic body. The polymerizable liquid crystal compound according to the present invention has not only high birefringence but also excellent coating orientation, and thus it is possible to prepare a optically anisotropic body which is thin but superior in optical properties.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: October 13, 2015
    Assignee: LG CHEM, LTD.
    Inventors: Kyung-Chang Seo, Sung-Ho Chun, Dai-Seung Choi, Mi-Ra Hong, Hyeong-Bin Jang
  • Patent number: 9127103
    Abstract: The present invention relates to a polymerizable liquid crystal compound, a liquid crystal composition including the same, and an optically anisotropic body. The polymerizable liquid crystal compound according to the present invention has not only large solubility in various solvents but also high birefringence and excellent coating orientation, and thus it can provide an optically anisotropic body which is thin but superior in optical properties.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: September 8, 2015
    Assignee: LG CHEM, LTD.
    Inventors: Kyung Chang Seo, Sung-Ho Chun, Dai Seung Choi, Mi-Ra Hong, Hyeong Bin Jang
  • Patent number: 9127104
    Abstract: The present invention relates to a polymerizable liquid crystal compound, a liquid crystal composition including the same, and an optically anisotropic body. The polymerizable liquid crystal compound according to the present invention has not only high birefringence but also excellent coating orientation, and thus it is possible to prepare a optically anisotropic body which is thin but superior in optical properties.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: September 8, 2015
    Assignee: LG CHEM, LTD.
    Inventors: Kyung Chang Seo, Sung-Ho Chun, Dai Seung Choi, Mi-Ra Hong, Hyeong Bin Jang
  • Publication number: 20150241737
    Abstract: This invention relates to a composition for a photo-alignment layer which can exhibit superior thermal stability, alignability, and alignment rate, and can also suppress generation of an afterimage and further improve a voltage holding ratio when applied to a liquid crystal cell, and to a photo-alignment layer and a liquid crystal alignment layer using the same. The composition for a photo-alignment layer includes a cyclic olefin-based photo-alignment polymer and a polyamic acid ester-based photo-alignment additive.
    Type: Application
    Filed: September 10, 2013
    Publication date: August 27, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Hyeong Bin Jang, Sung-Ho Chun, Dong Woo Yoo, Seung Yeon Hwang
  • Publication number: 20150219794
    Abstract: This invention relates to a photo-alignment copolymer which enables the formation of an optical anisotropic film that exhibits superior optical anisotropy, an optical anisotropic film using the photo-alignment copolymer and a method of manufacturing the optical anisotropic film. The photo-alignment copolymer includes both of a photo-alignment repeating unit having a photo-reactive functional group such as a cinnamate-based functional group, a chalcone-based functional group, an azo-based functional group or a coumarin-based functional group, and a repeating unit having a specific structure able to increase optical anisotropy.
    Type: Application
    Filed: August 27, 2013
    Publication date: August 6, 2015
    Inventors: Dai Seung Choi, Dong Woo Yoo, Sung-Ho Chun, Hyeong Bin Jang, Mi Ra Hong
  • Patent number: 9052548
    Abstract: The present invention relates to a photo-curable composition that can provide a film, etc. showing excellent optical anisotropy even without need for separately forming a liquid crystal layer and an alignment layer, an optical anisotropic film using the same, and its preparation method. The photo-curable composition comprises a photo-alignable polymer, a noncrosslinkable liquid crystal compound and a photo-curable binder.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: June 9, 2015
    Assignee: LG CHEM, LTD.
    Inventors: Dai-Seung Choi, Dong-Woo Yoo, Sung-Ho Chun, Mi-Ra Hong, Jeong-Yoon Han, Hyeong-Bin Jang
  • Publication number: 20150115199
    Abstract: The present description relates to a polymerizable liquid crystal compound, a polymerizable liquid crystal composition including the same, and an optically anisotropic body.
    Type: Application
    Filed: April 19, 2013
    Publication date: April 30, 2015
    Inventors: Dai Seung Choi, Sung Ho Chun, Dong Woo Yoo, Mi Ra Hong, Kyung Chang Seo, Hyeong Bin Jang, Jung Hyun Kim, Min Hyung Lee, Eun Seok Park
  • Publication number: 20150112035
    Abstract: The present invention relates to a polymerizable liquid crystal compound, a liquid crystal composition including the same, and an optically anisotropic body. The polymerizable liquid crystal compound according to the present invention has not only large solubility in various solvents but also high birefringence and excellent coating orientation, and thus it can provide an optically anisotropic body which is thin but superior in optical properties.
    Type: Application
    Filed: June 11, 2013
    Publication date: April 23, 2015
    Inventors: Kyung Chang Seo, Sung-Ho Chun, Dai Seung Choi, Mi-Ra Hong, Hyeong Bin Jang