Patents by Inventor Chang-Jun YUN

Chang-Jun YUN 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: 10961457
    Abstract: The present invention relates to liquid-crystalline media comprising a) one or more compounds of the formula ST-1, as defined herein, and b) one or more compounds of the formula ST-2, as defined herein, and c) one or more compounds of the formula RV, as defined herein, and d) one or more compounds selected from formula IA and IB, as defined herein, and to liquid-crystal displays containing these media, especially to displays addressed by an active matrix and in particular to displays of the in-plane switching (IPS) or fringe-field switching (FFS) type.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: March 30, 2021
    Assignee: Merck Patent GmbH
    Inventors: Chang-Jun Yun, Chang-Suk Choi, Yeon-Jeong Han, Heui-Seok Jin, Yong-Kuk Yun
  • Publication number: 20200071616
    Abstract: Dielectrically positive liquid-crystalline media comprising one or more compounds of each of the formulae S1 and S2, and one or more compounds selected from the group of the compounds of the formulae II and III and/or IV and/or VIII, in which the parameters have the meanings indicated in the specification, and optionally one or more further dielectrically positive compounds and optionally one or more further dielectrically neutral compounds. Also, liquid-crystal displays, especially active-matrix displays and in particular TN, IPS and FFS displays, containing these media.
    Type: Application
    Filed: August 28, 2019
    Publication date: March 5, 2020
    Applicant: MERCK PATENT GMBH
    Inventors: Chang-Suk CHOI, Chang-Jun YUN, Yeon-Jeong HAN, Hee-Kyu LEE, Yong-Kuk YUN
  • Publication number: 20180265785
    Abstract: The present invention relates to liquid-crystalline media comprising a) one or more compounds of the formula ST-1, as defined herein, and b) one or more compounds of the formula ST-2, as defined herein, and c) one or more compounds of the formula RV, as defined herein, and d) one or more compounds selected from formula IA and IB, as defined herein, and to liquid-crystal displays containing these media, especially to displays addressed by an active matrix and in particular to displays of the in-plane switching (IPS) or fringe-field switching (FFS) type.
    Type: Application
    Filed: March 16, 2018
    Publication date: September 20, 2018
    Applicant: Merck Patent GmbH
    Inventors: Chang-Jun YUN, Chang-Suk CHOI, Yeon-Jeong HAN, Heui-Seok JIN, Yong-Kuk YUN
  • Publication number: 20180265786
    Abstract: Liquid-crystalline media containing a) one or more compounds of formula IA, and b) one or more compounds of formula II and c) one or more compounds of formulae III-1 to III-4, their use in electro-optical displays, particularly in active-matrix displays based on the VA, ECB, FFS or IPS effect.
    Type: Application
    Filed: March 16, 2018
    Publication date: September 20, 2018
    Applicant: MERCK PATENT GMBH
    Inventors: Chang-Suk Choi, Chang-Jun Yun, Yeon-Jeong Han, Heui-Seok Jin, Yong-Kuk Yun
  • Publication number: 20180265784
    Abstract: A liquid-crystalline medium which comprises at least one compound of the formula I, and one or more compounds of the formula ST and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PA-VA, SS-VA, SA-VA, PS-VA, PALC, IPS, PS-IPS, UB-FFS, U-IPS, FFS or PS-FFS effect.
    Type: Application
    Filed: March 16, 2018
    Publication date: September 20, 2018
    Applicant: MERCK PATENT GMBH
    Inventors: Chang-Suk CHOI, Chang-Jun YUN, Yeon-Jeong HAN, Heui-Seok JIN, Yong-Kuk YUN
  • Publication number: 20180195002
    Abstract: The present invention relates to liquid-crystalline media comprising one or more compounds selected from the compounds of formula I and compounds of formulae CV, OT and CP wherein the occurring groups have the meanings defined herein, and to liquid-crystal displays containing these media, especially to active-matrix displays and in particular to IPS and FFS displays. The invention further relates to a process for the fabrication of liquid crystal displays using the ODF process.
    Type: Application
    Filed: January 9, 2018
    Publication date: July 12, 2018
    Applicant: MERCK PATENT GMBH
    Inventors: Chang-Jun YUN, Chang-Suk CHOI, Yeon-Jeong HAN, Heui-Seok JIN, Yong-Kuk YUN