Patents by Inventor Yong-Kuk Yun

Yong-Kuk 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).

  • 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: 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: 20180258346
    Abstract: The present invention relates to liquid-crystalline media (LC media) comprising a low-molecular-weight component, a self-alignment additive comprising a thiol group and optionally a polymerizable component. The self-alignment additives effect homeotropic (vertical) alignment of the LC media at a surface or the cell walls of a liquid-crystal display (LC display). The invention therefore also encompasses LC displays having homeotropic alignment of the liquid-crystalline medium (LC medium) without alignment layers. The invention discloses novel structures for self-alignment additives which have a thiol functional groups.
    Type: Application
    Filed: August 16, 2016
    Publication date: September 13, 2018
    Applicant: MERCK PATENT GMBH
    Inventors: Yong-Kuk YUN, Min-Ok JIN, Hyun-Jin YOON, Mi-Nam PARK, Rocco FORTTE, Graziano ARCHETTI, Thorsten KODEK, Izumi SAITO
  • 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
  • Publication number: 20180134959
    Abstract: The present invention relates to a liquid crystal (LC) medium comprising a polymerisable compound, to a process for its preparation, to its use for optical, electro-optical and electronic purposes, in particular in LC displays, especially in an LC display of the polymer sustained alignment (PSA) type, and to an LC display, especially a PSA display, comprising it.
    Type: Application
    Filed: April 29, 2016
    Publication date: May 17, 2018
    Applicant: MERCK PATENT GMBH
    Inventors: Eun-Kyu LEE, Jin-Soon PARK, Hyun-Jin YOON, Min-OK JIN, Yong-Kuk YUN
  • Patent number: 9963637
    Abstract: The present invention relates to a liquid crystalline medium comprising a polymerizable compound, to a process for its preparation, to its use for optical, electro-optical and electronic purposes, in particular in liquid crystalline displays, especially in a liquid crystalline display of the polymer sustained alignment (PSA) type, and to a liquid crystalline display, especially a PSA display, comprising it.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: May 8, 2018
    Assignee: Merck Patent GmbH
    Inventors: Eun-Kyu Lee, Hyun-Jin Yoon, Ji-Won Jeong, Hye-Ryung Park, Seung-Jai Kim, Yong-Jun Ji, Min-Ok Jin, Yong-Kuk Yun
  • Publication number: 20180044591
    Abstract: The present invention relates to a liquid crystal (LC) medium comprising a polymerizable compound, to a process for its preparation, to its use for optical, electro-optical and electronic purposes, in particular in LC displays, especially in an LC display of the polymer sustained alignment (PSA) type, and to an LC display, especially a PSA display, comprising it.
    Type: Application
    Filed: August 4, 2017
    Publication date: February 15, 2018
    Applicant: MERCK PATENT GMBH
    Inventors: Ji-Won JEONG, Eun-Kyu LEE, Hyun-Jin YOON, Min-Ok JIN, Yong-Kuk YUN
  • Publication number: 20180002604
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds comprising a self-alignment additive for vertical alignment and additionally at least one compound of formula I as described more closely within this disclosure (polymerizable HALS), especially for vertically aligned display applications.
    Type: Application
    Filed: June 23, 2017
    Publication date: January 4, 2018
    Applicant: Merck Patent GmbH
    Inventors: Hyun-Jin YOON, Mi-Na PARK, Ji-Won JEONG, Eun-Kyu LEE, Min-Ok JIN, Yong-Kuk YUN
  • Publication number: 20170335194
    Abstract: The invention relates to a liquid-crystalline medium, in particular based on a mixture of polar compounds, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PA-VA, PALC, FFS, PS-FFS, IPS or PS-IPS effect.
    Type: Application
    Filed: May 17, 2017
    Publication date: November 23, 2017
    Applicant: MERCK PATENT GMBH
    Inventors: Eun-Kyu LEE, Ji-Won JEONG, Min-Ok JIN, Yong-Kuk YUN
  • Publication number: 20170253801
    Abstract: The present invention relates to liquid crystalline (LC) medium, to a method of its production and to the use of such LC media in polymer network liquid crystalline (PNLC) light modulation elements operated in the reverse mode. Furthermore, the present invention relates to such light modulation elements, as such, to the use of such light modulation elements as light shutters for transparent OLED displays, and to a method of production of such light modulation elements according to the present invention.
    Type: Application
    Filed: March 1, 2017
    Publication date: September 7, 2017
    Applicant: Merck Patent GmbH
    Inventors: Hyun-Woo BAE, Dong-Mee SONG, Hoo-Yong Lee, Jung-Min LEE, Yong-Kuk Yun
  • Patent number: 9719016
    Abstract: Disclosed are a liquid crystal (LC) medium containing a polymerisable compound, a process for its preparation, its use for optical, electro-optical and electronic purposes, in particular in LC displays, especially in an LC display of the polymer sustained alignment (PSA) type, and to an LC display, especially a PSA display.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: August 1, 2017
    Assignee: Merck Patent GmbH
    Inventors: Ji-Won Jeong, Hyun-Jin Yoon, Eun-Kyu Lee, Min-Ok Jin, Yong-Kuk Yun
  • Publication number: 20160215214
    Abstract: Disclosed are a liquid crystal (LC) medium containing a polymerisable compound, a process for its preparation, its use for optical, electro-optical and electronic purposes, in particular in LC displays, especially in an LC display of the polymer sustained alignment (PSA) type, and to an LC display, especially a PSA display.
    Type: Application
    Filed: January 21, 2016
    Publication date: July 28, 2016
    Applicant: Merck Patent GmbH
    Inventors: Ji-Won JEONG, Hyun-Jin YOON, Eun-Kyu LEE, Min-Ok JIN, Yong-Kuk YUN
  • Publication number: 20160215216
    Abstract: The invention relates to a polymer film comprising a polymerised liquid crystal (LC) material with improved adhesion to a substrate, to methods for preparing such a polymer film, to a polymerisable LC material used for the preparation of such a polymer film, and to the use of the polymer film and said polymerisable LC material for optical, electrooptical, decorative or security uses and devices.
    Type: Application
    Filed: July 31, 2014
    Publication date: July 28, 2016
    Applicant: MERCK PATENT GMBH
    Inventors: Hyun-Jin YOON, Yong-Kuk YUN, Heui-Seok JIN, Yong-Hyun CHOI
  • Publication number: 20160152894
    Abstract: The present invention relates to a liquid crystal (LC) medium comprising a terphenyl compound and at least two polymerisable compounds, to a process for its preparation, to its use for optical, electro-optical and electronic purposes, in particular in LC displays, especially in an LC display of the polymer sustained alignment (PSA) type, and to an LC display, especially a PSA display, comprising it.
    Type: Application
    Filed: December 1, 2015
    Publication date: June 2, 2016
    Applicant: MERCK PATENT GMBH
    Inventors: Hyun-Jin YOON, Ji-Won JEONG, Eun-Kyu LEE, Min-Ok JIN, Yong-Kuk YUN
  • Publication number: 20160137923
    Abstract: The present invention relates to a liquid crystal (LC) medium comprising a terphenyl compound and at least two polymerizable compounds, to a process for its preparation, to its use for optical, electro-optical and electronic purposes, in particular in LC displays, especially in an LC display of the polymer sustained alignment (PSA) type, and to an LC display, especially a PSA display, comprising it.
    Type: Application
    Filed: November 13, 2015
    Publication date: May 19, 2016
    Applicant: MERCK PATENT GMBH
    Inventors: Hyun-Jin YOON, Ji-Won JEONG, Eun-Kyu LEE, Min-Ok JIN, Yong-Kuk YUN
  • Publication number: 20150036095
    Abstract: The invention relates to a liquid-crystalline medium which contains at least two polymerisable compounds or reactive mesogens (RM) and at least one compound selected from the group of compounds of the formula IIA, IIB and IIC, in which R2A, R2B, R2C, L1-6, ring B, Z2, Z2, p, q and v have the meanings indicated in Claim 1, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PALC, FFS, PS-FFS, IPS or PS-IPS effect, especially for the use in LC displays of the PS (polymer stabilised) or PSA (polymer sustained alignment) type.
    Type: Application
    Filed: February 12, 2013
    Publication date: February 5, 2015
    Applicant: Merck Patent GmbH
    Inventors: Ji-Won Jeong, Yong-Kuk Yun, Dong-Mee Song, Jung-Min Lee
  • Patent number: 8884290
    Abstract: A thin film transistor array panel, a display device including the thin film transistor array panel, and a method for manufacturing the display device. The thin film transistor array panel includes a substrate having first and second surfaces, a first thin film form formed on the first surface and including a first electrode, and a second thin film form formed on the second surface and including a second electrode, to thereby improve the viewing angle and contrast ratio of the display device.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: November 11, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Keun-Chan Oh, Yong-Kuk Yun, Woo-Jin Bae
  • Patent number: 8610867
    Abstract: Provided are a liquid crystal composition and a liquid crystal display (LCD) including the liquid crystal composition. The LCD includes a first display panel a second display panel facing the first display panel, and a liquid crystal composition disposed between the first display panel and the second display panel. If a dielectric constant in a direction parallel to a long axis of liquid crystals is defined as a horizontal dielectric constant ??, a dielectric constant in a direction perpendicular to the long axis of the liquid crystals is defined as a vertical dielectric constant ??, and the difference between the vertical dielectric constant ?? and the horizontal dielectric constant ?? is defined as dielectric anisotropy ??, then a ratio ??/?? of the dielectric anisotropy ?? to the vertical dielectric constant ?? of the liquid crystal composition is 0.5 or less.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: December 17, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Gyu Kim, Kyoung-Ju Shin, Jong-Ho Son, Yong-Kuk Yun, Jun-Pyo Lee, Seunng-Soo Baek
  • Patent number: 8259273
    Abstract: A liquid crystal includes about 60 wt % to about 80 wt % of a first compound material, about 2 wt % to about 15 wt % of a second compound material, and a neutral compound material. The first compound material has a dielectric anisotropy of a first polarity, and the second compound material has a dielectric anisotropy of a second polarity.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: September 4, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Wuk Kim, Jae-Jin Lyu, Yong-Kuk Yun
  • Publication number: 20110170044
    Abstract: A liquid crystal includes about 60 wt % to about 80 wt % of a first compound material, about 2 wt % to about 15 wt % of a second compound material, and a neutral compound material. The first compound material has a dielectric anisotropy of a first polarity, and the second compound material has a dielectric anisotropy of a second polarity.
    Type: Application
    Filed: March 28, 2011
    Publication date: July 14, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyun-Wuk KIM, Jae-Jin LYU, Yong-Kuk Yun