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).

  • Patent number: 7326450
    Abstract: The present invention relates to a high-speed high-temperature nematic liquid crystal composition and a liquid crystal display comprising the same, particularly to a high-speed high-temperature nematic liquid crystal composition which comprises a nematic liquid crystal compound having an isothionate group on the end aromatic ring and having one or more kinds of fluorine atoms, and thus satisfies a high response speed property and has a high phase transition temperature of liquid crystal, a low operating voltage, and a broad nematic phase temperature range, and a liquid crystal cell comprising the same, and a liquid crystal display using the same.
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: February 5, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-Kuk Yun, Bong-Hee Kim, Bong-Sung Seo, Byeong-Seob Ban
  • Publication number: 20070272897
    Abstract: The present invention discloses a liquid crystal composition having a first class compound including a fluorine-containing compound, and a second class compound including a neutral liquid crystal compound, where each terminal group of the neutral crystal compound includes an alkyl group, an alkoxy group, or an alkenyl group. If the neutral liquid crystal compound includes an alkenyl group at the terminal group, the liquid crystal composition includes less than 7 wt % of the neutral crystal compound including the alkenyl group. The present invention also discloses a liquid crystal display including the aforementioned liquid crystal composition.
    Type: Application
    Filed: November 6, 2006
    Publication date: November 29, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong-Ho SON, Fusayuki TAKESHITA, Jae-Jin LYU, Yong-Kuk YUN, Hyun-Wuk KIM, Jang-Hyun KIM, Min-Goo SEOK
  • Publication number: 20070229733
    Abstract: A display panel includes a pair of substrates separated by a liquid crystal layer, a polarization layer formed on one of the substrates, a color filter formed on the polarization layer, and a common electrode formed on the color filter wherein, the polarization layer substitutes for the conventional black matrix so that when the substrates are sealed together ultraviolet rays used to harden the sealant are not blocked by the black matrix.
    Type: Application
    Filed: April 3, 2007
    Publication date: October 4, 2007
    Inventors: Duck-Jong SUH, Nam-Seok Lee, Jeong-Uk Heo, Kyong-Ok Park, Baek-Kyun Jeon, Yong-Kuk Yun
  • Publication number: 20070146563
    Abstract: a liquid crystal display includes a pixel having a first region and a second region, wherein the pixel comprises a pixel electrode, a comon electrode facing the pixel electrode, and an alignment layer formed on at least one of the pixel electrode and the common electrode, wherein the alignment layer has different thicknesses in a first region and a second region, and a voltage ratio of the second region to the first region is about 0.1 to 0.95.
    Type: Application
    Filed: December 14, 2006
    Publication date: June 28, 2007
    Inventors: Yong-Kuk YUN, Baek-Kyun Jeon, Yong-Hwan Shin, Duck-Jong Suh
  • Publication number: 20070092743
    Abstract: A liquid crystal display includes a first panel and a second panel, an alignment layer formed on at least one of the first panel and the second panel, and a liquid crystal layer interposed between the first display panel and the second display panel and comprising liquid crystal molecules. The alignment layer includes a polymer comprising a polyamic acid having having a plurality of amic acid groups and a polyimide having a plurality of imide groups. The polymer has an imidization ratio of at least about 85%.
    Type: Application
    Filed: September 26, 2006
    Publication date: April 26, 2007
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Yong-Kuk Yun, Soon-Joon Rho, Yong-Hwan Shin
  • Publication number: 20070033897
    Abstract: An apparatus for arranging a spacer includes a substrate, a roller, and an adhesion unit. The substrate includes a recessed portion. A spacer, which maintains a cell gap of a display panel and has an adhesive member formed thereon, is received in the recessed portion. The roller corresponds to the spacer. The roller makes contact with an exposed portion of the adhesive member. The adhesion unit provides for an adhesive strength between the exposed portion of the adhesive member and the roller that exceeds an adhesive strength between the received portion of the adhesive member and the recessed portion of the substrate so that the spacer may be printed on the roller. Therefore, a cell gap uniformity of a display device may be improved.
    Type: Application
    Filed: July 11, 2006
    Publication date: February 15, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Duck-Jong SUH, Yong-Kuk YUN, Baek-Kyun JEON
  • Publication number: 20070019027
    Abstract: An apparatus for aligning an inkjet head includes an alignment plate disposed at a side of a printing die, and a confirmation apparatus that is spaced apart from the alignment plate by a predetermined distance.
    Type: Application
    Filed: July 19, 2006
    Publication date: January 25, 2007
    Applicant: Samsung Electronics Co., LTD.
    Inventors: Jin-Soo Jung, Baek-Kyun Jeon, Yong-Hwan Shin, Jong-Sung Bae, Yong-Kuk Yun, Duck-Jong Suh
  • Publication number: 20070018926
    Abstract: A display device is provided, which includes a first panel having a transparent electrode, and a second panel facing the first panel and having a plurality of first display signal lines, a plurality of second display signal lines intersecting the first display signal lines, a plurality of switching elements connected to one of the first display signal lines and one of the second display signal lines, a plurality of pixel electrodes connected to the switching elements, and a voltage wire being separate from the first and second display signal lines, the switching elements, and the pixel electrodes and that is supplied with a voltage from an external device; and the second panel further has a plurality of voltage input lines extending from the voltage wire and an input portion for receiving the voltage from the external device, respectively, and a plurality of shorting portions respectively electrically contacted at the voltage input lines and electrically connected to the transparent electrode of the first pan
    Type: Application
    Filed: May 24, 2006
    Publication date: January 25, 2007
    Inventors: Yong-Hwan Shin, Jeong-Uk Heo, Baek-Kyun Jeon, Yong-Kuk Yun
  • Publication number: 20070013846
    Abstract: A liquid crystal display, a method for manufacturing the same, and an apparatus for manufacturing the same are provided. A method includes forming a field-generating electrode on a panel, and forming an inorganic alignment layer on the substrate by using atmospheric pressure plasma. The process using the atmospheric pressure plasma to form the inorganic alignment layer is more simplified by omitting the etch steps of the short point area and the pad areas. Also, alignment layers may be formed on the mother glass with various shapes by using one apparatus.
    Type: Application
    Filed: July 12, 2006
    Publication date: January 18, 2007
    Inventors: Soon-Joon Rho, Duck-Jong Suh, Yong-Kuk Yun, Baek-Kyun Jeon
  • Publication number: 20060246215
    Abstract: A method of fabricating a liquid crystal display includes preparing a substrate having a matrix-type array of a plurality of stepped patterns having a predetermined pitch and forming a layer substantially covering the front surface of the substrate by ejecting a liquid material from an inkjet head portion onto the substrate in a state wherein a relative movement direction of the substrate to the inkjet head portion and one direction of the matrix-type array form an angle greater than 0 degrees and less than 90 degrees. An alignment layer formation apparatus used for the method is also provided.
    Type: Application
    Filed: April 26, 2006
    Publication date: November 2, 2006
    Inventors: Jin-soo Jung, Bong-woo Lee, Jong-sung Bae, Baek-kyun Jeon, Yong-kuk Yun
  • Publication number: 20060177604
    Abstract: The present invention relates to a nematic liquid crystal compound and a liquid crystal composition exhibiting a fast response time over a wide temperature range comprising the same, and more particularly, to a liquid crystal composition with fast response characteristics, and having a high phase transition temperature of liquid crystal, and having a low driving voltage and a nematic phase in a wide temperature range, comprising a nematic liquid crystal compound having an isothionate group and at least one fluorine atom in an aromatic ring of a terminal group.
    Type: Application
    Filed: April 7, 2006
    Publication date: August 10, 2006
    Inventors: Byeong-Seob Ban, Yong-Kuk Yun, Bong-Sung Seo, Bong-Hee Kim, Dong-Sik Sakong, Yong-Bai Kim
  • Publication number: 20060118763
    Abstract: The present invention relates to a high-speed high-temperature nematic liquid crystal composition and a liquid crystal display comprising the same, particularly to a high-speed high-temperature nematic liquid crystal composition which comprises a nematic liquid crystal compound having an isothionate group on the end aromatic ring and having one or more kinds of fluorine atoms, and thus satisfies a high response speed property and has a high phase transition temperature of liquid crystal, a low operating voltage, and a broad nematic phase temperature range, and a liquid crystal cell comprising the same, and a liquid crystal display using the same.
    Type: Application
    Filed: July 23, 2003
    Publication date: June 8, 2006
    Inventors: Yong-Kuk Yun, Bong-Hee Kim, Bong-sung Seo, Byeong-Seob Ban
  • Patent number: 7045176
    Abstract: The present invention relates to a liquid crystal composition having a high-speed response property and a liquid crystal display using the same, more particularly to a liquid crystal composition, wherein the liquid crystal has a high phase transition temperature, large birefringence index and modulus of elasticity, and a wide operable nematic temperature range, so that a high-speed response can be obtained to be useful for many liquid crystal devices including LCDs, and a liquid crystal display using the same.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: May 16, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-Kuk Yun, Bong-Hee Kim, Bong-Sung Seo, Byeong-Seob Ban
  • Publication number: 20050087127
    Abstract: An apparatus for forming an organic layer on a substrate includes a spraying device, the spraying device including a plurality of head units each formed in a corresponding row. Each head unit is shifted a horizontal distance from a previous head unit.
    Type: Application
    Filed: February 13, 2004
    Publication date: April 28, 2005
    Inventors: Yong-Kuk Yun, Baek-Kyun Jeon, Dae-Ho Choo
  • Publication number: 20050062018
    Abstract: The present invention relates to a nematic liquid crystal compound and a liquid crystal composition exhibiting a fast response time over a wide temperature range comprising the same, and more particularly, to a liquid crystal composition with fast response characteristics, and having a high phase transition temperature of liquid crystal, and having a low driving voltage and a nematic phase in a wide temperature range, comprising a nematic liquid crystal compound having an isothionate group and at least one fluorine atom in an aromatic ring of a terminal group.
    Type: Application
    Filed: April 25, 2002
    Publication date: March 24, 2005
    Inventors: Byeong-Seob Ban, Yong-Kuk Yun, Bong-Sung Seo, Bong-Hee Kim, Dong-Sik Sakong, Yong-Bai Kim
  • Publication number: 20040119051
    Abstract: The present invention relates to a liquid crystal composition having a high-speed response property and a liquid crystal display using the same, more particularly to a liquid crystal composition, wherein the liquid crystal has a high phase transition temperature, large birefringence index and modulus of elasticity, and a wide operable nematic temperature range, so that a high-speed response can be obtained to be useful for many liquid crystal devices including LCDs, and a liquid crystal display using the same.
    Type: Application
    Filed: November 26, 2003
    Publication date: June 24, 2004
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Yong-Kuk Yun, Bong-Hee Kim, Bong-Sung Seo, Byeong-Seob Ban