Patents by Inventor Hae Ryong Chung

Hae Ryong Chung 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: 10539717
    Abstract: A polarizing plate comprises a polarizer; and at least one optical film on at least one side of the polarizer, wherein the optical film comprises a polyester film, the polyester film has a shrinkage difference between a length shrinkage in a first diagonal direction and a length shrinkage in a second diagonal direction of ?0.1% to +0.1% with respect to either the mechanical direction (MD) or the transverse direction (TD) of the polyester film (as a reference direction). An optical display apparatus includes the polarizing plate.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: January 21, 2020
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Eun Su Park, Dong Yoon Shin, Pil Joo Kim, Kwang Ho Shin, Hae Ryong Chung
  • Publication number: 20190285789
    Abstract: The present invention relates to a polarizing plate including a polarizer and a polyester film formed on an upper side of the polarizer, wherein the polyester film has a maximum thermal shrink angle of about 10° or less, and any one of a refractive index of x-axis direction nx at a wavelength of 550 nm and a refractive index of y-axis direction ny at a wavelength of 550 nm of about 1.65 or more; a method of preparing the polarizing plate; and a liquid crystal display apparatus comprising the polarizing plate.
    Type: Application
    Filed: June 4, 2019
    Publication date: September 19, 2019
    Inventors: Kwang Ho Shin, Eun Su Park, Dong Yoon Shin, Hae Ryong Chung
  • Patent number: 10330841
    Abstract: The present invention relates to a polarizing plate including a polarizer and a polyester film formed on an upper side of the polarizer, wherein the polyester film has a maximum thermal shrink angle of about 10° or less, and any one of a refractive index of x-axis direction nx at a wavelength of 550 nm and a refractive index of y-axis direction ny at a wavelength of 550 nm of about 1.65 or more; a method of preparing the polarizing plate; and a liquid crystal display apparatus comprising the polarizing plate.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: June 25, 2019
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Kwang Ho Shin, Eun Su Park, Dong Yoon Shin, Hae Ryong Chung
  • Patent number: 10101512
    Abstract: A polarizing plate includes a polarizer and a polyester film formed on an upper side of the polarizer. The polyester film has a ratio of MD elongation to TD elongation of about 1:6 to about 1:30. An angle between the transmission axis of the polarizer and the TD of the polyester film ranges from about ?7° to about +7°. In some embodiments, a liquid crystal display includes the polarizing plate. The polarizing plate and the liquid crystal display can reduce the occurrence of rainbow spots, realize a high degree of polarization, and exhibit little variation in the retardation and dimensions under high temperature/high humidity conditions.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: October 16, 2018
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Kwang Ho Shin, Dong Yoon Shin, Yeon Ju Jung, Hae Ryong Chung
  • Patent number: 9995863
    Abstract: A polarizing plate includes a polarizer, and a polyester film formed on one or both surfaces of the polarizer. The polyester film has a tensile strength ratio of about 3 or greater, as calculated by Equation 4, and an orientation displacement (°) of about ?5° to about +5° with respect to a transverse direction (slow axis) of the polyester film at a wavelength of 550 nm. A liquid crystal display apparatus includes the polarizing plate Tensile strength ratio=TD tensile strength/MD tensile strength??Equation 4.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: June 12, 2018
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Kwang Ho Shin, Eun Su Park, Dong Yoon Shin, Hae Ryong Chung
  • Patent number: 9817167
    Abstract: A protective film for a polarizing plate includes a base film and a primer layer on one or both sides of the base film. The protective film has a transmittance of about 90% or greater at a wavelength of 550 nm, and a ratio of the refractive index (B) of the primer layer to the refractive index (A) of the base film of about 0.6 to about 1.0. The protective film exhibits good adhesiveness to the polarizer and improves the transmittance of the polarizing plate. A polarizing plate including the same, and a liquid crystal display including the same are also disclosed.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: November 14, 2017
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Kwang Ho Shin, Eun Su Park, Dong Yoon Shin, Hae Ryong Chung
  • Patent number: 9684105
    Abstract: A polarizing plate includes a polarizer and a polyester film formed on at least one surface of the polarizer. The polyester film includes a polyester base film and a primer layer formed on at least one surface of the polyester base film. The polyester film contains about 0.1 wt % to about 5 wt % of a UV absorbent. In addition, a liquid crystal display includes the polarizing plate. A method of fabricating a polarizing plate includes preparing a multilayer film containing about 0.1 wt % to about 5 wt % of a UV absorbent, stretching the multilayer film to about 2 to about 10 times its initial length in a transverse direction (TD) to prepare a polyester film, and attaching the polyester film to at least one surface of a polarizer. The multilayer film comprises a polyester base film and a primer layer on at least one surface of the polyester base film.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: June 20, 2017
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Kwang Ho Shin, Eun Su Park, Dong Yoon Shin, Hae Ryong Chung
  • Patent number: 9612378
    Abstract: A folder type polarizing film for OLEDs and a display device, the film including a polarizer; a transparent support attached to an upper surface of the polarizer, the transparent support being a cycloolefin polymer film; and a compensation film attached to a lower surface of the polarizer, the compensation film being a cycloolefin polymer having a phase difference of ?/4 relative to a polarization axis of the polarizer.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: April 4, 2017
    Assignee: Cheil Industries, Inc.
    Inventors: Seon Oh Hwang, Yong Woon Kim, Hae Ryong Chung
  • Patent number: 9575355
    Abstract: The module for a liquid crystal display includes a liquid crystal display panel, a first polarizer formed on an upper side of the liquid crystal display panel, and a second polarizer formed on a lower side of the liquid crystal display panel, wherein the first polarizer has a length in a machine direction, the second polarizer has a width in the machine direction, a shrinkage force of the second polarizer is greater than a shrinkage force of the first polarizer, and the length of a polarizer is greater than the width of a polarizer.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: February 21, 2017
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Do Won Kim, Hae Ryong Chung
  • Patent number: 9423542
    Abstract: A polarizer includes a polyvinyl alcohol-based resin film in which iodine is oriented by adsorption, wherein an iodine orientation ratio, represented by the following Equation I, is about 20% to about 30%, Iodine ? ? orientation ? ? ratio = R I R PVA , ( I ) RI being an average in-plane retardation value of iodine in infrared regions of 845.1 nm, 903.3 nm, 952.1 nm, 1000.0 nm, 1046.5 nm, and 1092.7 nm, and RPVA being an average in-plane retardation value of a polyvinyl alcohol-based resin in infrared regions of 845.1 nm, 903.3 nm, 952.1 nm, 1000.0 nm, 1046.5 nm, and 1092.7 nm.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: August 23, 2016
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Chang Seok Bae, Han Soo Park, In Seok Oh, Hae Ryong Chung
  • Publication number: 20160209568
    Abstract: The present invention relates to a polarizing plate including a polarizer and a polyester film formed on an upper side of the polarizer, wherein the polyester film has a maximum thermal shrink angle of about 10° or less, and any one of a refractive index of x-axis direction nx at a wavelength of 550 nm and a refractive index of y-axis direction ny at a wavelength of 550 nm of about 1.65 or more; a method of preparing the polarizing plate; and a liquid crystal display apparatus comprising the polarizing plate.
    Type: Application
    Filed: August 12, 2014
    Publication date: July 21, 2016
    Inventors: Kwang Ho Shin, Eun Su Park, Dong Yoon Shin, Hae Ryong Chung
  • Patent number: 9383494
    Abstract: A polarizing plate includes a polarizer and at least one protective film on at least one side of the polarizer. The protective film has an in-plane retardation (Re) of greater than about 10,000 nm at a wavelength of 550 nm, as calculated by Re=(nx?ny)×d, wherein nx and ny are indexes of refraction in x-axis and y-axis directions of the protective film, respectively, and d is a thickness of the protective film.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: July 5, 2016
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Kwang Ho Shin, Dong Yoon Shin, Eun Su Park, Hae Ryong Chung, Eun Kyeong Seo
  • Patent number: 9358768
    Abstract: A polarizing plate, a method of preparing the same and a liquid crystal display apparatus including the same are disclosed. The polarizing plate includes a polarizer and a polyester film formed on a surface of the polarizer, wherein the polyester film has a ratio of an elongation ratio in a machine direction to an elongation ratio in a transverse direction of about 1:0.8 to about 1:1.2, an in-plane retardation (Re) of about 500 nm or less at a wavelength of 550 nm, and an out-of-plane retardation (Rth) of about 10,000 nm or less at a wavelength of 550 nm.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: June 7, 2016
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Kwang Ho Shin, Eun Su Park, Dong Yoon Shin, Jong Hyuk Eun, Hae Ryong Chung, Ae Kyoung Kim, Han Saem Kang, Han Su Kim, A Ra Jo
  • Patent number: 9291850
    Abstract: A polarizing plate includes a polarizer, a retardation film on a first side (e.g., a lower side) of the polarizer, and a protective film on a second side (e.g., an upper side) of the polarizer. The retardation film has an axis distortion angle between a fast axis of the retardation film and an absorption axis of the polarizer of about +0.03° to less than +0.2°. The protective film has an in-plane phase difference (Ro) of greater than about 10,000 nm and about 15,000 nm or less at a wavelength of 550 nm. A liquid crystal display apparatus includes the polarizing plate.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: March 22, 2016
    Assignee: CHEIL INDUSTRIES INC.
    Inventors: Ae Kyoung Kim, Han Saem Kang, Han Su Kim, Dong Yoon Shin, A Ra Jo, Hae Ryong Chung
  • Publication number: 20160062011
    Abstract: A polarizing plate includes a polarizer and a polyester film formed on an upper side of the polarizer. The polyester film has a ratio of MD elongation to TD elongation of about 1:6 to about 1:30. An angle between the transmission axis of the polarizer and the TD of the polyester film ranges from about ?7° to about +7°. In some embodiments, a liquid crystal display includes the polarizing plate. The polarizing plate and the liquid crystal display can reduce the occurrence of rainbow spots, realize a high degree of polarization, and exhibit little variation in the retardation and dimensions under high temperature/high humidity conditions.
    Type: Application
    Filed: August 27, 2015
    Publication date: March 3, 2016
    Inventors: Kwang Ho Shin, Dong Yoon Shin, Yeon Ju Jung, Hae Ryong Chung
  • Publication number: 20160062012
    Abstract: A polarizing plate includes a polarizer, and a polyester film formed on one or both surfaces of the polarizer. The polyester film has a tensile strength ratio of about 3 or greater, as calculated by Equation 4, and an orientation displacement (°) of about ?5° to about +5° with respect to a transverse direction (slow axis) of the polyester film at a wavelength of 550 nm. A liquid crystal display apparatus includes the polarizing plate. Tensile strength ratio=TD tensile strength/MD tensile strength.
    Type: Application
    Filed: September 1, 2015
    Publication date: March 3, 2016
    Inventors: Kwang Ho Shin, Eun Su Park, Dong Yoon Shin, Hae Ryong Chung
  • Patent number: 9250370
    Abstract: An adhesive composition for a polarizer plate, the adhesive composition including a (meth)acrylic copolymer and a polyisocyanate curing agent containing an isocyanurate structure.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: February 2, 2016
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Yi Eun Kim, Woo Jin Jeong, Hae Ryong Chung
  • Patent number: 9243168
    Abstract: An adhesive composition and an optical member using the same, the adhesive composition including about 100 parts by weight of a (meth)acrylate copolymer including repeating units derived from a C1-20 alkyl(meth)acrylate monomer, an aromatic group-containing monomer, and a carboxyl group-containing monomer; about 0.01 to about 10 parts by weight of a crosslinking agent; about 0.01 to about 5 parts by weight of a silane coupling agent; and about 0.01 to about 5 parts by weight of a crosslinking catalyst.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: January 26, 2016
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Woo Jin Jeong, Hee Yeon Ki, Hae Ryong Chung
  • Publication number: 20160018564
    Abstract: A polarizing plate includes a polarizer and a polyester film formed on at least one surface of the polarizer. The polyester film includes a polyester base film and a primer layer formed on at least one surface of the polyester base film. The polyester film contains about 0.1 wt % to about 5 wt % of a UV absorbent. In addition, a liquid crystal display includes the polarizing plate. A method of fabricating a polarizing plate includes preparing a multilayer film containing about 0.1 wt % to about 5 wt % of a UV absorbent, stretching the multilayer film to about 2 to about 10 times its initial length in a transverse direction (TD) to prepare a polyester film, and attaching the polyester film to at least one surface of a polarizer. The multilayer film comprises a polyester base film and a primer layer on at least one surface of the polyester base film.
    Type: Application
    Filed: July 20, 2015
    Publication date: January 21, 2016
    Inventors: Kwang Ho Shin, Eun Su Park, Dong Yoon Shin, Hae Ryong Chung
  • Patent number: 9187672
    Abstract: A hard coating film may include a cured product of a polyester polyol modified hyperbranched (meth)acrylate represented by Formula 1:
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: November 17, 2015
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Sang Shin Kim, Dong Yoon Shin, Hae Ryong Chung