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: 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
  • Patent number: 9158050
    Abstract: The present disclosure provides a polarizer having a transmittance of about 45% or more and a transmittance distribution of about 0.3% or less.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: October 13, 2015
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Wan Taek Hong, Sang Do Lee, Hae Ryong Chung
  • Patent number: 9081145
    Abstract: A polarizing plate includes a polarizer, a first protective film attached to one side of the polarizer, and a second protective film attached to another side of the polarizer. A ratio between coefficients of thermal expansion of the first and second protective films, measured in a transverse direction (TD) at a temperature from about 25° C. to about 120° C., ranges from about 0.5 to about 2. A ratio between coefficients of thermal expansion of the first and second protective films measured in a machine direction (MD) at a temperature from about 25° C. to about 120° C. ranges from about 0.5 to about 2.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: July 14, 2015
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Eun Su Park, Kwang Ho Shin, Dong Yoon Shin, Eun Kyeong Seo, Hae Ryong Chung
  • Publication number: 20150168779
    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: Application
    Filed: December 4, 2014
    Publication date: June 18, 2015
    Inventors: Do Won Kim, Hae Ryong Chung
  • Patent number: 8994899
    Abstract: A polarizing plate includes a polarizer, a thin film on the polarizer, the thin film having an in-plane phase difference (Ro) of about 500 nm to about 3000 nm, and a coating layer disposed on one side of the thin film and having a haze value of about 15% to about 35%.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: March 31, 2015
    Assignee: Cheil Industries, Inc.
    Inventors: So-Hee Yu, Tae-Hwan Kwon, Jae-Bin Song, Hae-Ryong Chung
  • Patent number: 8932688
    Abstract: A polarizing plate includes a polarizer; and a protective film attached to at least one side of the polarizer via an adhesive layer. The adhesive layer is formed of a water-based adhesive including a polyvinyl alcohol resin, a zirconium compound, and an imine crosslinking agent. The polarizing plate has a variation in light transmittance (|B?A|) from 0% to about 0.25% at wavelengths from 400 nm to 780 nm, where A is an average value of initial light transmittance of the polarizing plate at wavelengths from 400 nm to 780 nm, and B is an average value of light transmittance of the polarizing plate at wavelengths from 400 nm to 780 nm measured after the polarizing plate has been dipped in water of 25° C. for 3 hours, followed by drying at 25° C. for 2 hours.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: January 13, 2015
    Assignee: Cheil Industries, Inc.
    Inventors: Eun Kyeong Seo, Dong Yoon Shin, Ae Kyoung Kim, A Ra Jo, So Hee Yu, Il Woong Baek, Min Jung Kim, Hae Ryong Chung
  • Patent number: 8877883
    Abstract: A polarizing plate and an optical member, the polarizing plate including an adhesive layer, the adhesive layer being prepared from an adhesive composition including a (meth)acrylic copolymer, a crosslinking agent, and a tackifier, the tackifier including an acrylic modified petroleum resin represented by Formula 1: R?—CO—O—R??[Formula 1] wherein R? is a petroleum resin and R is a C1-C20 alkyl group or a C6-C50 aryl group.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: November 4, 2014
    Assignee: Cheil Industries, Inc.
    Inventors: Won Kim, Yi Eun Kim, Chul Jeong, Ri Ra Jung, Hae Ryong Chung
  • Publication number: 20140293197
    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: Application
    Filed: March 26, 2014
    Publication date: October 2, 2014
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Kwang Ho Shin, Eun Su Park, Dong Yoon Shin, Hae Ryong Chung
  • Patent number: 8773619
    Abstract: A liquid crystal display includes a liquid crystal panel, a first polarizer plate stacked on an upper surface of the liquid crystal panel, and a second polarizer plate stacked on a lower surface of the liquid crystal panel. The first polarizer plate may have an absorption axis inclination of +0.1 to +0.2 degrees, or the second polarizer plate may have an absorption axis inclination of ?0.04 to less than 0 or greater than 0 to +0.1 degrees.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: July 8, 2014
    Assignee: Cheil Industries, Inc.
    Inventors: Chang Seok Bae, Ae Kyoung Kim, Hae Ryong Chung, Han Su Kim, Eun Jae Cho
  • Publication number: 20140178706
    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: Application
    Filed: December 19, 2013
    Publication date: June 26, 2014
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Eun Su Park, Dong Yoon Shin, Pil Joo Kim, Kwang Ho Shin, Hae Ryong Chung
  • Publication number: 20140168579
    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: Application
    Filed: December 16, 2013
    Publication date: June 19, 2014
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Ae Kyoung Kim, Han Saem Kang, Han Su Kim, Dong Yoon Shin, A Ra Jo, Hae Ryong Chung
  • Publication number: 20140168767
    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: Application
    Filed: December 16, 2013
    Publication date: June 19, 2014
    Applicant: CHEIL INDUSTRIES INC.
    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
  • Publication number: 20130286330
    Abstract: An optical film and a liquid crystal display including the same, the optical film including a first compensation layer having a relation of n1z>n1x>n1y between indexes of refraction n1x, n1y, and n1z in x-axis, y-axis, and z-axis directions on a plane; and a second compensation layer having a relation of n2x>n2y>n2z between indexes of refraction n2x, n2y, and n2z in x-axis, y-axis, and z-axis directions on a plane.
    Type: Application
    Filed: June 29, 2013
    Publication date: October 31, 2013
    Inventors: Moon-Yeon LEE, Hyeon CHO, Hyun-Gi KIM, Hae-Ryong CHUNG, Jong-Gyu LA
  • Publication number: 20130170033
    Abstract: A polarizing plate includes a polarizer, a first protective film attached to one side of the polarizer, and a second protective film attached to another side of the polarizer. A ratio between coefficients of thermal expansion of the first and second protective films, measured in a transverse direction (TD) at a temperature from about 25° C. to about 120° C., ranges from about 0.5 to about 2. A ratio between coefficients of thermal expansion of the first and second protective films measured in a machine direction (MD) at a temperature from about 25° C. to about 120° C. ranges from about 0.5 to about 2.
    Type: Application
    Filed: December 13, 2012
    Publication date: July 4, 2013
    Inventors: Eun Su PARK, Kwang Ho SHIN, Dong Yoon SHIN, Eun Kyeong SEO, Hae Ryong CHUNG
  • Publication number: 20130165561
    Abstract: A polarizing plate and an optical member, the polarizing plate including an adhesive layer, the adhesive layer being prepared from an adhesive composition including a (meth)acrylic copolymer, a crosslinking agent, and a tackifier, the tackifier including an acrylic modified petroleum resin represented by Formula 1: R?—CO—O—R??[Formula 1] wherein R? is a petroleum resin and R is a C1-C20 alkyl group or a C6-C50 aryl group.
    Type: Application
    Filed: December 27, 2012
    Publication date: June 27, 2013
    Inventors: Won KIM, Yi Eun KIM, Chul JEONG, Ri Ra JUNG, Hae Ryong CHUNG
  • Publication number: 20130162935
    Abstract: A polarizing plate includes a polarizer; and a protective film attached to at least one side of the polarizer via an adhesive layer. The adhesive layer is formed of a water-based adhesive including a polyvinyl alcohol resin, a zirconium compound, and an imine crosslinking agent. The polarizing plate has a variation in light transmittance (|B-A|) from 0% to about 0.25% at wavelengths from 400 nm to 780 nm, where A is an average value of initial light transmittance of the polarizing plate at wavelengths from 400 nm to 780 nm, and B is an average value of light transmittance of the polarizing plate at wavelengths from 400 nm to 780 nm measured after the polarizing plate has been dipped in water of 25° C. for 3 hours, followed by drying at 25° C. for 2 hours.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 27, 2013
    Inventors: Eun Kyeong Seo, Dong Yoon Shin, Ae Kyoung Kim, A. Ra Jo, So Hee Yu, Il Woong Baek, Min Jung Kim, Hae Ryong Chung
  • Publication number: 20130163079
    Abstract: The present disclosure provides a polarizer having a transmittance of about 45% or more and a transmittance distribution of about 0.3% or less.
    Type: Application
    Filed: December 21, 2012
    Publication date: June 27, 2013
    Inventors: Wan Taek HONG, Sang Do LEE, Hae Ryong CHUNG
  • Publication number: 20130162930
    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: Application
    Filed: December 17, 2012
    Publication date: June 27, 2013
    Inventors: Kwang Ho SHIN, Dong Yoon SHIN, Eun Su PARK, Hae Ryong CHUNG, Eun Kyeong SEO
  • Publication number: 20130165597
    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: Application
    Filed: September 13, 2012
    Publication date: June 27, 2013
    Inventors: Yi Eun KIM, Woo Jin JEONG, Hae Ryong CHUNG
  • Publication number: 20130141787
    Abstract: A polarizer includes boric acid and potassium iodide. A ratio of weight percent of the boric acid to weight percent of the potassium iodide is within a range of about 5 to about 10 in the polarizer.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 6, 2013
    Inventors: Pil Joo KIM, Jae Bin SONG, Hae Ryong CHUNG