Patents by Inventor Ae Kyoung Kim

Ae Kyoung Kim 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: 9791734
    Abstract: An LCD module includes an LCD panel, and a polarizing plate formed on each of the upper and lower surfaces of the LCD panel. The polarizing plate includes a polarizer and a polyester film formed on at least one surface of the polarizer. The polyester film has a difference between the index of refraction in the x-axis direction and the index of refraction in the z-axis direction (nx?nz) of about 0.1 to about 0.18, where nx and nz are the indices of refraction in the x-axis and z-axis directions, respectively, at a wavelength of 550 nm. The LCD module has a CR 45° and a CR 135° of about 1.0% or greater.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: October 17, 2017
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Yeon Ju Jung, Ae Kyoung Kim, Han Su Kim, Kwang Ho Shin, Dong Yoon Shin
  • 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: 20160026022
    Abstract: An LCD module includes an LCD panel, and a polarizing plate formed on each of the upper and lower surfaces of the LCD panel. The polarizing plate includes a polarizer and a polyester film formed on at least one surface of the polarizer. The polyester film has a difference between the index of refraction in the x-axis direction and the index of refraction in the z-axis direction (nx?nz) of about 0.1 to about 0.18, where nx and nz are the indices of refraction in the x-axis and z-axis directions, respectively, at a wavelength of 550 nm. The LCD module has a CR 45° and a CR 135° of about 1.0% or greater.
    Type: Application
    Filed: July 10, 2015
    Publication date: January 28, 2016
    Inventors: Yeon Ju Jung, Ae Kyoung Kim, Han Su Kim, Kwang Ho Shin, Dong Yoon Shin
  • 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: 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: 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: 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: 20120154718
    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: Application
    Filed: December 20, 2011
    Publication date: June 21, 2012
    Inventors: Chang Seok Bae, Ae Kyoung Kim, Hae Ryong Chung, Han Su Kim, Eun Jae Cho