Patents by Inventor So-Hee YU

So-Hee YU 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: 11002886
    Abstract: Provided are a polarizer protection film, a polarizing plate comprising the same, and a liquid crystal display device comprising the polarizing plate. The polarizer protection film has: a moisture permeability ranging from approximately 0 g/m2/24 hr to approximately 100 g/m2/24 hr; a value for a MD-direction shrinkage rate/a TD-direction shrinkage rate, ranging from 0.8 to 1.3; an in-plane phase difference (Re) ranging from approximately 0 nm to approximately 350 nm; a thickness-direction phase difference (Rth) ranging from approximately 2500 nm to approximately 8000 nm; and a thickness of approximately 10 ?m to approximately 60 ?m.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: May 11, 2021
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Ran Kim, So Hee Yu, Seung Kyu Lee
  • Publication number: 20190154884
    Abstract: Provided are a polarizer protection film, a polarizing plate comprising the same, and a liquid crystal display device comprising the polarizing plate. The polarizer protection film has: a moisture permeability ranging from approximately 0 g/m2/24 hr to approximately 100 g/m2/24 hr; a value for a MD-direction shrinkage rate/a TD-direction shrinkage rate, ranging from 0.8 to 1.3; an in-plane phase difference (Re) ranging from approximately 0 nm to approximately 350 nm; a thickness-direction phase difference (Rth) ranging from approximately 2500 nm to approximately 8000 nm; and a thickness of approximately 10 ?m to approximately 60 ?m.
    Type: Application
    Filed: December 23, 2016
    Publication date: May 23, 2019
    Inventors: Ran KIM, So Hee YU, Seung Kyu LEE
  • Patent number: 10003048
    Abstract: An optical film, an organic light-emitting diode (OLED) display, and a method of fabricating an OLED display are provided. An optical film includes: a polarizer; and a protective film on at least one surface of the polarizer, and an in-plane retardation of the protective film is from 0 nm to 300 nm, and a reflectance of the optical film is from 0 to 5%.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: June 19, 2018
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Ran Kim, So Hee Yu, Seung Kyu Lee
  • Patent number: 9880420
    Abstract: Disclosed are an optical film, a method for preparing the same, and a liquid crystal display including the same. The optical film is a single film of a non-liquid crystalline thermoplastic resin, and includes: first and second surface part placed on both surfaces of the film in a thickness direction; and an inner part of the film placed between the first and second surface part, wherein the first and second surface part are not aligned with a tilt in the thickness direction, and the inner part of the film is aligned with a tilt in the thickness direction.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: January 30, 2018
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: So Hee Yu, Jin Hui Cho, Jong Kyu Choi, Ran Kim, Seung Kyu Lee, Jong Hyuk Eun
  • Patent number: 9880334
    Abstract: An optical film, a liquid crystal display including the same, and a method for manufacturing a protective film used therefor are provided. An optical film includes a polarizer and a protective film laminated or stacked on at least one surface of the polarizer, and a thickness-direction retardation (Re) of the protective film is in the range of 0 nm to 200 nm, and an out-of-plane retardation (Rth) of the protective film is in the range of 300 nm to 1,200 nm.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: January 30, 2018
    Assignee: Samsung SDI Co., Ltd.
    Inventors: So Hee Yu, Ran Kim, Seung Kyu Lee
  • Publication number: 20170108632
    Abstract: An optical film, a liquid crystal display including the same, and a method for manufacturing a protective film used therefor are provided. An optical film includes a polarizer and a protective film laminated or stacked on at least one surface of the polarizer, and a thickness-direction retardation (Re) of the protective film is in the range of 0 nm to 200 nm, and an out-of-plane retardation (Rth) of the protective film is in the range of 300 nm to 1,200 nm.
    Type: Application
    Filed: December 15, 2014
    Publication date: April 20, 2017
    Inventors: So Hee Yu, Ran Kim, Seung Kyu Lee
  • Publication number: 20160308170
    Abstract: An optical film, an organic light-emitting diode (OLED) display, and a method of fabricating an OLED display are provided. An optical film includes: a polarizer; and a protective film on at least one surface of the polarizer, and an in-plane retardation of the protective film is from 0 nm to 300 nm, and a reflectance of the optical film is from 0 to 5%.
    Type: Application
    Filed: April 11, 2016
    Publication date: October 20, 2016
    Inventors: Ran KIM, So Hee YU, Seung Kyu LEE
  • Publication number: 20150185559
    Abstract: Disclosed are an optical film, a method for preparing the same, and a liquid crystal display including the same. The optical film is a single film of a non-liquid crystalline thermoplastic resin, and includes: first and second surface part placed on both surfaces of the film in a thickness direction; and an inner part of the film placed between the first and second surface part, wherein the first and second surface part are not aligned with a tilt in the thickness direction, and the inner part of the film is aligned with a tilt in the thickness direction.
    Type: Application
    Filed: July 3, 2013
    Publication date: July 2, 2015
    Inventors: So Hee Yu, Jin Hui Cho, Jong Kyu Choi, Ran Kim, Seung Kyu Lee, Jong Hyuk Eun
  • 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
  • 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: 20120113356
    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: Application
    Filed: January 19, 2012
    Publication date: May 10, 2012
    Inventors: So-Hee YU, Tae-Hwan Kwon, Jae-Bin Song, Hae-Ryong Chung