Patents by Inventor Sae-Han Cho

Sae-Han Cho 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: 9733511
    Abstract: Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as water resistance, workability, durability, and light leakage preventing ability. In addition, the polarizing plate prevents curling occurring at the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: August 15, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Eun Soo Huh, Ki Ok Kwon, In Ho Hwang, Kyun Il Rah, Min Ki Lee, Sae Han Cho
  • Patent number: 9703138
    Abstract: Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as water resistance, workability, durability, and light leakage preventing ability. In addition, the polarizing plate prevents curling occurring at the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: July 11, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Eun Soo Huh, Ki Ok Kwon, In Ho Hwang, Kyun Il Rah, Min Ki Lee, Sae Han Cho
  • Patent number: 9256005
    Abstract: Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as durability, water resistance, workability, and light leakage preventing ability. In addition, the polarizing plate prevents curling occurring in the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: February 9, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Eun Soo Huh, Ki Ok Kwon, In Kyu Park, Sung Soo Yoon, Min Ki Lee, Sae Han Cho
  • Patent number: 9250358
    Abstract: Provided are an adhesive for a polarizing plate and a polarizing plate comprising the same, and more particularly, an adhesive composition for a polarizing plate comprising one or more acrylic monomers having a hydrophilic group, a radical polymerization initiator, an epoxy resin, and a cationic photopolymerization initiator, as well as a polarizing plate comprising a polarizer, a polymer film adhered to one side or both sides of the polarizer, and an adhesive layer for bonding the polarizer and the polymer film, in which the adhesive layer is formed of an adhesive composition comprising one or more acrylic monomers having a hydrophilic group, a radical polymerization initiator, an epoxy resin, and a cationic photopolymerization initiator.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: February 2, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Sae-Han Cho, Eun-Mi Seo, Boong-Goon Jeong, Kyun-Il Rah, Nam-Jeong Lee
  • Publication number: 20140302328
    Abstract: Provided are an adhesive for a polarizing plate and a polarizing plate comprising the same, and more particularly, an adhesive composition for a polarizing plate comprising one or more acrylic monomers having a hydrophilic group, a radical polymerization initiator, an epoxy resin, and a cationic photopolymerization initiator, as well as a polarizing plate comprising a polarizer, a polymer film adhered to one side or both sides of the polarizer, and an adhesive layer for bonding the polarizer and the polymer film, in which the adhesive layer is formed of an adhesive composition comprising one or more acrylic monomers having a hydrophilic group, a radical polymerization initiator, an epoxy resin, and a cationic photopolymerization initiator.
    Type: Application
    Filed: June 23, 2014
    Publication date: October 9, 2014
    Inventors: Sae-Han CHO, Eun-Mi SEO, Boong-Goon JEONG, Kyun-Il RAH, Nam-Jeong LEE
  • Publication number: 20140240647
    Abstract: Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as durability, water resistance, workability, and light leakage preventing ability. In addition, the polarizing plate prevents curling occurring in the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance.
    Type: Application
    Filed: February 25, 2014
    Publication date: August 28, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Eun Soo HUH, Ki Ok KWON, In Kyu PARK, Sung Soo YOON, Min Ki LEE, Sae Han CHO
  • Publication number: 20140204317
    Abstract: Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as water resistance, workability, durability, and light leakage preventing ability. In addition, the polarizing plate prevents curling occurring at the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance.
    Type: Application
    Filed: March 19, 2014
    Publication date: July 24, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Eun Soo Huh, Ki Ok Kwon, In Ho Hwang, Kyun Il Rah, Min Ki Lee, Sae Han Cho
  • Publication number: 20140168580
    Abstract: Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as durability, water resistance, workability, and light leakage preventing ability. In addition, the polarizing plate prevents curling occurring in the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance.
    Type: Application
    Filed: February 18, 2014
    Publication date: June 19, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Eun Soo HUH, Ki Ok KWON, In Kyu PARK, Sung Soo YOON, Min Ki LEE, Sae Han CHO
  • Publication number: 20140160405
    Abstract: Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as water resistance, workability, durability, and light leakage preventing ability. In addition, the polarizing plate prevents curling occurring at the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance.
    Type: Application
    Filed: February 14, 2014
    Publication date: June 12, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Eun Soo Huh, Ki Ok Kwon, In Ho Hwang, Kyun II Rah, Min Ki Lee, Sae Han Cho
  • Patent number: 8613986
    Abstract: The present invention relates to an optical film comprising an aromatic based unit including 5 to 10,000 of units represented by Formula 6; a (meth)acrylate-based unit which is a copolymer of a (meth)acrylate derivative and maleimide; and a styrene-based unit which is a copolymer of a styrene derivative and maleimide, and a polarizing plate.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: December 24, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Jun-Geun Um, Min-Hee Lee, Nam-Jeong Lee, Jong-Hun Lee, Dong-Ryul Kim, Sae-Han Cho
  • Publication number: 20130244041
    Abstract: Provided are an adhesive for a polarizing plate and a polarizing plate comprising the same, and more particularly, an adhesive composition for a polarizing plate comprising one or more acrylic monomers having a hydrophilic group, a radical polymerization initiator, an epoxy resin, and a cationic photopolymerization initiator, as well as a polarizing plate comprising a polarizer, a polymer film adhered to one side or both sides of the polarizer, and an adhesive layer for bonding the polarizer and the polymer film, in which the adhesive layer is formed of an adhesive composition comprising one or more acrylic monomers having a hydrophilic group, a radical polymerization initiator, an epoxy resin, and a cationic photopolymerization initiator.
    Type: Application
    Filed: September 20, 2011
    Publication date: September 19, 2013
    Applicant: LG CHEM. LTD.
    Inventors: Sae-Han Cho, Eun-Mi Seo, Boong-Goon Jeong, Kyun-Il Rah, Nam-Jeong Lee
  • Publication number: 20130235456
    Abstract: The present invention relates to an optical film comprising an aromatic based unit including 5 to 10,000 of units represented by Formula 6; a (meth)acrylate-based unit which is a copolymer of a (meth)acrylate derivative and maleimide; and a styrene-based unit which is a copolymer of a styrene derivative and maleimide, and a polarizing plate.
    Type: Application
    Filed: September 5, 2012
    Publication date: September 12, 2013
    Applicant: LG CHEM, LTD.
    Inventors: Jun-Geun Um, Min-Hee Lee, Nam-Jeong Lee, Jong-Hun Lee, Dong-Ryul Kim, Sae-Han Cho
  • Patent number: 8344083
    Abstract: The present invention relates to a transparent resin composition which comprises (a) a (meth)acrylate based unit comprising one or more (meth)acrylate based derivatives; (b) an aromatic based unit having a chain having the hydroxy group containing portion and an aromatic moiety and (c) a styrene-based unit comprising one or more styrene-based derivatives, and an optical film that is formed by using the same.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: January 1, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Jun-Geun Um, Min-Hee Lee, Nam-Jeong Lee, Jong-Hun Lee, Dong-Ryul Kim, Sae-Han Cho
  • Patent number: 8243239
    Abstract: The present invention relates to an in-plane switching (IPS) mode liquid crystal display. More particularly, the IPS mode liquid crystal display according to the present invention comprises 1) a first polarizing plate; 2) a liquid crystal cell; 3) a retardation film comprising a positive biaxial acryl-based film and a negative C plate; and 4) a second polarizing plate. Accordingly, a contrast property can be improved at a front side of the IPS mode liquid crystal display and at an inclining angle.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: August 14, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Jeong-Min Choi, Min-Hee Lee, Sae-Han Cho
  • Patent number: 7875328
    Abstract: The present invention relates to an optical film comprising an aromatic based unit having chain having the hydroxy group containing portion and aromatic moiety; and a styrene-based unit comprising one or more styrene-based derivatives, and has absolute values of in-plane retardation (Rin) and thickness retardation (Rin) of 10 nm or less regardless of stretching, and a polarizing plate and an information technology apparatus including the same.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: January 25, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Jun-Geun Um, Min-Hee Lee, Nam-Jeong Lee, Jong-Hun Lee, Dong-Ryul Kim, Sae-Han Cho
  • Publication number: 20100311910
    Abstract: The present invention relates to an optical film comprising an aromatic based unit having chain having the hydroxy group containing portion and aromatic moiety; and a styrene-based unit comprising one or more styrene-based derivatives, and has absolute values of in-plane retardation (Rin) and thickness retardation (Rth) of 10 nm or less regardless of stretching, and a polarizing plate and an information technology apparatus including the same.
    Type: Application
    Filed: August 17, 2010
    Publication date: December 9, 2010
    Applicant: LG CHEM, LTD.
    Inventors: Jun-Geun Um, Min-Hee Lee, Nam-Jeong Lee, Jong-Hun Lee, Dong-Ryul Kim, Sae-Han Cho
  • Publication number: 20100053508
    Abstract: The present invention relates to an in-plane switching (IPS) mode liquid crystal display. More particularly, the IPS mode liquid crystal display according to the present invention comprises 1) a first polarizing plate; 2) a liquid crystal cell; 3) a retardation film comprising a positive biaxial acryl-based film and a negative C plate; and 4) a second polarizing plate. Accordingly, a contrast property can be improved at a front side of the IPS mode liquid crystal display and at an inclining angle.
    Type: Application
    Filed: August 26, 2009
    Publication date: March 4, 2010
    Inventors: Jeong-Min Choi, Min-Hee Lee, Sae-Han Cho
  • Publication number: 20090275718
    Abstract: The present invention relates to a transparent resin composition which comprises (a) a (meth)acrylate based unit comprising one or more (meth)acrylate based derivatives; (b) an aromatic based unit having a chain having the hydroxy group containing portion and an aromatic moiety and (c) a styrene-based unit comprising one or more styrene-based derivatives, and an optical film that is formed by using the same.
    Type: Application
    Filed: May 4, 2009
    Publication date: November 5, 2009
    Applicant: LG Chem, Ltd.
    Inventors: Jun-Geun Um, Min-Hee Lee, Nam-Jeong Lee, Jong-Hun Lee, Dong-Ryul Kim, Sae-Han Cho
  • Publication number: 20090273838
    Abstract: The present invention relates to an optical film comprising an aromatic based unit having chain having the hydroxy group containing portion and aromatic moiety; and a styrene-based unit comprising one or more styrene-based derivatives, and has absolute values of in-plane retardation (Rin) and thickness retardation (Rin) of 10 nm or less regardless of stretching, and a polarizing plate and an information technology apparatus including the same.
    Type: Application
    Filed: May 4, 2009
    Publication date: November 5, 2009
    Applicant: LG Chem, Ltd.
    Inventors: Jun-Geun Um, Min-Hee Lee, Nam-Jeong Lee, Jong-Hun Lee, Dong-Ryul Kim, Sae-Han Cho