Patents by Inventor Do Heon LEE

Do Heon LEE 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: 11726244
    Abstract: A polarizing plate for light emitting displays and a light emitting display including the same are provided. A polarizing plate includes: a polarizer; and a first liquid crystal retardation film, a first bonding layer, and a second liquid crystal retardation film sequentially stacked on a surface of the polarizer, and the first bonding layer has a glass transition temperature of about 70° C. to about 100° C. and is formed of a composition including at least one selected from among an alicyclic group-containing glycidyl ether and an aromatic group-containing glycidyl ether.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: August 15, 2023
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Do Heon Lee, Seung Hoon Lee, Il Jin Kim
  • Patent number: 11667820
    Abstract: Provided are an adhesive composition for a polarizing plate, a polarizing plate, and an optical display device, the adhesive composition comprising an epoxy-based compound, a (meth)acrylate-based compound, a photo-acid generator, and an optical radical initiator, the (meth)acrylate-based compound comprising a mixture of a bifunctional (meth)acrylate-based compound and a monofunctional (meth)acrylate-based compound having a hydrophobic functional group, wherein the adhesive strength measured after the adhesive composition for a polarizing plate is separately applied to a PET film, a TAC film, and a COP film, to which a polarizer is then bound, followed by photo-curing, is about 200 gf/inch or more.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: June 6, 2023
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Seung Hoon Lee, Do Heon Lee, Mi Ran Seo, In Cheon Han
  • Patent number: 11187830
    Abstract: Provided are: a polarizing plate; a method for manufacturing the polarizing plate; and an optical display device comprising the same, the polarizing plate having an adhesive layer, a barrier layer, a polarizer, and a protective film, which are sequentially stacked, wherein the barrier layer is formed from a barrier layer composition containing an epoxy-based compound and an antimony sulfonium-based initiator.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: November 30, 2021
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Byung Joo Byun, Young Jong Kim, Do Heon Lee, In Cheon Han
  • Patent number: 11058740
    Abstract: The present disclosure relates to a composition for preventing, alleviating or treating stress diseases, containing a Platycodon grandiflorum extract as an active ingredient, and, more specifically, to a food composition for preventing or alleviating stress diseases or a pharmaceutical composition for preventing and treating stress diseases, both of which contain a Platycodon grandiflorum extract and a Citrus aurantium extract as active ingredients. A method of the present disclosure can be used for the preparation of an agent for treating depression and anxiety, which are stress diseases, with few side effects because of the use of a natural material, and a health functional food having effects of alleviating depression, anxiety and fatigue, which are stress diseases.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: July 13, 2021
    Assignee: SUNG KYUN BIOTECH CO., LTD.
    Inventors: Mi Rim Jin, Do Heon Lee, Sun Yeou Kim
  • Patent number: 10647898
    Abstract: Disclosed are an adhesive composition for polarizing plates, a polarizing plate using the same, a method for preparing the same, and an optical member including the same. The adhesive composition includes (A) a (meth)acrylic radical compound, (B) a cationic epoxy compound, (C) a phenoxy resin, and (D) a photoinitiator.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: May 12, 2020
    Assignee: Cheil Industries, Inc.
    Inventors: Mi Yeon Yu, Tae Hyun Lee, Do Heon Lee, Ik Hwan Cho, In Cheon Han
  • Publication number: 20200142116
    Abstract: A polarizing plate for light emitting displays and a light emitting display including the same are provided. A polarizing plate includes: a polarizer; and a first liquid crystal retardation film, a first bonding layer, and a second liquid crystal retardation film sequentially stacked on a surface of the polarizer, and the first bonding layer has a glass transition temperature of about 70° C. to about 100° C. and is formed of a composition including at least one selected from among an alicyclic group-containing glycidyl ether and an aromatic group-containing glycidyl ether.
    Type: Application
    Filed: November 5, 2019
    Publication date: May 7, 2020
    Inventors: Do Heon LEE, Seung Hoon LEE, Il Jin KIM
  • Publication number: 20200113962
    Abstract: The present disclosure relates to a composition for preventing, alleviating or treating stress diseases, containing a Platycodon grandiflorum extract as an active ingredient, and, more specifically, to a food composition for preventing or alleviating stress diseases or a pharmaceutical composition for preventing and treating stress diseases, both of which contain a Platycodon grandiflorum extract and a Citrus aurantium extract as active ingredients. A method of the present disclosure can be used for the preparation of an agent for treating depression and anxiety, which are stress diseases, with few side effects because of the use of a natural material, and a health functional food having effects of alleviating depression, anxiety and fatigue, which are stress diseases.
    Type: Application
    Filed: April 18, 2018
    Publication date: April 16, 2020
    Applicant: SUNG kyun BIOTECH CO.. LTD,
    Inventors: Mi Rim JIN, Do Heon LEE, Sun Yeou KIM
  • Publication number: 20200071577
    Abstract: Provided are an adhesive composition for a polarizing plate, a polarizing plate, and an optical display device, the adhesive composition comprising an epoxy-based compound, a (meth)acrylate-based compound, a photo-acid generator, and an optical radical initiator, the (meth)acrylate-based compound comprising a mixture of a bifunctional (meth)acrylate-based compound and a monofunctional (meth)acrylate-based compound having a hydrophobic functional group, wherein the adhesive strength measured after the adhesive composition for a polarizing plate is separately applied to a PET film, a TAC film, and a COP film, to which a polarizer is then bound, followed by photo-curing, is about 200 gf/inch or more.
    Type: Application
    Filed: September 11, 2017
    Publication date: March 5, 2020
    Inventors: Seung Hoon LEE, Do Heon LEE, Mi Ran SEO, In Cheon HAN
  • Patent number: 10527767
    Abstract: A composition for protective layers of a polarizing plate includes a photocurable monomer or oligomer having a glass transition temperature (Tg) of about 50° C. or greater, particles, a reactive monomer or oligomer, and an initiator. A polarizing plate includes a polarizer and a protective layer formed from the composition on one or both surfaces of the polarizer. The protective layer has a storage modulus at about 25° C. of greater than about 2000 MPa, as measured at a heating rate of 10° C./min, a temperature of ?50° C. to 100° C., a frequency of 1 Hz, and a strain of 0.5%. An optical display includes the polarizing plate.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: January 7, 2020
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Do Heon Lee, Mi Yeon Yu, Tae Hyun Lee, In Cheon Han
  • Publication number: 20190339421
    Abstract: Provided are: a polarizing plate; a method for manufacturing the polarizing plate; and an optical display device comprising the same, the polarizing plate having an adhesive layer, a barrier layer, a polarizer, and a protective film, which are sequentially stacked, wherein the barrier layer is formed from a barrier layer composition containing an epoxy-based compound and an antimony sulfonium-based initiator.
    Type: Application
    Filed: January 3, 2018
    Publication date: November 7, 2019
    Inventors: Byung Joo BYUN, Young Jong KIM, Do Heon LEE, In Cheon HAN
  • Patent number: 10241249
    Abstract: A polarizing plate includes a polarizer, a bonding layer on an upper surface of the polarizer, a protective film on an upper surface of the bonding layer and having a moisture transmittance of about 30 g/m2·24 hr or less at 40° C. and 90 % relative humidity (RH), and a barrier layer on a lower surface of the polarizer and formed of a barrier layer composition including an alicyclic epoxy resin having a glass transition temperature of about 200° C. or more. The polarizing plate may have a light transmittance variation rate of 3% or less, as calculated by Equation 1: Light transmittance variation rate=|T0?T500|/T0×100??(1), where T0 is an initial light transmittance and T500 is a light transmittance after 500 hours as set forth herein.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: March 26, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Do Heon Lee, Tae Hyun Lee, In Cheon Han
  • Publication number: 20190002745
    Abstract: Disclosed are an adhesive composition for polarizing plates, a polarizing plate using the same, a method for preparing the same, and an optical member including the same. The adhesive composition includes (A) a (meth)acrylic radical compound, (B) a cationic epoxy compound, (C) a phenoxy resin, and (D) a photoinitiator.
    Type: Application
    Filed: August 29, 2018
    Publication date: January 3, 2019
    Inventors: Mi Yeon Yu, Tae Hyun Lee, Do Heon Lee, Ik Hwan Cho, In Cheon Han
  • Patent number: 9606265
    Abstract: An adhesive composition for polarizing plates, a polarizing plate using the same, and an optical member including the same, the adhesive composition including an epoxy compound, a (meth)acrylic compound, and a polyfunctional thiol compound.
    Type: Grant
    Filed: June 29, 2013
    Date of Patent: March 28, 2017
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Tae Hyun Lee, Ik Hwan Cho, Mi Yeon Yu, Do Heon Lee, In Cheon Han
  • Patent number: 9434860
    Abstract: An adhesive composition for a polarizing plate, an adhesive film formed from the same, a polarizing plate including the same, and an optical display including the same are disclosed. The adhesive film for a polarizing plate is formed from an adhesive composition including an epoxy compound and a (meth)acrylate compound, and the adhesive film has an FT-IR peak ratio of about 0.015 or lower as defined by Equation 1. Equation 1 FT-IR peak ratio=B/A??(1) In Equation 1, A is the peak height of the peak attributable to the —(C?O)— bond at 1724 cm?1, and B is the peak height of the peak attributable to the —CH?CH— bond at 1636 cm?1.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: September 6, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Mi Yeon Yu, Yoo Jin Suh, Do Heon Lee, Seung Hoon Lee, Tae Hyun Lee, Ri Ra Jung, Woo Jin Jeong, In Cheon Han
  • Patent number: 9428676
    Abstract: An adhesive composition for polarizing plates includes an epoxy compound, a (meth)acrylic compound, an alkoxysilane compound including at least one epoxy group, and an alkoxysilane compound including at least one (meth)acrylate group. A polarizing plate using the adhesive composition can exhibit good adhesion, reliability, durability, water resistance, and high temperature/high humidity resistance. An optical apparatus includes the polarizing plate.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: August 30, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Tae Hyun Lee, Mi Yeon Yu, Do Heon Lee, In Cheon Han
  • Publication number: 20160238771
    Abstract: A polarizing plate includes a polarizer, a bonding layer on an upper surface of the polarizer, a protective film on an upper surface of the bonding layer and having a moisture transmittance of about 30 g/m2·24 hr or less at 40° C. and 90% relative humidity (RH), and a barrier layer on a lower surface of the polarizer and formed of a barrier layer composition including an alicyclic epoxy resin having a glass transition temperature of about 200° C. or more. The polarizing plate may have a light transmittance variation rate of 3% or less, as calculated by Equation 1: Light transmittance variation rate=|T0?T500|/T0×100??(1), where T0 is an initial light transmittance and T500 is a light transmittance after 500 hours as set forth herein.
    Type: Application
    Filed: February 16, 2016
    Publication date: August 18, 2016
    Inventors: Do Heon LEE, Tae Hyun LEE, In Cheon HAN
  • Publication number: 20160062016
    Abstract: A composition for protective layers of a polarizing plate includes a photocurable monomer or oligomer having a glass transition temperature (Tg) of about 50° C. or greater, particles, a reactive monomer or oligomer, and an initiator. A polarizing plate includes a polarizer and a protective layer formed from the composition on one or both surfaces of the polarizer. The protective layer has a storage modulus at about 25° C. of greater than about 2000 MPa, as measured at a heating rate of 10° C./min, a temperature of ?50° C. to 100° C., a frequency of 1 Hz, and a strain of 0.5%. An optical display includes the polarizing plate.
    Type: Application
    Filed: August 27, 2015
    Publication date: March 3, 2016
    Inventors: Do Heon Lee, Mi Yeon Yu, Tae Hyun Lee, In Cheon Han
  • Publication number: 20150315431
    Abstract: An adhesive composition for a polarizing plate, an adhesive film formed from the same, a polarizing plate including the same, and an optical display including the same are disclosed. The adhesive film for a polarizing plate is formed from an adhesive composition including an epoxy compound and a (meth)acrylate compound, and the adhesive film has an FT-IR peak ratio of about 0.015 or lower as defined by Equation 1. Equation 1 FT-IR peak ratio=B/A??(1) In Equation 1, A is the peak height of the peak attributable to the —(C?O)— bond at 1724 cm?1, and B is the peak height of the peak attributable to the —CH?CH— bond at 1636 cm?1.
    Type: Application
    Filed: April 29, 2015
    Publication date: November 5, 2015
    Inventors: Mi Yeon Yu, Yoo Jin Suh, Do Heon Lee, Seung Hoon Lee, Tae Hyun Lee, Ri Ra Jung, Woo Jin Jeong, In Cheon Han
  • Publication number: 20150166856
    Abstract: Disclosed are an adhesive composition for polarizing plates, a polarizing plate using the same, a method for preparing the same, and an optical member including the same. The adhesive composition includes (A) a (meth)acrylic radical compound, (B) a cationic epoxy compound, (C) a phenoxy resin, and (D) a photoinitiator.
    Type: Application
    Filed: February 27, 2013
    Publication date: June 18, 2015
    Inventors: Mi Yeon Yu, Tae Hyun Lee, Do Heon Lee, Ik Hwan Cho, In Cheon Han
  • Publication number: 20150104650
    Abstract: An adhesive composition for polarizing plates includes: (A) a non-(meth)acrylate type epoxy compound; (B) a non-epoxy type (meth)acrylate compound; and (C) a (meth)acrylate group-containing epoxy compound. A polarizing plate includes an adhesive layer formed from the adhesive composition on a polarizer, and a protective film on the adhesive layer. A display apparatus includes the polarizing plate.
    Type: Application
    Filed: August 27, 2014
    Publication date: April 16, 2015
    Inventors: Mi Yeon Yu, Do Heon Lee, Tae Hyun Lee, In Cheon Han