Patents by Inventor Ri Ra Jung

Ri Ra Jung 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).

  • Publication number: 20190107657
    Abstract: Provided are a polarizing plate for a light emitting display device and the light emitting display device including same, the polarizing plate for a light emitting display device having a first adhesive film, a second protective layer, a polarizer, and a first protective layer sequentially laminated therein. The polarizing plate includes a UV absorber; and an as value of the polarizing plate is about ?2.0 to about ?20.0, and a bs value of the polarizing plate is about 3.0 to about 30.0.
    Type: Application
    Filed: December 21, 2016
    Publication date: April 11, 2019
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Ri Ra JUNG, Eun Hwan JEONG, Dong Yoon SHIN, Mun Bo KO, Na Young KIM, Jin Joo KIM, Eun Su PARK, Kyoung Ah OH, Tae Joon PARK, Su Yeon LEE
  • Patent number: 9765244
    Abstract: An adhesive film for polarizing plates includes a (meth)acrylic copolymer obtained by polymerizing about 15 wt % to about 30 wt % of a (meth)acrylic monomer having a hetero-alicyclic ring. The adhesive film has a storage modulus (G?) of about 30 kPa or greater as determined from Frequency sweep testing at 85° C. by oscillation at an angular speed of 10?3 rad/s to 102 rad/s. An adhesive composition for the same, a polarizing plate including the same, and an optical display device including the same are also disclosed.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: September 19, 2017
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Won Kim, Ri Ra Jung, Irina Nam, Ha Yun Cho, In Cheon Han
  • Patent number: 9464212
    Abstract: An adhesive composition and an optical member using the same, the adhesive composition providing an adhesive having a storage modulus of about 8×105 to about 1×108 dyne/cm2 and a gel fraction of about 83% to about 95% as defined by Equation 1: Gel fraction (%)=(A/B)×100,??[Equation 1] in Equation 1, A is a mass measured after dissolving the adhesive at 23° C. for 48 hours in a solvent and then drying for 24 hours, and B is an initial mass.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: October 11, 2016
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Woo Jin Jeong, Chul Jeong, Ri Ra Jung, Hee Yeon Ki
  • 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
  • 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
  • Patent number: 9097855
    Abstract: An adhesive for adhering a protective film, the protective film having a water vapor transmission rate of about 100 g/m2·day or less at 40° C. and about 90% RH during manufacture of an optical member including a polarizing plate, a polarizing plate including an adhesive layer prepared from the adhesive, and an optical member including the polarizing plate, the adhesive including a (meth)acrylic copolymer, the (meth)acrylic copolymer having a weight average molecular weight of about 800,000 g/mol or more; a curing agent; and a silane coupling agent, wherein an adhesive layer prepared from the adhesive has a storage modulus, after curing, of about 8×103 Pa or more at about 85° C. and a frequency of about 10?3 rad/s to about 102 rad/s.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: August 4, 2015
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Ri Ra Jung, Yi Eun Kim
  • 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: 20140186553
    Abstract: A polarizing plate and an optical display including the same. The polarizing plate includes a polarizer and an adhesive sheet stacked on one surface of the polarizer, wherein the adhesive sheet includes an adhesive and a reinforcing material impregnated into the adhesive.
    Type: Application
    Filed: December 31, 2013
    Publication date: July 3, 2014
    Applicant: CHEIL INDUSTRIES INC.
    Inventor: Ri Ra Jung
  • Publication number: 20140186554
    Abstract: Disclosed are an adhesive for polarizing plates, a polarizing plate including an adhesive layer, and a liquid crystal display. The adhesive includes a (meth)acrylic copolymer, a curing agent, and a silane coupling agent, wherein the (meth)acrylic copolymer has an average molecular weight of at least 800,000 g/mol. The adhesive has a storage modulus ranging from approximately 8,000 Pa or more to less than approximately 27,000 Pa at 85° C. and at a frequency ranging from 10?3 rad/s to 102 rad/s after curing, and is configured to bond a protective film having a water vapor transmission rate (WVTR) of approximately 100 g/m2/day or less at 40° C. and 90% RH. The polarizing plate includes a polarizer, a first protective film on a top surface of the polarizer, a second protective film on a bottom surface of the polarizer, and an adhesive layer on a bottom surface of the second protective film.
    Type: Application
    Filed: December 26, 2013
    Publication date: July 3, 2014
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Ri Ra Jung, In Cheon Han
  • Publication number: 20140186605
    Abstract: An adhesive film for polarizing plates includes a (meth)acrylic copolymer obtained by polymerizing about 15 wt % to about 30 wt % of a (meth)acrylic monomer having a hetero-alicyclic ring. The adhesive film has a storage modulus (G?) of about 30 kPa or greater as determined from Frequency sweep testing at 85° C. by oscillation at an angular speed of 10?3 rad/s to 102 rad/s. An adhesive composition for the same, a polarizing plate including the same, and an optical display device including the same are also disclosed.
    Type: Application
    Filed: December 30, 2013
    Publication date: July 3, 2014
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Won Kim, Ri Ra Jung, Irina Nam, Ha Yun Cho, In Cheon Han
  • Publication number: 20130170035
    Abstract: An adhesive for adhering a protective film, the protective film having a water vapor transmission rate of about 100 g/m2·day or less at 40° C. and about 90% RH during manufacture of an optical member including a polarizing plate, a polarizing plate including an adhesive layer prepared from the adhesive, and an optical member including the polarizing plate, the adhesive including a (meth)acrylic copolymer, the (meth)acrylic copolymer having a weight average molecular weight of about 800,000 g/mol or more; a curing agent; and a silane coupling agent, wherein an adhesive layer prepared from the adhesive has a storage modulus, after curing, of about 8×103 Pa or more at about 85° C. and a frequency of about 10?3 rad/s to about 102 rad/s.
    Type: Application
    Filed: December 28, 2012
    Publication date: July 4, 2013
    Inventors: Ri Ra JUNG, Yi Eun KIM
  • 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: 20120171480
    Abstract: An adhesive composition and an optical member using the same, the adhesive composition providing an adhesive having a storage modulus of about 8×105 to about 1×108 dyne/cm2 and a gel fraction of about 83% to about 95% as defined by Equation 1: Gel fraction (%)=(A/B)×100,??[Equation 1] in Equation 1, A is a mass measured after dissolving the adhesive at 23° C. for 48 hours in a solvent and then drying for 24 hours, and B is an initial mass.
    Type: Application
    Filed: September 23, 2011
    Publication date: July 5, 2012
    Inventors: Woo Jin JEONG, Chul Jeong, Ri Ra Jung, Hee Yeon Ki