Patents by Inventor Sung Hyun MUN

Sung Hyun MUN 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: 20170306193
    Abstract: An adhesive film, an optical member including the same, and an optical display including the same are provided. The adhesive film is formed of a monomer mixture including a hydroxyl group-containing (meth)acrylate and an alkyl group-containing (meth)acrylate, and has a bubble generation area ratio of 0%, as measured on a specimen (length×width: 13 cm×3 cm) by repeating the described cycle 10 times, in which the specimen is prepared by sequentially stacking a polyethylene terephthalate film (thickness: 50 ?m), the adhesive film (thickness: 100 ?m) and a polyethylene terephthalate film (thickness: 100 ?m) to have a three-layer structure, and is bent towards the PET film (thickness: 50 ?m) such that the specimen is placed between frames having a gap of about 1 cm therebetween and the length of the specimen is halved and the cycle is sequentially accomplished for 24 hours.
    Type: Application
    Filed: April 19, 2017
    Publication date: October 26, 2017
    Inventors: Hyung Rang Moon, Byeong Do Kwak, Il Jin Kim, Ji Ho Kim, Sung Hyun Mun, Seon Hee Shin, Gwang Hwan Lee, Jin Young Lee, Ik Hwan Cho, Jae Hyun Han
  • Publication number: 20170309867
    Abstract: Disclosed is a flexible display apparatus. The flexible display apparatus includes a display part, a first adhesive film, an optical film, a second adhesive film, and a window film sequentially stacked, and the second adhesive film has a water-vapor permeability of about 200 g/m2·24 hr or less, and the first adhesive film has a lower restoration force than the second adhesive film, as calculated by the Equation B set forth herein.
    Type: Application
    Filed: April 19, 2017
    Publication date: October 26, 2017
    Inventors: Sung Hyun Mun, Byeong Do Kwak, Ji Won Kang, Il Jin Kim, Ji Ho Kim, Hyung Rang Moon, Seon Hee Shin, Gwang Hwan Lee, Jin Young Lee, Ik Hwan Cho, Jae Hyun Han, In Chul Hwang
  • Publication number: 20170253769
    Abstract: An adhesive film, an optical member including the same, and an optical display including the same are provided. An adhesive film has a tan ? ratio at 25° C. of about 1 to about 2 as calculated by Equation 1 and a tan ? ratio at ?20° C. of about 0.1 to about 1.5 as calculated by Equation 2, and is formed of an adhesive composition including a monomer mixture including a hydroxyl group-containing (meth)acrylic acid ester.
    Type: Application
    Filed: March 3, 2017
    Publication date: September 7, 2017
    Inventors: Ik Hwan Cho, Byeong Do Kwak, Il Jin Kim, Sung Hyun Mun, Gwang Hwan Lee, Jae Hyun Han
  • Publication number: 20170247579
    Abstract: A flexible display apparatus includes a display unit, a first adhesive film on the display unit, an optical film on the first adhesive film, a second adhesive film on the optical film, and a window film on the second adhesive film, and the second adhesive film has a higher modulus than the first adhesive film at ?20° C. to 25° C.
    Type: Application
    Filed: February 23, 2017
    Publication date: August 31, 2017
    Inventors: Byeong Do Kwak, Sung Hyun Mun, Ik Hwan Cho
  • Publication number: 20170002237
    Abstract: An adhesive film and a display member including the same are disclosed. The adhesive film is formed of an adhesive composition including: a copolymer of a monomer mixture including a hydroxyl group-containing (meth)acrylate and a comonomer; and nanoparticles. The adhesive film has a creep at ?20° C. of about 50 ?m to about 100 ?m and a gel fraction of about 50% to about 75%.
    Type: Application
    Filed: June 30, 2016
    Publication date: January 5, 2017
    Inventors: Ik Hwan Cho, Ji Ho Kim, Jee Hee Kim, Ji Won Kang, Byeong Do Kwak, Yong Tae Kim, Il Jin Kim, Sung Hyun Mun, Hyung Rang Moon, Seon Hee Shin, Gwang Hwan Lee, Woo Jin Lee, Jae Hyun Han
  • Patent number: 9382457
    Abstract: An adhesive film, an adhesive composition for the same, and an optical member including the same, the adhesive film having an index of refraction of about 1.48 or more and a dielectric constant variation of about 30% or less, as expressed by Equation 1: Dielectric ? ? constant ? ? variation ? ? ( % ) = ( A - B ) A × 100 , [ Equation ? ? 1 ] wherein A is the dielectric constant of the adhesive film measured at a frequency of 103 Hz, and B is the dielectric constant of the adhesive film measured at a frequency of 106 Hz, and/or the adhesive film including a (meth)acrylate copolymer having carbonate groups and an aromatic groups.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: July 5, 2016
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Lee June Kim, Ik Hwan Cho, Ki Yong Kim, Sung Hyun Mun, In Cheon Han
  • Publication number: 20160177146
    Abstract: An adhesive film and a display member, the adhesive film being formed of an adhesive composition that includes a monomer mixture comprising a hydroxyl group-containing (meth)acrylate and a comonomer, wherein the adhesive film has a recovery rate of about 40% to about 99%, the recovery rate being determined according to Method A as described herein, and wherein the adhesive film has a bubble generation area of about 0%, the bubble generation area being determined according to Method B as described herein.
    Type: Application
    Filed: December 17, 2015
    Publication date: June 23, 2016
    Inventors: Sung Hyun MUN, Byeong Do KWAK, Il Jin KIM, Ji Ho KIM, Hyung Rang MOON, Gwang Hwan LEE, Ik Hwan CHO, Jae Hyun HAN
  • Publication number: 20160177147
    Abstract: An adhesive film is formed of an adhesive composition that includes a monomer mixture including a hydroxyl group-containing (meth)acrylate and a comonomer, and nanoparticles. The adhesive film has a glass transition temperature (Tg) of about ?20° C. or less, an index of refraction of about 1.40 to about 1.55, and a haze of about 3% or less at a thickness of 100 ?m.
    Type: Application
    Filed: December 21, 2015
    Publication date: June 23, 2016
    Inventors: Jae Hyun HAN, Hyung Rang MOON, Byeong Do KWAK, IL Jin KIM, Ji Ho KIM, Sung Hyun MUN, Gwang Hwan LEE
  • Patent number: 9346986
    Abstract: An adhesive film, an adhesive composition for the same, and a display apparatus including the same. The adhesive film includes a urethane functional group, has a glass transition temperature (Tg) of about 30° C. or less, a loss modulus of about 4×104 dyn/cm2 to about 8×104 dyn/cm2 upon frequency sweep testing under conditions of a strain of 3%, 60° C. and 1 rad/s, and tan ? of about 0.2 to 0.55 upon frequency sweep testing under conditions of a strain of 3%, 60° C. and 1 rad/s.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: May 24, 2016
    Assignee: CHEIL INDUSTRIES INC.
    Inventors: Lee June Kim, Ki Yong Kim, Jee Hee Kim, Chan Woo Kim, Sung Hyun Mun, Ik Hwan Cho, In Cheon Han
  • Publication number: 20160122599
    Abstract: An adhesive film has an average slope of about ?9.9 to about 0, as measured over a temperature range of about ?20° C. to about 80° C. in a graph depicting a temperature-dependent storage modulus distribution of the adhesive film where the x-axis represents temperature (° C.) and the y-axis represents storage modulus (kPa). The adhesive film also has a storage modulus at about 80° C. of about 10 kPa to about 1,000 kPa.
    Type: Application
    Filed: October 30, 2015
    Publication date: May 5, 2016
    Inventors: Ji Ho Kim, Hyung Rang Moon, Il Jin Kim, Byeong Do Kwak, Jee Hee Kim, Sung Hyun Mun, Seon Hee Shin, Gwang Hwan Lee, Woo Jin Lee, Eun Hwa Lee, Ik Hwan Cho, Jae Hyun Han
  • Publication number: 20160122600
    Abstract: An adhesive composition including a monomer mixture including a hydroxyl group-containing (meth)acrylate and a comonomer; and organic particles, the organic particles having an average particle diameter of about 10 nm to about 400 nm.
    Type: Application
    Filed: October 27, 2015
    Publication date: May 5, 2016
    Inventors: Hyung Rang MOON, Ji Ho KIM, Il Jin KIM, Byeong Do KWAK, Jee Hee KIM, Sung Hyun MUN, Seon Hee SHIN, Gwang Hwan LEE, Woo Jin LEE, Eun Hwa LEE, Ik Hwan CHO, Jae Hyun HAN, Chung Kun CHO
  • Publication number: 20150315425
    Abstract: An adhesive film and an optical display, the adhesive film being prepared from an adhesive composition that includes a (meth)acrylic copolymer, wherein the adhesive film has an elongation of about 750% to about 3,000%, and satisfies the following Equation 1: PB/PY=about 3.0 to about 20, wherein PB is a break point in gf of the adhesive film and PY is a yield point in gf of the adhesive film.
    Type: Application
    Filed: April 29, 2015
    Publication date: November 5, 2015
    Inventors: Sung Hyun MUN, Ki Yong KIM, Jee Hee KIM, Chan Woo KIM, Ik Hwan CHO, In Cheon HAN
  • Publication number: 20140205827
    Abstract: An adhesive film including a compound including a urethane functional group, the adhesive film having a ratio (B/A) of 180° peel strength (B) after leaving the adhesive film at 70° C. for 2 minutes to 180° peel strength (A) at 25° C. of about 5 or more, is disclosed. A display apparatus including the adhesive film is also disclosed.
    Type: Application
    Filed: January 21, 2014
    Publication date: July 24, 2014
    Applicant: Cheil Industries Inc.
    Inventors: Sung Hyun Mun, Lee June Kim, Ik Hwan Cho, Chan Woo Kim, In Cheon Han
  • Publication number: 20140186604
    Abstract: An adhesive film, an adhesive composition for the same, and a display apparatus including the same. The adhesive film includes a urethane functional group, has a glass transition temperature (Tg) of about 30° C. or less, a loss modulus of about 4×104 dyn/cm2 to about 8×104 dyn/cm2 upon frequency sweep testing under conditions of a strain of 3%, 60° C. and 1 rad/s, and tan ? of about 0.2 to 0.55 upon frequency sweep testing under conditions of a strain of 3%, 60° C. and 1 rad/s.
    Type: Application
    Filed: December 26, 2013
    Publication date: July 3, 2014
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Lee June Kim, Ki Yong Kim, Jee Hee Kim, Chan Woo Kim, Sung Hyun Mun, Ik Hwan Cho, In Cheon Han
  • Publication number: 20140186603
    Abstract: An adhesive film, an adhesive composition for the same, and a display member including the same are disclosed. The adhesive film includes a cured product of an adhesive composition, which includes a (meth)acrylic copolymer formed from a monomer mixture including (a1) an alkyl (meth)acrylate having a C1 to C17 alkyl group and (a2) an alkyl (meth)acrylate having an alkyl group having 18 or more carbon atoms. The adhesive film has a ratio (B/A) of 90° peel strength (B) after aging the adhesive film at 25° C. for 30 minutes and leaving the adhesive film at 90° C. for 40 seconds to 90° peel strength (A) after aging the adhesive film at 25° C. for 30 minutes of about 0.1 or less.
    Type: Application
    Filed: December 26, 2013
    Publication date: July 3, 2014
    Applicant: Cheil Industries Inc.
    Inventors: Jee Hee Kim, Ki Yong Kim, Lee June Kim, Chan Woo Kim, Sung Hyun Mun, Ik Hwan Cho, In Cheon Han
  • Publication number: 20130345333
    Abstract: An adhesive film, an adhesive composition for the same, and an optical member including the same, the adhesive film having an index of refraction of about 1.48 or more and a dielectric constant variation of about 30% or less, as expressed by Equation 1: Dielectric ? ? constant ? ? variation ? ? ( % ) = ( A - B ) A × 100 , [ Equation ? ? 1 ] wherein A is the dielectric constant of the adhesive film measured at a frequency of 103 Hz, and B is the dielectric constant of the adhesive film measured at a frequency of 106 Hz, and/or the adhesive film including a (meth)acrylate copolymer having carbonate groups and an aromatic groups.
    Type: Application
    Filed: June 26, 2013
    Publication date: December 26, 2013
    Inventors: Lee June KIM, Ik Hwan CHO, Ki Yong KIM, Sung Hyun MUN, In Cheon HAN