Patents by Inventor Byeong Do Kwak

Byeong Do Kwak 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: 12455407
    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: Grant
    Filed: March 3, 2017
    Date of Patent: October 28, 2025
    Assignees: Samsung SDI Co., Ltd., Samsung Electronics Co., Ltd.
    Inventors: Ik Hwan Cho, Byeong Do Kwak, Il Jin Kim, Sung Hyun Mun, Gwang Hwan Lee, Jae Hyun Han
  • Patent number: 12384938
    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: Grant
    Filed: February 28, 2022
    Date of Patent: August 12, 2025
    Assignees: SAMSUNG SDI CO., LTD., SAMSUNG ELECTRONICS CO., LTD.
    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
  • Patent number: 12297382
    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: Grant
    Filed: July 20, 2020
    Date of Patent: May 13, 2025
    Assignees: Samsung SDI Co., Ltd., Samsung Electronics Co., Ltd.
    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: 20240327684
    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 3, 2024
    Publication date: October 3, 2024
    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: 11999879
    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: Grant
    Filed: October 12, 2020
    Date of Patent: June 4, 2024
    Assignees: Samsung SDI Co., Ltd., Samsung Electronics Co., Ltd.
    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: 11618837
    Abstract: Provided are an adhesive film, an optical member including the same, and an optical display device including the same, the adhesive film being formed from a monomer mixture comprising an alkyl group-containing acrylate and a hydroxyl group-containing acrylate, wherein the adhesive film has a modulus of 80 kPa or less at ?20° C., and the adhesive film has a value of 40% to 140% in equation 1 at 25° C.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: April 4, 2023
    Assignees: Samsung SDI Co., Ltd., Samsung Electronics Co., Ltd.
    Inventors: Ji Ho Kim, Ji Won Kang, Jin Young Lee, Jae Hyun Han, Byeong Do Kwak, Il Jin Kim, Sung Hyun Mun, Gwang Hwan Lee, Ik Hwan Cho, In Chui Hwang
  • Publication number: 20230048574
    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: October 12, 2022
    Publication date: February 16, 2023
    Inventors: Jae Hyun HAN, Hyung Rang MOON, Byeong Do KWAK, IL Jin KIM, Ji Ho KIM, Sung Hyun MUN, Gwang Hwan LEE
  • Patent number: 11535775
    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: Grant
    Filed: December 17, 2015
    Date of Patent: December 27, 2022
    Assignees: SAMSUNG SDI CO., LTD., SAMSUNG ELECTRONICS CO., LTD.
    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
  • Patent number: 11492516
    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: Grant
    Filed: December 21, 2015
    Date of Patent: November 8, 2022
    Assignees: Samsung SDI Co., Ltd., Samsung Electronics Co., Ltd.
    Inventors: Jae Hyun Han, Hyung Rang Moon, Byeong Do Kwak, Il Jin Kim, Ji Ho Kim, Sung Hyun Mun, Gwang Hwan Lee
  • Publication number: 20220298385
    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: February 28, 2022
    Publication date: September 22, 2022
    Inventors: Ji Ho KIM, Hyung Rang MOON, II Jin KIM, Byeong Do KWAK, Jee Hee KIM, Sung Hyun MUN, Seon Hee SHIN, Gwang Hwan LEE, Woo Jin LEE, Eun Hwa LEE, lk Hwan CHO, Jae Hyun HAN
  • Publication number: 20220177732
    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: February 28, 2022
    Publication date: June 9, 2022
    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: 20220177735
    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: February 28, 2022
    Publication date: June 9, 2022
    Inventors: Ji Ho KIM, Hyung Rang MOON, II Jin KIM, Byeong Do KWAK, Jee Hee KIM, Sung Hyun MUN, Seon Hee SHIN, Gwang Hwan LEE, Woo Jin LEE, Eun Hwa LEE, lk Hwan CHO, Jae Hyun HAN
  • Publication number: 20210032512
    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: October 12, 2020
    Publication date: February 4, 2021
    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: 10829671
    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: Grant
    Filed: June 30, 2016
    Date of Patent: November 10, 2020
    Assignees: Samsung SDI Co., Ltd., Samsung Electronics Co., Ltd.
    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
  • Publication number: 20200347270
    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: July 20, 2020
    Publication date: November 5, 2020
    Inventors: Ji Ho Kim, Hyung Rang Moon, II Jin Kim, Byeong Do Kwak, Jee Hee Kim, Sung Hyun Mun, Seon Hee Shin, Gwang Hwan Lee, Woo Jin Lee, Eun Hwa Lee, lk Hwan Cho, Jae Hyun Han
  • Patent number: 10745597
    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: Grant
    Filed: October 30, 2015
    Date of Patent: August 18, 2020
    Assignee: SAMSUNG SDI CO., LTD.
    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
  • Patent number: 10676654
    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: Grant
    Filed: April 19, 2017
    Date of Patent: June 9, 2020
    Assignees: Samsung SDI Co., Ltd., Samsung Electronics Co., Ltd.
    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
  • Patent number: 10669450
    Abstract: A flexible display device of the present invention comprises a photoelectric element part; a first adhesive film formed on the photoelectric element part; a touch function part formed on the first adhesive film; a second adhesive film formed on the touch function part; and a window film formed on the second adhesive film; wherein the first adhesive film or the second adhesive film has an average slope of about ?9.9 to about 0 at ?20° C. to 80° C. based on x-axis for the distribution of storage modulus versus temperature in the function of x-axis of temperature (° C.) and y-axis of storage modulus (KPa) and wherein the first adhesive film or the second adhesive film has a storage modulus of about 10 KPa or more at 80° C.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: June 2, 2020
    Assignees: Samsung SDI Co., Ltd., Samsung Electronics Co., Ltd.
    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
  • Publication number: 20200157386
    Abstract: Provided are an adhesive film, an optical member including the same, and an optical display device including the same, the adhesive film being formed from a monomer mixture comprising an alkyl group-containing acrylate and a hydroxyl group-containing acrylate, wherein the adhesive film has a modulus of 80 kPa or less at ?20° C., and the adhesive film has a value of 40% to 140% in equation 1 at 25° C.
    Type: Application
    Filed: May 14, 2018
    Publication date: May 21, 2020
    Inventors: Ji Ho KIM, Ji Won KANG, Jin Young LEE, Jae Hyun HAN, Byeong Do KWAK, Il Jin KIM, Sung Hyun MUN, Gwang Hwan LEE, Ik Hwan CHO, In Chul HWANG
  • Patent number: 10603876
    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: Grant
    Filed: February 23, 2017
    Date of Patent: March 31, 2020
    Assignees: Samsung SDI Co., Ltd., Samsung Electronics Co., Ltd.
    Inventors: Byeong Do Kwak, Sung Hyun Mun, Ik Hwan Cho