Patents by Inventor Gwang Hwan LEE

Gwang Hwan 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: 11953552
    Abstract: The present disclosure relates to a system and apparatus for monitoring a partial discharge in a switchboard, including a plurality of partial discharge sensors provided in each of a plurality of switchboards to acquire partial discharge data generated in at least one switchboard, and a noise sensor provided in any one of the plurality of switchboards to acquire noise data to be differentiated from the partial discharge data acquired from the at least one partial discharge sensor, and it can be applied to other exemplary embodiments.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: April 9, 2024
    Assignee: LS ELECTRIC CO., LTD.
    Inventors: Chang Hwan Jin, Jong Ung Choi, Hyun Ho Kwon, Gwang Goo Kang, Jin Ho Lee
  • Publication number: 20230159802
    Abstract: Provided are an adhesive film, an optical member comprising same, and an optical display device comprising same, the adhesive film being formed of a composition comprising a hydroxyl group-containing (meth)acrylic copolymer and particles having a refractive index of about 1.5 or greater, wherein the adhesive film has a refractive index of about 1.5 or greater, and the adhesive film satisfies expression 1 and expression 2.
    Type: Application
    Filed: May 13, 2021
    Publication date: May 25, 2023
    Inventors: Do Young KIM, Ji Yeon KIM, Sung Hyun MUN, Dong Myeong SHIN, Gwang Hwan LEE, Il Jin KIM
  • Publication number: 20230151246
    Abstract: Provided are: an adhesive composition comprising (i) (meth)acrylic prepolymer having a hydroxyl group and an alkyl group, and (ii) at least one of an aromatic group-containing (meth)acrylate, an alicyclic group-containing (meth)acrylate, and a heteroalicyclic group-containing (meth)acrylate, and having a shear viscosity of about 0.04 Pa·s or less at 40° C., wherein an adhesive layer formed of the adhesive composition has a modulus of about 0.3 MPa or less at ?20° C. and a peel strength of about 400 gf/in or more; an adhesive layer formed therefrom; and an optical display device comprising same.
    Type: Application
    Filed: April 6, 2021
    Publication date: May 18, 2023
    Inventors: Dong Myeong SHIN, Do Young KIM, Il Jin KIM, Ji Yeon KIM, Sung Hyun MUN, Gwang Hwan LEE, Ji Young 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
  • Publication number: 20230029017
    Abstract: A multilayer adhesive sheet, an optical member including the same, and a display apparatus including the same are provided. A multilayer adhesive sheet includes: a base layer; a first adhesive layer stacked on a surface of the base layer; and a second adhesive layer stacked on another surface of the base layer, and the base layer includes a polyurethane-based film manufactured by solution casting and has a storage modulus of 700 MPa to 1,500 MPa at ?20° C. and a storage modulus of 10 MPa to 100 MPa at 85° C.
    Type: Application
    Filed: July 8, 2022
    Publication date: January 26, 2023
    Inventors: Dong Myeong SHIN, Gwang Hwan LEE, Sung Hyun MUN, Il Jin KIM, Do Young KIM
  • 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: 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: 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: 20210332273
    Abstract: The present invention provides: a porous adhesive film which is formed from an adhesive composition including (meth)acrylic copolymers having hydroxyl groups and alkylene glycol groups, and which has a modulus of less than approximately 30 kPa at 25° C. and a peel strength of approximately 700 gf/in or greater at 25° C.; an optical member comprising same; and an optical display device comprising same.
    Type: Application
    Filed: June 26, 2019
    Publication date: October 28, 2021
    Inventors: Sung Hyun MUN, Ji Ho KIM, Ji Won KANG, Il Jin KIM, Kyoung Gon PARK, Gwang Hwan LEE, Jin Young LEE, Jae Hyun HAN
  • Publication number: 20210261833
    Abstract: An adhesive film, a scattering prevention film including the same, and an optical display apparatus including the same are provided. An adhesive film is formed of an adhesive composition including: a polymerization product including a hydroxyl group-containing (meth)acrylic copolymer; and an alkylene oxide cross-linking agent. The adhesive film contains a substituted monocyclic cyclyloxy group and has a peel strength of about 950 gf/in or more, as measured with respect to a glass plate at about 25° C.
    Type: Application
    Filed: February 19, 2021
    Publication date: August 26, 2021
    Inventors: Sung Hyun MUN, Ji Won KANG, Do Young KIM, Il Jin KIM, Ji Yeon KIM, Ji Ho KIM, Kyoung Gon PARK, Dong Myeong SHIN, Gwang Hwan LEE, Jin Young LEE, Jae Hyun HAN, Ji Young HAN, Se Mi HEO
  • 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