Patents by Inventor Jin-hyun Cho

Jin-hyun Cho 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: 20230344082
    Abstract: A separator for a secondary battery, including: a porous polymer substrate having a first and a second surface; a first coating layer on the first surface of the porous polymer substrate, wherein the first coating layer includes a plurality of inorganic particles and a first binder polymer; a second coating layer on the second surface of the porous polymer substrate, wherein the second coating layer includes a plurality of inorganic particles and the first binder polymer; and a third coating layer between the porous polymer substrate and the first coating layer, and/or between the porous polymer substrate and the second coating layer, wherein the third coating layer includes a second binder polymer. The second binder polymer includes a non-wetting polymer. The present disclosure also relates to a method for manufacturing the separator and a secondary battery including the separator.
    Type: Application
    Filed: September 29, 2021
    Publication date: October 26, 2023
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Jin-Hyun CHO, Young-Bok KIM, Dong-Wook SUNG, Jong-Yoon LEE
  • Patent number: 11630343
    Abstract: A display apparatus includes a light source emitting light; a light guide plate having a first surface and a second surface, and spreading light emitted from the light source therein to emit light through the first surface; and a local dimming unit configured to pass or scatter light emitted through the second surface of the light guide plate according to a position. The local dimming unit may include: an electro-optical layer configured to which optical properties change according to an electric field; and a plurality of electrodes positioned on the same plane to generate the electric field.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: April 18, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun Cho, Nam Seok Roh, Sang Hyun Sohn, Jong Hee Han
  • Patent number: 11385398
    Abstract: A backlight unit includes a light guide plate; a light source provided on a side surface of the light guide plate, and configured to inject light into the light guide plate; a circular polarizing reflective layer provided on a front surface of the light guide plate, and configured to reflect a first polarizing component and transmit a second polarizing component among components of light emitted from the light guide plate; and a cholesteric liquid crystal layer provided on the front surface of the circular polarizing reflective layer and including a plurality of regions, and configured to reflect or transmit the second polarizing component that has passed through the circular polarizing reflective layer according to a voltage applied to each of the plurality of regions.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: July 12, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun Cho, Ki Hyung Kang
  • Patent number: 11367403
    Abstract: A display apparatus includes a plurality of light sources configured to emit light; a light guide plate having a first surface and a second surface, configured to spread light emitted from the plurality of light sources therein to emit light through the first surface; and a local dimming unit configured to reflect or scatter light emitted through the second surface of the light guide plate according to a location. The local dimming unit may include an electro-optical layer configured to change optical properties according to an electric field; a plurality of electrodes located on the same plane, configured to generate the electric field; and a controller configured to change a voltage applied to the plurality of electrodes according to an image.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: June 21, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun Cho, Nam Seok Roh, Sang Hyun Sohn, Jong Hee Han
  • Patent number: 11350282
    Abstract: Provided is a method for detecting abnormal traffic. The method comprises collecting non-access stratum (NAS) traffic between a user equipment (UE) and a mobility management node, identifying a ciphering algorithm supported by the UE from a network access request message transmitted from the UE to the mobility management node, and identifying the UE as a first type of terminal at risk based on a determination that the UE only supports a null ciphering algorithm.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: May 31, 2022
    Assignee: KOREA INTERNET & SECURITY AGENCY
    Inventors: Do Won Kim, Seong Min Park, Bo Min Choi, Young Kwon Park, Jin Hyun Cho, Hyung Jin Cho, Sung Moon Kwon
  • Publication number: 20220050240
    Abstract: A backlight unit includes a light guide plate; a light source provided on a side surface of the light guide plate, and configured to inject light into the light guide plate; a circular polarizing reflective layer provided on a front surface of the light guide plate, and configured to reflect a first polarizing component and transmit a second polarizing component among components of light emitted from the light guide plate; and a cholesteric liquid crystal layer provided on the front surface of the circular polarizing reflective layer and including a plurality of regions, and configured to reflect or transmit the second polarizing component that has passed through the circular polarizing reflective layer according to a voltage applied to each of the plurality of regions.
    Type: Application
    Filed: April 5, 2019
    Publication date: February 17, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun CHO, Ki Hyung KANG
  • Publication number: 20220046423
    Abstract: Provided is a method for detecting abnormal traffic. The method comprises collecting non-access stratum (NAS) traffic between a user equipment (UE) and a mobility management node, identifying a ciphering algorithm supported by the UE from a network access request message transmitted from the UE to the mobility management node, and identifying the UE as a first type of terminal at risk based on a determination that the UE only supports a null ciphering algorithm.
    Type: Application
    Filed: May 27, 2021
    Publication date: February 10, 2022
    Applicant: KOREA INTERNET & SECURITY AGENCY
    Inventors: Do Won Kim, Seong Min Park, Bo Min Choi, Young Kwon Park, Jin Hyun Cho, Hyung Jin Cho, Sung Moon Kwon
  • Publication number: 20210373386
    Abstract: A display apparatus includes a light source emitting light; a light guide plate having a first surface and a second surface, and spreading light emitted from the light source therein to emit light through the first surface; and a local dimming unit configured to pass or scatter light emitted through the second surface of the light guide plate according to a position. The local dimming unit may include: an electro-optical layer configured to which optical properties change according to an electric field; and a plurality of electrodes positioned on the same plane to generate the electric field.
    Type: Application
    Filed: November 8, 2018
    Publication date: December 2, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun CHO, Nam Seok ROH, Sang Hyun SOHN, Jong Hee HAN
  • Publication number: 20210366410
    Abstract: The display apparatus may comprise: a plurality of light sources for emitting light; a light guide plate, having a first surface and a second surface, for internally diffusing the light emitted from the plurality of light sources and emitting through the first surface; and a local dimming unit for reflecting or scattering, on the basis of location, the light emitted from the second surface of the light guide plate. Moreover, the local dimming unit may comprise: an electro-optic layer, the optical properties of which vary in accordance with an electric field; a plurality of electrodes located on the same plane and generating the electric field; and a control unit for varying the voltage applied to the plurality of electrodes in accordance with an image.
    Type: Application
    Filed: November 8, 2018
    Publication date: November 25, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun CHO, Nam Seok ROH, Sang Hyun SOHN, Jong Hee HAN
  • Patent number: 11125931
    Abstract: The present disclosure relates to a display apparatus including a display panel, a light guide panel disposed in the rear of the display panel, a light source disposed adjacent to a side surface of the light guide panel, a quantum dot conversion member disposed to be inclined with respect to the light source, including quantum dot particles, and configured to convert properties of light emitted from the light source, and a transparent member including a first surface facing the light source, a second surface facing the quantum dot conversion member, and a third surface disposed adjacent to the side surface of the light guide panel, wherein the transparent member is configured to transmit at least one part of the light incident on the third surface to the side surface of the light guide panel and reflect the other part of the light to the inside thereof.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: September 21, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun Cho, Go Hyun Kim, Heongseog Lee, Hyun Jun Jung, Jong Hee Han
  • Patent number: 11099428
    Abstract: Disclosed herein is a display apparatus. The display apparatus includes a backlight unit emitting light forward, a liquid crystal panel disposed in front of the backlight unit and having a front polarizing film, and a diffusion film disposed in front of the liquid crystal panel, wherein the diffusion film includes a first refraction layer having a lens portion projecting forward, a second refraction layer disposed in front of the first refraction layer, a retardation member disposed at a front end of the lens portion, and a film polarizing layer disposed in front of the retardation member.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: August 24, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun Cho, Go Hyun Kim, Sang Hyun Sohn, Jong Hee Han
  • Patent number: 11069899
    Abstract: The present invention relates to a negative electrode for a secondary battery. The negative electrode for the secondary battery according to an embodiment of the present invention comprises a negative electrode collector and a negative electrode active material integrated with at least a portion of a surface of the negative electrode collector, wherein the negative electrode collector has a plurality of delamination prevention current collection grooves with which the negative electrode active material is integrated, and the negative electrode active material is disposed on an inner surface of each of the delamination prevention current collection grooves so that a space part in which a passivation layer is formed is defined during charging and discharging.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: July 20, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Jin Hyun Cho, Hyun Woong Yun
  • Publication number: 20210200032
    Abstract: Disclosed herein is a display apparatus. The display apparatus includes a backlight unit emitting light forward, a liquid crystal panel disposed in front of the backlight unit and having a front polarizing film, and a diffusion film disposed in front of the liquid crystal panel, wherein the diffusion film includes a first refraction layer having a lens portion projecting forward, a second refraction layer disposed in front of the first refraction layer, a retardation member disposed at a front end of the lens portion, and a film polarizing layer disposed in front of the retardation member.
    Type: Application
    Filed: August 30, 2018
    Publication date: July 1, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun CHO, Go Hyun KIM, Sang Hyun SOHN, Jong Hee HAN
  • Publication number: 20210191026
    Abstract: The present disclosure relates to a display apparatus including a display panel, a light guide panel disposed in the rear of the display panel, a light source disposed adjacent to a side surface of the light guide panel, a quantum dot conversion member disposed to be inclined with respect to the light source, including quantum dot particles, and configured to convert properties of light emitted from the light source, and a transparent member including a first surface facing the light source, a second surface facing the quantum dot conversion member, and a third surface disposed adjacent to the side surface of the light guide panel, wherein the transparent member is configured to transmit at least one part of the light incident on the third surface to the side surface of the light guide panel and reflect the other part of the light to the inside thereof.
    Type: Application
    Filed: October 16, 2018
    Publication date: June 24, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun CHO, Go Hyun KIM, Heongseog LEE, Hyun Jun JUNG, Jong Hee HAN
  • Patent number: 10945117
    Abstract: Provided are methods of detecting a Diameter spoofing attack. According to an embodiment, the method comprises, obtaining a normal International Mobile Subscriber Identity (IMSI) from a packet of a Diameter S6a protocol transmitted from a Mobile Management Entity (MME) to a Home Subscriber Server (HSS) of a home network, adding a record comprising the normal IMSI to a session table, obtaining an Insert Subscriber Data Request (IDR) message of the Diameter S6a protocol and determining a category of the IDR message.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: March 9, 2021
    Assignee: KOREA INTERNET & SECURITY AGENCY
    Inventors: Seong Min Park, Young Kwon Park, Bo Min Choi, Eun Hye Ko, Tae Eun Kim, Jin Hyun Cho, Do Won Kim, Hyung Jin Cho, Hwan Kuk Kim
  • Patent number: 10877305
    Abstract: Provided is a display apparatus including a light source configured to emit light; a light guide plate configured to diffuse and emit light emitted from the light source; and a local dimming portion configured to pass or scatter light emitted from the light guide plate. The local dimming portion may include an electro-optical material and a plurality of grains having refractive index that changes based on an electric field.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: December 29, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun Cho, Nam Seok Roh, Won Geun Ryu, Sang Hyun Sohn, Hyo Gun Lee
  • Patent number: 10686193
    Abstract: The present disclosure relates to a negative electrode for a lithium secondary battery comprising a mesh-type current collector and a lithium thin film, and in particular, to a negative electrode in which a lithium thin film is inserted to an opening of a current collector and empty space is formed, a lithium secondary battery comprising the same, and a manufacturing method thereof. The present disclosure is capable of enhancing safety of the lithium secondary battery by preventing lithium dendrite growth. In addition, the present disclosure is capable of preventing stripping of the negative electrode current collector and the lithium thin film while charging and discharging the battery since adhesion efficiency increases between the negative electrode and the current collector.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: June 16, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Hyunjin Oh, Jin Hyun Cho, Hyunwoong Yun
  • Publication number: 20200064664
    Abstract: Provided is a display apparatus including a light source configured to emit light; a light guide plate configured to diffuse and emit light emitted from the light source; and a local dimming portion configured to pass or scatter light emitted from the light guide plate. The local dimming portion may include an electro-optical material and a plurality of grains having refractive index that changes based on an electric field.
    Type: Application
    Filed: August 7, 2019
    Publication date: February 27, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun CHO, Nam Seok ROH, Won Geun RYU, Sang Hyun SOHN, Hyo Gun LEE
  • Publication number: 20200026110
    Abstract: Disclosed herein is an outdoor display device capable of improving image visibility. The outdoor display device includes a housing unit having an opening in a front surface thereof, a glass unit prepared or positioned in the opening of the housing unit, and a display unit prepared or positioned in the housing unit, and including a liquid crystal display panel disposed in a rear of the glass unit to display an image, and the glass unit includes a transparent member, a polarizing film on a rear of the transparent member, and a ?/4 film on at least any one of the polarizing film and the liquid crystal display panel.
    Type: Application
    Filed: September 27, 2019
    Publication date: January 23, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Soo PYO, Jung Kyun KIM, Jin Hyun CHO
  • Patent number: RE49065
    Abstract: A liquid crystal panel assembly includes a liquid crystal panel, a backlight module having at least one light emitting diode (LED) light source to irradiate light to the liquid crystal panel, and a housing which surrounds the liquid crystal panel and the backlight module. At least a portion of the housing adjacent to the at least one LED light source is formed of a thermal-conductive material.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: May 10, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin-hyun Cho, Joon Kang