Patents by Inventor Hyung-Seok Jang

Hyung-Seok Jang 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: 10703896
    Abstract: The present disclosure relates to a transparent thermoplastic resin and a method of preparing the same. More particularly, the present disclosure provides a transparent thermoplastic resin that provides superior transparency without generation of flow marks on a surface, and does not exhibit cracks or a whitening phenomenon during processing due to superior whitening resistance, particularly superior whitening resistance at low temperature, a method of preparing the transparent thermoplastic resin, and the like.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: July 7, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Jeong Su Choi, Won Seok Lee, Seok Goo Jang, Roo Da Lee, Sang Hoo Park, Ho Hoon Kim, Hyung Seop Shim, Keun Hoon Yoo, Hye Jeong Ok
  • Publication number: 20200196143
    Abstract: An authentication system includes: an authentication server configured to perform an authentication procedure for an online service server and a mobile authentication application installed on a mobile device to perform an authentication procedure for a connection terminal connected to the online service server, wherein the authentication server generates a service authentication code in response to a service request of a user to the online service server through the connection terminal, transmits the service authentication code to the online service server such that the online service server discloses the service authentication code on a service screen, performs PKI(Public Key Infrastructure)-based encryption, and transmits an encrypted service authentication code or an encrypted service authentication code-related value to the mobile authentication application to enable the user to verify the service authentication code through a screen of the mobile authentication application.
    Type: Application
    Filed: June 30, 2017
    Publication date: June 18, 2020
    Applicant: eStorm Co., LTD.
    Inventors: Jong Hyun WOO, Hyung Seok JANG, Ho Jin JO, Joon Hyun LEE
  • Publication number: 20200140672
    Abstract: The present invention relates to a thermoplastic resin composition showing excellent transparency and whitening resistance. The thermoplastic resin composition of the present invention comprises (A) a graft copolymer having a multilayer structure and (B) a thermoplastic copolymer, wherein the graft copolymer having a multilayer structure (A) comprises a core of a conjugated diene-based rubber latex having a weight average particle diameter of 500 ? to 2,000 ?; an intermediate layer; and a graft layer. The glass transition temperature of the intermediate layer is 40° C. or less, the glass transition temperature of the graft layer is 80° C. or more, and the refractive index difference between the graft copolymer (A) and the thermoplastic copolymer (B) is less than 0.01.
    Type: Application
    Filed: September 20, 2018
    Publication date: May 7, 2020
    Inventors: Jeong Su CHOI, Won Seok LEE, Roo Da LEE, Jong Ju LEE, Keun Hoon YOO, Seok Goo JANG, Sang Hoo PARK, Hye Jeong OK, Ho Hoon KIM, Hyung Seop SHIM
  • Patent number: 10626227
    Abstract: Disclosed are a method of preparing a resin powder and an integrated reactor for the same. When a coagulation process is performed using an acidic coagulant in the integrated coagulator for latex coagulation and aging according to the present invention, a remaining acidic coagulant is also removed from a reactor through neutralization, and thus, a resin powder having enhanced moist-heat resistance and thermal stability may be prepared.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: April 21, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Min Cheol Ju, Min Seung Shin, Won Seok Lee, Hyung Sub Lee, Seok Goo Jang, Jeong Su Choi, Sung Won Hong, In Soo Kim, Ho Hoon Kim, Sang Hoo Park, Keun Hoon Yoo, Roo Da Lee
  • Patent number: 10547020
    Abstract: A white organic light emitting device, which is increased in color gamut and lifespan, is discussed and an organic light emitting display device using the same and in a stack having different emission layers disposed in contact with each other, particular properties of a host and a dopant in a major emission layer are used.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: January 28, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Jae-Seung Jang, Tae-Shick Kim, Hyung-June Kim, Min Yun, Tae-Seok Lim
  • Patent number: 10497744
    Abstract: A light emitting device includes a first electrode, an insulating layer, a second electrode, and a bar-type light emitting diode (LED). The insulating layer includes a plurality of protruding parts protruding from the first electrode and at least one hole between the protruding parts. The second electrode on the insulating layer. The bar-type LED is in the at least one hole. The bar-type LED has a first end and a second end in the length direction. One of the first or second ends is connected to the first electrode and the other of the first or second ends is connected to the second electrode.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: December 3, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Sup Lee, Jung Hun Noh, Sang Hee Jang, Hyung Il Jeon, Byung Seok Choi
  • Publication number: 20190339553
    Abstract: A display device includes: a semiconductor layer including source (SR), drain (DR), and channel (CR) regions; a first insulating layer (FIL) on the semiconductor layer; a gate line on the FIL and overlapping the CR; a second insulating layer (SIL) on the gate line; a first contact hole (FCH) in the FIL and the SIL, and exposing the SR; a data line on the SIL and contacting the SR; a third insulating layer (TIL) on the data line; a second contact hole (SCH) in the first to third insulating layers and exposing the DR; a drain electrode on the TIL and contacting the DR; a color filter on the TIL and not overlapping the SCH; a pixel electrode (PE) on the color filter and contacting the drain electrode; and an organic layer on the TIL and the PE. Upper surfaces of the organic layer and the PE are substantially coplanar.
    Type: Application
    Filed: March 25, 2019
    Publication date: November 7, 2019
    Inventors: Hyung Il JEON, Sang Hee Jang, Byung Seok Choi
  • Publication number: 20190330463
    Abstract: The present invention relates to a graft copolymer, a thermoplastic resin composition including the graft copolymer, and a method of preparing the thermoplastic resin composition. More specifically, the present invention provides a graft copolymer having a shell in which silica modified with a specific compound is dispersed within a specific content range, a thermoplastic resin composition including the graft copolymer, and a method of preparing the thermoplastic resin composition. In the graft copolymer according to the present invention, since silica modified with a specific compound is dispersed in the periphery of rubber particles, that is, in the shell of the graft copolymer, the dispersibility of the graft copolymer may be improved. Therefore, the graft copolymer may have transparency equal to or better than a conventional graft copolymer.
    Type: Application
    Filed: September 4, 2018
    Publication date: October 31, 2019
    Inventors: Hyung Seop SHIM, Won Seok LEE, Seok Goo JANG, Sang Hoo PARK, Hye Jeong OK, Jeong Su CHOI, Keun Hoon YOO, Roo Da LEE, Ho Hoon KIM, Jong Ju LEE
  • Patent number: 10436960
    Abstract: The present invention relates to a method for manufacturing a polarizing element including locally bleached areas including steps of providing a polarizing element including a polyvinyl alcohol-based polarizer in which at least one or more of iodine and dichroic dye is oriented in a certain direction; partially bleaching the polyvinyl alcohol-based polarizer by bringing a bleaching solution into contact with one surface of the polyvinyl alcohol-based polarizer through a printing method; and correcting an appearance of the partially bleached polarizing element.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: October 8, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Beom Seok Lee, Eung Jin Jang, Kyun Il Rah, Hyung Koo Kang, Byung Sun Lee, Du Jin Choi, Ho Jeong Yun
  • Patent number: 10429560
    Abstract: The present invention relates to a method for manufacturing a polarizing element including locally bleached areas including steps of providing a polarizing element including a polyvinyl alcohol-based polarizer in which at least one of iodine and dichroic dye is oriented in a certain direction; forming a mask layer including at least one punched area on one surface of the polarizing element; partially bleaching the polarizing element formed with the mask layer by immersing the polarizing element into a bleaching solution; and correcting an appearance of the partially bleached polarizing element.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: October 1, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Beom Seok Lee, Eung Jin Jang, Kyun Il Rah, Hyung Koo Kang, Byung Sun Lee, Du Jin Choi, Ho Jeong Yun
  • Patent number: 10418576
    Abstract: A light emitting diode including a first electrode; a second electrode overlapping the first electrode; an emission layer positioned between the first electrode and the second electrode; and an electron transporting region positioned between the second electrode and the emission layer, wherein the electron transporting region includes a tellurium compound of a rare earth metal.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: September 17, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong Chan Kim, Ji Young Moon, Yeong Rong Park, Dong Kyu Seo, Myung Chul Yeo, Ji Hye Lee, Hyung Seok Jang, Won Jong Kim, Yoon Hyeung Cho
  • Publication number: 20190229148
    Abstract: A light emitting device includes a first electrode, an insulating layer, a second electrode, and a bar-type light emitting diode (LED). The insulating layer includes a plurality of protruding parts protruding from the first electrode and at least one hole between the protruding parts. The second electrode on the insulating layer. The bar-type LED is in the at least one hole. The bar-type LED has a first end and a second end in the length direction. One of the first or second ends is connected to the first electrode and the other of the first or second ends is connected to the second electrode.
    Type: Application
    Filed: April 3, 2019
    Publication date: July 25, 2019
    Inventors: Hyun Sup Lee, Jung Hun Noh, Sang Hee Jang, Hyung Il Jeon, Byung Seok Choi
  • Patent number: 10347897
    Abstract: Disclosed herein is a secondary battery configured to have a structure in which an electrode assembly of a cathode/separator/anode structure is mounted in a battery case in a state in which the electrode assembly is impregnated with an electrolyte, wherein electrode tabs are attached to active material uncoated portions of electrode plates of the electrode assembly and an anode tab, which is one of the electrode tabs and one end of which is attached to a battery case, is made of a Cu—Ni alloy.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: July 9, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Wook Hee Jang, Yong Ro Lee, Hyung Seok Han, Hyang Mok Lee, Sang Sok Jung
  • Patent number: 10340293
    Abstract: A transistor display panel includes a substrate, a gate line disposed on the substrate, a data line disposed on the substrate, and a transistor disposed on the substrate. The transistor includes a first electrode, a second electrode overlapping the first electrode, a semiconductor layer disposed between the first electrode and the second electrode, and a gate electrode. The semiconductor layer is disposed in an overlapping region where the gate line and the data line overlap each other.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: July 2, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jung-Hun Noh, Hyun Sup Lee, Sang-Hee Jang, Hyung-Il Jeon, Byung Seok Choi
  • Patent number: 10329416
    Abstract: The present disclosure relates to a thermoplastic resin composition and a molded article manufactured from the same. More particularly, the present disclosure relates to a thermoplastic resin composition including (A) a graft copolymer prepared by graft-copolymerizing a conjugated diene rubber, a (meth)acrylic acid alkyl ester compound, a methylene butyrolactone compound, and an aromatic vinyl compound; and (B) a copolymer prepared by copolymerizing a (meth)acrylic acid alkyl ester compound, an aromatic vinyl compound, and a vinyl cyanide compound, and a molded article manufactured from the thermoplastic resin composition. In accordance with the present disclosure, a thermoplastic resin composition having superior heat resistance and transparency and a molded article manufactured from the same are provided.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: June 25, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Won Seok Lee, Jeong Su Choi, Keun Hoon Yoo, Seok Goo Jang, Roo Da Lee, Sang Hoo Park, Ho Hoon Kim, Hyung Seop Shim
  • Patent number: 10316179
    Abstract: The present invention relates to a transparent thermoplastic resin. More particularly, the present invention relates to a transparent thermoplastic resin, including a random copolymerization block prepared by polymerizing 50 to 80% by weight of an aromatic vinyl compound, 10 to 30% by weight of a vinyl cyanide compound, and 0 to 15% by weight of (meth)acrylic acid alkyl ester; and an aromatic vinyl compound block prepared by polymerizing 1 to 10% by weight of an aromatic vinyl compound, a transparent thermoplastic resin composition including the transparent thermoplastic resin, and methods of preparing the aromatic vinyl compound and transparent thermoplastic resin.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: June 11, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Roo Da Lee, Jeong Su Choi, Keun Hoon Yoo, Won Seok Lee, Seok Goo Jang, Sang Hoo Park, Ho Hoon Kim, Hyung Seop Shim
  • Publication number: 20190081266
    Abstract: A light emitting diode including a first electrode; a second electrode overlapping the first electrode; an emission layer positioned between the first electrode and the second electrode; and an electron transporting region positioned between the second electrode and the emission layer, wherein the electron transporting region includes a tellurium compound of a rare earth metal.
    Type: Application
    Filed: March 15, 2018
    Publication date: March 14, 2019
    Inventors: Dong Chan KIM, Ji Young MOON, Yeong Rong PARK, Dong Kyu SEO, Myung Chul YEO, Ji Hye LEE, Hyung Seok JANG, Won Jong KIM, Yoon Hyeung CHO
  • Patent number: 8704986
    Abstract: A liquid crystal display device and a method of manufacturing the liquid crystal device are disclosed. The liquid crystal display device includes a red subpixel, a green subpixel, a blue subpixel, and a viewing angle controlling subpixel. The red, green, and blue subpixels are driven in a TN method, and the viewing angle controlling subpixel is driven in an ECB method. Therefore, the liquid crystal display device provides flexibility in a security range to a user, and not only can be used for one person but also can be used for two or more persons to view an image of high quality without inconvenience while securing security.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: April 22, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun Suk Jin, Hyung Seok Jang
  • Patent number: 8576356
    Abstract: A liquid crystal display device and a method for driving the same are provided. The liquid crystal display device includes a first liquid crystal layer selectively driven by a first electric field in a first direction; and a second liquid crystal layer selectively driven a second electric field in a second direction, the second direction being different from the first direction.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: November 5, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun Suk Jin, Hyung Seok Jang
  • Patent number: 8482704
    Abstract: Provided are an LCD device that can control a viewing angle freely and a manufacturing method thereof. The LCD device includes a first substrate, a second substrate, and an LC layer interposed between the first and second substrates. The LCD device further includes red, green, blue, and viewing angle controlling subpixels. These subpixels are driven in a VA mode. The red, green, and blue subpixels have a transflective structure. The viewing angle controlling subpixel has a transmissive or transflective structure.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: July 9, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun Suk Jin, Hyung Seok Jang, Tae Han Kim