Patents by Inventor Hye Won Jeong

Hye Won Jeong 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: 20210300805
    Abstract: The present disclosure relates to an apparatus for inhibiting formation of calcium based crystal, in which formation of calcium based crystals is inhibited by adding an optimal amount of magnesium to raw water having a high concentration of calcium ions and a high variation in calcium ion concentration and an apparatus for water treatment using the same.
    Type: Application
    Filed: September 16, 2020
    Publication date: September 30, 2021
    Inventors: Hye-won Kim, Seong Pil Jeong, Seockheon Lee
  • Patent number: 11118015
    Abstract: The laminate for manufacturing a flexible substrate according to the present invention is formed by using a polyimide having a high absorbance to a UV laser in an organic sacrificial layer for delaminating a flexible substrate from a carrier substrate. Therefore, it is possible that the laser energy density required in the delaminating process using laser irradiation is reduced and the amount of as generated by the delaminating process is remarkably reduced so that the efficiency of the process, the permeability of the flexible substrate is improved and the reliability of the device is improved.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: September 14, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Hye Won Jeong, Cheolmin Yun, Kyungjun Kim, Bora Shin
  • Publication number: 20210269533
    Abstract: An anti-c-Met antibody or antibody fragment and pharmaceutical composition comprising same, as well as a method for preventing and treating cancer by administering the antibody to a subject are provided.
    Type: Application
    Filed: March 5, 2021
    Publication date: September 2, 2021
    Inventors: Seung Hyun LEE, Geun Woong KIM, Kyung Ah KIM, Hye Won PARK, Ho Yeong SONG, Young Mi OH, Saet Byoul LEE, Ji Min LEE, Kwang Ho CHEONG, Yun Ju JEONG, Mi Young CHO, Jae Hyun CHOI, Yun Jeong SONG, Yoon Aa CHOI
  • Patent number: 11029305
    Abstract: This invention relates to a method of evaluating the identity of polymers and a system using the same, and more particularly to a novel method of evaluating the identity of polymers, wherein the identity of multiple polymers, rather than just one polymer, can be determined using only information about structures of the polymers, without the need to determine the characteristics of synthesized polymers through real-world experimentation. In order to evaluate the identity of polymers, the identity index PohoFactor(Xi) for each of target polymers is developed and used, and the identity of polymers can be accurately determined on a quantitative basis by evaluating correlations between the identity indices for all polymers, the identity of which is to be determined.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: June 8, 2021
    Inventors: Seung-Yup Lee, Ji-Won Jeong, Hye-Won Jeong, Kyoung-Hoon Kim
  • Publication number: 20210147679
    Abstract: Provided according to the present invention is a substrate for a flexible display device in which the problems of threshold voltage shift-induced current fluctuation and resultant image sticking can be solved by introducing an imide monomer as an organic filler into a polyamic acid composition to enhance thickness and surface direction densities in the film that is manufactured while vulcanization is performed at high temperatures, thereby enhancing thermal diffusivity and thermal conductivity of the film.
    Type: Application
    Filed: January 23, 2019
    Publication date: May 20, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Kyunghwan KIM, Hye Won JEONG, Chan Hyo PARK, Jinyoung PARK
  • Patent number: 10903497
    Abstract: The present disclosure relates to a cathode including a cathode active material and poly(amic acid). When the lithium secondary battery including the cathode is in an abnormal operation range of 160° C. or higher, condensation reaction of poly(amic acid) occurs to form polyimide. The polyimide surrounds cathode active material particles in the form of a coating film and prevents transport of lithium ions and electrons to interrupt current flow, and inhibits abnormal heat emission and thermal runaway or combustion caused by additional reactions.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: January 26, 2021
    Inventors: Su-Rim Lee, Su-Hyun Kim, Hye-Won Jeong, Jae-Hyun Lee
  • Patent number: 10882957
    Abstract: A method for producing a device substrate by obtaining a laminate comprising a carrier substrate with a first polyimide film disposed on at least one surface of the carrier substrate, a second polyimide film disposed on the first polyimide film, applying a physical stimulus to the second polyimide film without causing chemical changes in the first polyimide film such that the adhesive strength of the first polyimide to the second polyimide film decreases and separating the second polyimide film from the first polyimide film formed on the carrier substrate to obtain the device.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: January 5, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Hye Won Jeong, Kyungjun Kim, Kyoung Hoon Kim, Chan Hyo Park, BoRa Shin, Seung Yup Lee, HangAh Park, JinHo Lee, MiRa Im
  • Publication number: 20200165452
    Abstract: A polyimide film according to the present invention can be effectively used as a substrate for a flexible display device without a deterioration in heat resistance even at a temperature of 350° C. or higher since a coefficient of thermal expansion (A) in the section of 100-350° C., of the polyimide film, and a coefficient of thermal expansion (B) in the section of 350-450° C.
    Type: Application
    Filed: August 27, 2018
    Publication date: May 28, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Hye Won JEONG, Chan Hyo PARK, Jinho LEE, Jinyoung PARK, Kyunghwan KIM, Ye Ji HONG, Danbi CHOI
  • Patent number: 10647883
    Abstract: The present invention relates to a polyimide-based solution that can be used to produce an isotropic transparent polyimide-based film with high heat resistance and excellent mechanical properties as well as high transmittance. A coating of the polyimide-based solution on a substrate has a haze of 1% or less after storage at a temperature of 30° C. and a humidity of 70% for 30 minutes.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: May 12, 2020
    Assignee: LG CHEM. LTD.
    Inventors: Cheolmin Yun, BoRa Shin, Hye Won Jeong, Kyungjun Kim, HangAh Park
  • Publication number: 20200062904
    Abstract: Described is a polyimide prepared from a diamine containing a spiro or cardo group in a molecule structure, wherein the dimensional stability of the polyimide can be improved at a high temperature, and thus the polyimide can provide a polyimide film useful for a flexible substrate.
    Type: Application
    Filed: January 17, 2018
    Publication date: February 27, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Hye Won JEONG, Kichul KOO, Kyungjun KIM
  • Publication number: 20200062906
    Abstract: The laminate for manufacturing a flexible substrate according to the present invention is formed by using a polyimide having a high absorbance to a UV laser in an organic sacrificial layer for delaminating a flexible substrate from a carrier substrate. Therefore, it is possible that the laser energy density required in the delaminating process using laser irradiation is reduced and the amount of as generated by the delaminating process is remarkably reduced so that the efficiency of the process, the permeability of the flexible substrate is improved and the reliability of the device is improved.
    Type: Application
    Filed: January 19, 2018
    Publication date: February 27, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Hye Won JEONG, Cheolmin YUN, Kyungjun KIM, Bora SHIN
  • Publication number: 20200040152
    Abstract: The present invention relates to a laminated film roll body, around which a laminated film is wound, the laminated film including: a first polyimide film; and a second polyimide film laminated on the first polyimide film and made of a fluorine-based, siloxane-based, or amine-based polyamic acid, wherein the second polyimide film has a glass transition temperature of 350° C. or higher when measured by a temperature elevation rate of 20° C./min. The laminated film roll body can be used in a continuous manufacturing process of a flexible device to improve process yield and efficiency.
    Type: Application
    Filed: March 16, 2018
    Publication date: February 6, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Cheolmin YUN, Hye Won JEONG, Kyungjun KIM
  • Patent number: 10544266
    Abstract: Disclosed is a polyimide precursor composition for the production of a flexible board of a photoelectronic device. The polyimide precursor composition includes a polyimide precursor derived from a diamine or acid dianhydride including a structure of Formula 1: wherein R1 to R8, m1, m2, and m3 are as defined in the specification. Also disclosed is a polyimide film produced from the polyimide precursor composition. The polyimide film is obtained by applying the precursor composition to a substrate and curing the composition. The polyimide film has high transparency and good heat resistance. In addition, the polyimide film exhibits good dimensional stability because the substrate does not undergo an increase in stress even during high-temperature heat treatment.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: January 28, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Cheolmin Yun, Hye Won Jeong, BoRa Shin, Kyungjun Kim
  • Patent number: 10517171
    Abstract: The present invention relates to a method for producing a flexible substrate. According to the method of the present invention, a flexible substrate layer can be easily separated from a carrier substrate even without the need for laser or light irradiation so that a device can be prevented from deterioration of reliability and occurrence of defects caused by laser or light irradiation. In addition, according to the method of the present invention, a flexible substrate can be continuously produced in an easier manner based on a roll-to-roll process.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: December 24, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Hye Won Jeong, Yong Goo Son, Kyungjun Kim, Bo Ra Shin, Chang Yoon Lim
  • Patent number: 10512171
    Abstract: The present invention relates to a method for producing a metal wire embedded flexible substrate from a laminate structure. The laminate structure includes a carrier substrate, a debonding layer disposed on at least one surface of the carrier substrate and including a polyimide resin, a metal wiring layer disposed in contact with the debonding layer, and a flexible substrate layer disposed in contact with the metal wiring layer. The adhesion strength between the metal wiring layer and the flexible substrate layer is greater than that between the metal wiring layer and the debonding layer. According to the method of the present invention, the flexible substrate with the metal wiring layer can be easily separated from the carrier substrate even without the need for other processes, such as laser and light irradiation.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: December 17, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Hye Won Jeong, Bo Ra Shin, Kyungjun Kim, Ji Eun Myung, Yong Goo Son
  • Patent number: 10414869
    Abstract: The present invention relates to a laminate and a device fabricated using the laminate. The laminate includes a debonding layer including a polyimide resin between a carrier substrate and a flexible substrate. The adhesive strength of the debonding layer to the flexible substrate is changed by a physical stimulus. According to the present invention, the flexible substrate can be easily separated from the carrier substrate without the need for further processing such as laser or light irradiation. Therefore, the use of the laminate facilitates the fabrication of the device having the flexible substrate. The device may be, for example, a flexible display device. In addition, the device can be prevented from deterioration of reliability and occurrence of defects caused by laser or light irradiation. This ensures improved characteristics and high reliability of the device.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: September 17, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Hye Won Jeong, Kyungjun Kim, Kyoung Hoon Kim, Chan Hyo Park, BoRa Shin, Seung Yup Lee, HangAh Park, JinHo Lee, MiRa Im
  • Publication number: 20190276618
    Abstract: The present invention provides a polyimide film forming composition which comprises a polyamic acid or a polyimide in an oligomer form or in a low-molecular weight form, the polyamic acid or the polyimide being prepared from a diamine containing an intramolecular imide group, and thus can provide a polyimide film having improved heat resistance while retaining optical properties thereof. In addition, the polyimide film according to the present invention can reduce not only a laser energy density (E/D) required in the laser exfoliation process but also remarkably decrease an amount of ash generated by an exfoliation process, thereby further improving the reliability of a device in a display manufacturing process.
    Type: Application
    Filed: October 27, 2017
    Publication date: September 12, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Bo Ra SHIN, Cheolmin YUN, Hye Won JEONG, Kyungjun KIM
  • Patent number: 10346514
    Abstract: Disclosed is a method and device for displaying a widget for an extended service. The method may include identifying, in a messaging application, link information or summary information of a content page corresponding to the link information, transferring the link information to a message server providing an instant messaging service of the messaging application, receiving, from the message server, widget information to provide an access to an event registered by an entity related to the link information or an extended service applicable to the entity related to the link information among extended services registered in the message server, and displaying a widget based on the widget information.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: July 9, 2019
    Assignee: KAKAO CORP.
    Inventors: Yeda Eun Kim, Kyoung Won Lee, Hye Won Jeong
  • Patent number: 10338054
    Abstract: This invention relates to a method of evaluating monomers having an effect on copolymer characteristics and a system using the same, and particularly to a novel method of evaluating the magnitude of the effect of monomers on copolymer characteristics, which cannot be evaluated using existing methods. The method of evaluating monomers having an effect on copolymer characteristics and the system using the same are innovative because the extent of changes in copolymer characteristics can be predicted at the monomer level by quantitatively evaluating the effect of the monomers on the copolymer characteristics, taking into consideration the kind or linkage type of monomers.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: July 2, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Seung-Yup Lee, Hye-Won Jeong, Ji-Won Jeong, Kyoung-Hoon Kim
  • Publication number: 20190088950
    Abstract: The present disclosure relates to a cathode including a cathode active material and poly(amic acid). When the lithium secondary battery including the cathode is in an abnormal operation range of 160° C. or higher, condensation reaction of poly(amic acid) occurs to form polyimide. The polyimide surrounds cathode active material particles in the form of a coating film and prevents transport of lithium ions and electrons to interrupt current flow, and inhibits abnormal heat emission and thermal runaway or combustion caused by additional reactions.
    Type: Application
    Filed: March 31, 2017
    Publication date: March 21, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Su-Rim Lee, Su-Hyun Kim, Hye-Won Jeong, Jae-Hyun Lee