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: 20190062590
    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: Application
    Filed: October 31, 2018
    Publication date: February 28, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Cheolmin YUN, BoRa SHIN, Hye Won JEONG, Kyungjun KIM, HangAh PARK
  • Patent number: 10144847
    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: June 1, 2015
    Date of Patent: December 4, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Cheolmin Yun, BoRa Shin, Hye Won Jeong, Kyungjun Kim, HangAh Park
  • Publication number: 20180334541
    Abstract: A method for producing a device substrate by obtaining a laminate comprising a carrier substrate, a first polyimide film comprising a first polyimide resin disposed on at least one surface of the carrier substrate, a second polyimide film disposed on the first polyimide film opposite to the surface of the first polyimide film formed on a surface of the carrier substrate; applying a physical stimulus to the second polyimide film without causing chemical changes in the first polyimide film such that the cross-sections of the second polyimide film are exposed and cross-sectional surfaces of the first polyimide film are not exposed and no physical stimulus is applied to the surface of the carrier substrate, wherein the adhesive strength of the first polyimide to the second polyimide film decreases when the second polyimide film in the laminate is cut to expose cross-sectional surfaces of the second polyimide film; and separating the second polyimide film from the first polyimide film formed on the carrier substra
    Type: Application
    Filed: July 27, 2018
    Publication date: November 22, 2018
    Applicant: 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
  • Patent number: 10109818
    Abstract: The present application relates to a plastic substrate, a method for producing same, an organic electronic device, and display light source and lighting apparatus. The plastic substrate according to the present application has superb light extraction efficiency and exhibits an excellent surface roughness characteristic. Furthermore, the method for producing the plastic substrate according to the present application can produce the plastic substrate by means of a process in which scattering components are added secondarily. Moreover, the plastic substrate according to the present application can be utilized as a substrate for an organic electronic device, and the organic electronic device can be utilized as display light source and lighting apparatus.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: October 23, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Sang Jun Park, Yeon Keun Lee, Yong Nam Kim, Hye Won Jeong, Bo Ra Shin
  • Patent number: 10035883
    Abstract: The present invention relates to a laminate and a device fabricated using the laminate. The laminate includes a first polyimide resin layer between a carrier substrate and a second polyimide resin layer, wherein the first polyimide resin layer has a coefficient of thermal expansion (CTE) equal to or lower than the CTE of the second polyimide-based resin layer at a temperature of 100 to 200° C., and the adhesive strength of the first resin layer to the second resin layer decreases when a physical stimulus causing no chemical changes in the first resin layer is applied to the laminate. 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.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: July 31, 2018
    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: 20180007799
    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: Application
    Filed: June 8, 2016
    Publication date: January 4, 2018
    Applicant: LG CHEM, LTD.
    Inventors: Hye Won JEONG, Bo Ra SHIN, Kyungjun KIM, Ji Eun MYUNG, Yong Goo SON
  • Publication number: 20170374737
    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: Application
    Filed: July 25, 2016
    Publication date: December 28, 2017
    Applicant: LG CHEM, LTD.
    Inventors: Hye Won JEONG, Yong Goo SON, Kyungjun KIM, Bo Ra SHIN, Chang Yoon LIM
  • Publication number: 20170307585
    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: Application
    Filed: December 8, 2015
    Publication date: October 26, 2017
    Applicant: LG Chem, Ltd.
    Inventors: Seung-Yup Lee, Hye-Won Jeong, Ji-Won Jeong, Kyoung-Hoon Kim
  • Publication number: 20170299569
    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: Application
    Filed: December 8, 2015
    Publication date: October 19, 2017
    Applicant: LG Chem, Ltd.
    Inventors: Seung-Yup Lee, Ji-Won Jeong, Hye-Won Jeong, Kyoung-Hoon Kim
  • Patent number: 9761832
    Abstract: Provided are a substrate for an organic electronic device (OED) and a use thereof. The substrate may have excellent interfacial cohesive property by preventing interlayer delamination between the organic material layer and the inorganic material layer when being applied to manufacture a flexible device including a structure in which an organic material layer and an inorganic material layer are present together. In addition, when the substrate for an OED is used, an OED may have excellent durability and an excellent another required physical property such as light extraction efficiency.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: September 12, 2017
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Ji Hee Kim, Hang Ah Park, Sang Jun Lee, Hye Won Jeong, Jung Hyoung Lee, Bo Ra Shin, Mi Ra Im
  • Publication number: 20170133634
    Abstract: The present application relates to a plastic substrate, a method for producing same, an organic electronic device, and display light source and lighting apparatus. The plastic substrate according to the present application has superb light extraction efficiency and exhibits an excellent surface roughness characteristic. Furthermore, the method for producing the plastic substrate according to the present application can produce the plastic substrate by means of a process in which scattering components are added secondarily. Moreover, the plastic substrate according to the present application can be utilized as a substrate for an organic electronic device, and the organic electronic device can be utilized as display light source and lighting apparatus.
    Type: Application
    Filed: August 28, 2015
    Publication date: May 11, 2017
    Inventors: Sang Jun PARK, Yeon Keun LEE, Yong Nam KIM, Hye Won JEONG, Bo Ra SHIN
  • Publication number: 20170109328
    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: Application
    Filed: October 20, 2016
    Publication date: April 20, 2017
    Applicant: KAKAO CORP.
    Inventors: Yeda Eun KIM, Kyoung Won LEE, Hye Won JEONG
  • Publication number: 20170096530
    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: Application
    Filed: March 7, 2016
    Publication date: April 6, 2017
    Applicant: LG CHEM, LTD.
    Inventors: Cheolmin YUN, Hye Won JEONG, BoRa SHIN, Kyungjun KIM
  • Patent number: 9611358
    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 having a similarity score not greater than 0.5, as calculated by Equation 1 defined in the detailed description, between a carrier substrate and a flexible substrate. 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: April 4, 2017
    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
  • Patent number: 9588369
    Abstract: The present application relates to a liquid crystal cell, a method for preparing a liquid crystal cell and a display device. An exemplary liquid crystal cell may be applied to various types of display devices so as to control a viewing angle or light transmittance of the display device.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: March 7, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Sung Joon Min, Dong Hyun Oh, Jun Won Chang, Kyung Jun Kim, Hye Won Jeong, Moon Soo Park
  • Publication number: 20160251545
    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: Application
    Filed: June 1, 2015
    Publication date: September 1, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Cheolmin YUN, BoRa SHIN, Hye Won JEONG, Kyungjun KIM, HangAh PARK
  • Publication number: 20160056411
    Abstract: Provided are a substrate for an organic electronic device (OED) and a use thereof. The substrate may have excellent interfacial cohesive property by preventing interlayer delamination between the organic material layer and the inorganic material layer when being applied to manufacture a flexible device including a structure in which an organic material layer and an inorganic material layer are present together. In addition, when the substrate for an OED is used, an OED may have excellent durability and an excellent another required physical property such as light extraction efficiency.
    Type: Application
    Filed: September 30, 2014
    Publication date: February 25, 2016
    Inventors: Ji Hee KIM, Hang Ah PARK, Sang Jun LEE, Hye Won JEONG, Jung Hyoung LEE, Bo Ra SHIN, Mi Ra IM
  • Patent number: 9182624
    Abstract: The present application relates to a liquid crystal cell, a method for preparing a liquid crystal cell and a display device. An exemplary liquid crystal cell may be applied to various types of display devices so as to control a viewing angle or light transmittance of the display device.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: November 10, 2015
    Assignee: LG CHEM, LTD.
    Inventors: Sung Joon Min, Dong Hyun Oh, Jun Won Chang, Kyung Jun Kim, Hye Won Jeong, Moon Soo Park
  • Publication number: 20150239210
    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: Application
    Filed: April 8, 2014
    Publication date: August 27, 2015
    Applicant: 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: 20150232621
    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 having a similarity score not greater than 0.5, as calculated by Equation 1 defined in the detailed description, between a carrier substrate and a flexible substrate. 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: Application
    Filed: April 8, 2014
    Publication date: August 20, 2015
    Applicant: 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