Patents by Inventor Seungil Baek

Seungil Baek 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: 12060496
    Abstract: The present disclosure relates to an optical laminate for a flexible display device comprising: a support substrate layer; and a hard coating layer positioned on at least one surface of the support substrate layer and having a thickness of 10 ?m to 250 ?m, wherein the hard coating layer is a polysiloxane containing 70 mol % or more of a repeating unit including an epoxy group-containing functional group; and an elastomeric polymer including polycaprolactone polyol, and wherein the polysiloxane has a number average molecular weight of more than 3,000 and less than 10,000, and a polydispersity Index (PDI) of 1.0 or more and less than 5.0, and a flexible display device including the same.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: August 13, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Eun Seon Lee, Seung Joon Lim, Ha Neul Kim, Seungil Baek, Se Jeong Kim, Myoungseok Cho, Yeongkyu Choi
  • Publication number: 20240059056
    Abstract: The present invention relates to a cover window for a flexible display device of substrate-less type which simultaneously achieves a physical property balance between flexibility and high hardness even without a substrate film, particularly has almost no damage to the film even by repetitive bending or folding operation, and thus, can be easily applied to bendable, flexible, rollable, or foldable mobile devices, display devices, and the like, and a flexible display device including the same.
    Type: Application
    Filed: October 7, 2022
    Publication date: February 22, 2024
    Applicant: LG CHEM, LTD.
    Inventors: Eun Seon LEE, Seung Joon LIM, Yoon Bin LIM, Seungil BAEK, Myoungseok CHO, Yeongkyu CHOI, Gieun PARK
  • Publication number: 20230384834
    Abstract: The present disclosure relates to an optical laminate which hardly has a risk of damaging the film even in repetitive bending or folding operations, and thus can be easily applied to bendable, flexible, rollable or foldable mobile devices, display devices, and the like, to a cover window for flexible display device including the same, and to a flexible display device including the same.
    Type: Application
    Filed: August 23, 2021
    Publication date: November 30, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Gieun PARK, Eun Seon LEE, Seung Joon LIM, Yoon Bin LIM, Seungil BAEK, Se Jeong KIM, Myoungseok CHO, Yeongkyu CHOI
  • Patent number: 11709294
    Abstract: The present disclosure provides an optical laminate which exhibits improved adhesive strength and scratch resistance together with excellent hardness and fingerprint resistance properties, by further including a fingerprint-resistant layer including an organosilane having excellent adhesion strength with the hard coating layer and an anti-fouling function on the hard coating layer including the transparent support substrate layer and the hard coating layer.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: July 25, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Ha Neul Kim, Eun Seon Lee, Seungil Baek, Se Jeong Kim, Woo Han Kim, Yeongkyu Choi
  • Publication number: 20220145129
    Abstract: The present disclosure relates to an optical laminate for a flexible display device comprising: a support substrate layer; and a hard coating layer positioned on at least one surface of the support substrate layer and having a thickness of 10 ?m to 250 ?m, wherein the hard coating layer is a polysiloxane containing 70 mol % or more of a repeating unit including an epoxy group-containing functional group; and an elastomeric polymer including polycaprolactone polyol, and wherein the polysiloxane has a number average molecular weight of more than 3,000 and less than 10,000, and a polydispersity Index (PDI) of 1.0 or more and less than 5.0, and a flexible display device including the same.
    Type: Application
    Filed: August 14, 2020
    Publication date: May 12, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Eun Seon LEE, Seung Joon LIM, Ha Neul KIM, Seungil BAEK, Se Jeong KIM, Myoungseok CHO, Yeongkyu CHOI
  • Publication number: 20210245483
    Abstract: The present disclosure relates to a hard coating laminate having an internal bending property and an external bending property including: a supporting substrate layer containing a thermoplastic resin; and a hard coating layer having a thickness of 50 to 240 ?m, wherein the hard coating layer includes a cured product of a resin composition including a siloxane resin having a predetermined glycidoxypropyl modified silicone structure and an elastomeric polymer.
    Type: Application
    Filed: October 25, 2019
    Publication date: August 12, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Eun Seon LEE, Ha Neul KIM, Seungil BAEK, Woo Han KIM
  • Publication number: 20210115210
    Abstract: Provided is a hard coating film exhibiting improved flexibility and curling properties together with excellent hardness property, the hard coating film including a top coating layer and a bottom coating layer each disposed on the top surface and the bottom surface of a support substrate layer, wherein the top coating layer includes a cured product of a first resin composition containing epoxy polysiloxane of the following Chemical Formula 1, and the bottom coating layer includes a cured product of a second resin composition containing epoxy polysiloxane of the following Chemical Formula 1 and an elastomer at a weight ratio of 95:5 to 60:40: (R1SiO3/2)a(R2SiO3/2)b(OR)c ??[Chemical Formula 1] wherein in Chemical Formula 1, R1, R2, R, a, b, and c are the same as defined in the specification.
    Type: Application
    Filed: April 29, 2019
    Publication date: April 22, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Seungil BAEK, Eun Seon LEE, Ha Neul KIM, Woo Han KIM
  • Publication number: 20210072427
    Abstract: The present disclosure provides an optical laminate which exhibits improved adhesive strength and scratch resistance together with excellent hardness and fingerprint resistance properties, by further including a fingerprint-resistant layer including an organosilane having excellent adhesion strength with the hard coating layer and an anti-fouling function on the hard coating layer including the transparent support substrate layer and the hard coating layer.
    Type: Application
    Filed: November 23, 2020
    Publication date: March 11, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Ha Neul KIM, Eun Seon LEE, Seungil BAEK, Se Jeong KIM, Woo Han KIM, Yeongkyu CHOI
  • Patent number: 10759966
    Abstract: The present disclosure relates to an optical laminate including: a supporting substrate layer; and a hard coating layer located on at least one surface of the supporting substrate layer and including a cured product of a hard coating composition, wherein the hard coating composition includes: a polysiloxane including 70 mol % or more of a structural unit containing a glycidyl group-containing functional group; an elastomer; and a reactive monomer containing at least one functional group capable of cross-linking with the polysiloxane, and the elastomer is contained in an amount of 5 to 80 parts by weight based on 100 parts by weight of the polysiloxane. The present disclosure also relates to a flexible display apparatus including the above optical laminate.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: September 1, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Ha Neul Kim, Eun Seon Lee, Seungil Baek, Woo Han Kim