Patents by Inventor Tea Joo Ha

Tea Joo Ha 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: 20240140072
    Abstract: Disclosed is a glass-based flexible cover window with improved strength and surface hardness comprising a planar portion formed so as to correspond to a planar region of a flexible display and a folding portion formed so as to be connected to the planar portion, the folding portion being formed so as to correspond to a folding region of the flexible display, wherein the flexible cover window includes a flat glass substrate or a glass substrate having an embossed or engraved uneven pattern formed thereat, an adhesive buffer layer formed at a front surface of the glass substrate, a protective film layer formed on the adhesive buffer layer, and a hard coating layer formed on the protective film layer, and the adhesive buffer layer and the protective film layer are alternately stacked at least n times (where n is a natural number equal to or greater than 1).
    Type: Application
    Filed: October 23, 2023
    Publication date: May 2, 2024
    Applicant: UTI INC.
    Inventors: Kukhyun SUNWOO, Tea Joo HA, Jae Suk OH
  • Patent number: 11957130
    Abstract: Disclosed is an antibacterial flexible cover window formed using an antibacterial coating composition containing antibacterial nanoparticles dispersed in a resin coating solution. In the antibacterial coating composition, 0.001 to 0.5 parts by weight of the antibacterial nanoparticles are dispersed in 100 parts by weight of the resin coating solution. The antibacterial flexible cover window includes an antibacterial layer that is formed by applying the antibacterial coating composition to a glass substrate. Therefore, the antibacterial flexible cover window exhibits a good and long-lasting antibacterial activity.
    Type: Grant
    Filed: September 3, 2021
    Date of Patent: April 16, 2024
    Assignee: UTI INC.
    Inventors: Kukhyun Sunwoo, Tea Joo Ha, Jae Suk Oh, Jung Cheol Noh
  • Patent number: 11780771
    Abstract: Proposed is a flexible cover window having a folding part, the cover window being a glass-based cover window for a flexible display and including: a plane part provided by corresponding to a plane area of the display, and a folding part provided by continuing to the plane part, by corresponding to a folding area of the display, and by being slimmed to be thinner than the plane part, wherein a depth of layer (DOL) of the plane part is larger than a depth of layer (DOL) of the folding part.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: October 10, 2023
    Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Kukhyun Sunwoo, Tea Joo Ha
  • Patent number: 11781371
    Abstract: Proposed is a flexible cover window for a flexible display, the flexible cover window including: a first window made of glass and provided on an upper part of a first surface of the flexible display; a second window made of glass and provided on an upper part of a second surface of the flexible display; and a folding part provided between the first window and the second window by corresponding to a folding area of the display and filled with a transparent resin material, wherein a transparent resin layer is provided on a total surface of each of the first window and the second window by continuing to the folding part filled with the transparent resin material, and a chamfer part is provided on each of an end part of the first window and an end part of the second window, which are adjacent to the folding part.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: October 10, 2023
    Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Kukhyun Sunwoo, Tea Joo Ha
  • Patent number: 11765847
    Abstract: Disclosed are a flexible cover window and a method of manufacturing the same. A glass-based flexible cover window includes planar portions formed so as to correspond to planar regions of a flexible display and a folding portion formed so as to be connected to the planar portions, the folding portion being formed so as to correspond to a folding region of the flexible display, wherein the folding portion including a shock compensation pattern unit, and the shock compensation pattern unit has cylindrical patterns.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: September 19, 2023
    Inventors: Kukhyun Sunwoo, Tea Joo Ha, Jong In Park, Jung Seok Woo
  • Publication number: 20230269896
    Abstract: Proposed are a hybrid flexible cover window and a method of manufacturing the same. The hybrid flexible cover window includes a flat portion formed on a flat area of a flexible display and a folding portion which is formed in succession to the flat portion and formed in a folding area of the flexible display. The hybrid flexible cover window includes a substrate, a transparent polyimide layer formed on the glass substrate, and an adhesive buffer layer formed between the glass substrate and the TPI layer, in which the TPI layer has a UV cut-off wavelength of less than 380 nm.
    Type: Application
    Filed: February 8, 2023
    Publication date: August 24, 2023
    Applicant: UTI INC.
    Inventors: Kukhyun SUNWOO, Tea Joo HA, Hee Jun AHN, Seok Pil JIN, Jae Suk OH, Joo Seok LEE
  • Patent number: 11678452
    Abstract: A cover window is provided, and more particularly, a flexible glass-based cover window for a flexible display is provided, the cover window including: a folding part slimmed by corresponding to a folding area of the display, and a boundary part provided on opposite ends of the folding part, the boundary part having a thickness gradually becoming larger from the folding part and continuing to a plane area of the cover window, wherein inclination of the boundary part is 1 to 10° relative to the folding part.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: June 13, 2023
    Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Kukhyun Sunwoo, Tea Joo Ha
  • Patent number: 11644600
    Abstract: Proposed is a flexible cover window including a window substrate and an elastic buffer layer having a single-layer structure or a multi-layer structure. The elastic buffer layer is provided on the rear surface of the window substrate to absorb deformation occurring in a folding part. The flexible cover window is a glass-based cover window for protecting a flexible display that is foldable, rollable, slidable, or stretchable. In addition, the flexible cover window has an elastic buffer layer on the rear surface of the window substrate to reduce the difference in elongation between the window substrate and a display panel so that delamination or buckling due to micro-deformation at the folding part thereof can be prevented. Therefore, the life span of the flexible cover window is prolonged and distortion of an image on the screen at the folding part can be prevented.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: May 9, 2023
    Inventors: Jae Young Hwang, Kukhyun Sunwoo, Tea Joo Ha
  • Patent number: 11647644
    Abstract: Disclosed are a rollable, slidable, and stretchable cover window and a method of manufacturing the same. The rollable, slidable, and stretchable cover window includes a planar portion formed so as to correspond to a planar region of a rollable, slidable, and stretchable display and a flexible portion formed so as to be connected to the planar portion, the flexible portion being formed so as to correspond to a flexible region of the rollable, slidable, and stretchable display, wherein the rollable, slidable, and stretchable cover window includes a glass substrate and a shock compensation pattern unit formed on the glass substrate, and the shock compensation pattern unit is formed at the flexible portion or is formed at each of the planar portion and the flexible portion, the shock compensation pattern unit having concave-convex-shaped patterns.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: May 9, 2023
    Inventors: Kukhyun Sunwoo, Tea Joo Ha, Jong In Park
  • Patent number: 11643361
    Abstract: The present invention provides a method of increasing the strength of a glass substrate for optical filters and a tempered-glass optical filter using a tempered glass substrate manufactured using the same, in which the glass substrate for optical filters is subjected to chemical tempering so that a compressive stress (CS) and a depth of layer (DOL) of the glass substrate are adjusted to increase the bending strength thereof.
    Type: Grant
    Filed: December 24, 2019
    Date of Patent: May 9, 2023
    Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Hack Seon Kim, Tea Joo Ha
  • Patent number: 11627679
    Abstract: Disclosed are a flexible cover window and a method of manufacturing the same. A glass-based flexible cover window includes planar portions formed so as to correspond to planar regions of a flexible display and a folding portion formed so as to be connected to the planar portions, the folding portion being formed so as to correspond to a folding region of the flexible display, the folding portion having a smaller thickness than each of the planar portions, wherein the flexible cover window includes a glass substrate and a shock compensation pattern unit formed on the glass substrate, the shock compensation pattern unit is formed at each of the planar portions and the folding portion, and the shock compensation pattern unit has cylindrical patterns.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: April 11, 2023
    Inventors: Kukhyun Sunwoo, Tea Joo Ha, Jong In Park, Jung Seok Woo
  • Publication number: 20230044519
    Abstract: Disclosed is a glass-based flexible cover window with improved strength including a planar portion formed so as to correspond to a planar region of a flexible display and a folding portion formed so as to be connected to the planar portion, the folding portion being formed so as to correspond to a folding region of the flexible display, wherein the flexible cover window includes a glass substrate and a polyimide (PI) coating layer formed on the glass substrate. The PI coating layer is formed on the glass substrate by direct coating, whereby inherent texture of glass is maintained while the overall thickness of the flexible cover window is reduced, and therefore aesthetics of the flexible cover window are improved.
    Type: Application
    Filed: August 1, 2022
    Publication date: February 9, 2023
    Applicant: UTI INC.
    Inventors: Kukhyun SUNWOO, Tea Joo HA, Jae Suk OH
  • Publication number: 20230045063
    Abstract: Disclosed is a glass-based flexible cover window with improved strength including a planar portion formed so as to correspond to a planar region of a flexible display and a folding portion formed so as to be connected to the planar portion, the folding portion being formed so as to correspond to a folding region of the flexible display, wherein the flexible cover window includes a glass substrate, an adhesive buffer layer formed on the glass substrate, a protective film layer formed on the adhesive buffer layer, and a hard coating layer formed on the protective film layer. The protective film layer is formed on the glass substrate, whereby strength and folding characteristics of the flexible cover window are improved, and inherent texture of glass is maintained while the overall thickness of the flexible cover window is reduced, and therefore aesthetics of the flexible cover window are improved.
    Type: Application
    Filed: August 1, 2022
    Publication date: February 9, 2023
    Applicant: UTI INC.
    Inventors: Kukhyun SUNWOO, Tea Joo HA, Jae Suk OH
  • Publication number: 20220263043
    Abstract: Disclosed are a rollable, slidable, and stretchable cover window and a method of manufacturing the same. The rollable, slidable, and stretchable cover window includes a planar portion formed so as to correspond to a planar region of a rollable, slidable, and stretchable display and a flexible portion formed so as to be connected to the planar portion, the flexible portion being formed so as to correspond to a flexible region of the rollable, slidable, and stretchable display, wherein the rollable, slidable, and stretchable cover window includes a glass substrate and a shock compensation pattern unit formed on the glass substrate, and the shock compensation pattern unit is formed at the flexible portion or is formed at each of the planar portion and the flexible portion, the shock compensation pattern unit having concave-convex-shaped patterns.
    Type: Application
    Filed: March 23, 2021
    Publication date: August 18, 2022
    Applicant: UTI INC.
    Inventors: Kukhyun SUNWOO, Tea Joo HA, Jong In PARK
  • Publication number: 20220236457
    Abstract: Proposed is a flexible cover window including a window substrate and an elastic buffer layer having a single-layer structure or a multi-layer structure. The elastic buffer layer is provided on the rear surface of the window substrate to absorb deformation occurring in a folding part. The flexible cover window is a glass-based cover window for protecting a flexible display that is foldable, rollable, slidable, or stretchable. In addition, the flexible cover window has an elastic buffer layer on the rear surface of the window substrate to reduce the difference in elongation between the window substrate and a display panel so that delamination or buckling due to micro-deformation at the folding part thereof can be prevented. Therefore, the life span of the flexible cover window is prolonged and distortion of an image on the screen at the folding part can be prevented.
    Type: Application
    Filed: January 20, 2022
    Publication date: July 28, 2022
    Applicant: UTI INC.
    Inventors: Jae Young HWANG, Kukhyun SUNWOO, Tea Joo HA
  • Publication number: 20220195235
    Abstract: Proposed are a coating resin composition for a flexible cover window and a flexible cover window formed using the same composition. The coating resin composition, includes, relative to the total weight thereof, 10 to 150 parts by weight of a urethane (meth)acrylate-based oligomer prepared by synthesizing an acrylic monomer containing a hydroxyl group with a urethane prepolymer synthesized from an ether-based polyol, diisocyanate, and polyoxyalkylene-based bisphenol ether, 1 to 60 parts by weight of a first photocurable acrylate-based monomer, 0.5 to 10 parts by weight of a second photocurable acrylate-based monomer, 0.5 to 10 parts by weight of an alkoxy silane coupling agent, 0.1 to 5 parts by weight of a siloxane additive, and to 20 parts by weight of a photopolymerization initiator.
    Type: Application
    Filed: December 17, 2021
    Publication date: June 23, 2022
    Applicant: UTI INC.
    Inventors: Kukhyun SUNWOO, Hak Chul Kim, Tea Joo Ha, Jae Suk Oh, Jung Cheol Noh
  • Publication number: 20220194848
    Abstract: Proposed is a flexible cover window manufacturing method capable of simultaneously reinforcing a plane part and a folding part by using alkali-based metal ions having an ionic radius smaller than that of alkali-based metal ions contained in a glass. A flexible cover window manufactured using the same method is also proposed. The plane part and the folding part are simultaneously reinforced using alkali-based metal ions having a smaller ionic radius than alkali-based metal ions included in a glass to simplify the process, and the flexible cover window ensures strength and folding characteristics by controlling tensile stress of the entire part of the flexible cover window.
    Type: Application
    Filed: December 16, 2021
    Publication date: June 23, 2022
    Applicant: UTI INC.
    Inventors: Deok Young Park, Jae Young Hwang, Kukhyun Sunwoo, Tea Joo Ha
  • Publication number: 20220135473
    Abstract: Proposed are a flexible cover window for simultaneously improving strength characteristics and folding characteristics of a glass-based ultra-thin flexible cover window, and a method of manufacturing the same. A glass-based flexible cover window is configured such that a ratio of the intensity of replacing metal ions at the glass center to the intensity of replacing metal ions at the glass surface is 1:3 or greater. The present disclosure can provide a flexible cover window with improved window strength characteristics and folding characteristics by adjusting the depth (ion penetration depth) and the surface compressive stress of a tempered layer by performing a gradient tempering process including primary tempering, slimming, and secondary tempering.
    Type: Application
    Filed: October 25, 2021
    Publication date: May 5, 2022
    Applicant: UTI INC.
    Inventors: Kukhyun SUNWOO, Tea Joo HA, Jun Su CHOI, Yoon Jin CHOI
  • Patent number: 11320866
    Abstract: The present disclosure provides a flexible cover window comprising at least one flat portion corresponding to flat areas of a flexible display and a folding portion corresponding to a folding area of the flexible display and formed to be connected to the at least one flat portion, wherein the flexible cover window is made from a glass substrate having a pattern layer for impact dispersion thereon, wherein the pattern layer for impact dispersion is formed on the flat portion and the folding portion, and the height of the pattern layer is less than half of the thickness of the glass substrate.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: May 3, 2022
    Inventors: Kukhyun Sunwoo, Hak Chui Kim, Tea Joo Ha
  • Patent number: 11322054
    Abstract: A cover window is proposed. Particularly, a flexible cover window having improved visibility for a flexible display is proposed, the flexible cover window including: a first window made of glass and provided on an upper part of a first surface of the flexible display; a second window made of glass and provided on an upper part of a second surface of the flexible display; and a folding part provided between the first window and the second window by corresponding to a folding area of the display and filled with a transparent resin material, wherein a transparent resin layer is provided on a total surface of each of the first window and the second window by continuing to the folding part filled with the transparent resin material.
    Type: Grant
    Filed: April 23, 2020
    Date of Patent: May 3, 2022
    Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Kukhyun Sunwoo, Tea Joo Ha