Patents by Inventor Hoi Kwan Lee

Hoi Kwan Lee 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: 20250081829
    Abstract: The present disclosure relates to a display device, and more particularly, to a display device capable of preventing a flow of resin for window manufacture, and a method for fabrication thereof. According to an embodiment of the disclosure, a display device comprises a display panel, a polarization plate disposed on the display panel and having a through hole, a hole cover disposed on the polarization plate to cover the through hole of the polarization plate, a light blocking layer disposed on the hole cover and the polarization plate, and a window on the polarization plate, the hole cover, and the light blocking layer. At least a portion of the light blocking layer is disposed between the hole cover and the window.
    Type: Application
    Filed: May 15, 2024
    Publication date: March 6, 2025
    Inventors: Sang Duk LEE, Hoi Kwan LEE
  • Patent number: 12215055
    Abstract: A strengthened glass manufacturing apparatus and a strengthened glass manufacturing method are provided. The strengthened glass manufacturing apparatus includes a strengthening chamber including a first chamber having a first space, a preheating chamber including a second chamber having a second space, the second space being different from the first space, and a first induction coil in the preheating chamber.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: February 4, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventor: Hoi Kwan Lee
  • Publication number: 20250031557
    Abstract: A display device according to an embodiment of the disclosure includes a panel; a camera that does not overlap the panel in a plan view; a polarization layer disposed on the panel; a transmission layer extending to at least a portion of the polarization layer; and a coating layer having a larger area than the panel and disposed over the polarization layer and the transmission layer, wherein the transmission layer overlaps the camera in a plan view.
    Type: Application
    Filed: May 7, 2024
    Publication date: January 23, 2025
    Applicant: Samsung Display Co., LTD.
    Inventors: Sang Duk LEE, Hoi Kwan LEE
  • Publication number: 20250015825
    Abstract: A cover window, a manufacturing method of a cover window, and a display device including a cover window are provided. A cover window includes a folding portion and a non-folding portion, and the folding portion includes an inside surface that is compressed when folded and an outside surface that is stretched when folded, the folding portion includes a first layer adjacent to the outside surface, a second layer adjacent to the inside surface, and a third layer between the first layer and the second layer, the folding portion and the non-folding portion include at least one metal ion, a concentration of the metal ion included in the second layer is higher than a concentration of the metal ion included in the first layer, and the first layer includes a plurality of depletion regions.
    Type: Application
    Filed: September 16, 2024
    Publication date: January 9, 2025
    Inventors: Byung Hoon KANG, Byeong-Beom KIM, Seung Ho KIM, Cheol Min PARK, Chang Moo LEE, Hoi Kwan LEE
  • Patent number: 12119859
    Abstract: A cover window, a manufacturing method of a cover window, and a display device including a cover window are provided. A cover window includes a folding portion and a non-folding portion, and the folding portion includes an inside surface that is compressed when folded and an outside surface that is stretched when folded, the folding portion includes a first layer adjacent to the outside surface, a second layer adjacent to the inside surface, and a third layer between the first layer and the second layer, the folding portion and the non-folding portion include at least one metal ion, a concentration of the metal ion included in the second layer is higher than a concentration of the metal ion included in the first layer, and the first layer includes a plurality of depletion regions.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: October 15, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byung Hoon Kang, Byeong-Beom Kim, Seung Ho Kim, Cheol Min Park, Chang Moo Lee, Hoi Kwan Lee
  • Publication number: 20240281036
    Abstract: A display device includes a display panel having a display area and a non-display area, a polarization layer on a first surface of the display panel and covering the display area and a portion of the non-display area adjacent to the display area, and a window directly on the polarization layer and covering the display area and the portion of the non-display area adjacent to the display area, the window including a curved portion on the portion of the non-display area.
    Type: Application
    Filed: September 18, 2023
    Publication date: August 22, 2024
    Inventors: Yun Young LEE, Eun Kyung YEON, Jung Kyu LEE, Hoi Kwan LEE
  • Publication number: 20240174560
    Abstract: A glass substrate chemical strengthening furnace apparatus includes a bottom portion and a side wall extending from an edge of the bottom portion, where the bottom portion and the side wall define a reaction space; and a plurality of heaters providing heat to the reaction space. The bottom portion includes an inclined portion located at a center and a collection portion disposed between the inclined portion and the side wall, the collection portion is in a groove shape in which an upper surface thereof is further recessed than the inclined portion, and the plurality of heaters includes a bottom heater disposed in the bottom portion or adjacent to the bottom portion.
    Type: Application
    Filed: February 7, 2024
    Publication date: May 30, 2024
    Inventor: Hoi Kwan LEE
  • Patent number: 11952309
    Abstract: A glass substrate chemical strengthening furnace apparatus includes a bottom portion and a side wall extending from an edge of the bottom portion, where the bottom portion and the side wall define a reaction space; and a plurality of heaters providing heat to the reaction space. The bottom portion includes an inclined portion located at a center and a collection portion disposed between the inclined portion and the side wall, the collection portion is in a groove shape in which an upper surface thereof is further recessed than the inclined portion, and the plurality of heaters includes a bottom heater disposed in the bottom portion or adjacent to the bottom portion.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: April 9, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hoi Kwan Lee
  • Publication number: 20230382788
    Abstract: A glass article includes a first surface, a second surface which is opposite the first surface, a first compressive region which extends to a first compression depth in a thickness direction from the first surface, a second compressive region which extends to a second compression depth from the second surface, and a tensile region which is disposed between the first compressive region and the second compressive region. A stress profile of the first compressive region includes a first point and a first inflection point, the first inflection point is located between the first point and the first surface, a depth from the first surface to the first point is 45 to 55% of the first compression depth from the first surface, stress at the first point is greater than 50% of compressive stress of the first surface, and a thickness of the glass article is 0.01 to 0.05 mm.
    Type: Application
    Filed: August 3, 2023
    Publication date: November 30, 2023
    Inventor: Hoi Kwan LEE
  • Publication number: 20230303435
    Abstract: A method for producing a glass article is provided. The method for producing a glass article, the method including preparing a glass to be processed, the glass comprising a glass bulk and a low-refractive surface layer disposed on the glass bulk, and etching away the low-refractive surface layer to form an etched glass, wherein the etching away the low-refractive surface layer comprises: cleaning the low-refractive surface layer with an acid solution; and cleaning the low-refractive surface layer with a base solution after the cleaning it with the acid solution.
    Type: Application
    Filed: June 5, 2023
    Publication date: September 28, 2023
    Inventors: Hoi Kwan LEE, Sung Hoon KIM, Seung Ho KIM, Sook Kyung YOU, An Na RYU, Jeong Seok LEE
  • Patent number: 11760688
    Abstract: A glass article includes a first surface, a second surface which is opposite the first surface, a first compressive region which extends to a first compression depth in a thickness direction from the first surface, a second compressive region which extends to a second compression depth from the second surface, and a tensile region which is disposed between the first compressive region and the second compressive region. A stress profile of the first compressive region includes a first point and a first inflection point, the first inflection point is located between the first point and the first surface, a depth from the first surface to the first point is 45 to 55% of the first compression depth from the first surface, stress at the first point is greater than 50% of compressive stress of the first surface, and a thickness of the glass article is 0.01 to 0.05 mm.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: September 19, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hoi Kwan Lee
  • Patent number: 11737226
    Abstract: A window substrate for protecting an electronic display device, the window substrate includes: a first substrate; a second substrate; and an interlayer having opposed sides disposed between the first substrate and the second substrate, with one side of the interlayer being in contact with the first substrate, and the other side of the interlayer being in contact with the second substrate, wherein the first substrate has a first thickness, the second substrate has a second thickness, and the interlayer has a third thickness, and wherein the sum of the first thickness, the second thickness, and the third thickness is about 190 ?m or less.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: August 22, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong Hoon Yeum, Seung Kim, Hoi Kwan Lee, Seung Ho Kim
  • Patent number: 11708301
    Abstract: A method for producing a glass article is provided. The method for producing a glass article, the method including preparing a glass to be processed, the glass comprising a glass bulk and a low-refractive surface layer disposed on the glass bulk, and etching away the low-refractive surface layer to form an etched glass, wherein the etching away the low-refractive surface layer comprises: cleaning the low-refractive surface layer with an acid solution; and cleaning the low-refractive surface layer with a base solution after the cleaning it with the acid solution.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: July 25, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hoi Kwan Lee, Sung Hoon Kim, Seung Ho Kim, Sook Kyung You, An Na Ryu, Jeong Seok Lee
  • Publication number: 20230202916
    Abstract: A glass substrate has a first surface, a second surface opposite to the first surface, and a thickness from the first surface to the second surface. The glass substrate includes a first region, a second region, and a third region. The first region extends from the first surface a first depth into the glass substrate and has a first compressive stress. The second region extends from the second surface a second depth into the glass substrate and has a second compressive stress different from the first compressive stress. The third region is between the first region and the second region. In the glass substrate, the first compressive stress has a maximum value at a location between the first surface and the first depth, and the second compressive stress has a maximum value at a location between the second surface and the second depth.
    Type: Application
    Filed: February 28, 2023
    Publication date: June 29, 2023
    Inventors: Hoi Kwan Lee, Myung Hwan Kim, Seung Kim, Seung Ho Kim, Eun Kyung Yeon, Jeong Seok Lee, Ik Hyung Park, Jong Hoon Yeum
  • Publication number: 20230184647
    Abstract: A glass strength evaluation apparatus includes a support unit, a plate disposed on the support unit and including a surface on which a glass article, which is a target to be tested, is disposed, a fixing jig disposed on the plate and a power unit lifting up or down the fixing jig in a vertical direction toward the surface of the plate. The fixing jig includes a body portion, which extends in the vertical direction and lower fixing bolts. A press-fitting member insertion opening is recessed from a bottom of the body portion to extend in an upward direction, lower fixing bolt insertion holes penetrate the body portion, from one side of the body portion, in a first horizontal direction intersecting the vertical direction, to be extended to the press-fitting insertion opening, and lower fixing bolts are coupled into the lower fixing bolt insertion holes.
    Type: Application
    Filed: July 22, 2022
    Publication date: June 15, 2023
    Inventors: So Mi JUNG, Seung KIM, Seung Ho KIM, Hyun Chul BAE, Hui Yeon SHON, Gyu In SHIM, Hoi Kwan LEE
  • Patent number: 11668634
    Abstract: A window drop test apparatus includes a support protruding in a first direction from the prop, and a guide portion that defines a drop space together with the support, where a drop test is performed through the drop space.
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: June 6, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yu Ri Kim, Hoi Kwan Lee, Min Ki Kim, Byeong-Beom Kim
  • Patent number: 11639309
    Abstract: A glass product includes: a first compressive region at a first surface; a second compressive region at a second surface; and a tensile region between the first and second compression regions. A stress profile of the first compressive region includes a first trend line between the first surface and a first transition point, a second trend line between the first transition point and a second transition point, and a third trend line between the second transition point and a point at a first compression depth from the first surface. A depth from the first surface to the first transition point is 10 ?m or less, a stress at the first transition point is 200 MPa or greater, a depth from the first surface to the second transition point is 50 ?m to 80 ?m, and a stress at the second transition point is 40 MPa to 100 MPa.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: May 2, 2023
    Assignee: SAMSUNG DISPLAY CO. LTD.
    Inventors: Byung Hoon Kang, Seung Kim, Gyu In Shim, Hoi Kwan Lee
  • Patent number: 11626572
    Abstract: In a method of fabricating a cover window, the method includes: forming, on a glass article having a flat upper surface, a mask layer including water glass and a recess portion having a partially recessed upper surface; and etching the mask layer and the glass article to form a cover window having a partially recessed upper surface.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: April 11, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byeong Beom Kim, Min Ki Kim, Yu Ri Kim, Hoi Kwan Lee
  • Patent number: 11557641
    Abstract: A display device includes a display panel including panel pads adjacent to the side surface of a display panel; connection pads disposed on the side surface of the display panel and connected to the panel pads; and a circuit board disposed on the side surface of the display panel and including lead signal lines directly bonded to the connection pads, wherein the connection pads include a first connection pad, a second connection pad disposed on the first connection pad, and a third connection pad disposed on the second connection pad, and the first connection pad is in contact with corresponding one of the panel pads, and the third connection pad is directly bonded to corresponding one of the lead signal lines.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: January 17, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Byeong Beom Kim, Min Ki Kim, Yu Ri Kim, Woo Suk Seo, Hoi Kwan Lee
  • Publication number: 20220363592
    Abstract: An embodiment provides a chemical strengthening system, including: a strengthening part in which chemical strengthening of a glass plate is performed; a heating part in which a post-heat treatment of the glass plate is performed; and a cassette in which the glass plate is loaded and which is movable between the strengthening part and the heating part. The cassette includes a lower support which supports a lower end portion of the glass plate, the lower support is rotatable with respect to an axis of rotation, and the axis of rotation does not move relatively within the cassette.
    Type: Application
    Filed: December 22, 2021
    Publication date: November 17, 2022
    Inventors: Hui Yeon SHON, Hyun Ji LEE, Hoi Kwan LEE