Patents by Inventor Joon-ik Lee

Joon-ik 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: 20260173714
    Abstract: A display device includes a display panel including a first area including a display area, a second area, and a bending area disposed between the first area and the second area in an unfolded state, a metal plate disposed under the display panel in the first area, directly contacting the display panel, and at least partially protruding from the first area to the bending area in a plan view, a protective film disposed under the display panel in the second area and protruding from the second area to the bending area further than the metal plate protrudes from the first area to the bending area when the display panel is in a bent state in the plan view, and a filler material disposed under the display panel in the bending area and filling a space between the metal plate and the protective film
    Type: Application
    Filed: July 31, 2025
    Publication date: June 18, 2026
    Inventors: EUNWON SEO, JOON-IK LEE, SIWOONG LEE, JUNHEE SON, HAENGWON PARK, BYOUNG DAE YE
  • Patent number: 12656833
    Abstract: A display device includes a display module and a plurality of support bars disposed on the display module and spaced apart from each other by a gap. Each of the plurality of support bars includes a body including a first surface in contact with the display module, a second surface opposite to the first surface, and a third surface and a fourth surface that connect the first surface and the second surface and that are opposite to each other and being inclined from the first surface and the second surface, and a magnet disposed on the third surface or the fourth surface. Magnets of adjacent support bars of the plurality of support bars are disposed to generate a repulsive force therebetween.
    Type: Grant
    Filed: June 6, 2023
    Date of Patent: June 16, 2026
    Assignee: Samsung Display Co., Ltd.
    Inventors: Eunwon Seo, Joon-Ik Lee
  • Patent number: 12602085
    Abstract: A display device includes a display module, an extension module that is disposed under the display module and that extends and retracts in a first direction, a main case that accommodates the extension module, and a plurality of sidewall cases that are spaced apart from each other in a second direction intersecting the first direction and that move in the first direction relative to the main case. The plurality of sidewall cases move in a third direction intersecting a plane defined by the first and second directions.
    Type: Grant
    Filed: June 1, 2023
    Date of Patent: April 14, 2026
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byoung Jin Jin, Joon-Ik Lee, Mansoo Kim
  • Patent number: 12581005
    Abstract: A display device includes a display panel including non-folding regions and a folding region disposed between the non-folding regions and a lower member disposed under the display panel. The lower member includes a base part including a plurality of portions having different flexural moduli and support lines that are disposed inside the base part and that intersect each other in a plan view and define openings.
    Type: Grant
    Filed: July 28, 2023
    Date of Patent: March 17, 2026
    Assignee: Samsung Display Co., Ltd.
    Inventors: Eunwon Seo, Joon-Ik Lee
  • Publication number: 20260072477
    Abstract: A manufacturing method of a display device includes preparing a display module including a display part, a bending part adjacent to the display part, and a pad part adjacent to the bending part, coupling a lower protective film including a polyimide film to a lower portion of the display module, coupling a window to an upper portion of the display module, removing a portion of the lower protective film corresponding to the display part and the bending part after the coupling of the window to the upper portion of the display module, and coupling a lower protective member corresponding to the display part and including a material different from a material of the lower protective film to the lower portion of the display module.
    Type: Application
    Filed: November 13, 2025
    Publication date: March 12, 2026
    Applicant: Samsung Display Co., Ltd.
    Inventors: Eunwon SEO, Joon-Ik LEE
  • Patent number: 12575045
    Abstract: A display device includes a display module, a support plate disposed under the display module and including a plate and a plurality of support bars arranged in a first direction with the plate, a moving plate disposed under the plate and coupled to the support bars, an expansion module disposed between the plate and the moving plate and movable in the first direction, a main case disposed under the moving plate and accommodating the moving plate and the expansion module, and a sliding hinge disposed between the main case and the moving plate.
    Type: Grant
    Filed: May 19, 2023
    Date of Patent: March 10, 2026
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byoung Jin Jin, Joon-Ik Lee, Mansoo Kim
  • Patent number: 12524045
    Abstract: A manufacturing method of a display device includes preparing a display module including a display part, a bending part adjacent to the display part, and a pad part adjacent to the bending part, coupling a lower protective film including a polyimide film to a lower portion of the display module, coupling a window to an upper portion of the display module, removing a portion of the lower protective film corresponding to the display part and the bending part after the coupling of the window to the upper portion of the display module, and coupling a lower protective member corresponding to the display part and including a material different from a material of the lower protective film to the lower portion of the display module.
    Type: Grant
    Filed: June 8, 2023
    Date of Patent: January 13, 2026
    Assignee: Samsung Display Co., LTD
    Inventors: Eunwon Seo, Joon-Ik Lee
  • Patent number: 12477895
    Abstract: A display device including a display panel including a front portion and a corner portion disposed at a corner of the front portion, a patterned film disposed on a rear surface of the display panel, a cover panel disposed on the rear surface of the patterned film and overlapping the front portion, and a coating layer disposed on the rear surface of the patterned film and overlapping the corner portion.
    Type: Grant
    Filed: October 21, 2022
    Date of Patent: November 18, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Kyung Yun, Cheul Jin Park, Kisang Yoo, Joon-Ik Lee
  • Patent number: 12444332
    Abstract: A display device includes a display panel including: a bending region bent along an axis extending in a first direction; a window disposed on the first surface of the display panel; and a mark disposed on the bending region of the display panel and disposed along a second direction different from the first direction, wherein a first portion of the mark and a second portion of the mark different from the first portion do not overlap along the first direction of the display panel on which the window is disposed.
    Type: Grant
    Filed: November 23, 2021
    Date of Patent: October 14, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Joon-Ik Lee, Dong Hyeon Lee, Chang Moo Lee
  • Publication number: 20250234749
    Abstract: A display device includes a display panel for providing an image, a light control member disposed on the display panel, and a plate disposed under the display panel. The plate includes a first sheet, and second sheets disposed spaced apart from each other on the first sheet, and holes which are spaced apart from each other pass through each of the second sheets.
    Type: Application
    Filed: November 22, 2024
    Publication date: July 17, 2025
    Inventors: EUNWON SEO, JOON-IK LEE, CHEULJIN PARK
  • Publication number: 20250185191
    Abstract: A display device includes a display module having flexibility, a metal plate under the display module and patterned, and a support plate under the metal plate and including a base part, and support bars surrounded by the base part and extending in a direction parallel to the display module.
    Type: Application
    Filed: November 13, 2024
    Publication date: June 5, 2025
    Inventors: EUNWON SEO, JOON-IK LEE, CHEULJIN PARK
  • Publication number: 20240236220
    Abstract: A display device includes a display panel including non-folding regions and a folding region disposed between the non-folding regions and a lower member disposed under the display panel. The lower member includes a base part including a plurality of portions having different flexural moduli and support lines that are disposed inside the base part and that intersect each other in a plan view and define openings.
    Type: Application
    Filed: July 28, 2023
    Publication date: July 11, 2024
    Applicant: Samsung Display Co., Ltd.
    Inventors: EUNWON SEO, JOON-IK LEE
  • Publication number: 20240137433
    Abstract: A display device includes a display panel including non-folding regions and a folding region disposed between the non-folding regions and a lower member disposed under the display panel. The lower member includes a base part including a plurality of portions having different flexural moduli and support lines that are disposed inside the base part and that intersect each other in a plan view and define openings.
    Type: Application
    Filed: July 27, 2023
    Publication date: April 25, 2024
    Applicant: Samsung Display Co., Ltd.
    Inventors: EUNWON SEO, JOON-IK LEE
  • Publication number: 20240103581
    Abstract: A display device includes a display module, an extension module that is disposed under the display module and that extends and retracts in a first direction, a main case that accommodates the extension module, and a plurality of sidewall cases that are spaced apart from each other in a second direction intersecting the first direction and that move in the first direction relative to the main case. The plurality of sidewall cases move in a third direction intersecting a plane defined by the first and second directions.
    Type: Application
    Filed: June 1, 2023
    Publication date: March 28, 2024
    Applicant: Samsung Display Co., Ltd.
    Inventors: BYOUNG JIN JIN, JOON-IK LEE, MANSOO KIM
  • Publication number: 20240107692
    Abstract: A display device includes a display module, a support plate disposed under the display module and including a plate and a plurality of support bars arranged in a first direction with the plate, a moving plate disposed under the plate and coupled to the support bars, an expansion module disposed between the plate and the moving plate and movable in the first direction, a main case disposed under the moving plate and accommodating the moving plate and the expansion module, and a sliding hinge disposed between the main case and the moving plate.
    Type: Application
    Filed: May 19, 2023
    Publication date: March 28, 2024
    Applicant: Samsung Display Co., Ltd.
    Inventors: BYOUNG JIN JIN, JOON-IK LEE, MANSOO KIM
  • Publication number: 20240103582
    Abstract: A manufacturing method of a display device includes preparing a display module including a display part, a bending part adjacent to the display part, and a pad part adjacent to the bending part, coupling a lower protective film including a polyimide film to a lower portion of the display module, coupling a window to an upper portion of the display module, removing a portion of the lower protective film corresponding to the display part and the bending part after the coupling of the window to the upper portion of the display module, and coupling a lower protective member corresponding to the display part and including a material different from a material of the lower protective film to the lower portion of the display module.
    Type: Application
    Filed: June 8, 2023
    Publication date: March 28, 2024
    Applicant: Samsung Display Co., Ltd.
    Inventors: EUNWON SEO, JOON-IK LEE
  • Publication number: 20240094778
    Abstract: A display device includes a display module and a plurality of support bars disposed on the display module and spaced apart from each other by a gap. Each of the plurality of support bars includes a body including a first surface in contact with the display module, a second surface opposite to the first surface, and a third surface and a fourth surface that connect the first surface and the second surface and that are opposite to each other and being inclined from the first surface and the second surface, and a magnet disposed on the third surface or the fourth surface. Magnets of adjacent support bars of the plurality of support bars are disposed to generate a repulsive force therebetween.
    Type: Application
    Filed: June 6, 2023
    Publication date: March 21, 2024
    Applicant: Samsung Display Co., Ltd.
    Inventors: EUNWON SEO, JOON-IK LEE
  • Patent number: 11778756
    Abstract: A display device includes a display panel and a panel protective layer. The display panel has a first area and a second area. The first area is parallel to a plane including a first direction crossing a second direction. The second area extends from the first area and includes: a first part adjacent to the first area in the second direction, a second part extending from the first part and in a bent state, and a third part extending from the second part and disposed below the first part. The panel protective layer is between the first part and the third part. A distance between the first part and the third part decreases from an end of the third part toward the second part along the second direction.
    Type: Grant
    Filed: April 29, 2021
    Date of Patent: October 3, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Joon-Ik Lee
  • Publication number: 20220262279
    Abstract: A display device includes a display panel including: a bending region bent along an axis extending in a first direction; a window disposed on the first surface of the display panel; and a mark disposed on the bending region of the display panel and disposed along a second direction different from the first direction, wherein a first portion of the mark and a second portion of the mark different from the first portion do not overlap along the first direction of the display panel on which the window is disposed.
    Type: Application
    Filed: November 23, 2021
    Publication date: August 18, 2022
    Inventors: Joon-Ik LEE, Dong Hyeon Lee, Chang Moo Lee
  • Publication number: 20220078925
    Abstract: A display device includes a display panel and a panel protective layer. The display panel has a first area and a second area. The first area is parallel to a plane including a first direction crossing a second direction. The second area extends from the first area and includes: a first part adjacent to the first area in the second direction, a second part extending from the first part and in a bent state, and a third part extending from the second part and disposed below the first part. The panel protective layer is between the first part and the third part. A distance between the first part and the third part decreases from an end of the third part toward the second part along the second direction.
    Type: Application
    Filed: April 29, 2021
    Publication date: March 10, 2022
    Inventor: JOON-IK LEE