Patents by Inventor Hyun-Min Cho

Hyun-Min Cho 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: 12342664
    Abstract: A light emitting element having a shape extending in a direction includes a first semiconductor layer and a second semiconductor layer, an active layer between the first and second semiconductor layers, a first electrode layer on a second surface opposite to a first surface of the first semiconductor layer facing the active layer, a second electrode layer on a second surface opposite to a first surface of the second semiconductor layer facing the active layer, and an insulating film surrounding a side surface of the active layer, a side surface of the first electrode layer, and a side surface of the second electrode layer, wherein a first area including the insulating film adjacent to a side surface of the active layer has a thickness larger than a thickness of a second area including the insulating film adjacent to a side surface of the first electrode layer.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: June 24, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Geun Lee, Dong Uk Kim, Dae Hyun Kim, Se Young Kim, Hyun Min Cho, Hyung Rae Cha
  • Patent number: 12324312
    Abstract: A display device may include: a base layer including a display area and a non-display area; and a plurality of pixels provided on the display area, and each including a plurality of sub-pixels. Each of the sub-pixels may include a pixel circuit layer, and a display element layer including an emission area formed to emit light, and a non-emission area provided around a perimeter of the emission area. The display element layer may include: a partition wall provided on the emission area of each of the sub-pixels; a bank provided on the non-emission area of each sub-pixel, and disposed on a surface equal to a surface on which the partition wall is disposed; a first electrode and a second electrode provided on the partition wall and spaced apart from each other; and at least one light emitting element provided between the first and second electrodes in the emission area of each sub-pixel, and configured to emit the light.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: June 3, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dae Hyun Kim, Veidhes Basrur, Xinxing Li, Tae Jin Kong, Hee Keun Lee, Hyun Min Cho, Keun Kyu Song, Jin Oh Kwag
  • Patent number: 12324271
    Abstract: A method of aligning light emitting elements includes applying a ground voltage to a first electrode and applying a first AC voltage to a second electrode spaced apart from the first electrode; and applying a ground voltage to the first electrode and applying a second AC voltage to the second electrode, wherein the first AC voltage has an asymmetric waveform.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: June 3, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong Hyuk Kang, Won Ho Lee, Hyun Deok Im, Jin Oh Kwag, Hyun Min Cho, Won Kyu Kim, Keun Kyu Song
  • Publication number: 20250160140
    Abstract: A display device includes a display panel layer, a light transmission layer disposed on the display panel layer, where a plurality of trenches is defined in the light transmission layer to be recessed in a first direction towards the display panel layer, and a light blocking material filling the plurality of trenches. A profile on a section of each of the plurality of trenches includes a first parallel section, a connection section, and a second parallel section, which are sequentially defined along the first direction. A first width of the profile on the section in a second direction perpendicular to the first direction in the first parallel section is smaller than a second width of the profile on the section in the second direction in the second parallel section.
    Type: Application
    Filed: October 31, 2024
    Publication date: May 15, 2025
    Inventors: Hyun Min CHO, Kyong Chol LEE, Da Woon JUNG, Jae Woo JEONG, Yu Gwang JEONG
  • Patent number: 12300766
    Abstract: A display device includes at least one pixel; at least one electrode spaced apart from each other in each of the at least one pixel; and at least one light-emitting element disposed between the at least one electrode, wherein the at least one electrode include at least one inner electrode disposed adjacent to the center of each of the at least one pixel; and at least one outer electrode spaced apart from each of the at least one inner electrode, a distance between the central portion of the at least one pixel and the at least one outer electrode is greater than a distance between the central portion of the at least one pixel and the inner electrode, and a width of the at least one inner electrode is different from a width of the at least one outer electrode.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: May 13, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Deok Im, Jong Hyuk Kang, Dae Hyun Kim, Won Hee Nam, Ki Sun Jang, Hyun Min Cho
  • Patent number: 12294014
    Abstract: A light emitting device comprises: a substrate; a first electrode on the substrate, the first electrode having holes, and having inclined surfaces along the peripheries of the holes; second electrodes on the substrate, each of which is in a respective one of the holes of the first electrode; and light emitting elements between the first electrode and the second electrodes, the light-emitting elements being electrically connected to the first electrode and the second electrodes.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: May 6, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chong Chul Chai, Hyun Joon Kim, Hyun Min Cho, Kyung Bae Kim, Min Jae Jeong
  • Patent number: 12289940
    Abstract: A display device includes a pixel disposed in a display area; a first line electrically connected to the pixel; and a first control line disposed around the first line. The pixel includes a first electrode and a second electrode spaced apart from each other; at least one intermediate electrode including a first intermediate electrode disposed between the first electrode and the second electrode; light emitting elements electrically connected between a pair of adjacent electrodes among the first electrode, the second electrode, and the at least one intermediate electrode; and a first switching element electrically connected between the first intermediate electrode and the first line, the first switching element being controlled by a signal applied to the first control line.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: April 29, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sin Chul Kang, Su Mi Moon, Jae Woong Kang, Won Sik Oh, Hyun Min Cho
  • Patent number: 12289975
    Abstract: A display device may include a first sub-pixel including a first light emitting element disposed in a first sub-pixel area of a substrate, a second sub-pixel including a second light emitting element disposed in a second sub-pixel area located in a first direction with respect to the first sub-pixel area of the substrate, a bank layer disposed between the first and second sub-pixels, a first color filter pattern disposed on the first sub-pixel and the bank layer, and a second color filter pattern disposed on the second sub-pixel and the bank layer. The first light emitting element may emit light having a first color. The second light emitting element may emit light having a second color. The first color filter pattern and the second color filter pattern may at least partially overlap each other on the bank layer.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: April 29, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae Jin Kong, Hyun Min Cho, Dae Hyun Kim, Su Mi Moon, Xinxing Li, Hee Keun Lee
  • Patent number: 12288833
    Abstract: A display device includes a substrate including a display area and a non-display area; and at least one pixel provided in the display area, and including a pixel circuit layer. The display element layer includes at least one transistor, and a display element layer including at least one light emitting element emitting light, and a first electrode and a second electrode spaced apart from each other, disposed on the substrate, and each extending in a first direction, and the at least one light emitting element is electrically connected to each of the first and the second electrodes. The first electrode has at least two widths in an extension direction of the first electrode. The second electrode has at least two widths in an extension direction of the second electrode.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: April 29, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Eun A Yang, Jong Hyuk Kang, Hyun Deok Im, Hyun Min Cho
  • Publication number: 20250130456
    Abstract: A wide viewing angle liquid crystal display includes color filters having a quantum dot and scattering particles and liquid crystal layer disposed in a microcavity. a distance between the color filter and the liquid crystal layer being sized to minimize display deterioration due to parallax.
    Type: Application
    Filed: December 19, 2024
    Publication date: April 24, 2025
    Inventors: JAE BYUNG PARK, SUNG SIK YUN, JONG HYUK KANG, HAE IL PARK, HYUN MIN CHO
  • Publication number: 20250133922
    Abstract: A display device and method for manufacturing the display device includes, a substrate, a light emitting element layer disposed on the substrate and including at least one light emitting element, and a light control layer disposed on the light emitting element layer, wherein the light control layer includes, a plurality of light blocking films disposed to be spaced apart from each other, at least one bridge connecting at least two of the plurality of light blocking films, and a light transmitting film disposed between the plurality of light blocking films and the bridge.
    Type: Application
    Filed: July 10, 2024
    Publication date: April 24, 2025
    Inventors: Kyong Chol LEE, Yun Jong YEO, Da Woon JUNG, Jae Woo JEONG, Hyun Min CHO
  • Patent number: 12283604
    Abstract: A light-emitting device includes: a substrate; a unit light-emitting area disposed on the substrate; first and second electrodes disposed in the unit light-emitting area to be separated from each other; a plurality of rod-shaped LEDs disposed between the first and second electrodes; a reflective contact electrode disposed on opposite ends of the rod-shaped LEDs to electrically connect the rod-shaped LEDs to the first and second electrodes; and a light-transmitting structure disposed between the first and second electrodes and extending to cross the rod-shaped LEDs.
    Type: Grant
    Filed: March 20, 2023
    Date of Patent: April 22, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong Hyuk Kang, Hyun Min Cho, Dae Hyun Kim, Joo Yeol Lee, Hyun Deok Im
  • Patent number: 12284879
    Abstract: A display device includes a first base, a pixel electrode on the first base, a pixel defining layer having an opening that at least partially exposes the pixel electrode, a light emitting layer on the pixel electrode, an auxiliary electrode on the same layer as the pixel electrode, a partition wall on the auxiliary electrode that at least partially exposes a side surface of the auxiliary electrode, an organic layer on the partition wall, and a common electrode continuously arranged on the light emitting layer and the organic layer, wherein a side surface of the partition wall has a reverse-tapered shape, and the common electrode contacts the side surface of the auxiliary electrode.
    Type: Grant
    Filed: November 11, 2022
    Date of Patent: April 22, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Min Cho, Tae Wook Kang, Tae Sung Kim, Dae Won Choi, Sang Gab Kim
  • Patent number: 12272770
    Abstract: A display device may include pixels disposed on a substrate. Each of the pixels may include a first electrode, a second electrode spaced apart from the first electrode and enclosing a perimeter of the first electrode, light emitting elements disposed between the first electrode and the second electrode, and each including a first end and a second end, a third electrode overlapping the first electrode and the first end of each of the light emitting elements in a plan view, and electrically contacting the first electrode and the first end of each of the light emitting elements, and a fourth electrode overlapping the second electrode and the second end of each of the light emitting elements in a plan view, and electrically contacting the second electrode and the second end of each of the light emitting elements. The light emitting elements may be radially disposed around the first electrode.
    Type: Grant
    Filed: November 27, 2020
    Date of Patent: April 8, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Eun A Yang, Han Su Kim, Jong Hyuk Kang, Hyun Min Cho
  • Patent number: 12268001
    Abstract: A nonvolatile memory device with improved reliability is provided. The nonvolatile memory device comprises a substrate, a mold structure including a plurality of word lines stacked on the substrate, a first word line cut region configured to cut the mold structure, a first channel structure spaced apart from the first word line cut region by a first distance, and disposed in the mold structure and the substrate, and a second channel structure spaced apart from the first word line cut region by a second distance, and disposed in the mold structure and the substrate, wherein the second distance is greater than the first distance, a first width of the first channel structure is different from a second width of the second channel structure, and a first length of the first channel structure is different from a second length of the second channel structure.
    Type: Grant
    Filed: May 4, 2022
    Date of Patent: April 1, 2025
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Hwan Lee, Hyun Min Cho
  • Publication number: 20250107294
    Abstract: A display device includes a first electrode and a second electrode that are spaced apart from and facing each other; a light-blocking layer disposed above the first electrode and the second electrode; and at least one light-emitting element disposed between the first electrode and the second electrode. The light-blocking layer includes a light-blocking portion absorbing light and an opening pattern. The light-blocking portion includes an area partially overlapping the first electrode and the second electrode. The at least one opening pattern exposes portions of the first and second electrodes facing each other and at least a portion of an area between the first and second electrodes facing each other. The at least one light-emitting element overlaps the at least one opening pattern.
    Type: Application
    Filed: February 23, 2024
    Publication date: March 27, 2025
    Applicant: Samsung Display Co., LTD.
    Inventors: Jin Oh KWAG, Dae Hyun KIM, Keun Kyu SONG, Sung Chan JO, Hyun Min CHO
  • Patent number: 12255223
    Abstract: A display device includes a pixel in a display area. The pixel includes: spaced apart first and second electrodes; a first insulating layer on the first electrode and the second electrode and between the first electrode and the second electrode and having a first etch selectivity; a first insulating pattern on the first insulating layer between the first electrode and the second electrode, and having a second etch selectivity; a light emitting element on the first insulating pattern; a second insulating pattern having the second etch selectivity and being on one area of the light emitting element such that a first end and the second end of the light emitting element are exposed; and third and fourth electrodes configured to electrically connect the first end and the second end of the light emitting element to the first and second electrodes, respectively.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: March 18, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Deok Im, Jong Hyuk Kang, Dae Hyun Kim, Hyun Min Cho
  • Patent number: 12249674
    Abstract: A display device includes a first electrode extending in a first direction; a second electrode extending in the first direction and spaced apart from, in a second direction, the first electrode; a light-emitting element having a shape extending in a direction and between the first and second electrodes such that the direction is parallel to the second direction; a first contact electrode having a shape extending in a third direction and having at least a portion on the first electrode; and a second contact electrode having a shape extending in the third direction, spaced apart from, in a fourth direction, the first contact electrode, and having at least a portion on the second electrode, the first contact electrode electrically contacts a side of the light-emitting element, and the second contact electrode electrically contacts another side of the light-emitting element.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: March 11, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Deok Im, Jong Hyuk Kang, Hyun Min Cho
  • Patent number: 12243953
    Abstract: An apparatus for manufacturing a light emitting display device includes a stage, and at least one electric-field application module disposed on at least one side of the stage. The apparatus further includes at least one of: at least one printing head disposed above the stage, and a heating element disposed adjacent the stage. The at least one electric-field application module includes a probe head having at least one probe pin, and a driver connected to the probe head to move the probe head.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: March 4, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong Hyuk Kang, Won Ho Lee, Hyun Deok Im, Young Hoi Kim, Jin Young Kim, Hyun Min Cho, Hae Yun Choi
  • Patent number: 12243969
    Abstract: A light emitting element structure may include at least one light emitting element which is disposed on a substrate and spaced apart from each other, and extends in a direction perpendicular to the substrate; an auxiliary layer which is disposed on the substrate, exposes at least a portion of the upper surface of the substrate, and surrounds the outer surface of the light emitting element; a current spreading layer which is disposed on the auxiliary layer and electrically contacts an end of the light emitting element; a first pad which is electrically connected to the end of the light emitting element, disposed on the current spreading layer, and does not to overlap the light emitting element; and a second pad which is electrically connected to another end of the light emitting element disposed on the upper surface of the exposed substrate and spaced apart from the auxiliary layer.
    Type: Grant
    Filed: May 27, 2019
    Date of Patent: March 4, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Min Cho, Jung Hong Min, Dae Hyun Kim, Dong Uk Kim