Patents by Inventor Ju-won Yoon

Ju-won Yoon 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: 20250101568
    Abstract: A method of fabricating a deposition mask includes: preparing a silicon on insulator (SOI) substrate including an upper silicon substrate, a lower silicon substrate, and an insulating layer between the upper silicon substrate and the lower silicon substrate; forming a mask membrane having a plurality of openings by patterning the upper silicon substrate; forming a first protective layer on the upper silicon substrate and a second protective layer on the lower silicon substrate; forming a cell opening by patterning the lower silicon substrate; and removing the first protective layer and the second protective layer.
    Type: Application
    Filed: June 10, 2024
    Publication date: March 27, 2025
    Inventors: Jae Been LEE, Mi Yeon CHO, Dae Ho SONG, Ju Won YOON, Yea Hwane CHOI
  • Publication number: 20250081749
    Abstract: A display panel includes a circuit board and an element layer disposed on the circuit board and including a pixel defining layer having a plurality of openings, and a spacer disposed on the pixel defining layer. The plurality of openings include a first opening, a second opening, and a third opening that are adjacent to the spacer. The spacer includes a central portion disposed between the first, second, and third openings and a first extension, a second extension, and a third extension that protrude from the central portion in three directions, respectively. End portions of the first, second, and third extensions are disposed in a region defined by virtual lines connecting a first center of the first opening, a second center of the second opening, and a third center of the third opening.
    Type: Application
    Filed: August 5, 2024
    Publication date: March 6, 2025
    Applicant: Samsung Display Co., Ltd.
    Inventors: JUNGHYUN KWON, JU-WON YOON, SHIN TACK KANG, JAEBEEN LEE
  • Publication number: 20250048843
    Abstract: According to an embodiment, a display device may include a semiconductor wafer substrate, a complementary metal oxide semiconductor (CMOS) circuit layer disposed on the semiconductor wafer substrate, and a light emitting element layer disposed on the CMOS circuit layer. The light emitting element layer may include a pixel defining film partitioning a plurality of pixels, a pixel electrode disposed independently in each of the plurality of pixels, an aging wiring disposed between the plurality of pixels, a light emitting layer commonly covering the pixel electrodes of each of the plurality of pixels and the aging wiring, and a common electrode covering the light emitting layer. A portion positioned between the aging wiring and the common electrode of the light emitting layer may include an aged portion in which at least a portion of a conductive layer included in the light emitting layer is aged.
    Type: Application
    Filed: May 22, 2024
    Publication date: February 6, 2025
    Inventors: Seok Hyun LIM, Mi Yeon CHO, Eun Ho SONG, Ju Won YOON, Jae Been LEE
  • Publication number: 20250040356
    Abstract: A display device includes a plurality of first pixels, a substrate, a first semiconductor layer which is disposed on the substrate and includes an active layer of a first transistor, a first insulating layer which is disposed on the first semiconductor layer, a first conductive layer which is disposed on the first insulating layer and includes a gate electrode of the first transistor, a second insulating layer which is disposed on the first conductive layer, and a second conductive layer which is disposed on the second insulating layer and includes a first electrode and a second electrode of the first transistor, where a first opening exposing the first conductive layer in an area in which the first conductive layer and the second conductive layer of each of the plurality of first pixels do not overlap is defined in the second insulating layer.
    Type: Application
    Filed: October 14, 2024
    Publication date: January 30, 2025
    Inventors: Ju Won YOON, Tae Hoon YANG
  • Patent number: 12150347
    Abstract: A display device includes a plurality of first pixels, a substrate, a first semiconductor layer which is disposed on the substrate and includes an active layer of a first transistor, a first insulating layer which is disposed on the first semiconductor layer, a first conductive layer which is disposed on the first insulating layer and includes a gate electrode of the first transistor, a second insulating layer which is disposed on the first conductive layer, and a second conductive layer which is disposed on the second insulating layer and includes a first electrode and a second electrode of the first transistor, where a first opening exposing the first conductive layer in an area in which the first conductive layer and the second conductive layer of each of the plurality of first pixels do not overlap is defined in the second insulating layer.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: November 19, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ju Won Yoon, Tae Hoon Yang
  • Publication number: 20240346984
    Abstract: A light emitting display device includes a driving transistor including a control electrode, a floating electrode, a first electrode connected to a driving voltage line; and a second electrode; a second transistor including a gate electrode, a third electrode connected to a data line, and a fourth electrode connected to the control electrode; a storage capacitor including a first storage electrode and a second storage electrode connected to the control electrode; and a light emitting diode (LED) connected to the second electrode of the driving transistor, where the first storage electrode is connected to a storage voltage line electrically separate from the driving voltage line.
    Type: Application
    Filed: February 16, 2024
    Publication date: October 17, 2024
    Inventors: Ju-Won YOON, Jung-Hun NOH
  • Publication number: 20240313038
    Abstract: A display device includes a semiconductor circuit substrate having a display area and a non-display area and having a plurality of pixel circuit units and a plurality of light emitting element layers including two or more layers stacked on the display area of the semiconductor circuit substrate, each of the two or more layers including a plurality of light emitting elements, wherein the plurality of light emitting elements at a same layer of the plurality of light emitting element layers is configured to emit a same color light and the light emitting elements at different layers of the plurality of light emitting element layers are configured to emit different color lights, and the plurality of light emitting elements at the same layer is connected to a same common electrode and the light emitting elements at the different layers are connected to different common electrodes.
    Type: Application
    Filed: February 13, 2024
    Publication date: September 19, 2024
    Inventors: Ju Won YOON, Jung Hun NOH
  • Patent number: 12094865
    Abstract: A display device and a method for fabricating the same. The display device includes a substrate including a circuit layer and a first pad unit; an auxiliary substrate disposed below the substrate and comprising a driving circuit and a second pad unit; a light-emitting unit disposed on the circuit layer; and a connection electrode in contact with a side surface of the substrate and electrically connecting the first pad unit with the second pad unit. The method includes forming a circuit layer and a first pad unit on a first surface of a substrate; forming a driving circuit and a second pad unit on a fourth surface of an auxiliary substrate; and attaching a second surface of the substrate opposite the first surface to a third surface of the auxiliary substrate opposite the fourth surface.
    Type: Grant
    Filed: June 15, 2022
    Date of Patent: September 17, 2024
    Assignee: SAMSUNG DISPLAY CO. LTD.
    Inventors: Seung Chan Lee, Gun Hee Kim, Sang Ho Park, Ju Won Yoon, Joo Hee Jeon, Hyun Joon Kim
  • Publication number: 20240268146
    Abstract: A method of manufacturing a display device includes forming an active pattern including a semiconductor area on a substrate, forming a first conductive layer including a floating gate electrode overlapping the semiconductor area on the active pattern, forming a second conductive layer including a control gate electrode overlapping the floating gate electrode on the first conductive layer, forming a global line layer including a first global line electrically connected to the control gate electrode on the second conductive layer, providing a first constant voltage to the first global line, and removing the global line layer.
    Type: Application
    Filed: January 8, 2024
    Publication date: August 8, 2024
    Inventors: JUNG-HUN NOH, GUANGHAI JIN, JU-WON YOON
  • Publication number: 20240155885
    Abstract: Provided is a display device. A display device includes a display area and a buffer area disposed around the display area, a pixel electrode disposed on a substrate and in the display area, a bank covering an edge of the pixel electrode, light emitting elements disposed on the pixel electrode and extending in a thickness direction of the substrate, and a buffer disposed on the substrate and in the buffer area. The bank and the buffer are disposed on a same layer.
    Type: Application
    Filed: July 25, 2023
    Publication date: May 9, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: Jung Hun NOH, Su Jin LEE, Bon Yong KOO, Ki Seong SEO, Ju Won YOON
  • Publication number: 20240063343
    Abstract: A display device comprises a pixel electrode disposed on a substrate, light emitting elements disposed on the pixel electrode, a first via layer disposed on the pixel electrode and filled between the light emitting elements, and a common electrode disposed on the first via layer and the light emitting elements, wherein each of the light emitting elements includes a first semiconductor layer including a p-type dopant, an active layer disposed on the first semiconductor layer, a second semiconductor layer disposed on the active layer and including an n-type dopant, and a third semiconductor layer disposed on the second semiconductor layer, and the common electrode is in contact with a side surface of the second semiconductor layer.
    Type: Application
    Filed: April 21, 2023
    Publication date: February 22, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: Jung Hun NOH, Ju Won YOON, Jin Wan KIM, Jin Woo CHOI
  • Publication number: 20230411577
    Abstract: The display device includes a substrate, a thin-film transistor on the substrate and including a first electrode, a second electrode and a semiconductor layer, a first insulating layer on the thin-film transistor, an organic layer on the first insulating layer, at least one light-emitting element on the organic layer, a pixel electrode on the organic layer and in contact with a side surface of the at least one light-emitting element, a planarization layer on the side surface of the at least one light-emitting element and a common electrode on the at least one light-emitting element and the planarization layer.
    Type: Application
    Filed: February 24, 2023
    Publication date: December 21, 2023
    Inventors: Ju Won YOON, Jung Hun NOH, Ki Seong SEO, Jae Gwang UM, So Yeon YOON, Sang Hyun LEE, Hyung Il JEON
  • Patent number: 11682353
    Abstract: An organic light emitting diode display includes: a substrate; an overlapping layer on the substrate; a pixel on the substrate and the overlapping layer; and a scan line, a data line, a driving voltage line, and an initialization voltage line that are connected to the pixel. The pixel includes: an organic light emitting diode; a second transistor connected to the scan line and the data line; a driving transistor including a gate electrode, an input terminal, and an output terminal, and to apply a current to the organic light emitting diode from the output terminal; and a voltage application transistor to apply a voltage to the overlapping layer. An output of the second transistor is connected to the input terminal of the driving transistor, and the overlapping layer is between the driving transistor and the substrate while overlapping with the driving transistor on a plane.
    Type: Grant
    Filed: July 1, 2022
    Date of Patent: June 20, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ju-Won Yoon, Gun Hee Kim, Sang Ho Park, Seung Chan Lee, Joo Hee Jeon
  • Patent number: 11637162
    Abstract: A display device includes a plurality of pixels. Each pixel includes a first transistor including a first gate electrode, a first source region, and a first drain region, a second transistor connected to the first source region of the first transistor, a third transistor connected to the first gate electrode and the first drain region of the first transistor, a fifth transistor connected to the first source region of the first transistor, and a sixth transistor connected to the first drain region of the first transistor. The pixels include a first pixel and a second pixel disposed adjacent to each other. The first and second pixels share a fourth transistor connected to the third transistor of the first pixel and the third transistor of the second pixel, and share a seventh transistor connected to the sixth transistor of the first pixel and the sixth transistor of the second pixel.
    Type: Grant
    Filed: January 4, 2021
    Date of Patent: April 25, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jeong-Soo Lee, Moo Soon Ko, Min Woo Woo, Ju-Won Yoon, Deuk Myung Ji
  • Publication number: 20220335895
    Abstract: An organic light emitting diode display includes: a substrate; an overlapping layer on the substrate; a pixel on the substrate and the overlapping layer; and a scan line, a data line, a driving voltage line, and an initialization voltage line that are connected to the pixel. The pixel includes: an organic light emitting diode; a second transistor connected to the scan line and the data line; a driving transistor including a gate electrode, an input terminal, and an output terminal, and to apply a current to the organic light emitting diode from the output terminal; and a voltage application transistor to apply a voltage to the overlapping layer. An output of the second transistor is connected to the input terminal of the driving transistor, and the overlapping layer is between the driving transistor and the substrate while overlapping with the driving transistor on a plane.
    Type: Application
    Filed: July 1, 2022
    Publication date: October 20, 2022
    Inventors: Ju-Won YOON, Gun Hee KIM, Sang Ho PARK, Seung Chan LEE, Joo Hee JEON
  • Publication number: 20220310579
    Abstract: A display device and a method for fabricating the same. The display device includes a substrate including a circuit layer and a first pad unit; an auxiliary substrate disposed below the substrate and comprising a driving circuit and a second pad unit; a light-emitting unit disposed on the circuit layer; and a connection electrode in contact with a side surface of the substrate and electrically connecting the first pad unit with the second pad unit. The method includes forming a circuit layer and a first pad unit on a first surface of a substrate; forming a driving circuit and a second pad unit on a fourth surface of an auxiliary substrate; and attaching a second surface of the substrate opposite the first surface to a third surface of the auxiliary substrate opposite the fourth surface.
    Type: Application
    Filed: June 15, 2022
    Publication date: September 29, 2022
    Applicant: Samsung Display Co. Ltd.
    Inventors: Seung Chan LEE, Gun Hee KIM, Sang Ho PARK, Ju Won YOON, Joo Hee JEON, Hyun Joon KIM
  • Patent number: 11393804
    Abstract: A display device and a method for fabricating the same. The display device includes a substrate including a circuit layer and a first pad unit; an auxiliary substrate disposed below the substrate and comprising a driving circuit and a second pad unit; a light-emitting unit disposed on the circuit layer; and a connection electrode in contact with a side surface of the substrate and electrically connecting the first pad unit with the second pad unit. The method includes forming a circuit layer and a first pad unit on a first surface of a substrate; forming a driving circuit and a second pad unit on a fourth surface of an auxiliary substrate; and attaching a second surface of the substrate opposite the first surface to a third surface of the auxiliary substrate opposite the fourth surface.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: July 19, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Chan Lee, Gun Hee Kim, Sang Ho Park, Ju Won Yoon, Joo Hee Jeon, Hyun Joon Kim
  • Patent number: 11386854
    Abstract: A pixel circuit includes: a driving switching element; a data initializer to initialize a voltage of a control electrode of the driving switching element; a data writer to write a data voltage to the driving switching element; an organic light emitting element; an organic light emitting element initializer to initialize an anode electrode of the organic light emitting element to a second initialization voltage based on an organic light emitting element initialization gate signal; and a light emitting controller to control an emission of the organic light emitting element. The organic light emitting element initializer includes: a control electrode to receive the organic light emitting element initialization gate signal; an input electrode to receive the second initialization voltage; an output electrode connected to the anode electrode; and a conductive layer to receive a compensation control signal that is different from the organic light emitting element initialization gate signal.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: July 12, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gun-Hee Kim, Sang-Ho Park, Ju-Won Yoon, Seung-Chan Lee, Joo-Hee Jeon
  • Patent number: 11380263
    Abstract: An organic light emitting diode display includes: a substrate; an overlapping layer on the substrate; a pixel on the substrate and the overlapping layer; and a scan line, a data line, a driving voltage line, and an initialization voltage line that are connected to the pixel. The pixel includes: an organic light emitting diode; a second transistor connected to the scan line and the data line; a driving transistor including a gate electrode, an input terminal, and an output terminal, and to apply a current to the organic light emitting diode from the output terminal; and a voltage application transistor to apply a voltage to the overlapping layer. An output of the second transistor is connected to the input terminal of the driving transistor, and the overlapping layer is between the driving transistor and the substrate while overlapping with the driving transistor on a plane.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: July 5, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ju-Won Yoon, Gun Hee Kim, Sang Ho Park, Seung Chan Lee, Joo Hee Jeon
  • Publication number: 20220208899
    Abstract: A display device includes a plurality of first pixels, a substrate, a first semiconductor layer which is disposed on the substrate and includes an active layer of a first transistor, a first insulating layer which is disposed on the first semiconductor layer, a first conductive layer which is disposed on the first insulating layer and includes a gate electrode of the first transistor, a second insulating layer which is disposed on the first conductive layer, and a second conductive layer which is disposed on the second insulating layer and includes a first electrode and a second electrode of the first transistor, where a first opening exposing the first conductive layer in an area in which the first conductive layer and the second conductive layer of each of the plurality of first pixels do not overlap is defined in the second insulating layer.
    Type: Application
    Filed: August 19, 2021
    Publication date: June 30, 2022
    Inventors: Ju Won YOON, Tae Hoon YANG