Patents by Inventor Hyunseok Na

Hyunseok Na 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: 11980066
    Abstract: The present disclosure provides a light-emitting display apparatus including a substrate including a first region and a second region, a first thin-film transistor (TFT) disposed in the first region of the substrate and including a first semiconductor pattern, a first gate electrode, a first source electrode, and a first drain electrode, a second TFT disposed in the second region of the substrate and including a second semiconductor pattern, a second gate electrode, a second source electrode, and a second drain electrode, at least one insulating layer between the first semiconductor pattern and the second semiconductor pattern, a first blocking layer below the first semiconductor pattern, and a second blocking layer below the second semiconductor pattern.
    Type: Grant
    Filed: December 23, 2022
    Date of Patent: May 7, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Hyunseok Na, Sanggil Kim, JaeJun Ahn, Hyoungsun Park, ChangSuk Hyun
  • Patent number: 11974434
    Abstract: An integrated circuit device includes a plurality of conductive lines extending in a horizontal direction parallel to a main surface of a substrate and overlapping one another in a vertical direction vertical to the main surface, on the substrate, a plurality of insulation layers each between two adjacent conductive lines of the plurality of conductive lines to extend in the horizontal direction, a channel layer extending in the vertical direction in a channel hole passing through the plurality of conductive lines and the plurality of insulation layers, and a plurality of outer blocking dielectric layers between the plurality of conductive lines and the channel layer, in at least some of the plurality of conductive lines, wherein a width of each of the plurality of outer blocking dielectric layers in the horizontal direction increases toward the main surface.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: April 30, 2024
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sangyong Park, Hyunseok Na, Jaeduk Lee
  • Patent number: 11943001
    Abstract: An electronic device includes a network monitor configured to acquire network environment information related to a radio frequency (RF) transmission signal; a transceiver configured to generate an envelope signal of the RF transmission signal; a transmission (Tx) module including a power amplifier for receiving the RF transmission signal from the transceiver and amplifying the RF transmission signal; and an envelope tracking (ET) modulator configured to receive the envelope signal from the transceiver and to provide a bias of a power amplifier to correspond to the envelope signal, wherein the ET modulator determines a magnitude of the bias of the power amplifier based on the network environment information acquired by the network monitor.
    Type: Grant
    Filed: November 10, 2022
    Date of Patent: March 26, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Namjun Cho, Jooseung Kim, Hyunseok Choi, Hyoseok Na
  • Publication number: 20240032351
    Abstract: A display apparatus is disclosed. The display apparatus according to the present disclosure may include a substrate including an active area and a non-active area around the active area, a first shield layer disposed on the substrate, a first thin film transistor including a first semiconductor layer on the first shield layer, a first etch stopper on the first semiconductor layer, a second thin film transistor including a second semiconductor layer on the substrate, and a second etch stopper on the second semiconductor layer.
    Type: Application
    Filed: June 12, 2023
    Publication date: January 25, 2024
    Inventors: Pyungho Choi, Hyunseok Na, JaeJun Ahn, Hyoungsun Park, Hyunchyol Shin, Seongsoo Cho
  • Publication number: 20230413658
    Abstract: Provided is a display device. The display device comprises a first flexible substrate, a second flexible substrate including a first area, a second area, and a third area, and an intermediate layer between the first flexible substrate and the second flexible substrate. A plurality of pixels is disposed in the first area, and the plurality of pixels includes a first transistor including a polycrystalline semiconductor and a first gate electrode, a second transistor including an oxide semiconductor and a second gate electrode composed of a first metal layer, a second metal layer, and a third metal layer, and a third transistor including the polycrystalline semiconductor disposed in the second area, and a plurality of dams, a first line, a second line, and a cathode are disposed in the third area, and the cathode extends to the first area and the second area.
    Type: Application
    Filed: June 16, 2023
    Publication date: December 21, 2023
    Inventors: Pyungho CHOI, Hyunseok NA, Hyoungsun PARK, Hyunchyol SHIN, Seongsoo CHO
  • Publication number: 20230301138
    Abstract: A light emitting display device can include a first thin film transistor including a first semiconductor pattern, a first gate electrode, and first source and drain electrodes; a second thin film transistor including a second semiconductor pattern, a second gate electrode, and second source and drain electrodes; a storage capacitor including a first storage capacitor electrode and a second storage capacitor electrode; and a light emitting element layer electrically connected to the second thin film transistor. The first storage capacitor electrode can be disposed in the same layer as the first gate electrode, and the second storage capacitor electrode can be disposed in the same layer as the second gate electrode.
    Type: Application
    Filed: March 20, 2023
    Publication date: September 21, 2023
    Applicant: LG Display Co., Ltd.
    Inventors: Kyoungjin AHN, Hyunseok NA, DongSeok PARK, Hyoungsun PARK, JaeJun AHN, ChangSuk HYUN
  • Publication number: 20230284487
    Abstract: An organic light emitting display device including both a polycrystalline semiconductor element and an oxide semiconductor element, and a method of manufacturing the display device are disclosed. In order to solve the damage of an oxide semiconductor pattern during a heat treatment process in the process of forming the oxide semiconductor element, until the process of forming the polycrystalline semiconductor element is completed, after one portion of a connection electrode connecting a polycrystalline semiconductor pattern to source and drain electrodes is formed in advance, then by forming the other portion of the connection electrode for completing the connection between the source and drain electrodes to the polycrystalline semiconductor pattern in the process of forming the oxide semiconductor element, the connection electrode can have a connection node between two edges thereof, and thereby, the performance of the oxide semiconductor element can be improved.
    Type: Application
    Filed: February 6, 2023
    Publication date: September 7, 2023
    Inventors: Hyunseok Na, Pyungho Choi, Hyoungsun Park, JaeJun Ahn, ChangSuk Hyun, Jaegeun Kim, Seongsoo Cho
  • Publication number: 20230276665
    Abstract: The present disclosure provides a light-emitting display apparatus including a substrate including a first region and a second region, a first thin-film transistor (TFT) disposed in the first region of the substrate and including a first semiconductor pattern, a first gate electrode, a first source electrode, and a first drain electrode, a second TFT disposed in the second region of the substrate and including a second semiconductor pattern, a second gate electrode, a second source electrode, and a second drain electrode, at least one insulating layer between the first semiconductor pattern and the second semiconductor pattern, a first blocking layer below the first semiconductor pattern, and a second blocking layer below the second semiconductor pattern.
    Type: Application
    Filed: December 23, 2022
    Publication date: August 31, 2023
    Inventors: Hyunseok NA, Sanggil KIM, JaeJun AHN, Hyoungsun PARK, ChangSuk HYUN
  • Publication number: 20230255059
    Abstract: An organic light-emitting diode (OLED) display device using hybrid type thin-film transistors (TFTs) is disclosed. The OLED display device includes an etch stopper film on a semiconductor pattern to prevent over etching of the semiconductor pattern located on a lower position and source and drain electrodes are brought in direct contact with the semiconductor pattern while passing through the etch stopper film to prevent malfunction of the TFTs due to surface resistance due to the etch stopper film. Thus, characteristics of the TFTs and process stability are secured.
    Type: Application
    Filed: November 7, 2022
    Publication date: August 10, 2023
    Inventors: Hyunseok Na, JaeJun Ahn, DongSeok Park, Hyoungsun Park, Heungso Ku, ChangSuk Hyun, Sanggil Kim, Kyoungjin Ahn, Pyungho Choi, Hyunchyol Shin, Seongsoo Cho
  • Publication number: 20220293632
    Abstract: An integrated circuit device includes a plurality of conductive lines extending in a horizontal direction parallel to a main surface of a substrate and overlapping one another in a vertical direction vertical to the main surface, on the substrate, a plurality of insulation layers each between two adjacent conductive lines of the plurality of conductive lines to extend in the horizontal direction, a channel layer extending in the vertical direction in a channel hole passing through the plurality of conductive lines and the plurality of insulation layers, and a plurality of outer blocking dielectric layers between the plurality of conductive lines and the channel layer, in at least some of the plurality of conductive lines, wherein a width of each of the plurality of outer blocking dielectric layers in the horizontal direction increases toward the main surface.
    Type: Application
    Filed: May 25, 2022
    Publication date: September 15, 2022
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sangyong PARK, Hyunseok NA, Jaeduk LEE
  • Patent number: 11393841
    Abstract: Example embodiments disclose a vertical memory device and method of manufacturing the same. The device may include a plurality of gate electrodes and a plurality of insulation patterns and a channel that penetrates a first gate electrode and a first insulation pattern. The device may have a charge storage structure including a tunnel insulation pattern, a charge trapping pattern, and a blocking pattern that are sequentially stacked from an outer sidewall of a channel. The device may have a buried pattern structure that is surrounded by the tunnel insulation pattern and the charge trapping pattern. The charge trapping pattern may include a first vertically sloped portion having a first thickness in the horizontal direction and a second vertically sloped portion having a second thickness in the horizontal direction, and the first thickness may be less than or equal to the second thickness.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: July 19, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyungjun Shin, Hyunseok Na, Yunkyu Jung, Heejueng Lee, Seungwan Hong
  • Patent number: 11380706
    Abstract: An integrated circuit device includes a plurality of conductive lines extending in a horizontal direction parallel to a main surface of a substrate and overlapping one another in a vertical direction vertical to the main surface, on the substrate, a plurality of insulation layers each between two adjacent conductive lines of the plurality of conductive lines to extend in the horizontal direction, a channel layer extending in the vertical direction in a channel hole passing through the plurality of conductive lines and the plurality of insulation layers, and a plurality of outer blocking dielectric layers between the plurality of conductive lines and the channel layer, in at least some of the plurality of conductive lines, wherein a width of each of the plurality of outer blocking dielectric layers in the horizontal direction increases toward the main surface.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: July 5, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sangyong Park, Hyunseok Na, Jaeduk Lee
  • Publication number: 20210043649
    Abstract: An integrated circuit device includes a plurality of conductive lines extending in a horizontal direction parallel to a main surface of a substrate and overlapping one another in a vertical direction vertical to the main surface, on the substrate, a plurality of insulation layers each between two adjacent conductive lines of the plurality of conductive lines to extend in the horizontal direction, a channel layer extending in the vertical direction in a channel hole passing through the plurality of conductive lines and the plurality of insulation layers, and a plurality of outer blocking dielectric layers between the plurality of conductive lines and the channel layer, in at least some of the plurality of conductive lines, wherein a width of each of the plurality of outer blocking dielectric layers in the horizontal direction increases toward the main surface.
    Type: Application
    Filed: July 23, 2020
    Publication date: February 11, 2021
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sangyong PARK, Hyunseok NA, Jaeduk LEE
  • Publication number: 20200365615
    Abstract: Example embodiments disclose a vertical memory device and method of manufacturing the same. The device may include a plurality of gate electrodes and a plurality of insulation patterns and a channel that penetrates a first gate electrode and a first insulation pattern. The device may have a charge storage structure including a tunnel insulation pattern, a charge trapping pattern, and a blocking pattern that are sequentially stacked from an outer sidewall of a channel. The device may have a buried pattern structure that is surrounded by the tunnel insulation pattern and the charge trapping pattern. The charge trapping pattern may include a first vertically sloped portion having a first thickness in the horizontal direction and a second vertically sloped portion having a second thickness in the horizontal direction, and the first thickness may be less than or equal to the second thickness.
    Type: Application
    Filed: January 3, 2020
    Publication date: November 19, 2020
    Inventors: Kyungjun Shin, Hyunseok Na, Yunkyu Jung, Heejueng Lee, Seungwan Hong
  • Patent number: 7964483
    Abstract: The present invention relates to a method for growing a nitride semiconductor epitaxial layer, which comprises the steps of growing a second nitride semiconductor epitaxial layer on a first nitride semiconductor epitaxial layer at a first temperature, growing a third nitride semiconductor epitaxial layer on the second nitride semiconductor epitaxial layer at a second temperature, and releasing nitrogen from the second nitride semiconductor epitaxial layer by increasing a temperature to a third temperature higher than the second temperature, thereby, it is possible to lower the defect density of epitaxial layers and reduce warpage of a substrate.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: June 21, 2011
    Assignee: Seoul National University Industry Foundation
    Inventors: Euijoon Yoon, Hyunseok Na
  • Publication number: 20060228901
    Abstract: The present invention relates to a method for growing a nitride semiconductor epitaxial layer, which comprises the steps of growing a second nitride semiconductor epitaxial layer on a first nitride semiconductor epitaxial layer at a first temperature, growing a third nitride semiconductor epitaxial layer on the second nitride semiconductor epitaxial layer at a second temperature, and releasing nitrogen from the second nitride semiconductor epitaxial layer by increasing a temperature to a third temperature higher than the second temperature, thereby, it is possible to lower the defect density of epitaxial layers and reduce warpage of a substrate.
    Type: Application
    Filed: July 7, 2004
    Publication date: October 12, 2006
    Applicant: Seoul National University Industry Foundation
    Inventors: Euijoon Yoon, Hyunseok Na