Patents by Inventor YEOUNGKEOL WOO

YEOUNGKEOL WOO 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: 11158693
    Abstract: A display apparatus includes a base substrate, an active pattern disposed on the base substrate, a gate insulation layer disposed on the active pattern, a gate electrode disposed on the gate insulation layer and overlapping the active pattern, a first insulation layer disposed on the gate electrode and having a total amount of hydrogen of about 5 atomic percent (at. %) to about 30 at. %, and a source electrode and a drain electrode which are disposed on the first insulation layer and are electrically connected to the active pattern.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: October 26, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yung Bin Chung, Yeoungkeol Woo, Kwanghyun Kim, Sangwoo Sohn, Dokeun Song, Sangwook Lee, Heon Sik Ha
  • Publication number: 20210320278
    Abstract: A display apparatus includes a first substrate, a main pixel circuit located on the first substrate and including a first semiconductor layer, an auxiliary pixel circuit located on the first substrate and including a second semiconductor layer, a buffer layer located between the first substrate and the first semiconductor layer and between the first substrate and the second semiconductor layer, and a barrier layer located between the first substrate and the buffer layer, including one material from among silicon nitride (SiNx), aluminum oxide (Al2O3), and zirconium oxide (Zr2O3), and having a density ranging from about 2 g/cm3 to about 6 g/cm3.
    Type: Application
    Filed: November 9, 2020
    Publication date: October 14, 2021
    Inventors: Yungbin Chung, Sanggun Choi, Yeoungkeol Woo, Myounggeun Cha, Eunjin Kwak
  • Publication number: 20210288083
    Abstract: A display apparatus includes a substrate. A first buffer layer is disposed over the substrate. The first buffer layer includes silicon nitride and has an atomic percentage of hydrogen bonded to silicon of about 0.36 to about 1.01. A thin film transistor is disposed over the first buffer layer. The thin film transistor includes an active layer. A display element is electrically connected to the thin film transistor.
    Type: Application
    Filed: December 28, 2020
    Publication date: September 16, 2021
    Inventors: YUNGBIN CHUNG, YEOUNGKEOL WOO, EUNJIN KWAK
  • Patent number: 10847587
    Abstract: A display device including a display panel including a light emitting device and a thin film sealing layer disposed on the light emitting device, the display panel providing a base surface, and a touch sensing member including a touch electrode layer and disposed on the base surface. The thin film sealing layer includes a first inorganic layer having a first content of hydrogen, and a second inorganic layer disposed on the first inorganic layer and having a second content of hydrogen less than the first content.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: November 24, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sangwook Lee, Changok Kim, Yeoungkeol Woo
  • Publication number: 20200111854
    Abstract: A display apparatus includes a base substrate, an active pattern disposed on the base substrate, a gate insulation layer disposed on the active pattern, a gate electrode disposed on the gate insulation layer and overlapping the active pattern, a first insulation layer disposed on the gate electrode and having a total amount of hydrogen of about 5 atomic percent (at. %) to about 30 at. %, and a source electrode and a drain electrode which are disposed on the first insulation layer and are electrically connected to the active pattern.
    Type: Application
    Filed: September 19, 2019
    Publication date: April 9, 2020
    Inventors: Yung Bin CHUNG, Yeoungkeol WOO, Kwanghyun KIM, Sangwoo SOHN, Dokeun SONG, Sangwook LEE, Heon Sik HA
  • Patent number: 10490614
    Abstract: A display device includes a thin film transistor, a gate insulting layer, an interlayer insulating layer, a data line, a spacer, and a pixel. The thin film transistor includes a semiconductor layer and a gate electrode. The semiconductor layer includes a source region and a drain region on respective sides of the channel region. The gate insulating layer is between the semiconductor layer and the gate electrode. The interlayer insulating layer covers the thin film transistor. The data line contacts the semiconductor layer via a hole passing through the gate insulating layer and the interlayer insulating layer. The spacer is on an inner wall of the hole and contacting the data line. The pixel electrode is electrically connected to the thin film transistor.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: November 26, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Subin Bae, Shinil Choi, Changok Kim, Chulmin Bae, Sanggab Kim, Sunghoon Yang, Yeoungkeol Woo, Yugwang Jeong
  • Publication number: 20190326550
    Abstract: A display apparatus includes an organic light emitting display panel including a thin film encapsulation layer, a first conductive layer directly on the thin film encapsulation layer, at least one inorganic layer on the thin film encapsulation layer and having a density of about 2.05 g/cm3 to about 2.4 g/cm3, and a window on the at least one inorganic layer. In the display apparatus according to embodiments of the present disclosure, the generation of bubbles may be suppressed or reduced.
    Type: Application
    Filed: July 1, 2019
    Publication date: October 24, 2019
    Inventors: Changok Kim, Kiho Bang, Yeoungkeol Woo, Sangwook Lee, Hyeongi Cho
  • Patent number: 10361393
    Abstract: A display apparatus includes an organic light emitting display panel including a thin film encapsulation layer, a first conductive layer directly on the thin film encapsulation layer, at least one inorganic layer on the thin film encapsulation layer and having a density of about 2.05 g/cm3 to about 2.4 g/cm3, and a window on the at least one inorganic layer. In the display apparatus according to embodiments of the present disclosure, the generation of bubbles may be suppressed or reduced.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: July 23, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Changok Kim, Kiho Bang, Yeoungkeol Woo, Sangwook Lee, Hyeongi Cho
  • Publication number: 20180166521
    Abstract: A display device includes a thin film transistor, a gate insulting layer, an interlayer insulating layer, a data line, a spacer, and a pixel. The thin film transistor includes a semiconductor layer and a gate electrode. The semiconductor layer includes a source region and a drain region on respective sides of the channel region. The gate insulating layer is between the semiconductor layer and the gate electrode. The interlayer insulating layer covers the thin film transistor. The data line contacts the semiconductor layer via a hole passing through the gate insulating layer and the interlayer insulating layer. The spacer is on an inner wall of the hole and contacting the data line. The pixel electrode is electrically connected to the thin film transistor.
    Type: Application
    Filed: October 10, 2017
    Publication date: June 14, 2018
    Inventors: Subin BAE, Shinil CHOI, Changok KIM, Chulmin BAE, Sanggab KIM, Sunghoon YANG, Yeoungkeol WOO, Yugwang JEONG
  • Publication number: 20170373270
    Abstract: A display apparatus includes an organic light emitting display panel including a thin film encapsulation layer, a first conductive layer directly on the thin film encapsulation layer, at least one inorganic layer on the thin film encapsulation layer and having a density of about 2.05 g/cm3 to about 2.4 g/cm3, and a window on the at least one inorganic layer. In the display apparatus according to embodiments of the present disclosure, the generation of bubbles may be suppressed or reduced.
    Type: Application
    Filed: April 25, 2017
    Publication date: December 28, 2017
    Inventors: Changok Kim, Kiho Bang, Yeoungkeol Woo, Sangwook Lee, Hyeongi Cho
  • Publication number: 20170338288
    Abstract: A display device including a display panel including a light emitting device and a thin film sealing layer disposed on the light emitting device, the display panel providing a base surface, and a touch sensing member including a touch electrode layer and disposed on the base surface. The thin film sealing layer includes a first inorganic layer having a first content of hydrogen, and a second inorganic layer disposed on the first inorganic layer and having a second content of hydrogen less than the first content.
    Type: Application
    Filed: May 11, 2017
    Publication date: November 23, 2017
    Inventors: SANGWOOK LEE, CHANGOK KIM, YEOUNGKEOL WOO