Patents by Inventor Taek Geun Lee

Taek Geun 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).

  • Patent number: 12325887
    Abstract: A black plated steel sheet may include a steel sheet and a zinc plating layer positioned on one side of the steel sheet. The zinc plating layer may contain a black layer on the uppermost surface. The black layer may include three or more portions of which the blackness is different from each other. In a first part, the thickness of the black layer may be more than 1 ?m. In a second part, the thickness of the black layer may be 250 nm or more to less than 1 ?m, and in a third part, the thickness of the black layer may be less than 200 nm.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: June 10, 2025
    Assignee: POSCO CO., LTD.
    Inventors: Hye Jeong Kim, Kyung Hwang Lee, Taek Geun Lee
  • Patent number: 12133425
    Abstract: A display device is provided. The display device includes a first substrate, a first charge trap layer disposed on the first substrate and including silicon nitride, a semiconductor layer disposed on the first charge trap layer and including a first active layer of a first transistor and a second active layer of a second transistor, and an organic light emitting element electrically connected to the first transistor, wherein a ratio of a content of a Si element to a content of an N element in the first charge trap layer is in a range of 1.6 to 2.5.
    Type: Grant
    Filed: August 10, 2021
    Date of Patent: October 29, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Eung Taek Kim, Kohei Ebisuno, Suk Hoon Ku, Jin Suk Lee, Jung Mi Choi, Young In Hwang, Tae Sik Kim, Jin Suk Seo, Hwang Sup Shin, Taek Geun Lee, Joo Hyeon Jo, Hong Jun Choi, Hee Yeon Kim, Na Lae Lee
  • Publication number: 20240294999
    Abstract: The present disclosure is that plating steel with spangles can be subjected to constant humidity heat treatment. Due to this, the degree of blackening is different depending on the spangle pattern, and then a black plated steel sheet having a marble texture and a beautiful pattern can be obtained when the blackening is completed.
    Type: Application
    Filed: December 21, 2021
    Publication date: September 5, 2024
    Applicants: POSCO Co., Ltd, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Hye Jeong Kim, Kyung Hwang Lee, Taek Geun Lee
  • Patent number: 11574592
    Abstract: A display device includes a base substrate including a first substrate and a second substrate sequentially laminated, a lower semiconductor layer disposed on at least one of the first substrate and the second substrate, a buffer layer disposed on the base substrate, an active semiconductor layer disposed on the buffer layer and including a first active layer of a first transistor and a second active layer of a second transistor, a first insulating layer disposed on the active semiconductor layer, and a first conductive layer disposed on the first insulating layer and including a first gate electrode of the first transistor and a second gate electrode of the second transistor, wherein the lower semiconductor layer overlaps the first active layer, and does not overlap the second active layer.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: February 7, 2023
    Inventors: Eung Taek Kim, Hee Yeon Kim, Hwang Sup Shin, Na Lae Lee, Jin Suk Lee, Taek Geun Lee, Joo Hyeon Jo, Jung Mi Choi, Hong Jun Choi, Young In Hwang
  • Patent number: 11542577
    Abstract: A magnesium alloy sheet according to an embodiment of the present invention includes greater than 3 wt % and less than or equal to 5 wt % of Al, 0.5 wt % to 1.5 wt % of Zn, 0.1 wt % to 0.5 wt % of Mn, 0.001 wt % to 0.01 wt % of B, 0.1 wt % to 0.5 wt % of Y, a balance amount of magnesium, and other inevitable impurities on the basis of a total of 100 wt %.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: January 3, 2023
    Assignee: POSCO HOLDINGS INC.
    Inventors: Jae Sin Park, Taek Geun Lee, Dae Hwan Choi, Bae Mun Seo, Hye Ji Kim, Jonggeol Kim, Hye Jeong Kim, Yoonsuk Oh, Jae Eock Cho, Dong Kyun Choo
  • Publication number: 20220415979
    Abstract: The present disclosure relates to a light emitting display device including: a substrate; an anode positioned on the substrate; a black pixel defining layer, wherein an opening overlapping an anode is defined in the black pixel defining layer; an emission layer positioned in the opening of the black pixel defining layer; a spacer positioned on the black pixel defining layer and having a step; and a cathode formed on the emission layer, the black pixel defining layer, and the spacer, wherein the spacer has a first portion and a second portion having a lower height than the first portion and integrally formed with the first portion, and the end portion of the second portion is positioned closer to the opening than the end portion of the first portion.
    Type: Application
    Filed: January 11, 2022
    Publication date: December 29, 2022
    Inventors: Nak Cho CHOI, Taek Geun LEE, Kwang Sik LEE, Yun-Kyeong IN
  • Publication number: 20220140033
    Abstract: A display device is provided. The display device includes a first substrate, a first charge trap layer disposed on the first substrate and including silicon nitride, a semiconductor layer disposed on the first charge trap layer and including a first active layer of a first transistor and a second active layer of a second transistor, and an organic light emitting element electrically connected to the first transistor, wherein a ratio of a content of a Si element to a content of an N element in the first charge trap layer is in a range of 1.6 to 2.5.
    Type: Application
    Filed: August 10, 2021
    Publication date: May 5, 2022
    Inventors: Eung Taek KIM, Kohei EBISUNO, Suk Hoon KU, Jin Suk LEE, Jung Mi CHOI, Young In HWANG, Tae Sik KIM, Jin Suk SEO, Hwang Sup SHIN, Taek Geun LEE, Joo Hyeon JO, Hong Jun CHOI, Hee Yeon KIM, Na Lae LEE
  • Publication number: 20220059031
    Abstract: A display device includes a base substrate including a first substrate and a second substrate sequentially laminated, a lower semiconductor layer disposed on at least one of the first substrate and the second substrate, a buffer layer disposed on the base substrate, an active semiconductor layer disposed on the buffer layer and including a first active layer of a first transistor and a second active layer of a second transistor, a first insulating layer disposed on the active semiconductor layer, and a first conductive layer disposed on the first insulating layer and including a first gate electrode of the first transistor and a second gate electrode of the second transistor, wherein the lower semiconductor layer overlaps the first active layer, and does not overlap the second active layer.
    Type: Application
    Filed: August 9, 2021
    Publication date: February 24, 2022
    Inventors: Eung Taek KIM, Hee Yeon KIM, Hwang Sup SHIN, Na Lae LEE, Jin Suk LEE, Taek Geun LEE, Joo Hyeon JO, Jung Mi CHOI, Hong Jun CHOI, Young In HWANG
  • Publication number: 20210140017
    Abstract: A magnesium alloy sheet according to an embodiment of the present invention includes greater than 3 wt % and less than or equal to 5 wt % of Al, 0.5 wt % to 1.5 wt % of Zn, 0.1 wt % to 0.5 wt % of Mn, 0.001 wt % to 0.01 wt % of B, 0.1 wt % to 0.5 wt % of Y, a balance amount of magnesium, and other inevitable impurities on the basis of a total of 100 wt %.
    Type: Application
    Filed: December 3, 2018
    Publication date: May 13, 2021
    Inventors: Jae Sin Park, Taek Geun Lee, Dae Hwan Choi, Bae Mun Seo, Hye Ji Kim, Jonggeol Kim, Hye Jeong Kim, Yoonsuk Oh, Jae Eock Cho, Dong Kyun Choo