Patents by Inventor Dong il Yoo

Dong il Yoo 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: 11967705
    Abstract: An anode active material for a lithium secondary battery includes a carbon-based particle including pores therein, a silicon-containing coating layer formed at an inside the pores of the carbon-based particle or on a surface of the carbon-based particle, and a carbon coating layer formed on the silicon-containing coating layer. A full width at half maximum (FWHM) of an O1s peak of a surface measured by an X-ray photoelectron spectroscopy (XPS) is 2.0 or more. A lithium secondary battery including the anode active material having improved initial discharge capacity and capacity efficiency is provided.
    Type: Grant
    Filed: July 1, 2022
    Date of Patent: April 23, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Gwi Ok Park, Seok Keun Yoo, Dong Il Jang, Ju Ho Chung
  • Publication number: 20240121955
    Abstract: A manufacturing method of a semiconductor device may include: forming a stack comprising first material layers and second material layers that are alternately stacked; forming an opening in the stack; forming a first seed layer in the opening; forming a first buffer layer by surface-treating the first seed layer; and forming a blocking layer by oxidizing the first seed layer through the first buffer layer.
    Type: Application
    Filed: March 21, 2023
    Publication date: April 11, 2024
    Applicant: SK hynix Inc.
    Inventors: Jong Gi KIM, Young Jin NOH, Jae O PARK, Jin Ho BIN, Dong Chul YOO, Yoo Il JEON
  • Patent number: 11215892
    Abstract: The display device according to an exemplary embodiment of the present inventive concept includes: a signal line extending in a direction perpendicular to a first direction; a transistor electrically connected to the signal line; and a pixel electrode electrically connected to the transistor and including a branch electrode, wherein the branch electrode incudes a first portion and a second portion extending from the first portion and extending in a direction different from an extending direction of the first portion, an acute angle formed between an extending direction of the second portion and the first direction is smaller than an acute angle formed between the extending direction of the first portion and the first direction, and the signal line overlaps the second portion in a plan view.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: January 4, 2022
    Inventors: Kyeong Hwan Shin, Kyu Su Ahn, Dong Il Yoo
  • Publication number: 20210132456
    Abstract: The present disclosure relates to a display device. The display device according to an exemplary embodiment of the present inventive concept includes: a signal line extending in a direction perpendicular to a first direction; a transistor electrically connected to the signal line; and a pixel electrode electrically connected to the transistor and including a branch electrode, wherein the branch electrode incudes a first portion and a second portion extending from the first portion and extending in a direction different from an extending direction of the first portion, an acute angle formed between an extending direction of the second portion and the first direction is smaller than an acute angle formed between the extending direction of the first portion and the first direction, and the signal line overlaps the second portion in a plan view.
    Type: Application
    Filed: May 28, 2020
    Publication date: May 6, 2021
    Inventors: Kyeong Hwan SHIN, Kyu Su AHN, Dong Il YOO
  • Patent number: 10222664
    Abstract: A liquid crystal display device includes a substrate, a first coupling electrode disposed on the substrate, a first insulating layer disposed on the first coupling electrode, a second coupling electrode disposed on the first insulating layer and capacitively coupled to the first coupling electrode, a second insulating layer disposed on the second coupling electrode, and a pixel electrode including first and second sub-pixel electrodes, which are disposed on the second insulating layer and are electrically insulated from each other, where the first sub-pixel electrode is electrically connected to the first coupling electrode via a first contact hole, which is defined in the first and second insulating layers, and the second sub-pixel electrode is electrically connected to the second coupling electrode via a second contact hole which is defined in the second insulating layer.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: March 5, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Il Joo Kim, Cheol Gon Lee, Gun Woo Yang, Hyun Young Choi, Tae Ho Kang, Chol Ho Kim, Hae Ryeong Park, Dong Il Yoo, Yong Woo Lee, Mee Hye Jung, Joong Gun Chong
  • Patent number: 9846339
    Abstract: A liquid crystal display includes a substrate on which a pixel region is defined, a first sub-pixel electrode in the pixel region on the substrate, an insulating layer on the first sub-pixel electrode, a second sub-pixel electrode in the pixel region on the insulating layer, a floating electrode in the pixel region on the insulating layer and disconnected from the second sub-pixel electrode, a liquid crystal layer on the second sub-pixel electrode and the floating electrode, and a common electrode disposed on the liquid crystal layer. The floating electrode includes first to fourth floating electrodes in first to fourth quadrants of the pixel region, respectively. The first to fourth floating electrodes are separated from one another, and the first sub-pixel electrode partially overlaps the second sub-pixel electrode and the first to fourth floating electrodes.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: December 19, 2017
    Assignee: SAMSUNG DISPLAY CO. LTD.
    Inventors: Tae Ho Kang, Hae Ryeong Park, Yong Jo Kim, Dong Il Yoo, Tae Kyung Yim, Nak Cho Choi
  • Publication number: 20170322468
    Abstract: A liquid crystal display device includes a substrate, a first coupling electrode disposed on the substrate, a first insulating layer disposed on the first coupling electrode, a second coupling electrode disposed on the first insulating layer and capacitively coupled to the first coupling electrode, a second insulating layer disposed on the second coupling electrode, and a pixel electrode including first and second sub-pixel electrodes, which are disposed on the second insulating layer and are electrically insulated from each other, where the first sub-pixel electrode is electrically connected to the first coupling electrode via a first contact hole, which is defined in the first and second insulating layers, and the second sub-pixel electrode is electrically connected to the second coupling electrode via a second contact hole which is defined in the second insulating layer.
    Type: Application
    Filed: November 8, 2016
    Publication date: November 9, 2017
    Inventors: Il Joo KIM, Cheol Gon LEE, Gun Woo YANG, Hyun Young CHOI, Tae Ho KANG, Chol Ho KIM, Hae Ryeong PARK, Dong Il YOO, Yong Woo LEE, Mee Hye JUNG, Joong Gun CHONG
  • Publication number: 20170123280
    Abstract: A liquid crystal display includes a substrate on which a pixel region is defined, a first sub-pixel electrode in the pixel region on the substrate, an insulating layer on the first sub-pixel electrode, a second sub-pixel electrode in the pixel region on the insulating layer, a floating electrode in the pixel region on the insulating layer and disconnected from the second sub-pixel electrode, a liquid crystal layer on the second sub-pixel electrode and the floating electrode, and a common electrode disposed on the liquid crystal layer. The floating electrode includes first to fourth floating electrodes in first to fourth quadrants of the pixel region, respectively. The first to fourth floating electrodes are separated from one another, and the first sub-pixel electrode partially overlaps the second sub-pixel electrode and the first to fourth floating electrodes.
    Type: Application
    Filed: June 15, 2016
    Publication date: May 4, 2017
    Inventors: Tae Ho KANG, Hae Ryeong PARK, Yong Jo KIM, Dong Il YOO, Tae Kyung YIM, Nak Cho CHOI
  • Patent number: 9519194
    Abstract: A liquid crystal display, including: a first substrate; a gate line and a data line disposed on the first substrate; a pixel electrode disposed on the first substrate and including a stem portion and a plurality of branch electrodes that extends obliquely from the stem portion; a second substrate facing the first substrate; and a common electrode disposed on the second substrate, and the pixel electrode further includes a plurality of oblique portions disposed between the plurality of branch electrodes and the stem portion, and the plurality of oblique portions extends in a direction different from a direction in which the plurality of branch electrodes extends.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: December 13, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hee Hwan Lee, Hae Ryeong Park, Dong Il Yoo, Mun-Soo Park, Kyu Su Ahn, Yong Woo Lee
  • Publication number: 20150009442
    Abstract: A liquid crystal display, including: a first substrate; a gate line and a data line disposed on the first substrate; a pixel electrode disposed on the first substrate and including a stem portion and a plurality of branch electrodes that extends obliquely from the stem portion; a second substrate facing the first substrate; and a common electrode disposed on the second substrate, and the pixel electrode further includes a plurality of oblique portions disposed between the plurality of branch electrodes and the stem portion, and the plurality of oblique portions extends in a direction different from a direction in which the plurality of branch electrodes extends.
    Type: Application
    Filed: July 1, 2014
    Publication date: January 8, 2015
    Inventors: Hee Hwan Lee, Hae Ryeong Park, Dong il Yoo, Mun-Soo Park, Kyu Su Ahn, Yong Woo Lee