Patents by Inventor Dong-Ha YOO

Dong-Ha 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).

  • Publication number: 20250048799
    Abstract: A light emitting element that includes a first semiconductor layer; a second semiconductor layer disposed on the first semiconductor layer; an active layer disposed between the first semiconductor layer and the second semiconductor layer; a first insulating film at least partially surrounding the first semiconductor layer, the second semiconductor layer, and the active layer; a second insulating film surrounding the first insulating film; and a third insulating film surrounding the second insulating film, wherein a bond dissociation energy of the second insulating film may be less than each of a bond dissociation energy of the first insulating film and a bond dissociation energy of the third insulating film.
    Type: Application
    Filed: February 13, 2024
    Publication date: February 6, 2025
    Applicant: Samsung Display Co., LTD.
    Inventors: In Hyuk KIM, Dae Hyun KIM, Dong Kyun SEO, Young Chul SIM, Chul Jong YOO, Tae Ha JIN, Hyeong Su CHOI
  • Patent number: 12203005
    Abstract: Provided is a conductive material dispersion comprising single-walled carbon nanotubes, a dispersant, a dispersion aid, and a dispersion medium, wherein the dispersant comprises polyvinyl butyral and hydrogenated nitrile butadiene rubber, and the dispersion aid comprises a compound represented by Formula 1. A-(R)n??[Formula 1] In Formula 1, A is a structure having a carbon number of 16 to 50 carbon number and comprising four or more aromatic rings and nitrogen, R is a structure comprising an anionic functional group, and n is an integer of 1 to 5.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: January 21, 2025
    Assignee: LG Energy Solution, Ltd.
    Inventors: Hyo Sook Joo, Houng Sik Yoo, Dong Hyun Kim, Il Jae Moon, Hyeon Choi, Woo Ha Kim, Sung Soo Yoon
  • Patent number: 9298040
    Abstract: An LCD device includes a liquid crystal panel; a first polarizer attached to a first surface of the liquid crystal panel and including a first polarizing film, first and second optical compensation films disposed on one surface of the first polarizing film, and a phase retardation film, a protective film and a functional film disposed on another surface of the first polarizing film; and a second polarizer attached to a second surface of the liquid crystal panel and including a second polarizing film, an inner protective film disposed on one surface of the second polarizing film, and an outer protective film disposed on another surface of the second polarizing film, wherein the first polarizing film is disposed between the phase retardation film and the liquid crystal panel, and the phase retardation film has a retardation value of ?/4.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: March 29, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sang-Woong Choi, Jeong-Hoon Ko, Hyoun-Sung Son, Eun-Jung Kim, Dong-Ha Yoo
  • Patent number: 9268173
    Abstract: An LCD device includes a liquid crystal panel; a first polarizer attached to a first surface of the liquid crystal panel and including a first polarizing film, first and second optical compensation films disposed on one surface of the first polarizing film, and a phase retardation film, a protective film and a functional film disposed on another surface of the first polarizing film; and a second polarizer attached to a second surface of the liquid crystal panel and including a second polarizing film, an inner protective film disposed on one surface of the second polarizing film, and an outer protective film disposed on another surface of the second polarizing film, wherein the first polarizing film is disposed between the phase retardation film and the liquid crystal panel, and the phase retardation film has a retardation value of ?/4.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: February 23, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sang-Woong Choi, Jeong-Hoon Ko, Hyoun-Sung Son, Eun-Jung Kim, Dong-Ha Yoo
  • Publication number: 20140192297
    Abstract: An LCD device includes a liquid crystal panel; a first polarizer attached to a first surface of the liquid crystal panel and including a first polarizing film, first and second optical compensation films disposed on one surface of the first polarizing film, and a phase retardation film, a protective film and a functional film disposed on another surface of the first polarizing film; and a second polarizer attached to a second surface of the liquid crystal panel and including a second polarizing film, an inner protective film disposed on one surface of the second polarizing film, and an outer protective film disposed on another surface of the second polarizing film, wherein the first polarizing film is disposed between the phase retardation film and the liquid crystal panel, and the phase retardation film has a retardation value of ?/4.
    Type: Application
    Filed: December 30, 2013
    Publication date: July 10, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Sang-Woong CHOI, Jeong-Hoon KO, Hyoun-Sung SON, Eun-Jung KIM, Dong-Ha YOO