Patents by Inventor Yoon Lae Cho

Yoon Lae Cho 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).

  • Shadow mask in color CRT
    Patent number: 6717342
    Abstract: Shadow mask in a color CRT including an electron reflective film formed, starting from a surface of the shadow mask, down to an inside surface of each of holes, or an electron reflective film formed on a surface of the shadow mask facing an electron gun, or on the surface of the shadow mask and an inside tapered surfaces of holes of the shadow mask and another electron reflective film formed on a surface of the electron reflective film formed on the shadow mask facing an electron gun, thereby reducing thermal deformation of the shadow mask, with a consequential reduction of doming, that prevents mislanding of the electron beams, color dispersion of the color CRT, to improve a color purity.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: April 6, 2004
    Assignee: LG Electronics Inc.
    Inventors: Yeoung Ku Kim, Sang Mun Kim, Yoon Lae Cho
  • Shadow mask in color CRT
    Publication number: 20020043917
    Abstract: Shadow mask in a color CRT including an electron reflective film formed, starting from a surface of the shadow mask, down to an inside surface of each of holes, or an electron reflective film formed on a surface of the shadow mask facing an electron gun, or on the surface of the shadow mask and an inside tapered surfaces of holes of the shadow mask and another electron reflective film formed on a surface of the electron reflective film formed on the shadow mask facing an electron gun, thereby reducing thermal deformation of the shadow mask, with a consequential reduction of doming, that prevents mislanding of the electron beams, color dispersion of the color CRT, to improve a color purity.
    Type: Application
    Filed: August 28, 2001
    Publication date: April 18, 2002
    Applicant: LG Electronics, Inc.
    Inventors: Yeoung Ku Kim, Sang Mun Kim, Yoon Lae Cho