Patents by Inventor Jae-Cheol Cha

Jae-Cheol Cha 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: 6948992
    Abstract: In a method for forming negative holes of a field emission display, a plurality of line patterns are first printed on a substrate, and then dried. The printing and drying of the line patterns are repeated until the line patterns are elevated to a predetermined height, then dot patterns are printed between the line patterns on the substrate and dried. The printing and drying of the dot patterns are repeated until the dot patterns are elevated to a predetermined height to define the negative holes enclosed by the line and dot patterns, and the line and dot patterns are simultaneously baked.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: September 27, 2005
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jae-Cheol Cha, Kyu-Won Jung, Ho-Su Han
  • Publication number: 20050162068
    Abstract: In a method for forming negative holes of a field emission display, a plurality of line patterns are first printed on a substrate, and then dried. The printing and drying of the line patterns are repeated until the line patterns are elevated to a predetermined height, then dot patterns are printed between the line patterns on the substrate and dried. The printing and drying of the dot patterns are repeated until the dot patterns are elevated to a predetermined height to define the negative holes enclosed by the line and dot patterns, and the line and dot patterns are simultaneously baked.
    Type: Application
    Filed: March 18, 2005
    Publication date: July 28, 2005
    Inventors: Jae-Cheol Cha, Kyu-Won Jung, Ho-Su Han
  • Patent number: 6621232
    Abstract: A field emission display includes a first substrate; a plurality of gate electrodes formed on the first substrate in a predetermined pattern; an insulation layer formed covering the gate electrodes over an entire surface of the first substrate; a plurality of cathode electrodes formed on the insulation layer in a predetermined pattern, a plurality of emitters formed on the cathode electrodes; a plurality of counter electrodes formed on the insulation layer at a predetermined distance from the emitters and in a state of electrical connection to the gate electrodes, the counter electrodes forming an electric field directed toward the emitters; a second substrate provided at a predetermined distance from the first substrate and sealed in a vacuum state with the first substrate; an anode electrode formed on a surface of the second substrate opposing the first substrate; and a plurality of phosphor layers formed over the anode electrode in a predetermined pattern.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: September 16, 2003
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Sung-Ho Jo, You-Jong Kim, Sang-Jo Lee, Jae-Cheol Cha, Jong-Min Kim
  • Publication number: 20030127988
    Abstract: A field emission display includes a first substrate; a plurality of gate electrodes formed on the first substrate in a predetermined pattern; an insulation layer formed covering the gate electrodes over an entire surface of the first substrate; a plurality of cathode electrodes formed on the insulation layer in a predetermined pattern, a plurality of emitters formed on the cathode electrodes; a plurality of counter electrodes formed on the insulation layer at a predetermined distance from the emitters and in a state of electrical connection to the gate electrodes, the counter electrodes forming an electric field directed toward the emitters; a second substrate provided at a predetermined distance from the first substrate and sealed in a vacuum state with the first substrate; an anode electrode formed on a surface of the second substrate opposing the first substrate; and a plurality of phosphor layers formed over the anode electrode in a predetermined pattern.
    Type: Application
    Filed: May 28, 2002
    Publication date: July 10, 2003
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Sung-Ho Jo, You-Jong Kim, Sang-Jo Lee, Jae-Cheol Cha, Jong-Min Kim
  • Publication number: 20030042842
    Abstract: In a method for forming negative holes of a field emission display, a plurality of line patterns are first printed on a substrate, and then dried. The printing and drying of the line patterns are repeated until the line patterns are elevated to a predetermined height, then dot patterns are printed between the line patterns on the substrate and dried. The printing and drying of the dot patterns are repeated until the dot patterns are elevated to a predetermined height to define the negative holes enclosed by the line and dot patterns, and the line and dot patterns are simultaneously baked.
    Type: Application
    Filed: July 18, 2002
    Publication date: March 6, 2003
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Jae-Cheol Cha, Kyu-Won Jung, Ho-Su Han