Patents by Inventor Myung-Woon Choi

Myung-Woon Choi 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: 7976636
    Abstract: Disclosed is a multiple nozzle evaporator in which a material to be evaporated in the evaporator can be deposited on a substrate with an improved efficiency of use of the material, thereby forming a large-area uniform thin film. The evaporator includes a rectangular post-shaped crucible with an open top face; and a nozzle having a body portion having a rectangular post-like shape with a height smaller than that of the crucible and assembled to an upper portion of the crucible, and a plurality of evaporation tubes penetrating through the body portion between top and bottom faces of the body portion. The evaporation tubes are divided into four groups of which evaporation tubes are inclined toward respective four corners of a top face of the nozzle unit.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: July 12, 2011
    Assignee: Yas Co., Ltd.
    Inventors: Seong-Moon Kim, Kwang-Ho Jeong, Myung-Woon Choi, Hyung-Won Park
  • Publication number: 20110023783
    Abstract: Disclosed is a multiple nozzle evaporator in which a material to be evaporated in the evaporator can be deposited on a substrate with an improved efficiency of use of the material, thereby forming a large-area uniform thin film. The evaporator includes a rectangular post-shaped crucible with an open top face; and a nozzle having a body portion having a rectangular post-like shape with a height smaller than that of the crucible and assembled to an upper portion of the crucible, and a plurality of evaporation tubes penetrating through the body portion between top and bottom faces of the body portion. The evaporation tubes are divided into four groups of which evaporation tubes are inclined toward respective four corners of a top face of the nozzle unit.
    Type: Application
    Filed: October 7, 2010
    Publication date: February 3, 2011
    Applicant: YAS Co., Ltd.
    Inventors: Seong-Moon Kim, Kwang-Ho Jeong, Myung-Woon Choi, Hyung-Won Park
  • Patent number: 7833354
    Abstract: Disclosed is a multiple nozzle evaporator in which a material to be evaporated in the evaporator can be deposited on a substrate with an improved efficiency of use of the material, thereby forming a large-area uniform thin film. The evaporator includes a cylindrical or rectangular post-shaped crucible 31 or 51 with an open top face; and a nozzle unit 32 having a body portion having a cylindrical or rectangular post-like shape with a height smaller than that of the crucible 31 or 51 and assembled to an upper portion of the crucible, and a plurality of evaporation tubes formed at an angle while penetrating through the body portion between top and bottom faces of the body portion. An evaporated material spouts toward peripheral areas of a substrate due to the inclined evaporation tubes, thereby improving the uniformity of a thin film to be deposited and the efficiency of use of the evaporated material, and preventing condensation of the evaporated material at a spouting portion.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: November 16, 2010
    Assignee: Yas Co., Ltd.
    Inventors: Seong-Moon Kim, Kwang-Ho Jeong, Myung-Woon Choi, Hyung-Won Park
  • Publication number: 20090229524
    Abstract: Disclosed is a multiple nozzle evaporator in which a material to be evaporated in the evaporator can be deposited on a substrate with an improved efficiency of use of the material, thereby forming a large-area uniform thin film. The evaporator includes a cylindrical or rectangular post-shaped crucible 31 or 51 with an open top face: and a nozzle unit 32 having a body portion having a cylindrical or rectangular post-like shape with a height smaller than that of the crucible 31 or 51 and assembled to an upper portion of the crucible, and a plurality of evaporation tubes formed at an angle while penetrating through the body portion between top and bottom feces of the body portion. An evaporated material spouts toward peripheral areas of a substrate due to the inclined evaporation tubes, thereby improving the uniformity of a thin film to be deposited and the efficiency of use of the evaporated material and preventing condensation of the evaporated material at a spouting portion.
    Type: Application
    Filed: July 3, 2007
    Publication date: September 17, 2009
    Applicant: YAS CO., LTD.
    Inventors: Seong-Moon Kim, Kwang-Ho Jeong, Myung-Woon Choi, Hyung-Won Park