Patents by Inventor Goo-Yun Chung

Goo-Yun Chung 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: 20100176084
    Abstract: Disclosed is a squeeze for a screen printer. The present invention provides a squeeze for a screen printer, which coats a printed circuit board with an adhesive paste while moving parallel over a metal mask on the printed circuit board, the printed circuit board being open through an opening of the metal mask, the squeeze including a solvent storage unit for storing solvents; and solvent discharging holes for discharging the solvents, stored in the solvent storage unit, to an adhesive paste. Accordingly, the squeeze for a screen printer of the present invention may be useful to prevent a dog ear phenomenon, namely that an adhesive paste layer is asymmetrically formed in an indented manner, by controlling a viscosity of an adhesive paste by discharging a solvent onto an adhesive paste layer that comes in contact with the squeeze when the adhesive paste layer is formed in the printed circuit board.
    Type: Application
    Filed: March 25, 2010
    Publication date: July 15, 2010
    Inventors: Young-Ju KANG, Joon-Mo SEO, Goo-Yun CHUNG, Jeong-Ill CHOI, Seong-Hwan JANG
  • Patent number: 7743701
    Abstract: Disclosed is a squeeze for a screen printer. The present invention provides a squeeze for a screen printer, which coats a printed circuit board with an adhesive paste while moving parallel over a metal mask on the printed circuit board, the printed circuit board being open through an opening of the metal mask, the squeeze including a solvent storage unit for storing solvents; and solvent discharging holes for discharging the solvents, stored in the solvent storage unit, to an adhesive paste. Accordingly, the squeeze for a screen printer of the present invention may be useful to prevent a dog ear phenomenon, namely that an adhesive paste layer is asymmetrically formed in an indented manner, by controlling a viscosity of an adhesive paste by discharging a solvent onto an adhesive paste layer that comes in contact with the squeeze when the adhesive paste layer is formed in the printed circuit board.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: June 29, 2010
    Assignee: LG Innotek Co., Ltd.
    Inventors: Young-Ju Kang, Joon-Mo Seo, Goo-Yun Chung, Jeong-Ill Choi, Seong-Hwan Jang
  • Publication number: 20070199456
    Abstract: Disclosed is a squeeze for a screen printer. The present invention provides a squeeze for a screen printer, which coats a printed circuit board with an adhesive paste while moving parallel over a metal mask on the printed circuit board, the printed circuit board being open through an opening of the metal mask, the squeeze including a solvent storage unit for storing solvents; and solvent discharging holes for discharging the solvents, stored in the solvent storage unit, to an adhesive paste. Accordingly, the squeeze for a screen printer of the present invention may be useful to prevent a dog ear phenomenon, namely that an adhesive paste layer is asymmetrically formed in an indented manner, by controlling a viscosity of an adhesive paste by discharging a solvent onto an adhesive paste layer that comes in contact with the squeeze when the adhesive paste layer is formed in the printed circuit board.
    Type: Application
    Filed: February 22, 2007
    Publication date: August 30, 2007
    Inventors: Young-Ju Kang, Joon-Mo Seo, Goo-Yun Chung, Jeong-Ill Choi, Seong-Hwan Jang
  • Publication number: 20070101877
    Abstract: A dual printing mask is used for coating a die adhering paste of a predetermined pattern on a substrate uniformly during a semiconductor packaging process. This dual printing mask includes a metal mask layer having a predetermined pattern of openings so as to receive a paste for adhering a semiconductor die onto a substrate, and a mesh layer integrally attached on the metal mask layer.
    Type: Application
    Filed: November 3, 2006
    Publication date: May 10, 2007
    Inventors: Joon-Mo Seo, Byoung-Un Kang, Kyung-Tae Wi, Jae-Hoon Kim, Tae-Hyun Sung, Goo-Yun Chung, Seong-Hwan Jang, Tae-Kyu Im