Patents by Inventor Hao-Wei Liang

Hao-Wei Liang 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: 6675704
    Abstract: A solder paste stenciling apparatus for minimizing residue of solder paste includes a stencil having multiple stencil openings defined therein, a supporting member retaining the stencil, and a vibrator for vibrating the stencil. In operation, a substrate is engaged to a bottom surface of the stencil, and solder paste is applied onto a top surface of the stencil so that the stencil openings are filled with the solder paste. The substrate is then slowly separated from the stencil while the vibrator vibrates the stencil to evacuate the solder paste out of the stencil openings and to further deposit on the substrate. Hence, the amount of residual solder paste adhered to inner surfaces defining the stencil openings is minimized.
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: January 13, 2004
    Assignee: Compeq Manufacturing Company Limited
    Inventors: Cheng-Yuan Lin, Sheng-Long Wu, Te-Chang Huang, Hao-Wei Liang, Pin-Hsuan Chang
  • Publication number: 20030167941
    Abstract: A solder paste stenciling apparatus for minimizing residue of solder paste includes a stencil having multiple stencil opens defined therein, a supporting member retaining the stencil, and a vibrator for vibrating the stencil. In operation, a substrate is engaged to a bottom surface of the stencil, and solder paste is applied onto a top surface of the stencil so that the stencil opens are filled with the solder paste. The substrate is then slowly separated from the stencil while the vibrator vibrates the stencil to evacuate the solder paste out of the stencil opens and to further deposit on the substrate. Hence, the amount of residual solder paste adhered to inner surfaces defining the stencil opens is minimized.
    Type: Application
    Filed: March 6, 2002
    Publication date: September 11, 2003
    Inventors: Cheng-Yuan Lin, Sheng-Long Wu, Te-Chang Huang, Hao-Wei Liang, Pin-Hsuan Chang