Patents by Inventor Ru-Sheng Liu

Ru-Sheng Liu 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: 7713846
    Abstract: A process applied to grinding, dicing, and/or stacking semiconductors is disclosed. One of its features is that after transparent material is stuck on its active surface, a semiconductor is ground from another surface thereof to become thinner, then take advantage of transparency of the transparent material to cut the transparent material and the semiconductor, to obtain at least one smaller semiconductor unit such as die or chip. Another feature is that the transparent material remains sticking to the active surface of the die by an adhesion layer until the die is attached to a carrier or another die, and then the transparent material and the adhesion layer are removed by taking advantage of a function of the adhesion layer: receiving a ray to lose adhesion between it and the active surface. Preferably the ray reaches the adhesion layer via the transparent material stuck on the active surface of the die.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: May 11, 2010
    Assignee: Siliconware Precision Industries Co., Ltd.
    Inventors: Ru-Sheng Liu, Han-Lung Tsai, Cheng-Hsu Hsiao
  • Publication number: 20080213980
    Abstract: A process applied to grinding, dicing, and/or stacking semiconductors is disclosed. One of its features is that after transparent material is stuck on its active surface, a semiconductor is ground from another surface thereof to become thinner, then take advantage of transparency of the transparent material to cut the transparent material and the semiconductor, to obtain at least one smaller semiconductor unit such as die or chip. Another feature is that the transparent material remains sticking to the active surface of the die by an adhesion layer until the die is attached to a carrier or another die, and then the transparent material and the adhesion layer are removed by taking advantage of a function of the adhesion layer: receiving a ray to lose adhesion between it and the active surface. Preferably the ray reaches the adhesion layer via the transparent material stuck on the active surface of the die.
    Type: Application
    Filed: April 17, 2008
    Publication date: September 4, 2008
    Applicant: SILICONWARE PRECISION INDUSTRIES CO., LTD.
    Inventors: Ru-Sheng Liu, Han-Lung Tsai, Cheng-Hsu Hsiao
  • Publication number: 20060137420
    Abstract: A process applied to grinding, dicing, and/or stacking semiconductors is disclosed. One feature of the process is that after transparent material is stuck on its active surface, a semiconductor is ground from another surface thereof to become thinner, then the semiconductor is diced, by taking advantage of transparency of the transparent material, from its active surface, to obtain at least one smaller semiconductor unit such as die/dice or chip(s). Another feature is that the transparent material remains sticking to the active surface of the die by an adhesion layer until the die is attached to a carrier or another die, and then the transparent material and the adhesion layer are removed by taking advantage of a function of the adhesion layer: receiving a ray to lose adhesion between it and the active surface. Preferably the ray reaches the adhesion layer via the transparent material stuck on the active surface of the die.
    Type: Application
    Filed: December 27, 2005
    Publication date: June 29, 2006
    Inventors: Ru- Sheng Liu, Han-Lung Tsai, Cheng-Hsu Hsiao