Patents by Inventor Kiang-Kai Han

Kiang-Kai Han 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).

  • Deep trench isolation of embedded DRAM for improved latch-up immunity
    Patent number: 7138319
    Abstract: A protective structure for blocking the propagation of defects generated in a semiconductor device is disclosed. In an exemplary embodiment, the structure includes a deep trench isolation formed between a memory storage region of the semiconductor device and a logic circuit region of the semiconductor device, the deep trench isolation being filled with an insulative material. The deep trench isolation thereby prevents the propagation of crystal defects generated in the logic circuit region from propagating into the memory storage region.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: November 21, 2006
    Assignee: International Business Machines Corporation
    Inventors: Tze-Chiang Chen, Kiang-Kai Han