Patents by Inventor Swen WANG

Swen WANG 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: 10115789
    Abstract: A method for forming a non-volatile memory cell is provided. The method comprises: forming a field region with a first impurity type in a semiconductor substrate, the field region having a first impurity concentration; forming a plurality of spaced apart higher concentration regions with the first impurity type within the field region, the higher concentration regions each having a higher concentration than the first impurity concentration; and forming a plurality of floating gate transistors in the field region between the higher concentration regions.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: October 30, 2018
    Assignee: WAFERTECH, LLC
    Inventor: Swen Wang
  • Publication number: 20160336397
    Abstract: A method for forming a non-volatile memory cell is provided. The method comprises: forming a field region with a first impurity type in a semiconductor substrate, the field region having a first impurity concentration; forming a plurality of spaced apart higher concentration regions with the first impurity type within the field region, the higher concentration regions each having a higher concentration than the first impurity concentration; and forming a plurality of floating gate transistors in the field region between the higher concentration regions.
    Type: Application
    Filed: July 25, 2016
    Publication date: November 17, 2016
    Inventor: Swen WANG
  • Patent number: 9401367
    Abstract: An array of floating gate transistors of a non-volatile memory, NVM, cell includes floating gate transistors separated from one another by high-concentration dopant impurity regions and without using shallow trench isolation (STI) or field oxide (FOX) isolation structures. The array is formed over a substrate portion that includes a continuous and planar upper surface. The high-concentration dopant impurity regions are formed in a P-field region and are formed of the same dopant impurity species as the P-field region but of a higher concentration. The floating gate transistors are split-gate floating gate transistors in some embodiments.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: July 26, 2016
    Assignee: WAFERTECH, LLC
    Inventor: Swen Wang
  • Publication number: 20160093629
    Abstract: An array of floating gate transistors of a non-volatile memory, NVM, cell includes floating gate transistors separated from one another by high-concentration dopant impurity regions and without using shallow trench isolation (STI) or field oxide (FOX) isolation structures. The array is formed over a substrate portion that includes a continuous and planar upper surface. The high-concentration dopant impurity regions are formed in a P-field region and are formed of the same dopant impurity species as the P-field region but of a higher concentration. The floating gate transistors are split-gate floating gate transistors in some embodiments.
    Type: Application
    Filed: September 30, 2014
    Publication date: March 31, 2016
    Inventor: Swen WANG