Patents by Inventor Thitima Suwannasiri

Thitima Suwannasiri 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).

  • Multilayered bottom electrode for MTJ-containing devices
    Patent number: 11189782
    Abstract: A multilayered bottom electrode for a magnetic tunnel junction (MTJ) containing device is provided that includes, from bottom to top, a base segment having a first diameter and composed of a remaining portion of a first bottom electrode metal-containing layer, a middle segment having a second diameter and composed of a remaining portion of a second bottom electrode metal-containing layer, and an upper segment having a third diameter and composed of a remaining portion of a third bottom electrode metal-containing layer, wherein the first diameter is greater than the second diameter, and the third diameter is equal to, or less than, the second diameter. The wider base segment of each multilayered bottom electrode prevents tilting and/or bowing of the resultant bottom electrode. Thus, a stable bottom electrode is provided.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: November 30, 2021
    Assignee: International Business Machines Corporation
    Inventors: Bruce B. Doris, Thitima Suwannasiri, Nathan P. Marchack, Pouya Hashemi
  • MULTILAYERED BOTTOM ELECTRODE FOR MTJ-CONTAINING DEVICES
    Publication number: 20210066578
    Abstract: A multilayered bottom electrode for a magnetic tunnel junction (MTJ) containing device is provided that includes, from bottom to top, a base segment having a first diameter and composed of a remaining portion of a first bottom electrode metal-containing layer, a middle segment having a second diameter and composed of a remaining portion of a second bottom electrode metal-containing layer, and an upper segment having a third diameter and composed of a remaining portion of a third bottom electrode metal-containing layer, wherein the first diameter is greater than the second diameter, and the third diameter is equal to, or less than, the second diameter. The wider base segment of each multilayered bottom electrode prevents tilting and/or bowing of the resultant bottom electrode. Thus, a stable bottom electrode is provided.
    Type: Application
    Filed: August 27, 2019
    Publication date: March 4, 2021
    Inventors: Bruce B. Doris, Thitima Suwannasiri, Nathan P. Marchack, Pouya Hashemi