Patents by Inventor Roger Y. Tsai

Roger Y. Tsai 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: 7831941
    Abstract: A methodology for obtaining improved prediction of CA resistance in electronic circuits and, particularly, an improved CA resistance model adapted to capture larger than anticipated “out of spec” regime. In one embodiment, a novel bucketization scheme is implemented that is codified to provide a circuit designer with considerably better design options for handling large CA variability as seen through the design manual. The tools developed for modeling the impact of CA variable resistance phenomena provide developers with a resistance model, such as conventionally known, modified with a new CA model Basis including a novel CA intrinsic resistance model, and, a novel CA layout bucketization model.
    Type: Grant
    Filed: January 2, 2008
    Date of Patent: November 9, 2010
    Assignee: International Business Machines Corporation
    Inventors: Dureseti Chidambarrao, Fook-Luen Heng, Mark A. Lavin, Jin-Fuw Lee, Rama N. Singh, Roger Y. Tsai
  • Publication number: 20090171644
    Abstract: A methodology for obtaining improved prediction of CA resistance in electronic circuits and, particularly, an improved CA resistance model adapted to capture larger than anticipated “out of spec” regime. In one embodiment, a novel bucketization scheme is implemented that is codified to provide a circuit designer with considerably better design options for handling large CA variability as seen through the design manual. The tools developed for modeling the impact of CA variable resistance phenomena provide developers with a resistance model, such as conventionally known, modified with a new CA model Basis including a novel CA intrinsic resistance model, and, a novel CA layout bucketization model.
    Type: Application
    Filed: January 2, 2008
    Publication date: July 2, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Dureseti Chidambarrao, Fook-Luen Heng, Mark A. Lavin, Jin-Fuw Lee, Rama N. Singh, Roger Y. Tsai
  • Patent number: 7217655
    Abstract: A composite material comprising a layer containing copper, and an electrodeposited CoWP film on the copper layer. The CoWP film contains from 11 atom percent to 25 atom percent phosphorus and has a thickness from 5 nm to 200 nm. The invention is also directed to a method of making an interconnect structure comprising: providing a trench or via within a dielectric material, and a conducting metal containing copper within the trench or the via; and forming a CoWP film by electrodeposition on the copper layer. The CoWP film contains from 10 atom percent to 25 atom percent phosphorus and has a thickness from 5 nm to 200 nm. The invention is also directed to a interconnect structure comprising a dielectric layer in contact with a metal layer; an electrodeposited CoWP film on the metal layer, and a copper layer on the CoWP film.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: May 15, 2007
    Assignee: International Business Machines Corporation
    Inventors: Cyril Cabral, Jr., Stefanie R. Chiras, Emanuel I. Cooper, Hariklia Deligianni, Andrew J. Kellock, Judith M. Rubino, Roger Y. Tsai
  • Patent number: 7193323
    Abstract: A composite material comprising a layer containing copper, and an electrodeposited CoWP film on the copper layer. The CoWP film contains from 11 atom percent to 25 atom percent phosphorus and has a thickness from 5 nm to 200 nm. The invention is also directed to a method of making an interconnect structure comprising: providing a trench or via within a dielectric material, and a conducting metal containing copper within the trench or the via; and forming a CoWP film by electrodeposition on the copper layer. The CoWP film contains from 10 atom percent to 25 atom percent phosphorus and has a thickness from 5 nm to 200 nm. The invention is also directed to a interconnect structure comprising a dielectric layer in contact with a metal layer; an electrodeposited CoWP film on the metal layer, and a copper layer on the CoWP film.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: March 20, 2007
    Assignee: International Business Machines Corporation
    Inventors: Cyril Cabral, Jr., Stefanie R. Chiras, Emanuel Cooper, Hariklia Deligianni, Andrew J. Kellock, Judith M. Rubino, Roger Y. Tsai