Patents by Inventor George Argos, Jr.

George Argos, Jr. 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: 6190926
    Abstract: A yield enhancement technique for integrated circuit processing which reduces the deleterious effects of H2O contamination which is absorbed by conventional dielectric films resulting in an undesired subsequent out-diffusion of hydrogen when the integrated circuit die is subsequently subjected to relatively high processing temperatures such as those experienced in CERDIP packaging. The technique disclosed comprises the formation of an interlevel dielectric layer having hydrophilic properties (for example, 7.5% phosphorus doped TEOS) at least partially surrounding a device on the integrated circuit which layer is then subjected to an annealing operation to drive off at least a portion of any moisture present therein.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: February 20, 2001
    Assignee: Ramtron International Corporation
    Inventors: Stanley C. Perino, Sanjay Mitra, George Argos, Jr., Holli Harper
  • Patent number: 6150184
    Abstract: A ferroelectric capacitor includes a bottom electrode, a top electrode, an a ferroelectric layer located between the top and bottom electrodes that extends to completely encapsulate the top electrode, except for a contact hole to allow metalization of the top electrode. The total encapsulation of the top electrode reduces the sensitivity of the ferroelectric capacitor to hydrogen and thus improves electrical switching performance. The encapsulation technique can also be used to improve the performance of ferroelectric transistors and other devices.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: November 21, 2000
    Assignee: Ramtron International Corporation
    Inventors: Thomas A. Evans, George Argos, Jr.
  • Patent number: 6027947
    Abstract: A ferroelectric capacitor includes a bottom electrode, a top electrode, and a ferroelectric layer located between the top and bottom electrodes that extends to completely encapsulate the top electrode, except for a contact hole to allow metalization of the top electrode. The total encapsulation of the top electrode reduces the sensitivity of the ferroelectric capacitor to hydrogen and thus improves electrical switching performance. The encapsulation technique can also be used to improve the performance of ferroelectric transistors and other devices.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: February 22, 2000
    Assignee: Ramtron International Corporation
    Inventors: Thomas A. Evans, George Argos, Jr.
  • Patent number: 5990513
    Abstract: A yield enhancement technique for integrated circuit processing which reduces the deleterious effects of H.sub.2 O contamination which is absorbed by conventional dielectric films resulting in an undesired subsequent out-diffusion of hydrogen when the integrated circuit die is subsequently subjected to relatively high processing temperatures such as those experienced in CERDIP packaging. The technique disclosed comprises the formation of an interlevel dielectric layer having hydrophilic properties (for example, 7.5% phosphorus doped TEOS) at least partially surrounding a device on the integrated circuit which layer is then subjected to an annealing operation to drive off at least a portion of any moisture present therein.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: November 23, 1999
    Assignee: Ramtron International Corporation
    Inventors: Stanley C. Perino, Sanjay Mitra, George Argos, Jr., Holli Harper
  • Patent number: 5920453
    Abstract: A ferroelectric capacitor includes a bottom electrode, a top electrode, and a ferroelectric layer located between the top and bottom electrodes that extends to completely encapsulate the top electrode, except for a contact hole to allow metalization of the top electrode. The total encapsulation of the top electrode reduces the sensitivity of the ferroelectric capacitor to hydrogen and thus improves electrical switching performance.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: July 6, 1999
    Assignee: Ramtron International Corporation
    Inventors: Thomas A. Evans, George Argos, Jr.
  • Patent number: 5864932
    Abstract: A ferroelectric capacitor includes a bottom electrode, a top electrode, and a ferroelectric layer located between the top and bottom electrodes that extends to completely encapsulate the top electrode, except for a contact hole to allow metalization of the top electrode. The total encapsulation of the top electrode reduces the sensitivity of the ferroelectric capacitor to hydrogen and thus improves electrical switching performance.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: February 2, 1999
    Assignee: Ramtron International Corporation
    Inventors: Thomas A. Evans, George Argos, Jr.
  • Patent number: 5578867
    Abstract: A method for passivating an integrated circuit includes the RF sputtering of a hard passivation layer on the surface of the integrated circuit. The hard passivation layer can be a ceramic material such as various doped and undoped titanates, zirconates, niobates, tantalates, stanates, hafnates, and manganates, in either their ferroelectric or non-ferroelectric phases. Other exotic, hard, and usually non-ferroelectric materials not normally found in integrated circuit processing such as carbides may also be used. If the integrated circuit sought to be passivated contains ferroelectric devices, the hard passivation layer can be fabricated out of the same material used in the integrated ferroelectric devices. An optional silicon dioxide insulating layer can be deposited on the surface of the integrated circuit before the hard passivation layer is deposited. The optional silicon dioxide layer is used to prevent any possible contamination of the integrated circuit by the passivation layer.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: November 26, 1996
    Assignee: Ramtron International Corporation
    Inventors: George Argos, Jr., John D. Spano, Steven D. Traynor
  • Patent number: 5438023
    Abstract: A method for passivating an integrated circuit includes the RF sputtering of a hard passivation layer on the surface of the integrated circuit. The hard passivation layer can be a ceramic material such as various doped and undoped titanates, zirconates, niobates, tantalates, stanates, hafnates, and manganates, in either their ferroelectric or non-ferroelectric phases. Other exotic, hard, and usually non-ferroelectric materials not normally found in integrated circuit processing such as carbides may also be used. If the integrated circuit sought to be passivated contains ferroelectric devices, the hard passivation layer can be fabricated out of the same material used in the integrated ferroelectric devices. An optional silicon dioxide insulating layer can be deposited on the surface of the integrated circuit before the hard passivation layer is deposited. The optional silicon dioxide layer is used to prevent any possible contamination of the integrated circuit by the passivation layer.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: August 1, 1995
    Assignee: Ramtron International Corporation
    Inventors: George Argos, Jr., John D. Spano, Steven D. Traynor
  • Patent number: 5338951
    Abstract: A capacitor for a semiconductor structure is formed having a substrate, a stack of a buffer layer and a layer of ferroelectric material, and a top electrode. The capacitor can also have a layer of polysilicon between the substrate and the buffer layer. A method for forming the same, through establishing a substrate, a buffer layer and a layer of ferroelectric material, defining and annealing the buffer layer and layer of ferroelectric material, and establishing a top electrode, is also disclosed.
    Type: Grant
    Filed: November 6, 1991
    Date of Patent: August 16, 1994
    Assignee: Ramtron International Corporation
    Inventors: George Argos, Jr., Thottam S. Kalkur