Patents by Inventor Tyler A. Lowrey

Tyler A. Lowrey 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: 6989580
    Abstract: A process for manufacturing an array of cells, including: implanting, in a body of semiconductor material of a first conductivity type, a common conduction region of the first conductivity type; forming, in the body, above the common conduction region, a plurality of active area regions of a second conductivity type and a first doping level; forming, on top of the body, an insulating layer having first and second openings; implanting first portions of the active area regions through the first openings with a doping agent of the first conductivity type, thereby forming, in the active area regions, second conduction regions of the first conductivity type; implanting second portions of the active area regions through the second openings with a doping agent of the second conductivity type, thereby forming control contact regions of the second conductivity type and a second doping level, higher than the first doping level; forming, on top of the body, a plurality of storage components, each storage component havin
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: January 24, 2006
    Assignees: STMicroelectronics S.r.l., Ovonyx, Inc.
    Inventors: Fabio Pellizzer, Giulio Casagrande, Roberto Gastaldi, Loris Vendrame, Augusto Benvenuti, Tyler Lowrey
  • Publication number: 20060013034
    Abstract: A method of customizing an integrated circuit chip, comprising the steps of: providing an electronic circuit on said chip; providing a phase-change memory on the chip; storing information about said electronic circuit in the phase-change memory. A method of operating an optical display.
    Type: Application
    Filed: September 19, 2005
    Publication date: January 19, 2006
    Inventors: Tyler Lowrey, Guy Wicker, Edward Spall
  • Patent number: 6987688
    Abstract: An integrated circuit chip, comprising: an electronic device; and a phase-change memory storing information of said electronic device. A method of customizing an integrated circuit chip, comprising the steps of: providing an electronic circuit on said chip; providing a phase-change memory on said chip; storing information about said electronic circuit in said phase-change memory.
    Type: Grant
    Filed: June 11, 2003
    Date of Patent: January 17, 2006
    Assignee: Ovonyx, Inc.
    Inventors: Tyler Lowrey, Guy C. Wicker
  • Publication number: 20060008975
    Abstract: A method of making a vertical diode is provided, the vertical dioxide having associated therewith a diode opening extending through an insulation layer and contacting an active region on a silicon wafer. A titanium silicide layer covers the interior surface of the diode opening and contacts the active region. The diode opening is initially filled with an amorphous silicon plug that is doped during deposition and subsequently recrystallized to form large grain polysilicon. The silicon plug has a top portion that is heavily doped with a first type dopant and a bottom portion that is lightly doped with a second type dopant. The top portion is bounded by the bottom portion so as not to contact the titanium silicide layer. For one embodiment of the vertical diode, a programmable resistor contacts the top portion of the silicon plug and a metal line contacts the programmable resistor.
    Type: Application
    Filed: August 24, 2005
    Publication date: January 12, 2006
    Inventors: Fernando Gonzalez, Tyler Lowrey, Trung Doan, Raymond Turi, Graham Wolstenholme
  • Publication number: 20060006443
    Abstract: A programmable resistance memory element having a conductive layer as an electrode. The conductive layer and memory material may have a small area of contact. In one embodiment, the conductive layer may be cup-shaped. In one embodiment, the memory element may include a chalcogenide material.
    Type: Application
    Filed: September 8, 2005
    Publication date: January 12, 2006
    Inventors: Tyler Lowrey, Stephen Hudgens, Patrick Klersy
  • Publication number: 20050280117
    Abstract: A method of making a vertical diode is provided, the vertical dioxide having associated therewith a diode opening extending through an insulation layer and contacting an active region on a silicon wafer. A titanium silicide layer covers the interior surface of the diode opening and contacts the active region. The diode opening is initially filled with an amorphous silicon plug that is doped during deposition and subsequently recrystallized to form large grain polysilicon. The silicon plug has a top portion that is heavily doped with a first type dopant and a bottom portion that is lightly doped with a second type dopant. The top portion is bounded by the bottom portion so as not to contact the titanium silicide layer. For one embodiment of the vertical diode, a programmable resistor contacts the top portion of the silicon plug and a metal line contacts the programmable resistor.
    Type: Application
    Filed: August 24, 2005
    Publication date: December 22, 2005
    Inventors: Fernando Gonzalez, Tyler Lowrey, Trung Doan, Raymond Turi, Graham Wolstenholme
  • Patent number: 6969866
    Abstract: A memory element comprising a volume of phase change memory material; and first and second contact for supplying an electrical signal to the memory material, wherein the first contact comprises a conductive sidewall spacer. Alternately, the first contact may comprise a contact layer having an edge adjacent to the memory material.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: November 29, 2005
    Assignee: Ovonyx, Inc.
    Inventors: Tyler Lowrey, Stanford R. Ovshinsky, Guy C. Wicker, Patrick J. Klersy, Boil Pashmakov, Wolodymyr Czubatyj, Sergey A. Kostylev
  • Patent number: 6961258
    Abstract: In an aspect, an apparatus is provided that sets and reprograms the state of programmable devices. In an aspect, the quantity of programmable material is minimized, and the programmable material that is reprogrammed from an amorphous to a crystalline state, and vice versa, is localized on a contact. In an aspect, a method is provided such that an opening is formed through a dielectric exposing a contact formed on a substrate. A spacer is formed within the opening and a programmable material is formed within the opening such that the spacer reduces the programmable material on the contact. A conductor is formed on the programmable material and the contact transmits to a signal line.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: November 1, 2005
    Assignee: Ovonyx, Inc.
    Inventor: Tyler A. Lowrey
  • Patent number: 6953743
    Abstract: A contact structure is provided incorporating an amorphous titanium nitride barrier layer formed via low-pressure chemical vapor deposition (LPCVD) utilizing tetrakis-dialkylamido-titanium, Ti(NMe2)4, as the precursor. The contact structure is fabricated by etching a contact opening through a dielectric layer down to a diffusion region to which electrical contact is to be made. Titanium metal is deposited over the surface of the wafer so that the exposed surface of the diffusion region is completely covered by a layer of the metal. At least a portion of the titanium metal layer is eventually converted to titanium silicide, thus providing an excellent conductive interface at the surface of the diffusion region. A titanium nitride barrier layer is then deposited using the LPCVD process, coating the walls and floor of the contact opening. Chemical vapor deposition of polycrystalline silicon or of a metal follows.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: October 11, 2005
    Assignee: Micron Technology, Inc.
    Inventors: Gurtej S. Sandhu, Trung T. Doan, Tyler A. Lowrey
  • Publication number: 20050212070
    Abstract: A method for forming a floating gate semiconductor device such as an electrically erasable programmable read only memory is provided. The device includes a silicon substrate having an electrically isolated active area. A gate oxide, as well as other components of a FET (e.g., source, drain) are formed in the active area. A self aligned floating gate is formed by depositing a conductive layer (e.g., polysilicon) into the recess and over the gate oxide. The conductive layer is then chemically mechanically planarized to an endpoint of the isolation layer so that all of the conductive layer except material in the recess and on the gate oxide is removed. Following formation of the floating gate an insulating layer is formed on the floating gate and a control gate is formed on the insulating layer.
    Type: Application
    Filed: June 1, 2005
    Publication date: September 29, 2005
    Inventors: Trung Doan, Tyler Lowrey
  • Publication number: 20050201136
    Abstract: An electrically programmable memory element comprising a programmable resistance memory material. In one embodiment, the memory element has a cup-shaped electrical contact. A portion of the rim of the electrical contact is recessed below another portion of the rim.
    Type: Application
    Filed: May 5, 2005
    Publication date: September 15, 2005
    Inventors: Tyler Lowrey, Stephen Hudgens, Patrick Klersy
  • Patent number: 6943365
    Abstract: An electrically operated programmable resistance memory element having a conductive layer as an electrical contact. The conductive layer has a raised portion extending from an edge of the layer to an end adjacent the memory material.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: September 13, 2005
    Assignee: Ovonyx, Inc.
    Inventors: Tyler Lowrey, Stephen J. Hudgens, Patrick Klersy
  • Patent number: 6941124
    Abstract: An amplifier powered by a selectively engageable voltage source and a method for operating the amplifier. The amplifier includes first and second electrodes for receiving an input signal to be amplified. The first and second electrodes are adapted to be respectively connected to coupling capacitors. The amplifier also includes a differential amplifier having inputs respectively connected to the first and second electrodes, and having an output. The amplifier additionally includes selectively engageable resistances coupled between the voltage source and respective inputs of the differential amplifier and defining, with the coupling capacitors, the high pass characteristics of the circuit. The amplifier further includes second selectively engageable resistances coupled between the voltage source and respective inputs of the differential amplifier.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: September 6, 2005
    Assignee: Micron Technology, Inc.
    Inventors: James E. O'Toole, John R. Tuttle, Mark E. Tuttle, Tyler Lowrey, Kevin M. Devereaux, George E. Pax, Brian P. Higgins, David K. Ovard, Shu-Sun Yu, Robert R. Rotzoll
  • Publication number: 20050191819
    Abstract: Methods of forming capacitors, methods of forming capacitor-over-bit line memory circuitry, and related integrated circuitry constructions are described. In one embodiment, a capacitor storage node is formed having an uppermost surface and an overlying insulative material over the uppermost surface. Subsequently, a capacitor dielectric functioning region is formed discrete from the overlying insulative material operably proximate at least a portion of the capacitor storage node. A cell electrode layer is formed over the capacitor dielectric functioning region and the overlying insulative material.
    Type: Application
    Filed: July 25, 2003
    Publication date: September 1, 2005
    Inventors: Tyler Lowrey, Luan Tran, Alan Reinberg, D. Durcan
  • Publication number: 20050180216
    Abstract: A memory may have access devices formed using a chalcogenide material. The access device does not induce a snapback voltage sufficient to cause read disturbs in the associated memory element being accessed. In the case of phase change memory elements, the snapback voltage may be less than the threshold voltage of the phase change memory element.
    Type: Application
    Filed: April 11, 2005
    Publication date: August 18, 2005
    Inventor: Tyler Lowrey
  • Patent number: 6927093
    Abstract: A method of making an electrically operated programmable resistance memory element. A sidewall spacer is used as a mask to form a raised portion of a conductive layer. A programmable resistance material is formed in electrical contact with the raised portion.
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: August 9, 2005
    Assignee: Ovonyx, Inc.
    Inventors: Tyler Lowrey, Patrick Klersy, Stephen J. Hudgens, Jon Maimon
  • Patent number: 6919578
    Abstract: In an aspect, an apparatus is provided that sets and reprograms the state of programmable devices. In an aspect, a method is provided such that an opening is formed through a dielectric exposing a contact, the contact formed on a substrate. An electrode is conformally deposited on a wall of the dielectric, utilizing atomic layer deposition (ALD). A programmable material is formed on the electrode and a conductor is formed to the programmable material. In an aspect, a barrier is conformally deposited utilizing ALD, between the electrode and the programmable material.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: July 19, 2005
    Assignee: Ovonyx, Inc
    Inventors: Tyler A. Lowrey, Charles H. Dennison
  • Patent number: 6917052
    Abstract: In an aspect, an apparatus is provided that sets and reprograms the state of programmable devices. In an aspect, a method is provided such that an opening is formed through a dielectric exposing a contact formed on a substrate. The resistivity of the contact is modified by at least one of implanting ions into the contact, depositing a material on the contact, and treating the contact with plasma. In an aspect, a spacer is formed within the opening and programmable material is formed within the opening and on the modified contact. A conductor is formed on the programmable material and the contact transmits to a signal line.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: July 12, 2005
    Assignee: Ovonyx, Inc.
    Inventors: Stephen J. Hudgens, Tyler A. Lowrey
  • Patent number: 6914310
    Abstract: A method for forming a floating gate semiconductor device such as an electrically erasable programmable read only memory is provided. The device includes a silicon substrate having an electrically isolated active area. A gate oxide, as well as other components of a FET (e.g., source, drain) are formed in the active area. A self aligned floating gate is formed by depositing a conductive layer (e.g., polysilicon) into the recess and over the gate oxide. The conductive layer is then chemically mechanically planarized to an endpoint of the isolation layer so that all of the conductive layer except material in the recess and on the gate oxide is removed. Following formation of the floating gate an insulating layer is formed on the floating gate and a control gate is formed on the insulating layer.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: July 5, 2005
    Assignee: Micron Technology, Inc.
    Inventors: Trung Tri Doan, Tyler A. Lowrey
  • Patent number: 6914801
    Abstract: A method of operating a electrically programmable phase-change memory element. The method includes the step of applying an electrical signal to memory element which is sufficient to return the memory element to its pre-drift resistance state.
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: July 5, 2005
    Assignee: Ovonyx, Inc.
    Inventors: Sergey A. Kostylev, Wolodymyr Czubatyj, Tyler Lowrey