Patents by Inventor Paul Farrar

Paul Farrar 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: 7485544
    Abstract: In various method embodiments, a device region is defined in a semiconductor substrate and isolation regions are defined adjacent to the device region. The device region has a channel region, and the isolation regions have volumes. The volumes of the isolation regions are adjusted to provide the channel region with a desired strain. In various embodiments, adjusting the volumes of the isolation regions includes transforming the isolation regions from a crystalline region to an amorphous region to expand the volumes of the isolation regions and provide the channel region with a desired compressive strain. In various embodiments, adjusting the volumes of the isolation regions includes transforming the isolation regions from an amorphous region to a crystalline region to contract the volumes of the isolation regions to provide the channel region with a desired tensile strain. Other aspects and embodiments are provided herein.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: February 3, 2009
    Assignee: Micron Technology, Inc.
    Inventors: Leonard Forbes, Paul A. Farrar
  • Patent number: 7482687
    Abstract: An interconnect structure with a plurality of low dielectric constant insulating layers acting as etch stops is disclosed. The low dielectric constant materials act as insulating layers through which trenches and vias are subsequently formed by employing a timed etching. Since the low dielectric constant materials are selected so that the etchant available for each one has only a small etch rate relative to the other low dielectric constant materials, the plurality of low dielectric constant materials act as etch stops during the fabrication of interconnect structures. This way, the etch stop layers employed in the prior art are eliminated and the number of fabrication steps is reduced.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: January 27, 2009
    Assignee: Micron Technology, Inc.
    Inventor: Paul A. Farrar
  • Publication number: 20090001586
    Abstract: Structures are provided that include a conducting layer disposed on a layered arrangement of a diffusion barrier layer and a seed layer in an integrated circuit. Apparatus and systems having such structures and methods of forming these structures for apparatus and systems are disclosed.
    Type: Application
    Filed: June 24, 2008
    Publication date: January 1, 2009
    Inventor: Paul A. Farrar
  • Patent number: 7465608
    Abstract: A three-dimensional multichip module having a base structure formed by a plurality of chips secured together in a stack and a plurality of exterior chips mounted to the exterior faces of the base structure. The multichip module may incorporate memory chips, processor chips, logic chips, A to D converter chips, and other chips in a compact package. The module permits chips that require extensive cooling to be positioned within the structure in a manner such that a large surface area of the chip is not in contact with other chips. The module also permits extensive interconnection between chips within the module.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: December 16, 2008
    Assignee: Micron Technology, Inc.
    Inventor: Paul A. Farrar
  • Patent number: 7453718
    Abstract: Digital data apparatuses and digital data operational methods are described.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: November 18, 2008
    Assignee: Micron Technology, Inc.
    Inventor: Paul A. Farrar
  • Publication number: 20080277734
    Abstract: The present invention includes methods for stressing transistor channels of semiconductor device structures. Such methods include the formation of so-called near-surface “nanocavities” adjacent to the source/drain regions, forming extensions of the source/drain regions adjacent to and including the nanocavities, and implanting matter of a type that will expand or contract the volume of the nanocavties, depending respectively upon whether compressive strain is desirable in transistor channels between the nanocavities, as in PMOS field effect transistors, or tensile strain is wanted in transistor channels, as in NMOS field effect transistors, to enhance carrier mobility and transistor speed. Semiconductor device structures and semiconductor devices including these features are also disclosed.
    Type: Application
    Filed: May 8, 2007
    Publication date: November 13, 2008
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Arup Bhattacharyya, Leonard Forbes, Paul A. Farrar
  • Patent number: 7416958
    Abstract: A method for epitaxially forming a first semiconductor structure attached to a second semiconductor structure is provided. Devices and methods described include advantages such as reduced lattice mismatch at an epitaxial interface between two different semiconductor materials. One advantageous application of such an interface includes an electrical-optical communication structure. Methods such as deposition of layers at an elevated temperature provide easy formation of semiconductor structures with a modified lattice constant that permits an improved epitaxial interface.
    Type: Grant
    Filed: January 9, 2007
    Date of Patent: August 26, 2008
    Assignee: Micron Technology, Inc.
    Inventor: Paul A. Farrar
  • Patent number: 7411823
    Abstract: A memory cell that has both a DRAM cell and a non-volatile memory cell. The non-volatile memory cell might include a flash memory or an NROM cell. The memory cell is comprised of a vertical floating body transistor with dual gates, one on either side of a vertical pillar of a substrate. One gate is a polysilicon gate and gate insulator that is adjacent to the floating body of the transistor and acts as a DRAM cell. The non-volatile memory cell is constructed on the other side of the pillar with a floating gate or NROM structure. The DRAM and non-volatile cells are linked by a drain region coupling the two cells to a memory array bitline. The bottom of trenches on either side of the pillar have source regions that are linked to respective source lines of the memory array.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: August 12, 2008
    Assignee: Micron Technology, Inc.
    Inventors: Leonard Forbes, Paul A. Farrar
  • Patent number: 7394157
    Abstract: Structures are provided which improve performance in integrated circuits. The structures include a diffusion barrier and a seed layer in an integrated circuit both formed using a low energy ion implantation followed by a selective deposition of metal lines for the integrated circuit. The low energy ion implantation allows for the distinct placement of both the diffusion barrier and the seed layer. Structures are formed with a barrier/adhesion layer deposited in the number of trenches using a low energy ion implantation, e.g. a 100 to 800 electron volt (eV) ion implantation. A seed layer is deposited on the barrier/adhesion layer in the number of trenches also using the low energy ion implantation. Such structures include aluminum, copper, gold, and silver metal interconnects.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: July 1, 2008
    Assignee: Micron Technology, Inc.
    Inventor: Paul A. Farrar
  • Patent number: 7387912
    Abstract: A circuit assembly for fabricating an air bridge structure and a method of fabricating an integrated circuit package capable of supporting a circuit assembly including an air bridge structure. A circuit assembly comprises an electronic chip and a conductive structure embedded in a plurality of materials having a plurality of vaporization temperatures. The plurality of materials is formed on the electronic chip and the conductive structure is coupled to the electronic chip. To fabricate the circuit assembly, a support structure, including interstices, is formed on an electronic chip. The interstices of the support structure are filled with a material having a vaporization temperature that is less than the vaporization temperature of the support structure. Conductive structures are embedded in the support structure and the material, and a connective structure is mounted on the support structure. Finally, the material is removed from the interstices by heating the circuit assembly.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: June 17, 2008
    Assignee: Micron Technology, Inc.
    Inventor: Paul A. Farrar
  • Patent number: 7378737
    Abstract: Disclosed structures and methods inhibit atomic migration and related capacitive-resistive effects between a metallization layer and an insulator layer in a semiconductor structure. One exemplary structure includes an inhibiting layer between an insulator and a metallization layer. The insulator includes a polymer or an insulating oxide compound. And, the inhibiting layer has a compound formed from a reaction between the polymer or insulating oxide compound and a transition metal, a representative metal, or a metalloid.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: May 27, 2008
    Assignee: Micron Technology, Inc.
    Inventor: Paul A. Farrar
  • Publication number: 20080096320
    Abstract: Methods and devices for multi-chip stacks are shown. A method is shown that assembles multiple chips into stacks by stacking wafers prior to dicing into individual chips. Methods shown provide removal of defective chips and their replacement during the assembly process to improve manufacturing yield.
    Type: Application
    Filed: October 19, 2006
    Publication date: April 24, 2008
    Inventor: Paul A. Farrar
  • Patent number: 7359241
    Abstract: A memory cell that has both a DRAM cell and a non-volatile memory cell. The non-volatile memory cell might include a flash memory or an NROM cell. The memory cell is comprised of a vertical floating body transistor with dual gates, one on either side of a vertical pillar of a substrate. One gate is a polysilicon gate and gate insulator that is adjacent to the floating body of the transistor and acts as a DRAM cell. The non-volatile memory cell is constructed on the other side of the pillar with a floating gate or NROM structure. The DRAM and non-volatile cells are linked by a drain region coupling the two cells to a memory array bitline. The bottom of trenches on either side of the pillar have source regions that are linked to respective source lines of the memory array.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: April 15, 2008
    Assignee: Micron Technology, Inc.
    Inventors: Leonard Forbes, Paul A. Farrar
  • Patent number: 7348674
    Abstract: Integrated circuits having multi-level wiring layouts designed to inhibit the capacitive-resistance effect, and a method for fabricating such integrated circuits, is described. The integrated circuits have at least two planes of wiring adjacent to each other and extending in the same direction. One embodiment may further include a larger than normal insulator material between planes of wiring extending in one direction and at least one plane of wiring extending in a second direction transverse to the first direction. Each of the wiring channels in a wiring plane may be offset relative to a respective wiring channel in the next adjacent wiring plane which extends in the same direction.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: March 25, 2008
    Assignee: Micron Technology, Inc.
    Inventor: Paul A. Farrar
  • Patent number: 7347349
    Abstract: A method and device for printing liquid material such as liquid solder is provided. C4 structures as small as 10 microns in diameter can be produced using devices and methods described above. Further, devices and methods provided are able to operate at temperatures much higher than other print head designs such as piezoelectric actuated print heads. Additionally, due to the use of a gas flow restricting device and a recharging gas supply, ejection devices as described above can be used for a substantially extended lifetime, thus making devices and methods described above more economically desirable.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: March 25, 2008
    Assignee: Micron Technology, Inc.
    Inventors: Paul A. Farrar, Jerome M. Eldridge
  • Publication number: 20080070392
    Abstract: A method and device for reducing a dopant diffusion rate in a doped semiconductor region is provided. The methods and devices include selecting a plurality of impurity elements, including at least one dopant element. Selection of a plurality of impurity elements includes selecting a first impurity element with a first atomic radius larger than an average host matrix atomic radius and selecting a second impurity element with a second atomic radius smaller than an average host matrix atomic radius. The methods and devices further include selecting amounts of each impurity element of the plurality of impurity elements wherein amounts and atomic radii of each of the plurality of impurity elements complement each other to reduce a host matrix lattice strain.
    Type: Application
    Filed: November 1, 2007
    Publication date: March 20, 2008
    Inventors: Paul Farrar, Jerome Eldridge
  • Publication number: 20080057629
    Abstract: A method and device for cooling an integrated circuit is provided. A method and device using a gas to cool circuit structures such as a number of air bridge structures is provided. A method and device using a boiling liquid to cool circuit structures is provided. Further provided is a method of controlling chip temperature. This allows circuit and device designers an opportunity to design more efficient structures. Some properties that exhibit less variation when temperature ranges are controlled include electromigration, conductivity, operating speed, and reliability.
    Type: Application
    Filed: October 25, 2007
    Publication date: March 6, 2008
    Inventors: Paul Farrar, Leonard Forbes, Kie Ahn, Joseph Geusic, Arup Bhattacharyya, Alan Reinberg
  • Publication number: 20080054489
    Abstract: Some embodiments include a device having a number of memory cells and associated circuitry for accessing the memory cells. The memory cells of the device may be formed in one or more memory cell dice. The associated circuitry of the device may also be formed in one or more dice, optionally separated from the memory cell dice.
    Type: Application
    Filed: August 31, 2006
    Publication date: March 6, 2008
    Inventors: Paul A. Farrar, Hussein I Hanafi
  • Publication number: 20080048314
    Abstract: A method and device for cooling an integrated circuit is provided. A method and device using a gas to cool circuit structures such as a number of air bridge structures is provided. A method and device using a boiling liquid to cool circuit structures is provided. Further provided is a method of controlling chip temperature. This allows circuit and device designers an opportunity to design more efficient structures. Some properties that exhibit less variation when temperature ranges are controlled include electromigration, conductivity, operating speed, and reliability.
    Type: Application
    Filed: October 25, 2007
    Publication date: February 28, 2008
    Inventors: Paul Farrar, Leonard Forbes, Kie Ahn, Joseph Geusic, Arup Bhattacharyya, Alan Reinberg
  • Patent number: 7335965
    Abstract: A circuit assembly for fabricating an air bridge structure and a method of fabricating an integrated circuit package capable of supporting a circuit assembly including an air bridge structure. A circuit assembly comprises an electronic chip and a conductive structure embedded in a plurality of materials having a plurality of vaporization temperatures. The plurality of materials is formed on the electronic chip and the conductive structure is coupled to the electronic chip. To fabricate the circuit assembly, a support structure, including interstices, is formed on an electronic chip. The interstices of the support structure are filled with a material having a vaporization temperature that is less than the vaporization temperature of the support structure. Conductive structures are embedded in the support structure and the material, and a connective structure is mounted on the support structure. Finally, the material is removed from the interstices by heating the circuit assembly.
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: February 26, 2008
    Assignee: Micron Technology, Inc.
    Inventor: Paul A. Farrar