Patents by Inventor James Cleeves

James Cleeves 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).

  • Publication number: 20080044964
    Abstract: A method for making an electronic device, such as a MOS transistor, including the steps of forming a plurality of semiconductor islands on an electrically functional substrate, printing a first dielectric layer on or over a first subset of the semiconductor islands and optionally a second dielectric layer on or over a second subset of the semiconductor islands, and annealing. The first dielectric layer contains a first dopant, and the (optional) second dielectric layer contains a second dopant different from the first dopant. The dielectric layer(s), semiconductor islands and substrate are annealed sufficiently to diffuse the first dopant into the first subset of semiconductor islands and, when present, the second dopant into the second subset of semiconductor islands.
    Type: Application
    Filed: August 3, 2007
    Publication date: February 21, 2008
    Inventors: Arvind Kamath, James Cleeves, Joerg Rockenberger, Patrick Smith, Fabio Zurcher
  • Publication number: 20080029901
    Abstract: A method to form a vertical interconnect advantageous for high-density semiconductor devices. A conductive etch stop layer, preferably of cobalt silicide, is formed. The etch stop layer may be in the form of patterned lines or wires. A layer of contact material is formed on and in contact with the etch stop layer. The layer of contact material is patterned to form posts. Dielectric is deposited over and between the posts, then the dielectric planarized to expose the tops of the posts. The posts can serve as vertical interconnects which electrically connect a next conductive layer formed on and in contact with the vertical interconnects with the underlying etch stop layer. The patterned dimension of vertical interconnects formed according to the present disclosure can be substantially the same as the minimum feature size, even at very small minimum feature size.
    Type: Application
    Filed: August 31, 2007
    Publication date: February 7, 2008
    Inventor: James Cleeves
  • Publication number: 20080022897
    Abstract: Methods for forming doped silane and/or semiconductor thin films, doped liquid phase silane compositions useful in such methods, and doped semiconductor thin films and structures. The composition is generally liquid at ambient temperatures and includes a Group IVA atom source and a dopant source. By irradiating a doped liquid silane during at least part of its deposition, a thin, substantially uniform doped oligomerized/polymerized silane film may be formed on a substrate. Such irradiation is believed to convert the doped silane film into a relatively high-molecular weight species with relatively high viscosity and relatively low volatility, typically by cross-linking, isomerization, oligomerization and/or polymerization. A film formed by the irradiation of doped liquid silanes can later be converted (generally by heating and annealing/recrystallization) into a doped, hydrogenated, amorphous silicon film or a doped, at least partially polycrystalline silicon film suitable for electronic devices.
    Type: Application
    Filed: October 8, 2007
    Publication date: January 31, 2008
    Inventors: Fabio Zurcher, Wenzhuo Guo, Joerg Rockenberger, Vladimir Dioumaev, Brent Ridley, Klaus Kunze, James Cleeves
  • Publication number: 20070287237
    Abstract: A self-aligned top-gate thin film transistor (TFT) and a method of forming such a thin film transistor, by forming a semiconductor thin film layer; printing a doped glass pattern thereon, a gap in the doped glass pattern defining a channel region of the TFT; forming a gate electrode on or over the channel region, the gate electrode comprising a gate dielectric film and a gate conductor thereon; and diffusing a dopant from the doped glass pattern into the semiconductor thin film layer.
    Type: Application
    Filed: June 12, 2007
    Publication date: December 13, 2007
    Inventors: Joerg Rockenberger, James Cleeves, Arvind Kamath
  • Publication number: 20070105352
    Abstract: A method to create a polysilicon layer with large grains and uniform grain density is described. A first amorphous silicon layer is formed. A crystallizing agent is selectively introduced in a substantially symmetric pattern, preferably symmetric in two dimensions, across an area of the first amorphous layer. The crystallizing agent may be, for example, silicon nuclei, germanium, or laser energy. A mask layer is formed on the amorphous silicon layer, and holes etched in the mask layer in a symmetric pattern to expose the amorphous layer to, for example, silicon nuclei or germanium) only in the holes. The mask layer is removed and a second amorphous layer formed on the first. If laser energy is used, no mask layer or second amorphous layer is generally used. The wafer is annealed to form a polysilicon layer with substantially no amorphous silicon remaining between the grains.
    Type: Application
    Filed: December 22, 2006
    Publication date: May 10, 2007
    Inventors: Shuo Gu, James Cleeves
  • Publication number: 20070007342
    Abstract: Radio frequency identification (RFID) tags and processes for manufacturing the same. The RFID device generally includes (1) a metal antenna and/or inductor; (2) a dielectric layer thereon, to support and insulate integrated circuitry from the metal antenna and/or inductor; (3) a plurality of diodes and a plurality of transistors on the dielectric layer, the diodes having at least one layer in common with the transistors; and (4) a plurality of capacitors in electrical communication with the metal antenna and/or inductor and at least some of the diodes, the plurality of capacitors having at least one layer in common with the plurality of diodes and/or with contacts to the diodes and transistors. The method preferably integrates liquid silicon-containing ink deposition into a cost effective, integrated manufacturing process for the manufacture of RFID circuits. Furthermore, the present RFID tags generally provide higher performance (e.g.
    Type: Application
    Filed: June 12, 2006
    Publication date: January 11, 2007
    Inventors: James Cleeves, J. MacKenzie, Arvind Kamath
  • Publication number: 20070002603
    Abstract: An integrated circuit and associated method of programming are provided. Such integrated circuit includes a memory cell with a diode and an antifuse in communication with the diode. The antifuse is constructed to include a high-K dielectric material with a K greater than 3.9. Further, the memory cell is programmed utilizing a programming pulse that reverse biases the diode thereof.
    Type: Application
    Filed: July 1, 2005
    Publication date: January 4, 2007
    Inventor: James Cleeves
  • Publication number: 20060232276
    Abstract: A spark plug is disclosed having at least one main electrode and at least one secondary electrode. The gaps associated with the secondary electrodes are between one third and two thirds the optimum gap distance. Resistors associated with the secondary electrodes control the current flow and therefore the voltage on the electrodes.
    Type: Application
    Filed: May 31, 2006
    Publication date: October 19, 2006
    Inventor: James Cleeves
  • Publication number: 20060141679
    Abstract: A very high density field programmable memory is disclosed. An array is formed vertically above a substrate using several layers, each layer of which includes vertically fabricated memory cells. The cell in an N level array may be formed with N+1 masking steps plus masking steps needed for contacts. Maximum use of self alignment techniques minimizes photolithographic limitations. In one embodiment the peripheral circuits are formed in a silicon substrate and an N level array is fabricated above the substrate.
    Type: Application
    Filed: February 14, 2006
    Publication date: June 29, 2006
    Inventors: Vivek Subramanian, James Cleeves
  • Publication number: 20060134837
    Abstract: A very high density field programmable memory is disclosed. An array is formed vertically above a substrate using several layers, each layer of which includes vertically fabricated memory cells. The cell in an N level array may be formed with N+1 masking steps plus masking steps needed for contacts. Maximum use of self alignment techniques minimizes photolithographic limitations. In one embodiment the peripheral circuits are formed in a silicon substrate and an N level array is fabricated above the substrate.
    Type: Application
    Filed: February 14, 2006
    Publication date: June 22, 2006
    Inventors: Vivek Subramanian, James Cleeves
  • Publication number: 20060114188
    Abstract: A field emission display (FED) having a correction system with a correction coefficient derived from emission current is presented. Within one embodiment in accordance with the present invention, a field emission display has an anode at the faceplate and a focus structure. The anode potential is held at ground while the focus structure potential is held between, but is not limited to, 40 and 50 volts. The current flowing to the focus structure is measured and used as the basis for the correction coefficient for the field emission display.
    Type: Application
    Filed: April 22, 2005
    Publication date: June 1, 2006
    Inventors: Ronald Hansen, James Dunphy, Christopher Spindt, James Cleeves, Jerome Truppa, Gregory Fink, Yukinobu Iguchi
  • Publication number: 20050128807
    Abstract: An exemplary NAND string memory array provides for capacitive boosting of a half-selected memory cell channel to reduce program disturb effects of the half selected cell. To reduce the effect of leakage current degradation of the boosted level, multiple programming pulses of a shorter duration are employed to limit the time period during which such leakage currents may degrade the voltage within the unselected NAND strings. In addition, multiple series select devices at one or both ends of each NAND string further ensure reduced leakage through such select devices, for both unselected and selected NAND strings. In certain exemplary embodiments, a memory array includes series-connected NAND strings of memory cell transistors having a charge storage dielectric, and includes more than one plane of memory cells formed above a substrate.
    Type: Application
    Filed: December 5, 2003
    Publication date: June 16, 2005
    Inventors: En-Hsing Chen, Andrew Walker, Roy Scheuerlein, Sucheta Nallamothu, Alper Ilkbahar, Luca Fasoli, James Cleeves
  • Publication number: 20050121790
    Abstract: A die is formed with different and optimized critical dimensions in different device levels and areas of those device levels using photolithography and etch techniques. One aspect of the invention provides for a memory array formed above a substrate, with driver circuitry formed in the substrate. A level of the memory array consists of, for example, parallel rails and a fan-out region. It is desirable to maximize density of the rails and minimize cost of lithography for the entire memory array. This can be achieved by forming the rails at a tighter pitch than the CMOS circuitry beneath it, allowing cheaper lithography tools to be used when forming the CMOS, and similarly by optimizing lithography and etch techniques for a device level to produce a tight pitch in the rails, and a more relaxed pitch in the less-critical fan-out region.
    Type: Application
    Filed: December 5, 2003
    Publication date: June 9, 2005
    Applicant: Matrix Semiconductor, Inc.
    Inventors: James Cleeves, Roy Scheuerlein
  • Publication number: 20050105371
    Abstract: A very high density field programmable memory is disclosed. An array is formed vertically above a substrate using several layers, each layer of which includes vertically fabricated memory cells. The cell in an N level array may be formed with N+1 masking steps plus masking steps needed for contacts. Maximum use of self alignment techniques minimizes photolithographic limitations. In one embodiment the peripheral circuits are formed in a silicon substrate and an N level array is fabricated above the substrate.
    Type: Application
    Filed: February 9, 2004
    Publication date: May 19, 2005
    Inventors: Mark Johnson, Thomas Lee, James Cleeves
  • Publication number: 20050099856
    Abstract: A 3D semiconductor memory is described having rail-stacks which define conductive lines and cells. The memory levels are organized in pairs with each pair showing common lines in adjacent levels.
    Type: Application
    Filed: September 18, 2003
    Publication date: May 12, 2005
    Inventor: James Cleeves
  • Publication number: 20050072976
    Abstract: A method to create a polysilicon layer with large grains and uniform grain density is described. A first amorphous silicon layer is formed. A crystallizing agent is selectively introduced in a substantially symmetric pattern, preferably symmetric in two dimensions, across an area of the first amorphous layer. The crystallizing agent may be, for example, silicon nuclei, germanium, or laser energy. A mask layer is formed on the amorphous silicon layer, and holes etched in the mask layer in a symmetric pattern to expose the amorphous layer to, for example, silicon nuclei or germanium) only in the holes. The mask layer is removed and a second amorphous layer formed on the first. If laser energy is used, no mask layer or second amorphous layer is generally used. The wafer is annealed to form a polysilicon layer with substantially no amorphous silicon remaining between the grains.
    Type: Application
    Filed: October 7, 2003
    Publication date: April 7, 2005
    Inventors: James Cleeves, Shuo Gu
  • Publication number: 20050057132
    Abstract: A spark plug is disclosed having at least one main electrode and at least one secondary electrode. The gaps associated with the secondary electrodes are between one third and two thirds the optimum gap distance. Resistors associated with the secondary electrodes control the current flow and therefore the voltage on the electrodes.
    Type: Application
    Filed: September 15, 2003
    Publication date: March 17, 2005
    Inventor: James Cleeves
  • Publication number: 20030026157
    Abstract: A memory cell for a two- or a three-dimensional memory array includes first and second conductors and set of layers situated between the conductors. This set of layers includes a dielectric rupture anti-fuse layer having a thickness less than 35 Å and a leakage current density (in the unruptured state) greater than 1 mA/cm2 at 2 V. This low thickness and high current leakage density provide a memory cell with an asymmetric dielectric layer breakdown voltage characteristic.
    Type: Application
    Filed: July 30, 2001
    Publication date: February 6, 2003
    Inventors: N. Johan Knall, Igor Kouznetsov, Michael A. Vyvoda, James Cleeves