Patents by Inventor Leonard Forbes

Leonard Forbes 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: 8283744
    Abstract: Methods of forming transparent conducting oxides and devices formed by these methods are shown. Monolayers that contain indium and monolayers that contain molybdenum are deposited onto a substrate and subsequently processed to form molybdenum-doped indium oxide. The resulting transparent conducing oxide includes properties such as an amorphous or nanocrystalline microstructure. Devices that include transparent conducing oxides formed with these methods have better step coverage over substrate topography and more robust film mechanical properties.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: October 9, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Kie Y. Ahn, Leonard Forbes
  • Patent number: 8278225
    Abstract: A dielectric layer containing a hafnium tantalum oxide film and a method of fabricating such a dielectric layer produce a dielectric layer for use in a variety of electronic devices. Embodiments include structures for capacitors, transistors, memory devices, and electronic systems with dielectric layers containing a hafnium tantalum oxide film structured as one or more monolayers.
    Type: Grant
    Filed: October 12, 2009
    Date of Patent: October 2, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Kie Y. Ahn, Leonard Forbes
  • Patent number: 8273177
    Abstract: An apparatus and methods of forming the apparatus include a film of transparent conductive titanium-doped indium oxide for use in a variety of configurations and systems. The film of transparent conductive titanium-doped indium oxide may be structured as one or more monolayers. The film of transparent conductive titanium-doped indium oxide may be formed using atomic layer deposition.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: September 25, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Kie Y. Ahn, Leonard Forbes
  • Publication number: 20120235295
    Abstract: A method for forming conductive contacts and interconnects in a semiconductor structure, and the resulting conductive components are provided. In particular, the method is used to fabricate single or dual damascene copper contacts and interconnects in integrated circuits such as memory devices and microprocessor.
    Type: Application
    Filed: May 31, 2012
    Publication date: September 20, 2012
    Applicant: MOSAID TECHNOLOGIES, INCORPORATED
    Inventors: Kie Y. AHN, Leonard Forbes
  • Patent number: 8269254
    Abstract: The use of atomic layer deposition (ALD) to form a semiconductor structure of a silicon film on a germanium substrate is disclosed. An example embodiment includes a tantalum nitride gate electrode on a hafnium dioxide gate dielectric on the silicon film (TaN/HfO2/Si/Ge), which produces a reliable high dielectric constant (high k) electronic structure having higher charge carrier mobility as compared to silicon substrates. This structure may be useful in high performance electronic devices. The structure can be formed by ALD deposition of a thin silicon layer on a germanium substrate surface, and then ALD forming a hafnium oxide gate dielectric layer, and a tantalum nitride gate electrode. Such a structure may be used as the gate of a MOSFET, or as a capacitor. The properties of the dielectric may be varied by replacing the hafnium oxide with another gate dielectric such as zirconium oxide (ZrO2), or titanium oxide (TiO2).
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: September 18, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Kie Y. Ahn, Leonard Forbes
  • Patent number: 8258518
    Abstract: A graded composition, high dielectric constant gate insulator is formed between a substrate and floating gate in a flash memory cell transistor. The gate insulator comprises amorphous germanium or a graded composition of germanium carbide and silicon carbide. If the composition of the gate insulator is closer to silicon carbide near the substrate, the electron barrier for hot electron injection will be lower. If the gate insulator is closer to the silicon carbide near the floating gate, the tunnel barrier can be lower at the floating gate.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: September 4, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Leonard Forbes, Kie Y. Ahn
  • Patent number: 8258816
    Abstract: An integrated circuit comparator comprises a differential amplifier, a source follower circuit coupled to a gate terminal of a first transistor in the differential amplifier, and an output circuit. One or more source follower circuits may be utilized in connection with the differential amplifier, and one or more source follower circuits may be utilized in connection with the output circuit.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: September 4, 2012
    Assignee: Micron Technology, Inc.
    Inventor: Leonard Forbes
  • Patent number: 8252697
    Abstract: Methods of forming transparent zinc-tin oxide structures are described. Devices that include transparent zinc-tin oxide structures as at least one of a channel layer in a transistor or a transparent film disposed over an electrical device that is at a substrate.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: August 28, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Kie Y. Ahn, Leonard Forbes
  • Publication number: 20120205720
    Abstract: Electronic apparatus and methods of forming the electronic apparatus include a tantalum silicon oxynitride film on a substrate for use in a variety of electronic systems. The tantalum silicon oxynitride film may be structured as one or more monolayers. The tantalum silicon oxynitride film may be formed using a monolayer or partial monolayer sequencing process. Metal electrodes may be disposed on a dielectric containing a tantalum silicon oxynitride film.
    Type: Application
    Filed: April 27, 2012
    Publication date: August 16, 2012
    Inventors: Leonard Forbes, Kie Y. Ahn, Arup Bhattacharyya
  • Patent number: 8237216
    Abstract: Lanthanum-metal oxide dielectrics and methods of fabricating such dielectrics provide an insulating layer in a variety of structures for use in a wide range of electronic devices and systems. In an embodiment, a lanthanum-metal oxide dielectric is formed using a trisethylcyclopentadionatolanthanum precursor and/or a trisdipyvaloylmethanatolanthanum precursor. Additional apparatus, systems, and methods are disclosed.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: August 7, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Kie Y. Ahn, Leonard Forbes
  • Publication number: 20120196448
    Abstract: A dielectric containing an insulating metal oxide film having multiple metal components and a method of fabricating such a dielectric produce a reliable dielectric for use in a variety of electronic devices. Embodiments include a titanium aluminum oxide film structured as one or more monolayers. Embodiments also include structures for capacitors, transistors, memory devices, and electronic systems with dielectrics containing a titanium aluminum oxide film.
    Type: Application
    Filed: April 9, 2012
    Publication date: August 2, 2012
    Inventors: Kie Y. Ahn, Leonard Forbes
  • Patent number: 8227309
    Abstract: One aspect of the present subject matter relates to a method for forming strained semiconductor film. According to an embodiment of the method, a crystalline semiconductor bridge is formed over a substrate. The bridge has a first portion bonded to the substrate, a second portion bonded to the substrate, and a middle portion between the first and second portions separated from the substrate. The middle portion of the bridge is bonded to the substrate to provide a compressed crystalline semiconductor layer on the substrate. Other aspects are provided herein.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: July 24, 2012
    Assignee: Micron Technology, Inc.
    Inventor: Leonard Forbes
  • Patent number: 8227305
    Abstract: A memory array with data/bit lines extending generally in a first direction formed in an upper surface of a substrate and access transistors extending generally upward and aligned generally atop a corresponding data/bit line. The access transistors have a pillar extending generally upward with a source region formed so as to be in electrical communication with the corresponding data/bit line and a drain region formed generally at an upper portion of the pillar and a surround gate structure substantially completely encompassing the pillar in lateral directions and extending substantially the entire vertical extent of the pillar and word lines extending generally in a second direction and in electrical contact with a corresponding surround gate structure at least a first surface thereof such that bias voltage applied to a given word line is communicated substantially uniformly in a laterally symmetric extent about the corresponding pillar via the surround gate structure.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: July 24, 2012
    Assignee: Micron Technology, Inc.
    Inventor: Leonard Forbes
  • Patent number: 8228725
    Abstract: Structures, systems and methods for transistors utilizing oxide nanolaminates are provided. One transistor embodiment includes a first source/drain region, a second source/drain region, and a channel region therebetween. A gate is separated from the channel region by a gate insulator. The gate insulator includes oxide insulator nanolaminate layers with charge trapping in potential wells formed by different electron affinities of the insulator nanolaminate layers.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: July 24, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Leonard Forbes, Kie Y. Ahn
  • Publication number: 20120168855
    Abstract: One aspect of the present subject matter relates to a method for forming a transistor. According to an embodiment of the method, a pillar of amorphous semiconductor material is formed on a crystalline substrate, and a solid phase epitaxy process is performed to crystallize the amorphous semiconductor material using the crystalline substrate to seed the crystalline growth. The pillar has a sublithographic thickness. A transistor body is formed in the crystallized semiconductor pillar between a first source/drain region and a second source/drain region. A surrounding gate insulator is formed around the semiconductor pillar, and a surrounding gate is formed around and separated from the semiconductor pillar by the surrounding gate insulator. Other aspects are provided herein.
    Type: Application
    Filed: March 12, 2012
    Publication date: July 5, 2012
    Inventor: Leonard Forbes
  • Patent number: 8211792
    Abstract: A method for forming conductive contacts and interconnects in a semiconductor structure, and the resulting conductive components are provided. In particular, the method is used to fabricate single or dual damascene copper contacts and interconnects in integrated circuits such as memory devices and microprocessor.
    Type: Grant
    Filed: January 12, 2011
    Date of Patent: July 3, 2012
    Assignee: Mosaid Technologies Incorporated
    Inventors: Kie Y. Ahn, Leonard Forbes
  • Patent number: 8212250
    Abstract: The absorption coefficient of silicon for infrared light is very low and most solar cells absorb very little of the infrared light energy in sunlight. Very thick cells of crystalline silicon can be used to increase the absorption of infrared light energy but the cost of thick crystalline cells is prohibitive. The present invention relates to the use of less expensive microcrystalline silicon solar cells and the use of backside texturing with diffusive scattering to give a very large increase in the absorption of infrared light. Backside texturing comprises a plurality of cusped features providing diffusive scattering. Constructing the solar cell with a smooth front surface results in multiple internal reflections, light trapping, and a large enhancement of the absorption of infrared solar energy.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: July 3, 2012
    Inventor: Leonard Forbes
  • Publication number: 20120146132
    Abstract: A memory array with staggered local data/bit lines extending generally in a first direction formed in an upper surface of a substrate and memory cell access transistors extending generally upward and aligned generally atop a corresponding local data/bit line. Selected columns of the memory cell access transistors are sacrificed to define local data/bit access transistors which are interconnected with overlying low resistance global data/bit lines. The global data/bit lines provide selectable low resistance paths between memory cells and sense amplifiers. The sacrificed memory cell access transistors and staggered local data/bit lines provide increased footprints for sense amplifiers to facilitate increased circuit integration.
    Type: Application
    Filed: January 18, 2012
    Publication date: June 14, 2012
    Applicant: MICRON TECHNOLOGY, INC.
    Inventor: Leonard Forbes
  • Publication number: 20120133428
    Abstract: Electronic apparatus and methods of forming the electronic apparatus may include one or more insulator layers having a refractory metal and a non-refractory metal for use in a variety of electronic systems and devices. Embodiments can include electronic apparatus and methods of forming the electronic apparatus having a tantalum aluminum oxynitride film. The tantalum aluminum oxynitride film may be structured as one or more monolayers. The tantalum aluminum oxynitride film may be formed using atomic layer deposition. Metal electrodes may be disposed on a dielectric containing a tantalum aluminum oxynitride film.
    Type: Application
    Filed: February 7, 2012
    Publication date: May 31, 2012
    Inventors: Leonard Forbes, Kie Y. Ahn, Arup Bhattacharyya
  • Patent number: 8188533
    Abstract: Structures and methods for write once read only memory employing charge trapping in insulators are provided. The write once read only memory cell includes a metal oxide semiconductor field effect transistor having a first source/drain region, a second source/drain region, a channel region between the first and the second source/drain regions, and a gate separated from the channel region by a gate insulator. A plug couples the first source/drain region to an array plate. A bitline is coupled to the second source/drain region. The MOSFET can be programmed by operation in a reverse direction trapping charge in the gate insulator adjacent to the first source/drain region such that the programmed MOSFET operates at reduced drain source current when read in a forward direction.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: May 29, 2012
    Assignee: Micron Technology, Inc.
    Inventor: Leonard Forbes