Patents by Inventor Ceredig Roberts

Ceredig Roberts 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: 20140231894
    Abstract: A method is disclosed for forming a memory device having buried access lines (e.g., wordlines) and buried data/sense lines (e.g., digitlines) disposed below vertical cell contacts. The buried wordlines may be formed trenches in a substrate extending in a first direction, and the buried digitlines may be formed from trenches in a substrate extending in a second direction perpendicular to the first direction. The buried digitlines may be coupled to a silicon sidewall by a digitline contact disposed between the digitlines and the silicon substrate.
    Type: Application
    Filed: April 30, 2014
    Publication date: August 21, 2014
    Applicant: Micron Technology, Inc.
    Inventors: Kunal Parekh, Ceredig Roberts, Thy Tran, Jim Jozwiak, David Hwang
  • Patent number: 8716116
    Abstract: A method is disclosed for forming a memory device having buried access lines (e.g., wordlines) and buried data/sense lines (e.g., digitlines) disposed below vertical cell contacts. The buried wordlines may be formed trenches in a substrate extending in a first direction, and the buried digitlines may be formed from trenches in a substrate extending in a second direction perpendicular to the first direction. The buried digitlines may be coupled to a silicon sidewall by a digitline contact disposed between the digitlines and the silicon substrate.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: May 6, 2014
    Assignee: Micron Technology, Inc.
    Inventors: Kunal Parekh, Ceredig Roberts, Thy Tran, Jim Jozwiak, David Hwang
  • Publication number: 20110220994
    Abstract: A method is disclosed for forming a memory device having buried access lines (e.g., wordlines) and buried data/sense lines (e.g., digitlines) disposed below vertical cell contacts. The buried wordlines may be formed trenches in a substrate extending in a first direction, and the buried digitlines may be formed from trenches in a substrate extending in a second direction perpendicular to the first direction. The buried digitlines may be coupled to a silicon sidewall by a digitline contact disposed between the digitlines and the silicon substrate.
    Type: Application
    Filed: March 10, 2010
    Publication date: September 15, 2011
    Applicant: Micron Technology, Inc.
    Inventors: Kunal Parekh, Ceredig Roberts, Thy Tran, Jim Jozwiak, David Hwang
  • Patent number: 7935999
    Abstract: A memory device comprises an active area comprising a source and at least two drains defining a first axis. At least two substantially parallel word lines are defined by a first pitch, with one word line located between each drain and the source. Digit lines are defined by a second pitch, one of the digit lines being coupled to the source and forming a second axis. The active areas of the memory array are tilted at 45° to the grid defined by the word lines and digit lines. The word line pitch is about 1.5F, while the digit line pitch is about 3F.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: May 3, 2011
    Assignee: Micron Technology, Inc.
    Inventors: Gordon A. Haller, David K. Hwang, Sanh Dang Tang, Ceredig Roberts
  • Publication number: 20100148249
    Abstract: A memory device comprises an active area comprising a source and at least two drains defining a first axis. At least two substantially parallel word lines are defined by a first pitch, with one word line located between each drain and the source. Digit lines are defined by a second pitch, one of the digit lines being coupled to the source and forming a second axis. The active areas of the memory array are tilted at 45° to the grid defined by the word lines and digit lines. The word line pitch is about 1.5F, while the digit line pitch is about 3F.
    Type: Application
    Filed: February 22, 2010
    Publication date: June 17, 2010
    Applicant: Micron Technology, Inc.
    Inventors: Gordon A. Haller, David K. Hwang, Sanh Dang Tang, Ceredig Roberts
  • Patent number: 7687342
    Abstract: A memory device comprises an active area comprising a source and at least two drains defining a first axis. At least two substantially parallel word lines are defined by a first pitch, with one word line located between each drain and the source. Digit lines are defined by a second pitch, one of the digit lines being coupled to the source and forming a second axis. The active areas of the memory array are tilted at 45° to the grid defined by the word lines and digit lines. The word line pitch is about 1.5F, while the digit line pitch is about 3F.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: March 30, 2010
    Assignee: Micron Technology, Inc.
    Inventors: Gordon A. Haller, David K. Hwang, Sanh Dang Tang, Ceredig Roberts
  • Patent number: 7488664
    Abstract: A capacitor structure for a semiconductor assembly and a method for forming same are described. The capacitor structure comprises a pair of electrically separated capacitor electrodes and a capacitor electrode being common to only the pair of electrically separated capacitor electrodes.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: February 10, 2009
    Assignee: Micron Technology, Inc.
    Inventors: Keith Cook, Ceredig Roberts
  • Patent number: 7247919
    Abstract: An integrated circuit which provides a FET device having reduced GIDL current is described. A semiconductor substrate is provided wherein active regions are separated by an isolation region and a gate oxide layer is provided on the active regions. A gate electrode is provided upon the gate oxide layer wherein beneath an edge of the gate electrode, a gate-drain overlap region having a high dose ion implant is provided.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: July 24, 2007
    Assignee: Micron Technology, Inc.
    Inventors: Chandra V. Mouli, Ceredig Roberts
  • Publication number: 20070045712
    Abstract: A memory device comprises an active area comprising a source and at least two drains defining a first axis. At least two substantially parallel word lines are defined by a first pitch, with one word line located between each drain and the source. Digit lines are defined by a second pitch, one of the digit lines being coupled to the source and forming a second axis. The active areas of the memory array are tilted at 45° to the grid defined by the word lines and digit lines. The word line pitch is about 1.5 F, while the digit line pitch is about 3 F.
    Type: Application
    Filed: September 1, 2005
    Publication date: March 1, 2007
    Inventors: Gordon Haller, David Hwang, Sanh Tang, Ceredig Roberts
  • Publication number: 20070034928
    Abstract: A capacitor structure for a semiconductor assembly and a method for forming same are described. The capacitor structure comprises a pair of electrically separated capacitor electrodes and a capacitor electrode being common to only the pair of electrically separated capacitor electrodes.
    Type: Application
    Filed: August 10, 2005
    Publication date: February 15, 2007
    Inventors: Keith Cook, Ceredig Roberts
  • Publication number: 20060263964
    Abstract: A process for the fabrication of an integrated circuit which provides a FET device having reduced GIDL current is described. A semiconductor substrate is provided wherein active regions are separated by an isolation region, and a gate oxide layer is form on the active regions. Gate electrodes are formed upon the gate oxide layer in the active regions. An angled, high dose, ion implant is performed to selectively dope the gate oxide layer beneath an edge of each gate electrode in a gate-drain overlap region, and the fabrication of the integrated circuit is completed.
    Type: Application
    Filed: July 31, 2006
    Publication date: November 23, 2006
    Inventors: Chandra Mouli, Ceredig Roberts
  • Publication number: 20060017074
    Abstract: The present invention includes a residue-free overlay target, as well as a method of forming a residue-free overlay target. The residue-free overlay target of the present invention is defined by trenches or pads including a series of raised lines. The raised lines included in the overlay target of the present invention substantially eliminate any surface topography, such as depressions, at the top surface of overlying material layers and, thereby, prevent accumulation of process residue which may obscure the overlay target and inhibit further processing. The method of the present invention may be accomplished and modified using process technology known in the semiconductor fabrication art and includes providing a semiconductor substrate, depositing a resist layer, patterning the resist, and executing a wet or dry etch to create at least one overlay target according to the present invention.
    Type: Application
    Filed: September 1, 2005
    Publication date: January 26, 2006
    Inventors: Pary Baluswamy, Scott DeBoer, Ceredig Roberts, Tim Bossart
  • Patent number: 6914017
    Abstract: The present invention includes a residue-free overlay target, as well as a method of forming a residue-residue free overlay target. The residue-free overlay target of the present invention is defined by trenches or pads including a series of raised lines. The raised lines included in the overlay target of the present invention substantially eliminate any surface topography, such as depressions, at the top surface of overlying material layers, and, thereby, prevent accumulation of process residue which may obscure the overlay target and inhibit further processing. The method of the present invention may be accomplished and modified using process technology known in the semiconductor fabrication art and includes providing a semiconductor substrate, depositing a resist layer, patterning the resist, and executing a wet or dry etch to create at least one overlay target according to the present invention.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: July 5, 2005
    Assignee: Micron Technology, Inc.
    Inventors: Pary Baluswamy, Scott J. DeBoer, Ceredig Roberts, Tim H. Bossart
  • Publication number: 20050070069
    Abstract: The present invention includes a residue-free overlay target, as well as a method of forming a residue-free overlay target. The residue-free overlay target of the present invention is defined by trenches or pads including a series of raised lines. The raised lines included in the overlay target of the present invention substantially eliminate any surface topography, such as depressions, at the top surface of overlying material layers and, thereby, prevent accumulation of process residue which may obscure the overlay target and inhibit further processing. The method of the present invention may be accomplished and modified using process technology known in the semiconductor fabrication art and includes providing a semiconductor substrate, depositing a resist layer, patterning the resist, and executing a wet or dry etch to create at least one overlay target according to the present invention.
    Type: Application
    Filed: November 18, 2004
    Publication date: March 31, 2005
    Inventors: Pary Baluswamy, Scott DeBoer, Ceredig Roberts, Tim Bossart
  • Patent number: 6822342
    Abstract: The present invention includes a residue-free overlay target, as well as a method of forming a residue-free overlay target. The residue-free overlay target of the present invention is defined by trenches or pads including a series of raised lines. The raised lines included in the overlay target of the present invention substantially eliminate any surface topography, such as depressions, at the top surface of overlying material layers and, thereby, prevent accumulation of process residue which may obscure the overlay target and inhibit further processing. The method of the present invention may be accomplished and modified using process technology known in the semiconductor fabrication art and includes providing a semiconductor substrate, depositing a resist layer, patterning the resist, and executing a wet or dry etch to create at least one overlay target according to the present invention.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: November 23, 2004
    Assignee: Micron Technology, Inc.
    Inventors: Pary Baluswamy, Scott J. DeBoer, Ceredig Roberts, Tim H. Bossart
  • Patent number: 6693012
    Abstract: A process for the fabrication of an integrated circuit which provides a FET device having reduced GIDL current is described. A semiconductor substrate is provided wherein active regions are separated by an isolation region, and a gate oxide layer is form on the active regions. Gate electrodes are formed upon the gate oxide layer in the active regions. An angled, high dose, ion implant is performed to selectively dope the gate oxide layer beneath an edge of each gate electrode in a gate-drain overlap region, and the fabrication of the integrated circuit is completed.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: February 17, 2004
    Assignee: Micron Technology, Inc.
    Inventors: Chandra V. Mouli, Ceredig Roberts
  • Patent number: 6541809
    Abstract: A method for providing semiconductor openings having a substantially straight wall or other desired etch profile. An etchable material layer is formed having target dopant levels or other etch rate varying characteristics to compensate for the characteristics of a selected etching process to achieve the desired etch profile. The etching process may also be varied to further match the characteristics of the etchable material layer.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: April 1, 2003
    Assignee: Micron Technology, Inc.
    Inventors: Gurtej S. Sandhu, Ceredig Roberts
  • Patent number: 6531728
    Abstract: An etching method includes providing a first insulating material layer on a substrate assembly surface and a second insulating material layer on the first insulating material layer. The first insulating material layer has an etch rate that is greater than the etch rate of the second insulating material layer when exposed to an etch composition. Portions of the first insulating material layer and the second insulating material layer are removed using at least the etch composition. Various types of structures (e.g., contacts, capacitors) are formed with use of the method.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: March 11, 2003
    Assignee: Micron Technology, Inc.
    Inventors: Scott J. DeBoer, Terry L. Gilton, Ceredig Roberts
  • Publication number: 20020050621
    Abstract: A process for the fabrication of an integrated circuit which provides a FET device having reduced GIDL current is described. A semiconductor substrate is provided wherein active regions are separated by an isolation region, and a gate oxide layer is form on the active regions. Gate electrodes are formed upon the gate oxide layer in the active regions. An angled, high dose, ion implant is performed to selectively dope the gate oxide layer beneath an edge of each gate electrode in a gate-drain overlap region, and the fabrication of the integrated circuit is completed.
    Type: Application
    Filed: December 27, 2001
    Publication date: May 2, 2002
    Inventors: Chandra V. Mouli, Ceredig Roberts
  • Publication number: 20020036332
    Abstract: The present invention includes a residue-free overlay target, as well as a method of forming a residue-free overlay target. The residue-free overlay target of the present invention is defined by trenches or pads including a series of raised lines. The raised lines included in the overlay target of the present invention substantially eliminate any surface topography, such as depressions, at the top surface of overlying material layers and, thereby, prevent accumulation of process residue which may obscure the overlay target and inhibit further processing. The method of the present invention may be accomplished and modified using process technology known in the semiconductor fabrication art and includes providing a semiconductor substrate, depositing a resist layer, patterning the resist, and executing a wet or dry etch to create at least one overlay target according to the present invention.
    Type: Application
    Filed: November 28, 2001
    Publication date: March 28, 2002
    Inventors: Pary Baluswamy, Scott J. DeBoer, Ceredig Roberts, Tim H. Bossart