Patents by Inventor Garry A. Mercaldi

Garry A. Mercaldi 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: 20020094632
    Abstract: A capacitor fabrication method may include atomic layer depositing a conductive barrier layer to oxygen diffusion over the first electrode. A method may instead include chemisorbing a layer of a first precursor at least one monolayer thick over the first electrode and chemisorbing a layer of a second precursor at least one monolayer thick on the first precursor layer, a chemisorption product of the first and second a precursor layers being comprised by a layer of a conductive barrier material. The barrier layer may be sufficiently thick and dense to reduce oxidation of the first electrode by oxygen diffusion from over the barrier layer. An alternative method may include forming a first capacitor electrode over a substrate, the first electrode having an inner surface area per unit area and an outer surface area per unit area that are both greater than an outer surface area per unit area of the substrate. A capacitor dielectric layer and a second capacitor electrode may be formed over the dielectric layer.
    Type: Application
    Filed: January 15, 2002
    Publication date: July 18, 2002
    Inventors: Vishnu K. Agarwal, Garry A. Mercaldi
  • Publication number: 20020090775
    Abstract: A dielectric insulating composite for insulating a floating gate from a control gate in a non-volatile memory is described. A material, such as an undoped polysilicon, amorphous silicon, or amorphous polysilicon or a silicon rich nitride, is inserted in the gate structure. The oxide film that results from the oxidation of these films is relatively free from impurities. As a result, charge leakage between the floating gate and control gate is reduced.
    Type: Application
    Filed: January 30, 2002
    Publication date: July 11, 2002
    Applicant: Micron Technology, Inc.
    Inventors: Michael Nuttall, Garry A. Mercaldi
  • Patent number: 6417015
    Abstract: Semiconductor processing methods and defect detection methods are described. In one embodiment, a semiconductor wafer in process is provided and a material is formed or deposited over the wafer. The material is discernably deposited over defective wafer surface areas and not appreciably deposited over non-defective wafer surface areas. Subsequently, the wafer surface areas are inspected to identify defective areas. In another embodiment, a substrate is provided having an exposed region containing surface defects. A defect-highlighting material is substantially selectively deposited over surface defects and not appreciably over other exposed regions. The substrate is subsequently inspected for the deposited defect-highlighting material. In yet another embodiment, a dielectric layer is formed over a substrate outer surface and the substrate is processed in a manner which can give rise to a plurality of randomly-distributed dielectric layer features.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: July 9, 2002
    Assignee: Micron Technology, Inc.
    Inventors: Michael Nuttall, Garry A. Mercaldi
  • Patent number: 6392284
    Abstract: A semiconductor structure includes a dielectric layer having first and second opposing sides. A conductive layer is adjacent to the first side of the dielectric layer and is coupled to a first terminal, and a conductive barrier layer is adjacent to the second side of the dielectric layer and is coupled to a second terminal. The conductive barrier layer may be formed from tungsten nitride, tungsten silicon nitride, titanium silicon nitride or other barrier materials.
    Type: Grant
    Filed: July 15, 1999
    Date of Patent: May 21, 2002
    Assignee: Micron Technology, Inc.
    Inventors: Randhir P. S. Thakur, Garry A. Mercaldi, Michael Nuttall
  • Patent number: 6387716
    Abstract: Semiconductor processing methods and defect detection methods are described. In one embodiment, a semiconductor wafer in process is provided and a material is formed or deposited over the wafer. The material is discernably deposited over defective wafer surface areas and not appreciably deposited over non-defective wafer surface areas. Subsequently, the wafer surface areas are inspected to identify defective areas. In another embodiment, a substrate is provided having an exposed region containing surface defects. A defect-highlighting material is substantially selectively deposited over surface defects and not appreciably over other exposed regions. The substrate is subsequently inspected for the deposited defect-highlighting material. In yet another embodiment, a dielectric layer is formed over a substrate outer surface and the substrate is processed in a manner which can give rise to a plurality of randomly-distributed dielectric layer features.
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: May 14, 2002
    Assignee: Micron Technology, Inc.
    Inventors: Michael Nuttall, Garry A. Mercaldi
  • Publication number: 20020043695
    Abstract: A method of forming an ultra thin dielectric film or dielectric layer on a semiconductor device is disclosed. In one embodiment of the present invention, an oxide layer is formed over a substrate. A silicon-containing material is deposited over the oxide layer. The deposited material and oxide layer are processed in a plasma to form the dielectric layer or ultra thin dielectric film. The silicon-containing dielectric layer can allow for improved or smaller semiconductor devices. The silicon containing dielectric layer can be fabricated at low temperatures. Improved or smaller semiconductor devices may be accomplished by reducing leakage, increasing the dielectric constant or fabricating at lower temperatures.
    Type: Application
    Filed: July 17, 2001
    Publication date: April 18, 2002
    Inventors: Vishnu Agarwal, Garry A. Mercaldi
  • Patent number: 6368919
    Abstract: A dielectric insulating composite for insulating a floating gate from a control gate in a non-volatile memory is described. A material, such as an undoped polysilicon, amorphous silicon, or amorphous polysilicon or a silicon rich nitride, is inserted in the gate structure. The oxide film that results from the oxidation of these films is relatively free from impurities. As a result, charge leakage between the floating gate and control gate is reduced.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: April 9, 2002
    Assignee: Micron Technology, Inc.
    Inventors: Michael Nuttall, Garry A. Mercaldi
  • Patent number: 6358793
    Abstract: Container structures for use in integrated circuits and methods of their manufacture without the use of mechanical planarization such as chemical-mechanical planarization (CMP), thus eliminating CMP-induced defects and variations. The methods utilize localized masking of holes for protection of the inside of the holes during non-mechanical removal of exposed surface layers. The localized masking is accomplished through differential exposure of a resist layer to electromagnetic or thermal energy. The container structures are adapted for use in memory cells and apparatus incorporating such memory cells, as well as other integrated circuits.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: March 19, 2002
    Assignee: Micron Technology, Inc.
    Inventors: Donald L. Yates, Garry A. Mercaldi
  • Publication number: 20020024086
    Abstract: Container structures for use in integrated circuits and methods of their manufacture without the use of mechanical planarization such as chemical-mechanical planarization (CMP), thus eliminating CMP-induced defects and variations. The methods utilize localized masking of holes for protection of the inside of the holes during non-mechanical removal of exposed surface layers. The localized masking is accomplished through differential exposure of a resist layer to electromagnetic or thermal energy. The container structures are adapted for use in memory cells and apparatus incorporating such memory cells, as well as other integrated circuits.
    Type: Application
    Filed: July 24, 2001
    Publication date: February 28, 2002
    Applicant: Micron Technology, Inc.
    Inventors: Donald L. Yates, Garry A. Mercaldi
  • Publication number: 20020025650
    Abstract: Structures and methods for making a semiconductor structure are discussed. The semiconductor structure includes a rough surface having protrusions formed from an undoped silicon film. If the semiconductor structure is a capacitor, the protrusions help to increase the capacitance of the capacitor. The semiconductor structure also includes a relatively smooth surface abutting the rough surface, wherein the relatively smooth surface is formed from a polycrystalline material.
    Type: Application
    Filed: September 26, 2001
    Publication date: February 28, 2002
    Inventors: Randhir P.S. Thakur, Garry A. Mercaldi, Michael Nuttall, Shenlin Chen, Er-Xuan Ping
  • Publication number: 20020006702
    Abstract: A dielectric insulating composite for insulating a floating gate from a control gate in a non-volatile memory is described. A material, such as an undoped polysilicon, amorphous silicon, or amorphous polysilicon or a silicon rich nitride, is inserted in the gate structure. The oxide film that results from the oxidation of these films is relatively free from impurities. As a result, charge leakage between the floating gate and control gate is reduced.
    Type: Application
    Filed: January 19, 1999
    Publication date: January 17, 2002
    Inventors: MICHAEL NUTTALL, GARRY A. MERCALDI
  • Patent number: 6316370
    Abstract: The present invention provides an etching composition which includes a polyhydric alcohol in combination with two inorganic acids. Preferably the etching composition of the present invention is a mixture of a glycol, nitric acid and hydrofluoric acid, with propylene glycol being preferred. The etching composition of the present invention achieves a selectivity of greater than 70:1, doped material to undoped material. The present invention provides an etching formulation which has increased selectivity of doped polysilicon to undoped polysilicon and provides an efficient integrated circuit fabrication process without requiring time consuming and costly processing modifications to the etching apparatus or production apparatus.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: November 13, 2001
    Assignee: Micron Technology, Inc.
    Inventors: Garry A. Mercaldi, Donald L. Yates
  • Publication number: 20010024836
    Abstract: Semiconductor processing methods and defect detection methods are described. In one embodiment, a semiconductor wafer in process is provided and a material is formed or deposited over the wafer. The material is discernably deposited over defective wafer surface areas and not appreciably deposited over non-defective wafer surface areas. Subsequently, the wafer surface areas are inspected to identify defective areas. In another embodiment, a substrate is provided having an exposed region containing surface defects. A defect-highlighting material is substantially selectively deposited over surface defects and not appreciably over other exposed regions. The substrate is subsequently inspected for the deposited defect-highlighting material. In yet another embodiment, a dielectric layer is formed over a substrate outer surface and the substrate is processed in a manner which can give rise to a plurality of randomly-distributed dielectric layer features.
    Type: Application
    Filed: May 29, 2001
    Publication date: September 27, 2001
    Inventors: Michael Nuttal, Garry A. Mercaldi
  • Patent number: 6251693
    Abstract: Semiconductor processing methods and defect detection methods are described. In one embodiment, a semiconductor wafer in process is provided and a material is formed or deposited over the wafer. The material is discernably deposited over defective wafer surface areas and not appreciably deposited over non-defective wafer surface areas. Subsequently, the wafer surface areas are inspected to identify defective areas. In another embodiment, a substrate is provided having an exposed region containing surface defects. A defect-highlighting material is substantially selectively deposited over surface defects and not appreciably over other exposed regions. The substrate is subsequently inspected for the deposited defect-highlighting material. In yet another embodiment, a dielectric layer is formed over a substrate outer surface and the substrate is processed in a manner which can give rise to a plurality of randomly-distributed dielectric layer features.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: June 26, 2001
    Assignee: Micron Technology, Inc.
    Inventors: Michael Nuttall, Garry A. Mercaldi
  • Publication number: 20010004553
    Abstract: The present invention provides an etching composition which includes a polyhydric alcohol in combination with two inorganic acids. Preferably the etching composition of the present invention is a mixture of a glycol, nitric acid and hydrofluoric acid, with propylene glycol being preferred. The etching composition of the present invention achieves a selectivity of greater than 70:1, doped material to undoped material. The present invention provides an etching formulation which has increased selectivity of doped polysilicon to undoped polysilicon and provides an efficient integrated circuit fabrication process without requiring time consuming and costly processing modifications to the etching apparatus or production apparatus.
    Type: Application
    Filed: April 5, 1999
    Publication date: June 21, 2001
    Inventors: GARRY A. MERCALDI, DONALD L. YATES
  • Patent number: 6225157
    Abstract: A semiconductor structure includes a dielectric layer having first and second opposing sides. A conductive layer is adjacent to the first side of the dielectric layer and is coupled to a first terminal, and a conductive barrier layer is adjacent to the second side of the dielectric layer and is coupled to a second terminal. The conductive barrier layer may be formed from tungsten nitride, tungsten silicon nitride, titanium silicon nitride or other barrier materials.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: May 1, 2001
    Assignee: Micron Technology, Inc.
    Inventors: Randhir P. S. Thakur, Garry A. Mercaldi, Michael Nuttall
  • Patent number: 6150706
    Abstract: A semiconductor structure includes a dielectric layer having first and second opposing sides. A conductive layer is adjacent to the first side of the dielectric layer and is coupled to a first terminal, and a conductive barrier layer is adjacent to the second side of the dielectric layer and is coupled to a second terminal. The conductive barrier layer may be formed from tungsten nitride, tungsten silicon nitride, titanium silicon nitride or other barrier materials.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: November 21, 2000
    Assignee: Micron Technology, Inc.
    Inventors: Randhir P. S. Thakur, Garry A. Mercaldi, Michael Nuttall
  • Patent number: 5976990
    Abstract: An exemplary implementation of the present invention discloses a semiconductor fabrication method for forming a film in a reactor. Process conditions (temperature and pressure) are initially stabilized prior to a film deposition cycle. Once process conditions are stable, chemical elements of are nucleated onto a substrate surface to form a nucleation surface of the film. The bulk portion of the film is then deposited onto the nucleation surface. Finally, after the bulk of the film is deposited the surface of the film is conditioned. To tailor a film the process conditions are varied during the film deposition cycle wherein at least one of the pressures and temperatures is varied by at least 10%. In a specific implementation, a capacitor dielectric of silicon nitride is tailored by varying the pressure for the bulk film deposition and by varying both the temperature and pressure for the film surface formation phase.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: November 2, 1999
    Assignee: Micron Technology, Inc.
    Inventors: Garry A. Mercaldi, Michael L. Nuttall, Randhir P. S. Thankur
  • Patent number: 5969983
    Abstract: A semiconductor structure includes a dielectric layer having first and second opposing sides. A conductive layer is adjacent to the first side of the dielectric layer and is coupled to a first terminal, and a conductive barrier layer is adjacent to the second side of the dielectric layer and is coupled to a second terminal. The conductive barrier layer may be formed from tungsten nitride, tungsten silicon nitride, titanium silicon nitride or other barrier materials.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: October 19, 1999
    Assignee: Micron Technology, Inc.
    Inventors: Randhir P. S. Thakur, Garry A. Mercaldi, Michael Nuttall