Patents by Inventor Nishant Sinha

Nishant Sinha 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: 20090090692
    Abstract: Embodiments disclosed include methods of processing substrates, including methods of forming conductive connections to substrates. In one embodiment, a method of processing a substrate includes forming a material to be etched over a first material of a substrate. The material to be etched and the first material are of different compositions. The material to be etched is etched in a dry etch chamber to expose the first material. After the etching, the first material is contacted with a non-oxygen-containing gas in situ within the dry etch chamber effective to form a second material physically contacting onto the first material. The second material comprises a component of the first material and a component of the gas. In one embodiment, the first material is contacted with a gas that may or may not include oxygen in situ within the dry etch chamber effective to form a conductive second material.
    Type: Application
    Filed: October 5, 2007
    Publication date: April 9, 2009
    Inventors: Nishant Sinha, Gurtej S. Sandhu
  • Publication number: 20090074950
    Abstract: Some embodiments include methods of forming charge-trapping zones. The methods may include forming nanoparticles, transferring the nanoparticles to a liquid to form a dispersion, forming an aerosol from the dispersion, and then directing the aerosol onto a substrate to form charge-trapping centers comprising the nanoparticles. The charge-trapping zones may be incorporated into flash memory cells.
    Type: Application
    Filed: September 19, 2007
    Publication date: March 19, 2009
    Inventor: Nishant Sinha
  • Publication number: 20090056746
    Abstract: Some embodiments include methods of treating surfaces with aerosol particles. The aerosol particles may be formed as liquid particles, and then passed through a chamber under conditions which change the elasticity of the particles prior to impacting a surface with the particles. The change in elasticity may be an increase in the elasticity, or a decrease in the elasticity. The change in elasticity may be accomplished by causing a phase change of one or more components of the aerosol particles such as, for example, by at least partially freezing the aerosol particles, or by forming entrained bubbles within the aerosol particles. Some embodiments include apparatuses that may be utilized during treatment of surfaces with aerosol particles.
    Type: Application
    Filed: August 29, 2007
    Publication date: March 5, 2009
    Inventors: Gurtej S. Sandhu, Nishant Sinha
  • Publication number: 20090042401
    Abstract: Methods for preventing isotropic removal of materials at corners formed by seams, keyholes, and other anomalies in films or other structures include use of etch blockers to cover or coat such corners. This covering or coating prevents exposure of the corners to isotropic etch solutions and cleaning solutions and, thus, higher material removal rates at the corners than at smoother areas of the structure or film from which material is removed. Solutions, including wet etchants and cleaning solutions, that include at least one type of etch blocker are also disclosed, as are systems for preventing higher rates of material removal at corners formed by seams, crevices, or recesses in a film or other structure. Semiconductor device structures in which etch blockers are located so as to prevent isotropic etchants from removing material from corners of seams, crevices, or recesses in a surface of a film or other structure at undesirably high rates are also disclosed.
    Type: Application
    Filed: August 6, 2007
    Publication date: February 12, 2009
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Nishant Sinha, J. Neil Greeley
  • Publication number: 20080171438
    Abstract: A method of substantially uniformly removing silicon oxide is disclosed. The silicon oxide to be removed includes at least one cavity therein or more than one density or strain therein. The silicon oxide having at least one cavity or more than one density or strain is exposed to a gaseous mixture of NH3 and HF and heated, to substantially uniformly remove the silicon oxide. A method of removing an exposed sacrificial layer without substantially removing exposed isolation regions using the gaseous mixture of NH3 and HF and heat is also disclosed, as is an intermediate semiconductor device structure that includes a semiconductor substrate, a sacrificial layer overlying the semiconductor substrate, a diffusion barrier overlying the sacrificial layer, and exposed isolation regions.
    Type: Application
    Filed: January 11, 2007
    Publication date: July 17, 2008
    Inventors: Nishant Sinha, Gurtej S. Sandhu, Joseph N. Greeley
  • Publication number: 20080102596
    Abstract: Electroless plating can be utilized to form electrical interconnects associated with semiconductor substrates. For instance, a semiconductor substrate can be formed to have a dummy structure thereover with a surface suitable for electroless plating, and to also have a digit line thereover having about the same height as the dummy structure. A layer can be formed over the dummy structure and digit line, and openings can be formed through the layer to the upper surfaces of the dummy structure and digit line. Subsequently, a conductive material can be electroless plated within the openings to form electrical contacts within the openings. The opening extending to the dummy structure can pass through a capacitor electrode, and accordingly the conductive material formed within such opening can be utilized to form electrical contact to the capacitor electrode.
    Type: Application
    Filed: January 2, 2008
    Publication date: May 1, 2008
    Inventors: Nishant Sinha, Dinesh Chopra, Fred Fishburn
  • Patent number: 7345350
    Abstract: A method for forming a conductive via in a semiconductor component is disclosed. The method includes providing a substrate having a first surface and an opposing, second surface. At least one hole is formed in the substrate extending between the first surface and the opposing, second surface. A seed layer is formed on a sidewall defining the at least one hole of the substrate and coated with a conductive layer, and a conductive or nonconductive filler material is introduced into the remaining space within the at least one hole. A method of forming a conductive via through a substrate using a blind hole is also disclosed. Semiconductor components and electronic systems having substrates including the conductive via of the present invention are also disclosed.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: March 18, 2008
    Assignee: Micron Technology, Inc.
    Inventor: Nishant Sinha
  • Publication number: 20080060193
    Abstract: A method of fabricating a substrate is disclosed. Apertures are formed in a substrate blank. A conductive layer is formed on opposing surfaces of the substrate, as well as inside the apertures. Conductive elements are defined on one or both opposing surfaces by masking and etching. Additional layers of conductive materials may be used to provide a barrier layer and a noble metal cap for the conductive elements. The methods of the present invention may be used to fabricate an interposer for use in packaging semiconductor devices or a test substrate. Substrate precursor structures are also disclosed.
    Type: Application
    Filed: November 16, 2007
    Publication date: March 13, 2008
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Warren Farnworth, Steven McDonald, Nishant Sinha, William Hiatt
  • Patent number: 7335935
    Abstract: Electroless plating can be utilized to form electrical interconnects associated with semiconductor substrates. For instance, a semiconductor substrate can be formed to have a dummy structure thereover with a surface suitable for electroless plating, and to also have a digit line thereover having about the same height as the dummy structure. A layer can be formed over the dummy structure and digit line, and openings can be formed through the layer to the upper surfaces of the dummy structure and digit line. Subsequently, a conductive material can be electroless plated within the openings to form electrical contacts within the openings. The opening extending to the dummy structure can pass through a capacitor electrode, and accordingly the conductive material formed within such opening can be utilized to form electrical contact to the capacitor electrode.
    Type: Grant
    Filed: July 22, 2005
    Date of Patent: February 26, 2008
    Assignee: Micron Technology, Inc.
    Inventors: Nishant Sinha, Dinesh Chopra, Fred D. Fishburn
  • Publication number: 20080041725
    Abstract: An electrolyte solution, methods, and systems for selectively removing a conductive metal from a substrate are provided. The electrolyte solution comprising nanoparticles that are more noble than the conductive metal being removed, is applied to a substrate to remove the conductive metal selectively relative to a dielectric material without application of an external potential or contact of a processing pad with the surface of the substrate. The solutions and methods can be applied, for example, to remove a conductive metal layer (e.g., barrier metal) selectively relative to dielectric material and to a materially different conductive metal (e.g., copper interconnect) without application of an external potential or contact of a processing pad with the surface of the substrate.
    Type: Application
    Filed: August 21, 2006
    Publication date: February 21, 2008
    Applicant: Micron Technology, Inc.
    Inventors: Rita J. Klein, Dale W. Collins, Paul Morgan, Joseph N. Greeley, Nishant Sinha
  • Patent number: 7316063
    Abstract: A method of fabricating a substrate is disclosed. Apertures are formed in a substrate blank. A conductive layer is formed on opposing surfaces of the substrate, as well as inside the apertures. Conductive elements are defined on one or both opposing surfaces by masking and etching. Additional layers of conductive materials may be used to provide a barrier layer and a noble metal cap for the conductive elements. The methods of the present invention may be used to fabricate an interposer for use in packaging semiconductor devices or a test substrate. Substrate precursor structures are also disclosed.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: January 8, 2008
    Assignee: Micron Technology, Inc.
    Inventors: Warren M. Farnworth, Steven M. McDonald, Nishant Sinha, William M. Hiatt
  • Patent number: 7273816
    Abstract: The invention includes methods of forming capacitor structures and removing organic material. An organic material, such as a photoresist, is disposed on a substrate. The organic material is contacted with a chemical mechanical polishing pad and a polishing fluid to remove the organic material from the substrate. The polishing fluid can be essentially free of particles, and can be water.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: September 25, 2007
    Assignee: Micron Technology, Inc.
    Inventor: Nishant Sinha
  • Patent number: 7265052
    Abstract: The present invention is generally directed to various methods of forming conductive through-wafer vias. In one illustrative embodiment, the method comprises providing a layer of semiconducting material, forming a layer of metal on a first side of the layer of semiconducting material, forming an opening in the layer of semiconducting material to thereby expose a portion of the layer of metal, the opening extending from at least a second side of the layer of semiconducting material to the layer of metal, and performing a deposition process to form a conductive contact in the opening using the exposed portion of the metal layer as a seed layer.
    Type: Grant
    Filed: July 18, 2005
    Date of Patent: September 4, 2007
    Assignee: Micron Technology, Inc.
    Inventor: Nishant Sinha
  • Patent number: 7256116
    Abstract: A method for fabricating a semiconductor component includes the steps of providing a semiconductor die, forming a plurality of redistribution contacts on the die, forming a plurality of interconnect contacts on the redistribution contacts, and forming an insulating layer on the interconnect contacts while leaving the tip portions exposed. The method also includes the step of forming terminal contacts on the interconnect contacts, or alternately forming conductors in electrical communication with the interconnect contacts and then forming terminal contacts in electrical communication with the conductors.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: August 14, 2007
    Assignee: Micron Technology, Inc.
    Inventors: William M. Hiatt, Warren M. Farnworth, Charles M. Watkins, Nishant Sinha
  • Publication number: 20070169343
    Abstract: Substrate precursor structures include a substrate blank having at least one aperture extending substantially through the substrate blank. At least a portion of at least one conductive layer covers a surface of the at least one aperture of the substrate blank. A mask pattern covers a portion of the at least one conductive layer and exposes another portion of the at least one conductive layer to define at least one conductive element, at least a portion of which extends over the surface of the at least one aperture.
    Type: Application
    Filed: March 13, 2007
    Publication date: July 26, 2007
    Inventors: Warren Farnworth, Steven McDonald, Nishant Sinha, William Hiatt
  • Publication number: 20070170595
    Abstract: A semiconductor device component includes at least one conductive via. The at least one conductive via may include a seed layer for facilitating adhesion of a conductive material within the via aperture, a barrier material and solder, or a silicon-containing filler. Systems including such semiconductor device components are also disclosed.
    Type: Application
    Filed: March 12, 2007
    Publication date: July 26, 2007
    Inventor: Nishant Sinha
  • Publication number: 20070166991
    Abstract: A method for forming conductive vias in a substrate of a semiconductor device component includes forming one or more holes, or apertures or cavities, in the substrate so as to extend only partially through the substrate. A barrier layer, such as an insulative layer, may be formed on surfaces of each hole. Surfaces within each hole may be coated with a seed layer, which facilitates adhesion of conductive material within each hole. Conductive material is introduced into each hole. Introduction of the conductive material may be effected by deposition or plating. Alternatively, conductive material in the form of solder may be introduced into each hole.
    Type: Application
    Filed: March 12, 2007
    Publication date: July 19, 2007
    Inventor: Nishant Sinha
  • Patent number: 7244678
    Abstract: A planarization method includes providing a second and/or third row Group VIII metal-containing surface (preferably, a platinum-containing surface) and positioning it for contact with a polishing surface in the presence of a planarization composition that includes a complexing agent.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: July 17, 2007
    Assignee: Micron Technology, Inc.
    Inventors: Nishant Sinha, Rita J. Klein
  • Publication number: 20070158853
    Abstract: The present invention is generally directed to various methods of forming conductive through-wafer vias. In one illustrative embodiment, the method comprises providing a layer of semiconducting material, forming a layer of metal on a first side of the layer of semiconducting material, forming an opening in the layer of semiconducting material to thereby expose a portion of the layer of metal, the opening extending from at least a second side of the layer of semiconducting material to the layer of metal, and performing a deposition process to form a conductive contact in the opening using the exposed portion of the metal layer as a seed layer.
    Type: Application
    Filed: February 21, 2007
    Publication date: July 12, 2007
    Inventor: Nishant Sinha
  • Publication number: 20070143742
    Abstract: A set of techniques for analyzing concurrent programs that combines the power of symbolic model checking to explore large state spaces, and partial order and transaction-based reduction techniques to manage the size of explored state space.
    Type: Application
    Filed: December 15, 2006
    Publication date: June 21, 2007
    Applicant: NEC LABORATORIES AMERICA
    Inventors: Vineet KAHLON, Aarti GUPTA, Nishant SINHA