Patents by Inventor Hormazdyar M. Dalal

Hormazdyar M. Dalal 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: 8536685
    Abstract: In one embodiment, a semiconductor device is formed to include a plurality of conductor layers that interconnect electrical signals between semiconductor elements of the semiconductor device. A metal shield layer is formed overlying a portion of the plurality of conductor layers. A signal re-distribution layer is formed overlying the metal shield layer.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: September 17, 2013
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Hormazdyar M. Dalal, Jagdish Prasad
  • Publication number: 20120119340
    Abstract: In one embodiment, a semiconductor device is formed to include a plurality of conductor layers that interconnect electrical signals between semiconductor elements of the semiconductor device. A metal shield layer is formed overlying a portion of the plurality of conductor layers. A signal re-distribution layer is formed overlying the metal shield layer.
    Type: Application
    Filed: January 24, 2012
    Publication date: May 17, 2012
    Inventors: Hormazdyar M. Dalal, Jagdish Prasad
  • Patent number: 8129266
    Abstract: In one embodiment, a semiconductor device is formed to include a plurality of conductor layers that interconnect electrical signals between semiconductor elements of the semiconductor device. A metal shield layer is formed overlying a portion of the plurality of conductor layers. A signal re-distribution layer is formed overlying the metal shield layer.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: March 6, 2012
    Assignee: Semiconductor Componenets Industries, LLC
    Inventors: Hormazdyar M. Dalal, Jagdish Prasad
  • Publication number: 20100006989
    Abstract: In one embodiment, a semiconductor device is formed to include a plurality of conductor layers that interconnect electrical signals between semiconductor elements of the semiconductor device. A metal shield layer is formed overlying a portion of the plurality of conductor layers. A signal re-distribution layer is formed overlying the metal shield layer.
    Type: Application
    Filed: July 9, 2008
    Publication date: January 14, 2010
    Inventors: Hormazdyar M. Dalal, Jagdish Prasad
  • Patent number: 6972209
    Abstract: A multilevel semiconductor integrated circuit (IC) structure including a first interconnect level including a layer of dielectric material over a semiconductor substrate, the layer of dielectric material comprising a dense material for passivating semiconductor devices and local interconnects underneath; multiple interconnect layers of dielectric material formed above the layer of dense dielectric material, each layer of dielectric material including at least a layer of low-k dielectric material; and, a set of stacked via-studs in the low-k dielectric material layers, each of said set of stacked via studs interconnecting one or more patterned conductive structures, a conductive structure including a cantilever formed in the low-k dielectric material.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: December 6, 2005
    Assignee: International Business Machines Corporation
    Inventors: Birendra N. Agarwala, Conrad A. Barile, Hormazdyar M. Dalal, Brett H. Engle, Michael Lane, Ernest Levine, Xiao Hu Liu, Vincent McGahay, John F. McGrath, Conal E. Murray, Jawahar P. Nayak, Du B. Nguyen, Hazara S. Rathore, Thomas M. Shaw
  • Publication number: 20040101663
    Abstract: A multilevel semiconductor integrated circuit (IC) structure including a first interconnect level including a layer of dielectric material over a semiconductor substrate, the layer of dielectric material comprising a dense material for passivating semiconductor devices and local interconnects underneath; multiple interconnect layers of dielectric material formed above the layer of dense dielectric material, each layer of dielectric material including at least a layer of low-k dielectric material; and, a set of stacked via-studs in the low-k dielectric material layers, each of said set of stacked via studs interconnecting one or more patterned conductive structures, a conductive structure including a cantilever formed in the low-k dielectric material.
    Type: Application
    Filed: November 27, 2002
    Publication date: May 27, 2004
    Inventors: Birendra N. Agarwala, Conrad A. Barile, Hormazdyar M. Dalal, Brett H. Engel, Michael Lane, Ernest Levine, Xiao Hu Liu, Vincent McGahay, John F. McGrath, Conal E. Murray, Jawahar P. Nayak, Du B. Nguyen, Hazara S. Rathore, Thomas M. Shaw
  • Patent number: 6618267
    Abstract: A multi-level package, and method for making same, that offers a small size with compartmentalized areas that allow for radiation shielding is disclosed. In its simplest embodiment, the invention comprises two cards and an interposer interposed between the two cards. The interposer preferably has an opening, and the combination of the interposer's opening and the two cards form a cavity. The cavity allows for a high amount of components to be packed into a small, three-dimensional space. The interposer supports can act like a Faraday shield. The two cards and interposer can be multi-layered and support any type of chip or package connection on each side of each card or interposer, including through-hole, surface mount, and direct-chip attachment connections. Finally, pick-up plates or heat sinks can be attached to the package.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: September 9, 2003
    Assignee: International Business Machines Corporation
    Inventors: Hormazdyar M. Dalal, Gene Joseph Gaudenzi
  • Patent number: 6348731
    Abstract: A method of providing sub-half-micron copper interconnections with improved electromigration and corrosion resistance. The method includes double damascene using electroplated copper, where the seed layer is converted to an intermetallic layer. A layer of copper intermetallics with hafnium, lanthanum, zirconium or tin, is provided to improve the electromigration resistance and to reduce defect sensitivity. A method is also provided to form a cap atop copper lines, to improve corrosion resistance, which fully covers the surface. Structure and methods are also described to improve the electromigration and corrosion resistance by incorporating carbon atoms in copper interstitial positions.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: February 19, 2002
    Assignee: International Business Machines Corporation
    Inventors: Leon Ashley, Hormazdyar M. Dalal, Du Binh Nguyen, Hazara S. Rathore, Richard G. Smith
  • Patent number: 6336262
    Abstract: A capacitor having a multilevel interconnection technology and process thereof. Also disclosed is a process of electrically connecting a capacitor to an object, comprising the steps of first obtaining a capacitor. At least one solder ball is reflowed and secured onto the capacitor. The solder ball is in electrical communication with the capacitor through a contacting means. On this reflowed solder ball a cap of low melting point metal is secured. This can be done in a number of ways. The preferred way is to positioning a mask over the solder ball such that a portion of the solder ball is exposed through openings in the mask. At least one layer of a low melting point metal is deposited on the exposed surface of the solder ball through the mask, and thereby forming a capacitor with a multilevel interconnect cap. The low melting point metal can interact with the surface of the solder ball to form a cap of an eutectic or a liquefied portion. The cap portion can then be joined to the object.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: January 8, 2002
    Assignee: International Business Machines Corporation
    Inventors: Hormazdyar M. Dalal, Gene Joseph Gaudenzi, Rebecca Y. Gorrell, Mark A. Takacs, Kenneth J. Travis, Jr.
  • Patent number: 6323554
    Abstract: Capping a low resistivity metal conductor line or via with a refractory metal allows for effectively using chemical-mechanical polishing techniques because the hard, reduced wear, properties of the refractory metal do not scratch, corrode, or smear during chemical-mechanical polishing. Conductive lines and vias are created using a combination of both physical vapor deposition (e.g., evaporation or collimated sputtering) of a low resistivity metal or alloy followed by chemical vapor deposition (CVD) of a refractory metal and subsequent planarization. Altering a ratio of SiH4 to WF6 during application of the refractory metal cap by CVD allows for controlled incorporation of silicon into the tungsten capping layer. Collimated sputtering allows for creating a refractory metal liner in an opening in a dielectric which is suitable as a diffusion barrier to copper based metalizations as well as CVD tungsten.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: November 27, 2001
    Assignee: International Business Machines Corporation
    Inventors: Rajiv V. Joshi, Jerome J. Cuomo, Hormazdyar M. Dalal, Louis L. Hsu
  • Patent number: 6294835
    Abstract: The present invention relates generally to a new sequence of methods and materials to improve the process yield and to enhance the reliability of multilevel interconnection with sub-half-micron geometry by making judicious use of composite insulators to prevent metal thinning over hard metal via plugs and by preventing process induced metal spike formation. The method takes advantage of the double damascene process. The metal spikes and the metal thinning resulting from over etch process is prevented in this method by using a pair of insulators which require different chemistries for etching.
    Type: Grant
    Filed: August 2, 1999
    Date of Patent: September 25, 2001
    Assignee: International Business Machines Corporation
    Inventors: Hormazdyar M. Dalal, Du Binh Nguyen, Hazara S. Rathore
  • Patent number: 6287954
    Abstract: A method of providing sub-half-micron copper interconnections with improved electromigration and corrosion resistance. The method includes double damascene using electroplated copper, where the seed layer is converted to an intermetallic layer. A layer of copper intermetallics with hafnium, lanthanum, zirconium or tin, is provided to improve the electromigration resistance and to reduce defect sensitivity. A method is also provided to form a cap atop copper lines, to improve corrosion resistance, which fully covers the surface. Structure and methods are also described to improve the electromigration and corrosion resistance by incorporating carbon atoms in copper interstitial positions.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: September 11, 2001
    Assignee: International Business Machines Corporation
    Inventors: Leon Ashley, Hormazdyar M. Dalal, Du Binh Nguyen, Hazara S. Rathore, Richard G. Smith
  • Publication number: 20010013423
    Abstract: A structure and method is disclosed for directly attaching a device or package on flexible organic circuit carriers having low cost and high reliability.
    Type: Application
    Filed: September 18, 1997
    Publication date: August 16, 2001
    Inventors: HORMAZDYAR M. DALAL, KENNETH M. FALLON, GENE J. GAUDENZI, CYNTHIA S. MILKOVICH
  • Patent number: 6258710
    Abstract: A method of providing sub-half-micron copper interconnections with improved electromigration and corrosion resistance. The method includes double damascene using electroplated copper, where the seed layer is deposited by chemical vapor deposition, or by physical vapor deposition in a layer less than about 800 angstroms.
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: July 10, 2001
    Assignee: International Business Machines Corporation
    Inventors: Hazara S. Rathore, Hormazdyar M. Dalal, Paul S. McLaughlin, Du B. Nguyen, Richard G. Smith, Alexander J. Swinton, Richard A. Wachnik
  • Patent number: 6147402
    Abstract: Capping a low resistivity metal conductor line or via with a refractory metal allows for effectively using chemical-mechanical polishing techniques because the hard, reduced wear, properties of the refractory metal do not scratch, corrode, or smear during chemical-mechanical polishing. Superior conductive lines and vias are created using a combination of both physical vapor deposition (e.g., evaporation or collimated sputtering) of a low resistivity metal or alloy followed by chemical vapor deposition (CVD) of a refractory metal and subsequent planarization. Altering a ratio of SiH.sub.4 to WF.sub.6 during application of the refractory metal cap by CVD allows for controlled incorporation of silicon into the tungsten capping layer. Collimated sputtering allows for creating a refractory metal liner in an opening in a dielectric which is suitable as a diffusion barrier to copper based metalizations as well as CVD tungsten.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: November 14, 2000
    Assignee: International Business Machines Corporation
    Inventors: Rajiv V. Joshi, Jerome J. Cuomo, Hormazdyar M. Dalal, Louis L. Hsu
  • Patent number: 6133139
    Abstract: The present invention relates generally to a new sequence of methods and materials to improve the process yield and to enhance the reliability of multilevel interconnection with sub-half-micron geometry by making judicious use of composite insulators to prevent metal thinning over hard metal via plugs and by preventing process induced metal spike formation. The method takes advantage of the double damascene process. The metal spikes and the metal thinning resulting from over etch process is prevented in this method by using a pair of insulators which require different chemistries for etching.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: October 17, 2000
    Assignee: International Business Machines Corporation
    Inventors: Hormazdyar M. Dalal, Du Binh Nguyen, Hazara S. Rathore
  • Patent number: 6130161
    Abstract: A method of providing sub-half-micron copper interconnections with improved electromigration and corrosion resistance. The method includes double damascene using electroplated copper, where the seed layer is converted to an intermetallic layer. A layer of copper intermetallics with halfnium, lanthanum, zirconium or tin, is provided to improve the electromigration resistance and to reduce defect sensitivity. A method is also provided to form a cap atop copper lines, to improve corrosion resistance, which fully covers the surface. Structure and methods are also described to improve the electromigration and corrosion resistance by incorporating carbon atoms in copper intersititial positions.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: October 10, 2000
    Assignee: International Business Machines Corporation
    Inventors: Leon Ashley, Hormazdyar M. Dalal, Du Binh Nguyen, Hazara S. Rathore, Richard G. Smith
  • Patent number: 6069068
    Abstract: A method of providing sub-half-micron copper interconnections with improved electromigration and corrosion resistance. The method includes double damascene using electroplated copper, where the seed layer is deposited by chemical vapor deposition, or by physical vapor deposition in a layer less than about 800 angstroms.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: May 30, 2000
    Assignee: International Business Machines Corporation
    Inventors: Hazara S. Rathore, Hormazdyar M. Dalal, Paul S. McLaughlin, Du B. Nguyen, Richard G. Smith, Alexander J. Swinton, Richard A. Wachnik
  • Patent number: 6033939
    Abstract: A method is provided for the fabrication of fuses within a semiconductor IC structure, which fuses are delectable by a laser pulse or a low voltage electrical pulse typically below 3.5 V to reroute the electrical circuitry of the structure to remove a faulty element. The fuses are formed on the surface of circuitry which is coplanar with a surrounding dielectric such as the circuitry formed by a Damascene method. A preferred fuse material is silicon-chrome-oxygen and the preferred circuitry is copper.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: March 7, 2000
    Assignee: International Business Machines Corporation
    Inventors: Birendra N. Agarwala, Hormazdyar M. Dalal, Du B. Nguyen, Hazara S. Rathore
  • Patent number: 5981374
    Abstract: The present invention relates to the field of semiconductor manufacturing, and more specifically to methods of forming sub-half-micron multi-level interconnect structures for integrated circuits. The inventive structure and process are spike free and that has resulted in improved circuit performance, reliability and process yields. The inventive structure and process have a plurality of insulator layers where each of the adjoining insulator layers are of a different material.
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: November 9, 1999
    Assignee: International Business Machines Corporation
    Inventors: Hormazdyar M. Dalal, Du Binh Nguyen, Hazara S. Rathore