Patents by Inventor Ruediger Held

Ruediger Held 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: 20150200355
    Abstract: In one aspect, a method of fabricating a via in a hole of an isolation material includes depositing a first conductive material in the hole of the isolation material, removing a portion of the first conductive material deposited in the hole, depositing a second conductive material on the first conductive material in the hole and removing, using chemical-mechanical polishing (CMP), a portion of the second conductive material deposited on the first conductive material.
    Type: Application
    Filed: January 15, 2014
    Publication date: July 16, 2015
    Applicant: Allegro Microsystems, LLC
    Inventors: David G. Erie, Ruediger Held
  • Patent number: 7157792
    Abstract: A method is provided for processing a semiconductor topography such that its upper surface is substantially planar, particularly including a region adjacent to an outer edge of a semiconductor topography. The method may include preferentially removing a portion of an upper layer of the topography in a region adjacent to an outer edge of the semiconductor topography. The region may extend greater than approximately 3 mm inward from the outer edge of the semiconductor topography. The method may also include polishing the semiconductor topography such that the upper surface of the semiconductor topography is substantially planar. Therefore, although a rate of polishing adjacent to an outer edge of the semiconductor topography may be slower than a rate of polishing adjacent to a center of the semiconductor topography, a thickness variation of the polished upper layer across the entirety of the semiconductor topography may be less than approximately 500 angstroms.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: January 2, 2007
    Assignee: Cypress Semiconductor Corp.
    Inventors: Venuka K. Jayatilaka, Matthew D. Buchanan, Ruediger Held
  • Patent number: 6866571
    Abstract: A polishing system is provided which includes an o-ring adapted to couple a carrier ring to a carrier plate. In some embodiments, one component may include a groove with which to receive the o-ring and the other component may be substantially absent of a groove adapted to receive an o-ring. Alternatively, both components may include a groove with which to receive the o-ring. Consequently, a semiconductor polishing system component comprising a notch adapted to receive an o-ring is also provided herein. In particular, the semiconductor polishing system component may be adapted to couple to another semiconductor polishing system component by use of the o-ring. In addition, a method for assembling a semiconductor polishing system is contemplated herein, which includes positioning a first component of the semiconductor polishing system against a portion of an o-ring protruding from a groove arranged within a second component of the semiconductor polishing system.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: March 15, 2005
    Assignee: Cypress Semiconductor Corp.
    Inventor: Ruediger Held
  • Patent number: 6786809
    Abstract: A CMP system, a wafer carrier, and components of a wafer carrier are provided for processing a semiconductor topography. In particular, a CMP system, a wafer carrier, and components of a wafer carrier are provided in which a greater pressure may be applied in a first portion of a semiconductor topography than in a second portion of the topography. The first portion may, for example, be adjacent to an outer edge of the topography, while the second portion may include the center of the topography. Alternatively, the first portion and second portion of the semiconductor topography may include any region of the topography. The wafer carrier components may include a carrier plate and/or a carrier backing film adapted to apply a greater pressure in a first portion of the semiconductor topography than in a second portion of the semiconductor topography.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: September 7, 2004
    Assignee: Cypress Semiconductor Corp.
    Inventor: Ruediger Held
  • Patent number: 6780771
    Abstract: A method is provided for processing a semiconductor topography such that its upper surface is substantially planar, particularly including a region adjacent to an outer edge of a semiconductor topography. The method may include preferentially removing a portion of an upper layer of the topography in a region adjacent to an outer edge of the semiconductor topography. The region may extend greater than approximately 3 mm inward from the outer edge of the semiconductor topography. The method may also include polishing the semiconductor topography such that the upper surface of the semiconductor topography is substantially planar. Therefore, although a rate of polishing adjacent to an outer edge of the semiconductor topography may be slower than a rate of polishing adjacent to a center of the semiconductor topography, a thickness variation of the polished upper layer across the entirety of the semiconductor topography may be less than approximately 500 angstroms.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: August 24, 2004
    Assignee: Cypress Semiconductor Corp.
    Inventors: Venuka K. Jayatilaka, Matthew D. Buchanan, Ruediger Held
  • Patent number: 6761619
    Abstract: A method is provided for processing a semiconductor topography. In an embodiment, the method includes positioning a semiconductor topography against a carrier plate with a raised section. Such a method preferably allows a larger area capable of producing a target yield of semiconductor devices within dimensional specifications to be obtained than is obtained by positioning the topography against a carrier plate with a flat surface. As such, positioning a topography against a carrier plate with one or more raised sections may form a substantially planar upper surface in a larger area than in an area formed by positioning such a topography against a flat surface carrier plate. Furthermore, such a method is preferably conducted in a single polishing step. As such, a polishing system is provided which includes a carrier plate with a raised section adapted to planarize a semiconductor topography in one polishing step.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: July 13, 2004
    Assignee: Cypress Semiconductor Corp.
    Inventor: Ruediger Held
  • Patent number: 6509270
    Abstract: A method is provided for processing a semiconductor topography. In particular a method is provided in which a greater pressure may be applied to a first portion of a semiconductor topography than in a second portion of the topography. As such, a method is provided in which a portion of an upper layer in a region adjacent to an outer edge of the semiconductor topography is polished at a faster rate than a portion of the upper layer in a region comprising the center of the topography. Consequently, the method may subsequently provide a manner in which a substantially planar upper surface may be formed across a semiconductor topography including a region adjacent to an outer edge of the semiconductor topography. Alternatively, regions of an upper layer of a semiconductor topography polished at a faster rate than other regions may occur at various locations across the topography.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: January 21, 2003
    Assignee: Cypress Semiconductor Corp.
    Inventor: Ruediger Held