Patents by Inventor Neil Leslie Robertson

Neil Leslie Robertson 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: 20140291283
    Abstract: A method for making a current-perpendicular-to-the-plane magnetoresistive sensor structure produces a top electrode that is “self-aligned” on the top of the sensor and with a width less than the sensor trackwidth. A pair of walls of ion-milling resistant material are fabricated to a predetermined height above the biasing layers at the sensor side edges. A layer of electrode material is then deposited onto the top of the sensor between the two walls. The walls serve as a mask during angled ion milling to remove outer portions of the electrode layer. The height of the walls and the angle of ion milling determines the width of the resulting top electrode. This leaves the reduced-width top electrode located on the sensor. Because of the directional ion milling using walls that are aligned with the sensor side edges, the reduced-width top electrode is self-aligned in the center of the sensor.
    Type: Application
    Filed: March 29, 2013
    Publication date: October 2, 2014
    Applicant: HGST Netherlands B.V.
    Inventors: Patrick Mesquita Braganca, Jeffrey R. Childress, Jordan Asher Katine, Yang Li, Neil Leslie Robertson, Neil Smith, Petrus Antonius VanDerHeijden, Douglas Johnson Werner
  • Patent number: 8631561
    Abstract: The present invention generally relates to fabricating a bond pad for electrically connecting a laser diode to a slider and a TAR head in a HDD. The bond pad is deposited on a surface of the head that is perpendicular to the air bearing surface (ABS). The head is diced and lapped to expose the bond pad on a top surface of the head and mounted on a slider. The laser diode and a sub-mount may be coupled to the top surface of the slider—i.e., the surface opposite the ABS—by connecting to the bond pads. Specifically, both the laser diode and the sub-mount have electrodes thereon that are perpendicular to the bond pads. Conductive bonding material is used to bond the laser diode and the sub-mount to the bond pads.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: January 21, 2014
    Assignee: HGST Netherlands B.V.
    Inventors: Christian René Bonhôte, Linden James Crawforth, Toshiki Hirano, Fu-Ying Huang, Neil Leslie Robertson, Barry Cushing Stipe
  • Patent number: 8634162
    Abstract: A magnetic write head for data recording having a magnetic write pole with a stepped magnetic shell structure that defines a secondary flare point. The secondary flare point defined by the magnetic shell portion can be more tightly controlled with respect to its distance from the air bearing surface (ABS) of the write head than can a traditional flare point that is photolithographically on the main pole structure. This allows the effective flare point of the write head to be moved much closer to the ABS than would otherwise be possible using currently available tooling and photolithography techniques. The write head may also include a magnetic trailing shield that wraps around the main pole portion. The trailing shield can have a hack edge defining a trailing shield throat height that is either between the secondary flare point or coincident or behind the secondary flare point, depending on design requirements.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: January 21, 2014
    Assignee: HGST Netherlands B.V.
    Inventors: Christian Rene Bonhote, Thomas Dudley Boone, Jr., Quang Le, Jui-Lung Li, Jeffrey S. Lille, Scott Arthur MacDonald, Neil Leslie Robertson, Xhavin Sinha, Petrus Antonius Van Der Heijden
  • Patent number: 8619535
    Abstract: An apparatus according to one embodiment includes a near field transducer comprising a conductive metal film; and an optical waveguide for illumination of the near field transducer, a light guiding core layer of the optical waveguide being spaced from the near field transducer by less than about 100 nanometers and greater than 0 nanometers, wherein a longitudinal axis of the optical waveguide is substantially perpendicular to an air bearing surface.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: December 31, 2013
    Assignee: HGST Netherlands B.V.
    Inventors: Hamid Balamane, Thomas Dudley Boone, Jr., Neil Leslie Robertson, Barry Cushing Stipe, Timothy Carl Strand
  • Publication number: 20130133182
    Abstract: The present invention generally relates to fabricating a bond pad for electrically connecting a laser diode to a slider and a TAR head in a HDD. The bond pad is deposited on a surface of the head that is perpendicular to the air bearing surface (ABS). The head is diced and lapped to expose the bond pad on a top surface of the head and mounted on a slider. The laser diode and a sub-mount may be coupled to the top surface of the slider—i.e., the surface opposite the ABS—by connecting to the bond pads. Specifically, both the laser diode and the sub-mount have electrodes thereon that are perpendicular to the bond pads. Conductive bonding material is used to bond the laser diode and the sub-mount to the bond pads.
    Type: Application
    Filed: November 30, 2011
    Publication date: May 30, 2013
    Inventors: Christian René Bonhôte, Linden James Crawforth, Toshiki Hirano, Fu-Ying Huang, Neil Leslie Robertson, Barry Cushing Stipe
  • Patent number: 8339739
    Abstract: A write head structure for use with thermally assisted recording is disclosed. Improved heat sinking is provided for removing thermal energy created by a ridge aperture near field light transducer. Metal films conduct heat away from the region near the ridge aperture to the high pressure air film at the ABS between the head and media. This heat is further dissipated by the media. The metal films have varying thickness to improve lateral conductivity and may be composed of Au combined with a harder metal such as Ru to improve wear characteristics at the ABS.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: December 25, 2012
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Hamid Balamane, Jordan Asher Katine, Neil Leslie Robertson, Barry Cushing Stipe
  • Publication number: 20120218871
    Abstract: An apparatus according to one embodiment includes a near field transducer comprising a conductive metal film; and an optical waveguide for illumination of the near field transducer, a light guiding core layer of the optical waveguide being spaced from the near field transducer by less than about 100 nanometers and greater than 0 nanometers, wherein a longitudinal axis of the optical waveguide is substantially perpendicular to an air bearing surface.
    Type: Application
    Filed: April 3, 2012
    Publication date: August 30, 2012
    Inventors: Hamid Balamane, Thomas Dudley Boone, JR., Neil Leslie Robertson, Barry Cushing Stipe, Timothy Carl Strand
  • Patent number: 8169881
    Abstract: According to one embodiment, an apparatus includes a near field transducer comprising a conductive metal film having a main body and a ridge extending from the main body and an optical waveguide for illumination of the near field transducer, a light guiding core layer of the optical waveguide being spaced from the near field transducer by less than about 100 nanometers and greater than 0 nanometers. In another embodiment, a method includes forming a near field transducer structure and removing a portion of the near field transducer structure. The method also includes forming a cladding layer adjacent a remaining portion of the near field transducer structure, wherein a portion of the cladding layer extends along the remaining portion of the near field transducer structure and forming a core layer above the cladding layer. Other apparatuses and methods are also included in the invention.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: May 1, 2012
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Hamid Balamane, Thomas Dudley Boone, Jr., Neil Leslie Robertson, Barry Cushing Stipe, Timothy Carl Strand
  • Patent number: 8161627
    Abstract: A method in one embodiment includes forming an electric lapping guide layer; forming a write pole; forming a first gap layer over the write pole; masking a portion of the first gap layer for defining a window over the write pole and at least a portion of the electric lapping guide layer; and forming a bump over the write pole in the window. Additional methods and systems are presented.
    Type: Grant
    Filed: April 28, 2008
    Date of Patent: April 24, 2012
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Christian Rene Bonhote, Jeffrey S. Lille, Vladimir Nikitin, Aron Pentek, Neil Leslie Robertson
  • Publication number: 20120050906
    Abstract: A write head structure for use with thermally assisted recording is disclosed. Improved heat sinking is provided for removing thermal energy created by a ridge aperture near field light transducer. Metal films conduct heat away from the region near the ridge aperture to the high pressure air film at the ABS between the head and media. This heat is further dissipated by the media. The metal films have varying thickness to improve lateral conductivity and may be composed of Au combined with a harder metal such as Ru to improve wear characteristics at the ABS.
    Type: Application
    Filed: August 31, 2010
    Publication date: March 1, 2012
    Inventors: Hamid Balamane, Jordan Asher Katine, Neil Leslie Robertson, Barry Cushing Stipe
  • Patent number: 8070554
    Abstract: An apparatus and method for lapping and fabricating a read/write head is described. The lapping method includes performing a first lapping process on a structure having the read/write head fabricated therein. The first lapping process is for reducing a first resistive region. The first resistive region is located proximal to a surface of the structure. The first lapping process is for achieving a first lapping benchmark. The lapping method further includes performing a second lapping process on a second resistive region. The second lapping process laps at a rate lesser than the first lapping process. The second lapping process is for achieving a second lapping benchmark. The second resistive region is interposed between the first resistive region and the read/write head. The second resistive region has a different resistive value than the second resistive region.
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: December 6, 2011
    Assignee: Hitachi Global Storage Technologies, Netherland B.V.
    Inventors: Robert E. Fontana, Jr., Neil Leslie Robertson, Huey-Ming Tzeng
  • Publication number: 20100326819
    Abstract: A method for making a patterned-media magnetic recording disk uses nano-imprint lithography (NIL) for patterning a resist layer over the magnetic recording layer. A hard mask layer is located above the magnetic recording layer and an etch stop layer is located above the hard mask layer and below the resist layer. Residual resist material in the recesses of the patterned resist layer is removed by reactive ion etching (RIE) to expose the underlying etch stop layer. The etch stop material in the recesses is then removed by RIE to expose regions of the hard mask layer. A reactive ion milling (RIM) process removes the exposed hard mask material. The RIM process causes no undercutting of the unexposed hard mask material, which allows the very small critical dimensions of the patterned-media disk to be reliably achieved when ion milling is subsequently performed through the hard mask that has been patterned by the RIM process.
    Type: Application
    Filed: June 24, 2009
    Publication date: December 30, 2010
    Applicant: HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V.
    Inventors: Jeffrey S. Lille, Neil Leslie Robertson
  • Publication number: 20100165822
    Abstract: According to one embodiment, an apparatus includes a near field transducer comprising a conductive metal film having a main body and a ridge extending from the main body and an optical waveguide for illumination of the near field transducer, a light guiding core layer of the optical waveguide being spaced from the near field transducer by less than about 100 nanometers and greater than 0 nanometers. In another embodiment, a method includes forming a near field transducer structure and removing a portion of the near field transducer structure. The method also includes forming a cladding layer adjacent a remaining portion of the near field transducer structure, wherein a portion of the cladding layer extends along the remaining portion of the near field transducer structure and forming a core layer above the cladding layer. Other apparatuses and methods are also included in the invention.
    Type: Application
    Filed: December 31, 2008
    Publication date: July 1, 2010
    Inventors: Hamid Balamane, Thomas Dudley Boone, JR., Neil Leslie Robertson, Barry Cushing Stipe, Timothy Carl Strand
  • Patent number: 7743487
    Abstract: A perpendicular write head includes a beveled main pole having corners defining a track width and having a planarized surface and encapsulated on either side thereof and below by an alumina layer, the alumina layer having a polished surface and extending above the main pole on either side thereof as steps.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: June 29, 2010
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Amanda Baer, Hamid Balamane, Michael Feldbaum, Ming Jiang, Aron Pentek, Neil Leslie Robertson, Sue Siyang Zhang
  • Publication number: 20100126001
    Abstract: A method for self aligning a lapping guide with a structure of a write pole. A write pole is formed over a substrate and an electrically conductive material lapping guide material is deposited in a location that is removed from the write pole. A mask is then formed over a portion of the write pole and a portion of the electrically conductive material. A material removal process such as reactive ion etching can then be performed to remove a portion of the magnetic material that is not protected by the mask structure. An magnetic material is then electroplated over the write pole with the write pole, with the mask still in place. In this way, the electroplated material has an edge that is self aligned with an edge of the electrically conductive lapping guide material, both being defined by the same mask structure.
    Type: Application
    Filed: December 23, 2009
    Publication date: May 27, 2010
    Inventors: Christian Rene Bonhote, Thomas Budley Boone, JR., Quang Le, Jui-Lung Li, Jeffrey S. Lille, Scott Arthur MacDonald, Neil Leslie Robertson, Xhavin Sinha, Petrus Antonius Van Der Heijden
  • Publication number: 20100128392
    Abstract: A magnetic write head for data recording having a magnetic write pole with a stepped magnetic shell structure that defines a secondary flare point. The secondary flare point defined by the magnetic shell portion can be more tightly controlled with respect to its distance from the air bearing surface (ABS) of the write head than can a traditional flare point that is photolithographically on the main pole structure. This allows the effective flare point of the write head to be moved much closer to the ABS than would otherwise be possible using currently available tooling and photolithography techniques. The write head also includes a non-magnetic spacer layer formed over the magnetic shell structure and a trailing magnetic shield, a portion of which is formed over the non-magnetic spacer.
    Type: Application
    Filed: December 23, 2009
    Publication date: May 27, 2010
    Inventors: Christian Rene Bonhote, Thomas Dudley Boone, JR., Quang Le, Jui-Lung Li, Jeffrey S. Lille, Scott Arthur MacDonald, Neil Leslie Robertson, Xhavin Sinha, Petrus Antonius Van Der Heijden
  • Publication number: 20100091407
    Abstract: A magnetic write head for data recording having a magnetic write pole with a stepped magnetic shell structure that defines a secondary flare point. The secondary flare point defined by the magnetic shell portion can be more tightly controlled with respect to its distance from the air bearing surface (ABS) of the write head than can a traditional flare point that is photolithographically on the main pole structure. This allows the effective flare point of the write head to be moved much closer to the ABS than would otherwise be possible using currently available tooling and photolithography techniques. The write head also includes a non-magnetic spacer layer formed over the magnetic shell structure that is recessed from the ABS by a distance that is greater than that of the magnetic shell portion. A magnetic shield is formed over the magnetic shell and non-magnetic spacer.
    Type: Application
    Filed: December 23, 2009
    Publication date: April 15, 2010
    Inventors: Christian Rene Bonhote, Thomas Dudley Boone, JR., Quang Le, Jui-Lung Li, Jeffrey S. Lille, Scott Arthur MacDonald, Neil Leslie Robertson, Xhavin Sinha, Petrus Antonius Van Der Heijden
  • Publication number: 20090268348
    Abstract: A method in one embodiment includes forming an electric lapping guide layer; forming a write pole; forming a first gap layer over the write pole; masking a portion of the first gap layer for defining a window over the write pole and at least a portion of the electric lapping guide layer; and forming a bump over the write pole in the window. A system in one embodiment includes an electric lapping guide layer; a write pole positioned to one side of the electric lapping guide layer; and a bump formed over the write pole in a window, wherein a back end of the electric lapping guide layer and a front end of the bump are about a same distance from a lapped surface of a head. Additional methods and systems are presented.
    Type: Application
    Filed: April 28, 2008
    Publication date: October 29, 2009
    Inventors: Christian Rene Bonhote, Jeffrey S. Lille, Vladimir Nikitin, Aron Pentek, Neil Leslie Robertson
  • Patent number: 7603762
    Abstract: An optical lapping guide for determining an amount of lapping performed on a row of sliders in a process for manufacturing sliders for magnetic data recording. The optical lapping guide is constructed with a front edge that is at an angle with respect to an air bearing surface plane ABS plane, such that a portion of the lapping guides is in front of the ABS and portion of the lapping guide is behind the ABS. As lapping progresses, an increasing amount of the lapping guide will be exposed at the ABS and visible for inspection. Therefore, after a lapping process has been performed, the optical lapping guide can be inspected to determine the amount of material removed by lapping. The greater the amount of the lapping guide that is exposed and visible, the greater the amount of material removed by lapping.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: October 20, 2009
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Amanda Baer, Vladimir Nikitin, Aron Pentek, Neil Leslie Robertson
  • Publication number: 20090258186
    Abstract: A process for forming a plurality of sliders for use in thermally-assisted recording (TAR) disk drives includes a wafer-level process for forming a plurality of aperture structures, and optionally abutting optical channels, on a wafer surface prior to cutting the wafer into individual sliders. The wafer has a generally planar surface arranged into a plurality of rectangularly-shaped regions. In each rectangular region a first metal layer is deposited on the wafer surface, followed by a layer of radiation-transmissive aperture material, which is then lithographically patterned to define the width of the aperture, the aperture width being parallel to the length of the rectangularly-shaped region. A second metal layer is deposited over the patterned layer of aperture material. The resulting structure is then lithographically patterned to define an aperture structure comprising aperture material surrounded by metal and having parallel radiation entrance and exit faces orthogonal to the wafer surface.
    Type: Application
    Filed: April 10, 2008
    Publication date: October 15, 2009
    Applicant: HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B. V.
    Inventors: Robert E. Fontana, JR., Jordan Asher Katine, Neil Leslie Robertson, Barry Cushing Stipe, Timothy Carl Strand, Bruce David Terris