Patents by Inventor William R. Stephenson

William R. Stephenson 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: 20220157624
    Abstract: Semiconductor die assemblies having high efficiency thermal paths and molded underfill material. In one embodiment, a semiconductor die assembly comprises a first die and a plurality of second dies. The first die has a first functionality, a lateral region, and a stacking site. The second dies have a different functionality than the first die, and the second dies are in a die stack including a bottom second die mounted to the stacking site of the first die and a top second die defining a top surface of the die stack. A thermal transfer structure is attached to at least the lateral region of the first die and has a cavity in which the second dies are positioned. An underfill material is in the cavity between the second dies and the thermal transfer structure, and the underfill material covers the top surface of the die stack.
    Type: Application
    Filed: January 28, 2022
    Publication date: May 19, 2022
    Inventors: David R. Hembree, William R. Stephenson
  • Patent number: 11239095
    Abstract: Semiconductor die assemblies having high efficiency thermal paths and molded underfill material. In one embodiment, a semiconductor die assembly comprises a first die and a plurality of second dies. The first die has a first functionality, a lateral region, and a stacking site. The second dies have a different functionality than the first die, and the second dies are in a die stack including a bottom second die mounted to the stacking site of the first die and a top second die defining a top surface of the die stack. A thermal transfer structure is attached to at least the lateral region of the first die and has a cavity in which the second dies are positioned. An underfill material is in the cavity between the second dies and the thermal transfer structure, and the underfill material covers the top surface of the die stack.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: February 1, 2022
    Assignee: Micron Technology, Inc.
    Inventors: David R. Hembree, William R. Stephenson
  • Publication number: 20200020547
    Abstract: Semiconductor die assemblies having high efficiency thermal paths and molded underfill material. In one embodiment, a semiconductor die assembly comprises a first die and a plurality of second dies. The first die has a first functionality, a lateral region, and a stacking site. The second dies have a different functionality than the first die, and the second dies are in a die stack including a bottom second die mounted to the stacking site of the first die and a top second die defining a top surface of the die stack. A thermal transfer structure is attached to at least the lateral region of the first die and has a cavity in which the second dies are positioned. An underfill material is in the cavity between the second dies and the thermal transfer structure, and the underfill material covers the top surface of the die stack.
    Type: Application
    Filed: September 23, 2019
    Publication date: January 16, 2020
    Inventors: David R. Hembree, William R. Stephenson
  • Patent number: 10424495
    Abstract: Semiconductor die assemblies having high efficiency thermal paths and molded underfill material. In one embodiment, a semiconductor die assembly comprises a first die and a plurality of second dies. The first die has a first functionality, a lateral region, and a stacking site. The second dies have a different functionality than the first die, and the second dies are in a die stack including a bottom second die mounted to the stacking site of the first die and a top second die defining a top surface of the die stack. A thermal transfer structure is attached to at least the lateral region of the first die and has a cavity in which the second dies are positioned. An underfill material is in the cavity between the second dies and the thermal transfer structure, and the underfill material covers the top surface of the die stack.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: September 24, 2019
    Assignee: Micron Technology, Inc.
    Inventors: David R. Hembree, William R. Stephenson
  • Publication number: 20180294169
    Abstract: Semiconductor die assemblies having high efficiency thermal paths and molded underfill material. In one embodiment, a semiconductor die assembly comprises a first die and a plurality of second dies. The first die has a first functionality, a lateral region, and a stacking site. The second dies have a different functionality than the first die, and the second dies are in a die stack including a bottom second die mounted to the stacking site of the first die and a top second die defining a top surface of the die stack. A thermal transfer structure is attached to at least the lateral region of the first die and has a cavity in which the second dies are positioned. An underfill material is in the cavity between the second dies and the thermal transfer structure, and the underfill material covers the top surface of the die stack.
    Type: Application
    Filed: June 7, 2018
    Publication date: October 11, 2018
    Inventors: David R. Hembree, William R. Stephenson
  • Patent number: 10083937
    Abstract: Semiconductor device packages include first and second semiconductor dice in a facing relationship. At least one group of solder bumps is substantially along a centerline between the semiconductor dice and operably coupled with integrated circuitry of the first and second semiconductor dice. Another group of solder bumps is laterally offset from the centerline and operably coupled only with integrated circuitry of the first semiconductor die. A further group of solder bumps is laterally offset from the centerline and operably coupled only with integrated circuitry of the second semiconductor die. Methods of forming semiconductor device packages include aligning first and second semiconductor dice with active surfaces facing each other, the first and second semiconductor dice each including bond pads along a centerline thereof and additional bond pads laterally offset from the centerline thereof.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: September 25, 2018
    Assignee: Micron Technology, Inc.
    Inventors: Anthony D. Veches, William R. Stephenson, Walter L. Moden
  • Patent number: 10008395
    Abstract: Semiconductor die assemblies having high efficiency thermal paths and molded underfill material. In one embodiment, a semiconductor die assembly comprises a first die and a plurality of second dies. The first die has a first functionality, a lateral region, and a stacking site. The second dies have a different functionality than the first die, and the second dies are in a die stack including a bottom second die mounted to the stacking site of the first die and a top second die defining a top surface of the die stack. A thermal transfer structure is attached to at least the lateral region of the first die and has a cavity in which the second dies are positioned. An underfill material is in the cavity between the second dies and the thermal transfer structure, and the underfill material covers the top surface of the die stack.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: June 26, 2018
    Assignee: Micron Technology, Inc.
    Inventors: David R. Hembree, William R. Stephenson
  • Publication number: 20180108592
    Abstract: Semiconductor die assemblies having high efficiency thermal paths and molded underfill material. In one embodiment, a semiconductor die assembly comprises a first die and a plurality of second dies. The first die has a first functionality, a lateral region, and a stacking site. The second dies have a different functionality than the first die, and the second dies are in a die stack including a bottom second die mounted to the stacking site of the first die and a top second die defining a top surface of the die stack. A thermal transfer structure is attached to at least the lateral region of the first die and has a cavity in which the second dies are positioned. An underfill material is in the cavity between the second dies and the thermal transfer structure, and the underfill material covers the top surface of the die stack.
    Type: Application
    Filed: October 19, 2016
    Publication date: April 19, 2018
    Inventors: David R. Hembree, William R. Stephenson
  • Publication number: 20170069603
    Abstract: Semiconductor device packages include first and second semiconductor dice in a facing relationship. At least one group of solder bumps is substantially along a centerline between the semiconductor dice and operably coupled with integrated circuitry of the first and second semiconductor dice. Another group of solder bumps is laterally offset from the centerline and operably coupled only with integrated circuitry of the first semiconductor die. A further group of solder bumps is laterally offset from the centerline and operably coupled only with integrated circuitry of the second semiconductor die. Methods of forming semiconductor device packages include aligning first and second semiconductor dice with active surfaces facing each other, the first and second semiconductor dice each including bond pads along a centerline thereof and additional bond pads laterally offset from the centerline thereof.
    Type: Application
    Filed: November 17, 2016
    Publication date: March 9, 2017
    Applicant: Micron Technology, Inc.
    Inventors: Anthony D. Veches, William R. Stephenson, Walter L. Moden
  • Patent number: 9502369
    Abstract: Semiconductor device packages include first and second semiconductor dice in a facing relationship. At least one group of solder bumps is substantially along a centerline between the semiconductor dice and operably coupled with integrated circuitry of the first and second semiconductor dice. Another group of solder bumps is laterally offset from the centerline and operably coupled only with integrated circuitry of the first semiconductor die. A further group of solder bumps is laterally offset from the centerline and operably coupled only with integrated circuitry of the second semiconductor die. Methods of forming semiconductor device packages include aligning first and second semiconductor dice with active surfaces facing each other, the first and second semiconductor dice each including bond pads along a centerline thereof and additional bond pads laterally offset from the centerline thereof.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: November 22, 2016
    Assignee: Micron Technology, Inc.
    Inventors: Anthony D. Veches, William R. Stephenson, Walter L. Moden
  • Publication number: 20160225734
    Abstract: Semiconductor device packages include first and second semiconductor dice in a facing relationship. At least one group of solder bumps is substantially along a centerline between the semiconductor dice and operably coupled with integrated circuitry of the first and second semiconductor dice. Another group of solder bumps is laterally offset from the centerline and operably coupled only with integrated circuitry of the first semiconductor die. A further group of solder bumps is laterally offset from the centerline and operably coupled only with integrated circuitry of the second semiconductor die. Methods of forming semiconductor device packages include aligning first and second semiconductor dice with active surfaces facing each other, the first and second semiconductor dice each including bond pads along a centerline thereof and additional bond pads laterally offset from the centerline thereof.
    Type: Application
    Filed: February 4, 2015
    Publication date: August 4, 2016
    Inventors: Anthony D. Veches, William R. Stephenson, Walter L. Moden
  • Patent number: 6916683
    Abstract: A method and apparatus for encapsulating a BGA package. Specifically, a BGA package is encapsulated after the balls are attached to the package. The backside of the package having the balls disposed thereon may be completely covered by the encapsulant. The encapsulant is disposed in direct contact about a portion of the balls. A liner is provided to facilitate the formation of an unencapsulated portion of each ball. The unencapsulated portion may be used to couple the package to a system.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: July 12, 2005
    Assignee: Micron Technology, Inc.
    Inventors: William R. Stephenson, Bret K. Street, Todd O. Bolken
  • Patent number: 6503781
    Abstract: A method and apparatus for encapsulating a BGA package. Specifically, the molded packaging material is configured to provide cups on the backside of the package, opposite the semiconductor device. The cups expose pads on the substrate and are configured to receive solder balls.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: January 7, 2003
    Assignee: Micron Technology, Inc.
    Inventors: William R. Stephenson, Bret K. Street, Todd O. Bolken
  • Publication number: 20020195708
    Abstract: A method and apparatus for encapsulating a BGA package. Specifically, a BGA package is encapsulated after the balls are attached to the package. The backside of the package having the balls disposed thereon may be completely covered by the encapsulant. The encapsulant is disposed in direct contact about a portion of the balls. A liner is provided to facilitate the formation of an unencapsulated portion of each ball. The unencapsulated portion may be used to couple the package to a system.
    Type: Application
    Filed: August 29, 2002
    Publication date: December 26, 2002
    Inventors: William R. Stephenson, Bret K. Street, Todd O. Bolken
  • Publication number: 20020121695
    Abstract: A method and apparatus for encapsulating a BGA package. Specifically, the molded packaging material is configured to provide cups on the backside of the package, opposite the semiconductor device. The cups expose pads on the substrate and are configured to receive solder balls.
    Type: Application
    Filed: April 11, 2002
    Publication date: September 5, 2002
    Inventors: William R. Stephenson, Bret K. Street, Todd O. Bolken
  • Patent number: 6400574
    Abstract: A method and apparatus for encapsulating a BGA package. Specifically, the molded packaging material is configured to provide cups on the backside of the package, opposite the semiconductor device. The cups expose pads on the substrate and are configured to receive solder balls.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: June 4, 2002
    Assignee: Micron Technology, Inc.
    Inventors: William R. Stephenson, Bret K. Street, Todd O. Bolken
  • Publication number: 20010046724
    Abstract: A method and apparatus for encapsulating a BGA package. Specifically, the molded packaging material is configured to provide cups on the backside of the package, opposite the semiconductor device. The cups expose pads on the substrate and are configured to receive solder balls.
    Type: Application
    Filed: August 6, 2001
    Publication date: November 29, 2001
    Inventors: William R. Stephenson, Bret K. Street, Todd O. Bolken
  • Patent number: 4909233
    Abstract: An adjustable threaded nock set (10) having a pair of serving nuts (11) and (12) having longitudinal bores therethrough. Each bore is threaded to engage monofilament serving (5) of bow string (4). Nuts (11) and (12) are installed onto serving (5) and tightened together at the proper location in a lock nut arrangement.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: March 20, 1990
    Inventor: William R. Stephenson
  • Patent number: 4776958
    Abstract: A diatomaceous earth caking filter element includes a first elongated tubular manifold having a slot therein and a suction coupling formed thereon for drawing a liquid from said first manifold. A second elongated tubular manifold has a slot therein and a plurality of hollow pipes connected between the first and second manifolds with one end of each pipe extending into the first manifold through the slot therein and the other end of each pipe extending into the second manifold through the slot therein. Each pipe is held by the slot edges of each manifold extending into an annular groove on each end of each pipe. A filter cake screen covers both sides of the plurality of hollow pipes for catching a filtering medium, such as diatomaceous earth, thereon for filtering liquid passing therethrough, so the liquid can be drawn through the filter medium and filter screen into the first and second manifolds and out the suction coupling.
    Type: Grant
    Filed: March 23, 1987
    Date of Patent: October 11, 1988
    Inventor: William R. Stephenson