Patents by Inventor Steven L. Hamren
Steven L. Hamren 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).
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Patent number: 7456504Abstract: Improved methods and apparatus are provided for the handling and testing of semiconductor devices. One embodiment comprises a die carrier for one or more semiconductor dice having very fine pitch electrical I/O (input/output) elements. The semiconductor dice are temporarily attached to the die carrier in singulated form to enable testing the dice with conventional contact technology. The die carrier may include a flex circuit base substrate and a rigid support frame. Further embodiments comprise materials and methods for attaching the semiconductor dice to the die carrier and for providing a temporary electrical connection with the semiconductor dice during testing. Exemplary materials for providing the temporary electrical connection may comprise a conductive film or tape, a conductive or conductor-filled epoxy, resin or RTV adhesive-based materials, a water-soluble material impregnated with a conductive filler or non-reflowed solder paste.Type: GrantFiled: November 13, 2006Date of Patent: November 25, 2008Assignee: Micron Technology, Inc.Inventors: Steven L. Hamren, Daniel P. Cram
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Patent number: 7135345Abstract: Improved methods and apparatus are provided for the handling and testing of semiconductor devices. One embodiment comprises a die carrier for one or more semiconductor dice having very fine pitch electrical I/O (input/output) elements. The semiconductor dice are temporarily attached to the die carrier in singulated form to enable testing the dice with conventional contact technology. The die carrier may include a flex circuit base substrate and a rigid support frame. Further embodiments comprise materials and methods for attaching the semiconductor dice to the die carrier and for providing a temporary electrical connection with the semiconductor dice during testing. Exemplary materials for providing the temporary electrical connection may comprise a conductive film or tape, a conductive or conductor-filled epoxy, resin or RTV adhesive-based materials, a water-soluble material impregnated with a conductive filler or non-reflowed solder paste.Type: GrantFiled: August 16, 2004Date of Patent: November 14, 2006Assignee: Micron Technology, Inc.Inventors: Steven L. Hamren, Daniel P. Cram
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Patent number: 7129721Abstract: Improved methods and apparatus are provided for the handling and testing of semiconductor devices. One embodiment comprises a die carrier for one or more semiconductor dice having very fine pitch electrical I/O (input/output) elements. The semiconductor dice are temporarily attached to the die carrier in singulated form to enable testing the dice with conventional contact technology. The die carrier may include a flex circuit base substrate and a rigid support frame. Further embodiments comprise materials and methods for attaching the semiconductor dice to the die carrier and for providing a temporary electrical connection with the semiconductor dice during testing. Exemplary materials for providing the temporary electrical connection may comprise a conductive film or tape, a conductive or conductor-filled epoxy, resin or RTV adhesive-based materials, a water-soluble material impregnated with a conductive filler or non-reflowed solder paste.Type: GrantFiled: August 16, 2004Date of Patent: October 31, 2006Inventors: Steven L. Hamren, Daniel P. Cram
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Patent number: 7126228Abstract: Improved methods and apparatus are provided for the handling and testing of semiconductor devices. One embodiment comprises a die carrier for one or more semiconductor dice having very fine pitch electrical I/O (input/output) elements. The semiconductor dice are temporarily attached to the die carrier in singulated form to enable testing the dice with conventional contact technology. The die carrier may include a flex circuit base substrate and a rigid support frame. Further embodiments comprise materials and methods for attaching the semiconductor dice to the die carrier and for providing a temporary electrical connection with the semiconductor dice during testing. Exemplary materials for providing the temporary electrical connection may comprise a conductive film or tape, a conductive or conductor-filled epoxy, resin or RTV adhesive-based materials, a water-soluble material impregnated with a conductive filler or non-reflowed solder paste.Type: GrantFiled: April 23, 2003Date of Patent: October 24, 2006Assignee: Micron Technology, Inc.Inventors: Steven L. Hamren, Daniel P. Cram
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Patent number: 7122389Abstract: Improved methods and apparatus are provided for the handling and testing of semiconductor devices. One embodiment comprises a die carrier for one or more semiconductor dice having very fine pitch electrical I/O (input/output) elements. The semiconductor dice are temporarily attached to the die carrier in singulated form to enable testing the dice with conventional contact technology. The die carrier may include a flex circuit base substrate and a rigid support frame. Further embodiments comprise materials and methods for attaching the semiconductor dice to the die carrier and for providing a temporary electrical connection with the semiconductor dice during testing. Exemplary materials for providing the temporary electrical connection may comprise a conductive film or tape, a conductive or conductor-filled epoxy, resin or RTV adhesive-based materials, a water-soluble material impregnated with a conductive filler or non-reflowed solder paste.Type: GrantFiled: August 16, 2004Date of Patent: October 17, 2006Assignee: Micron Technology, Inc.Inventors: Steven L. Hamren, Daniel P. Cram
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Publication number: 20040212389Abstract: Improved methods and apparatus are provided for the handling and testing of semiconductor devices. One embodiment comprises a die carrier for one or more semiconductor dice having very fine pitch electrical I/O (input/output) elements. The semiconductor dice are temporarily attached to the die carrier in singulated form to enable testing the dice with conventional contact technology. The die carrier may include a flex circuit base substrate and a rigid support frame. Further embodiments comprise materials and methods for attaching the semiconductor dice to the die carrier and for providing a temporary electrical connection with the semiconductor dice during testing. Exemplary materials for providing the temporary electrical connection may comprise a conductive film or tape, a conductive or conductor-filled epoxy, resin or RTV adhesive-based materials, a water-soluble material impregnated with a conductive filler or non-reflowed solder paste.Type: ApplicationFiled: April 23, 2003Publication date: October 28, 2004Inventors: Steven L. Hamren, Daniel P. Cram
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Patent number: 6579399Abstract: A carrier for semiconductor components, and a method and system for handling semiconductor components using the carrier, are provided. The carrier includes a frame having component mounting sites that include adhesive members for retaining the components on the carrier. The adhesive members can include one or more pieces of polymer tape having low tack adhesive surfaces for retaining the components, and high tack adhesive surfaces for bonding to the carrier. The low tack adhesive surfaces are formulated to provide adhesive forces sufficient to retain the components on the component mounting sites, but low enough to allow a conventional pick and place vacuum tool to remove the components from the carrier. The adhesive forces on the components are determined by a contact area between the components and low tack adhesive surfaces, and by adhesive qualities of the low tack adhesive surfaces.Type: GrantFiled: April 26, 2000Date of Patent: June 17, 2003Inventor: Steven L. Hamren
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Patent number: 6543512Abstract: A carrier for semiconductor components, and a method and system for handling semiconductor components using the carrier, are provided. The carrier includes a frame having component mounting sites that include adhesive members for retaining the components on the carrier. The adhesive members can include one or more pieces of polymer tape having low tack adhesive surfaces for retaining the components, and high tack adhesive surfaces for bonding to the carrier. The low tack adhesive surfaces are formulated to provide adhesive forces sufficient to retain the components on the component mounting sites, but low enough to allow a conventional pick and place vacuum tool to remove the components from the carrier. The adhesive forces on the components are determined by a contact area between the components and low tack adhesive surfaces, and by adhesive qualities of the low tack adhesive surfaces.Type: GrantFiled: October 28, 1998Date of Patent: April 8, 2003Assignee: Micron Technology, Inc.Inventor: Steven L. Hamren
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Patent number: 6504390Abstract: The present invention is directed toward conductive bump array contactors having an ejector and methods for testing bumped devices using such apparatus. In one aspect of the invention, an apparatus includes a base having a plurality of contact elements projecting therefrom, an ejector coupled to the base and moveable with respect to the base between a first position proximate the base and a second position spaced apart from the base, and an actuating device coupled to the base and to the ejector that asserts a force on the ejector. The biasing force is sufficient to overcome a sticking or attractive force that may develop between the conductive bumps and the contact elements. In one embodiment, the contact elements project into a single opening defined by the ejector. Alternately, the ejector includes a plurality of apertures, each contact element at least partially projecting into one of the apertures.Type: GrantFiled: August 2, 2001Date of Patent: January 7, 2003Assignee: Micron Technology, Inc.Inventor: Steven L. Hamren
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Patent number: 6504391Abstract: The present invention is directed toward conductive bump array contactors having an ejector and methods for testing bumped devices using such apparatus. In one aspect of the invention, an apparatus includes a base having a plurality of contact elements projecting therefrom, an ejector coupled to the base and moveable with respect to the base between a first position proximate the base and a second position spaced apart from the base, and an actuating device coupled to the base and to the ejector that asserts a force on the ejector. The biasing force is sufficient to overcome a sticking or attractive force that may develop between the conductive bumps and the contact elements. In one embodiment, the contact elements project into a single opening defined by the ejector. Alternately, the ejector includes a plurality of apertures, each contact element at least partially projecting into one of the apertures.Type: GrantFiled: August 6, 2001Date of Patent: January 7, 2003Assignee: Micron Technology, Inc.Inventor: Steven L. Hamren
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Patent number: 6492826Abstract: The present invention is directed toward conductive bump array contactors having an ejector and methods for testing bumped devices using such apparatus. In one aspect of the invention, an apparatus includes a base having a plurality of contact elements projecting therefrom, an ejector coupled to the base and moveable with respect to the base between a first position proximate the base and a second position spaced apart from the base, and an actuating device coupled to the base and to the ejector that asserts a force on the ejector. The biasing force is sufficient to overcome a sticking or attractive force that may develop between the conductive bumps and the contact elements. In one embodiment, the contact elements project into a single opening defined by the ejector. Alternately, the ejector includes a plurality of apertures, each contact element at least partially projecting into one of the apertures.Type: GrantFiled: July 24, 2001Date of Patent: December 10, 2002Assignee: Micron Technology, Inc.Inventor: Steven L. Hamren
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Patent number: 6490188Abstract: Disclosed are semiconductor devices having terminal arrangements in which mirrored pairs of the semiconductor devices can be tested by a common test device.Type: GrantFiled: September 4, 2001Date of Patent: December 3, 2002Assignee: Micron Technology, Inc.Inventors: James P. Nuxoll, Steven L. Hamren
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Patent number: 6483332Abstract: The present invention is directed toward conductive bump array contactors having an ejector and methods for testing bumped devices using such apparatus. In one aspect of the invention, an apparatus includes a base having a plurality of buckle beam probes projecting therefrom, an ejector including a magnet coupled to the base and moveable with respect to the base between a first position proximate the base and a second position spaced apart from the base, and an actuating device coupled to the base and to the ejector that asserts a force on the ejector. The biasing force is sufficient to overcome a sticking or attractive force that may develop between the conductive bumps and the buckle beam probes. In one embodiment, the buckle beam probes project into a single opening defined by the ejector. Alternately, the ejector includes a plurality of apertures, each buckle beam probe at least partially projecting into one of the apertures.Type: GrantFiled: August 6, 2001Date of Patent: November 19, 2002Assignee: Micron Technology, Inc.Inventor: Steven L. Hamren
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Patent number: 6459289Abstract: The present invention is directed toward conductive bump array contactors having an ejector and methods for testing bumped devices using such apparatus. In one aspect of the invention, an apparatus includes a base having a plurality of spring probes projecting therefrom, an ejector including a coil spring coupled to the base and moveable with respect to the base between a first position proximate the base and a second position spaced apart from the base, wherein the ejector comprises a partially electrically-conductive material that inhibits the formation of an electro-static charge, and an actuating device coupled to the base and to the ejector that asserts force on the ejector. The biasing force is sufficient to overcome a sticking or attractive force that may develop between the conductive bumps and the spring probes. In one embodiment, the spring probes project into a single opening defined by the ejector.Type: GrantFiled: August 6, 2001Date of Patent: October 1, 2002Assignee: Micron Technology, Inc.Inventor: Steven L. Hamren
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Patent number: 6459288Abstract: The present invention is directed toward conductive bump array contactors having an ejector and methods for testing bumped devices using such apparatus. In one aspect of the invention, an apparatus includes a base having a plurality of contact elements projecting therefrom, an ejector coupled to the base and moveable with respect to the base between a first position proximate the base and a second position spaced apart from the base, and an actuating device coupled to the base and to the ejector that asserts a force on the ejector. The biasing force is sufficient to overcome a sticking or attractive force that may develop between the conductive bumps and the contact elements. In one embodiment, the contact elements project into a single opening defined by the ejector. Alternately, the ejector includes a plurality of apertures, each contact element at least partially projecting into one of the apertures.Type: GrantFiled: August 6, 2001Date of Patent: October 1, 2002Assignee: Micron Technology, Inc.Inventor: Steven L. Hamren
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Patent number: 6442056Abstract: Disclosed are semiconductor devices having terminal arrangements in which mirrored pairs of the semiconductor devices can be tested by a common test device.Type: GrantFiled: April 30, 2001Date of Patent: August 27, 2002Assignee: Micron Technology, Inc.Inventors: James P. Nuxoll, Steven L. Hamren
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Patent number: 6388459Abstract: The present invention is directed toward conductive bump array contactors having an ejector and methods for testing bumped devices using such apparatus. In one aspect of the invention, an apparatus includes a base having a plurality of contact elements projecting therefrom, an ejector coupled to the base and moveable with respect to the base between a first position proximate the base and a second position spaced apart from the base, and an actuating device coupled to the base and to the ejector that asserts a force on the ejector. The biasing force is sufficient to overcome a sticking or attractive force that may develop between the conductive bumps and the contact elements. In one embodiment, the contact elements project into a single opening defined by the ejector. Alternately, the ejector includes a plurality of apertures, each contact element at least partially projecting into one of the apertures.Type: GrantFiled: May 24, 2001Date of Patent: May 14, 2002Assignee: Micron Technology, Inc.Inventor: Steven L. Hamren
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Publication number: 20020044476Abstract: Disclosed are semiconductor devices having terminal arrangements in which mirrored pairs of the semiconductor devices can be tested by a common test device.Type: ApplicationFiled: September 4, 2001Publication date: April 18, 2002Inventors: James P. Nuxoll, Steven L. Hamren
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Patent number: 6362639Abstract: A compliant contactor interfaces a semiconductor device under test with a tester. The compliant contactor accepts a variety of different sized semiconductor devices along with a variety of different pinouts of the semiconductor devices. The compliant contactor includes an upper alignment block and a lower alignment block which receives the contact pins of the tester. The upper alignment block may move within a predefined distance with respect to the lower alignment block to account for any tester movement, thermal expansion or contraction, or other factors. In an alternative embodiment, the compliant contactor may move in three directions with respect to the test board. In this embodiment, a contact pad provides electrical connection between a daughter card and the test board. The contact pad may be a compressible elastomeric connector.Type: GrantFiled: June 8, 2001Date of Patent: March 26, 2002Assignee: Micron Technology, Inc.Inventors: Justin L. Lawrence, Steven L. Hamren
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Publication number: 20020011860Abstract: The present invention is directed toward conductive bump array contactors having an ejector and methods for testing bumped devices using such apparatus. In one aspect of the invention, an apparatus includes a base having a plurality of contact elements projecting therefrom, an ejector coupled to the base and moveable with respect to the base between a first position proximate the base and a second position spaced apart from the base, and an actuating device coupled to the base and to the ejector that asserts a force on the ejector. The biasing force is sufficient to overcome a sticking or attractive force that may develop between the conductive bumps and the contact elements. In one embodiment, the contact elements project into a single opening defined by the ejector. Alternately, the ejector includes a plurality of apertures, each contact element at least partially projecting into one of the apertures.Type: ApplicationFiled: August 6, 2001Publication date: January 31, 2002Inventor: Steven L. Hamren