Patents by Inventor Clarence J. Tracy
Clarence J. Tracy 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: 9627558Abstract: Methods and apparatuses for manufacturing self-aligned integrated back contact heterojunction solar cells are provided. In some embodiments, systems for forming a solar cell on a substrate are provided, the systems comprising: a master shadow mask positioned adjacent to the substrate on a first side of the master shadow mask; a first blocking mask placed adjacent to a second side of the master shadow mask; and a deposition machine that deposits material on the substrate through holes in the master shadow mask and the first blocking mask.Type: GrantFiled: April 9, 2015Date of Patent: April 18, 2017Assignee: Arizona Board of Regents on behalf of Arizona State UniversityInventors: Clarence J. Tracy, Stanislau Herasimenka
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Publication number: 20150295125Abstract: Methods and apparatuses for manufacturing self-aligned integrated back contact heterojunction solar cells are provided. In some embodiments, systems for forming a solar cell on a substrate are provided, the systems comprising: a master shadow mask positioned adjacent to the substrate on a first side of the master shadow mask; a first blocking mask placed adjacent to a second side of the master shadow mask; and a deposition machine that deposits material on the substrate through holes in the master shadow mask and the first blocking mask.Type: ApplicationFiled: April 9, 2015Publication date: October 15, 2015Inventors: Clarence J. Tracy, Stanislau Herasimenka
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Patent number: 7736996Abstract: A method for damage avoidance in transferring a monocrystalline, thin layer from a first substrate onto a second substrate involves epitaxial growth of a sandwich structure with a strained epitaxial layer buried below a monocrystalline thin layer, and lift-off and transfer of the monocrystalline thin layer with the cleaving controlled to happen within the buried strained layer in conjunction with the introduction of hydrogen.Type: GrantFiled: October 31, 2006Date of Patent: June 15, 2010Assignee: Freescale Semiconductor, Inc.Inventors: Nirmal David Theodore, John L. Freeman, Jr., Clarence J. Tracy
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Patent number: 7476329Abstract: A method for contacting an electrically conductive layer overlying a magnetoelectronics element includes forming a memory element layer overlying a dielectric region. A first electrically conductive layer is deposited overlying the memory element layer. A first dielectric layer is deposited overlying the first electrically conductive layer and is patterned and etched to form a first masking layer. Using the first masking layer, the first electrically conductive layer is etched. A second dielectric layer is deposited overlying the first masking layer and the dielectric region. A portion of the second dielectric layer is removed to expose the first masking layer. The second dielectric layer and the first masking layer are subjected to an etching chemistry such that the first masking layer is etched at a faster rate than the second dielectric layer. The etching exposes the first electrically conductive layer.Type: GrantFiled: February 2, 2005Date of Patent: January 13, 2009Assignee: EverSpin Technologies, Inc.Inventors: Gregory W. Grynkewich, Brian R. Butcher, Mark A. Durlam, Kelly Kyler, Charles A. Synder, Kenneth H. Smith, Clarence J. Tracy, Richard Williams
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Patent number: 7241691Abstract: Methods for fabricating high work function p-MOS device metal electrodes are provided. In one embodiment, a method is provided for producing a metal electrode including the steps of: providing a high k dielectric stack with an exposed surface; contacting the exposed surface of the high k dielectric stack with a vapor of a metal oxide wherein the metal oxide is selected from the group consisting of RuOx, IrOx, ReOx, MoOx, WOx, VOx, and PdOx; and contacting the exposed surface of the dielectric stack with a vapor of an additive selected from the group consisting of SiO2, Al2O3, HfO2, ZrO2, MgO, SrO, BaO, Y2O3, La2O3, and TiO2, whereby contacting the exposed surface of the dielectric stack with the vapor of the metal oxide and the vapor of the additive forms an electrode and wherein the additive is present at an amount between about 1% to about 50% by atomic weight percent in the electrode.Type: GrantFiled: March 28, 2005Date of Patent: July 10, 2007Assignee: Freescale Semiconductor, Inc.Inventors: Yong Liang, Clarence J. Tracy
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Patent number: 7169622Abstract: Fabricating a magnetoresistive random access memory cell and a structure for a magnetoresistive random access memory cell begins by providing a substrate having a transistor formed therein. A contact element is formed electrically coupled to the transistor and a dielectric material is deposited within an area partially bounded by the contact element. A digit line is formed within the dielectric material, the digit line overlying a portion of the contact element. A conductive layer is formed overlying the digit line and in electrical communication with the contact element.Type: GrantFiled: August 5, 2004Date of Patent: January 30, 2007Assignee: Freescale Semiconductor, Inc.Inventors: Gregory W. Grynkewich, Brian R. Butcher, Mark A. Durlam, Clarence J. Tracy
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Patent number: 7042025Abstract: A method for contacting an electrically conductive electrode overlying a first dielectric material of a structure is provided. The method includes forming a mask layer overlying the electrically conductive electrode and patterning the mask layer to form an exposed electrically conductive electrode material. At least a portion of the exposed electrically conductive electrode material is removed while an electrically conductive veil is formed adjacent the mask layer. A metal contact layer is formed such that said metal contact layer contacts the electrically conductive veil.Type: GrantFiled: August 19, 2004Date of Patent: May 9, 2006Assignee: Freescale Semiconductor, Inc.Inventors: Brian R. Butcher, Kenneth H. Smith, Clarence J. Tracy
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Patent number: 6911156Abstract: A method for fabricating a magnetic memory element structure comprises providing a dielectric layer having a conducting via. A first magnetic layer is formed overlying the dielectric layer and is in electrical communication with the conducting via. A non-magnetic layer and a second magnetic layer are formed overlying the first magnetic layer. A first conductive layer is deposited overlying the second magnetic layer and is patterned. A portion of the second magnetic layer is exposed and is transformed to form an inactive portion and an active portion. The active portion comprises a portion of a memory element and the inactive portion comprises an insulator. A sidewall spacer is formed about at least one sidewall of the first conductive layer and a masking tab is formed that overlies a portion of the memory element and extends to overlie at least a portion of the conducting via.Type: GrantFiled: April 16, 2003Date of Patent: June 28, 2005Assignee: Freescale Semiconductor, Inc.Inventors: Gregory W. Grynkewich, Brian R. Butcher, Mark A. Durlam, Kelly Kyler, Kenneth H. Smith, Clarence J. Tracy
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Patent number: 6890770Abstract: A method for fabricating an MRAM device structure includes providing a substrate on which is formed a first transistor and a second transistor. An operative memory element device is formed in electrical contact with the first transistor. At least a portion of a false memory element device is formed in electrical contact with the second transistor. A first dielectric layer is deposited overlying the at least a portion of a false memory element device and the operative memory element device. The first dielectric layer is etched to simultaneously form a first via to the at least a portion of a false memory element device and a second via to the operative memory element device. An electrically conductive interconnect layer is deposited so the electrically conductive interconnect layer extends from the at least a portion of a false memory element device to the operative memory element device.Type: GrantFiled: July 6, 2004Date of Patent: May 10, 2005Assignee: Freescale Semiconductor, Inc.Inventors: Gregory W. Grynkewich, Mark Deherrera, Mark A. Durlam, Clarence J. Tracy
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Patent number: 6881351Abstract: A method for contacting an electrically conductive layer overlying a magnetoelectronics element includes forming a memory element layer overlying a dielectric region. A first electrically conductive layer is deposited overlying the memory element layer. A first dielectric layer is deposited overlying the first electrically conductive layer and is patterned and etched to form a first masking layer. Using the first masking layer, the first electrically conductive layer is etched. A second dielectric layer is deposited overlying the first masking layer and the dielectric region. A portion of the second dielectric layer is removed to expose the first masking layer. The second dielectric layer and the first masking layer are subjected to an etching chemistry such that the first masking layer is etched at a faster rate than the second dielectric layer. The etching exposes the first electrically conductive layer.Type: GrantFiled: April 22, 2003Date of Patent: April 19, 2005Assignee: Freescale Semiconductor, Inc.Inventors: Gregory W. Grynkewich, Brian R. Butcher, Mark A. Durlam, Kelly Kyler, Charles A. Synder, Kenneth H. Smith, Clarence J. Tracy, Richard Williams
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Publication number: 20040257902Abstract: A method for fabricating an MRAM device structure includes providing a substrate on which is formed a first transistor and a second transistor. An operative memory element device is formed in electrical contact with the first transistor. At least a portion of a false memory element device is formed in electrical contact with the second transistor. A first dielectric layer is deposited overlying the at least a portion of a false memory element device and the operative memory element device. The first dielectric layer is etched to simultaneously form a first via to the at least a portion of a false memory element device and a second via to the operative memory element device. An electrically conductive interconnect layer is deposited so the electrically conductive interconnect layer extends from the at least a portion of a false memory element device to the operative memory element device.Type: ApplicationFiled: July 6, 2004Publication date: December 23, 2004Inventors: Gregory W. Grynkewich, Mark Deherrera, Mark A. Durlam, Clarence J. Tracy
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Publication number: 20040211749Abstract: A method for contacting an electrically conductive layer overlying a magnetoelectronics element includes forming a memory element layer overlying a dielectric region. A first electrically conductive layer is deposited overlying the memory element layer. A first dielectric layer is deposited overlying the first electrically conductive layer and is patterned and etched to form a first masking layer. Using the first masking layer, the first electrically conductive layer is etched. A second dielectric layer is deposited overlying the first masking layer and the dielectric region. A portion of the second dielectric layer is removed to expose the first masking layer. The second dielectric layer and the first masking layer are subjected to an etching chemistry such that the first masking layer is etched at a faster rate than the second dielectric layer. The etching exposes the first electrically conductive layer.Type: ApplicationFiled: April 22, 2003Publication date: October 28, 2004Inventors: Gregory W. Grynkewich, Brian R. Butcher, Mark A. Durlam, Kelly Kyler, Charles A. Synder, Kenneth H. Smith, Clarence J. Tracy, Richard Williams
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Publication number: 20040205958Abstract: A method for fabricating a magnetic memory element structure comprises providing a dielectric layer having a conducting via. A first magnetic layer is formed overlying the dielectric layer and is in electrical communication with the conducting via. A non-magnetic layer and a second magnetic layer are formed overlying the first magnetic layer. A first conductive layer is deposited overlying the second magnetic layer and is patterned. A portion of the second magnetic layer is exposed and is transformed to form an inactive portion and an active portion. The active portion comprises a portion of a memory element and the inactive portion comprises an insulator. A sidewall spacer is formed about at least one sidewall of the first conductive layer and a masking tab is formed that overlies a portion of the memory element and extends to overlie at least a portion of the conducting via.Type: ApplicationFiled: April 16, 2003Publication date: October 21, 2004Inventors: Gregory W. Grynkewich, Brian R. Butcher, Mark A. Durlam, Kelly Kyler, Kenneth H. Smith, Clarence J. Tracy
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Patent number: 6806127Abstract: A method for contacting an electrically conductive electrode overlying a first dielectric material of a structure is provided. The method includes forming a mask layer overlying the electrically conductive electrode and patterning the mask layer to form an exposed electrically conductive electrode material. At least a portion of the exposed electrically conductive electrode material is removed while an electrically conductive veil is formed adjacent the mask layer. A metal contact layer is formed such that said metal contact layer contacts the electrically conductive veil.Type: GrantFiled: December 3, 2002Date of Patent: October 19, 2004Assignee: Freescale Semiconductor, Inc.Inventors: Brian R. Butcher, Kenneth H. Smith, Clarence J. Tracy
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Patent number: 6798004Abstract: Fabricating a magnetoresistive random access memory cell and a structure for a magnetoresistive random access memory cell begins by providing a substrate having a transistor formed therein. A contact element is formed electrically coupled to the transistor and a dielectric material is deposited within an area partially bounded by the contact element. A digit line is formed within the dielectric material, the digit line overlying a portion of the contact element. A conductive layer is formed overlying the digit line and in electrical communication with the contact element.Type: GrantFiled: April 22, 2003Date of Patent: September 28, 2004Assignee: Freescale Semiconductor, Inc.Inventors: Gregory W. Grynkewich, Brian R. Butcher, Mark A. Durlam, Clarence J. Tracy
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Patent number: 6784510Abstract: A method for fabricating an MRAM device structure includes providing a substrate on which is formed a first transistor and a second transistor. An operative memory element device is formed in electrical contact with the first transistor. At least a portion of a false memory element device is formed in electrical contact with the second transistor. A first dielectric layer is deposited overlying the at least a portion of a false memory element device and the operative memory element device. The first dielectric layer is etched to simultaneously form a first via to the at least a portion of a false memory element device and a second via to the operative memory element device. An electrically conductive interconnect layer is deposited so the electrically conductive interconnect layer extends from the at least a portion of a false memory element device to the operative memory element device.Type: GrantFiled: April 16, 2003Date of Patent: August 31, 2004Assignee: Freescale Semiconductor, Inc.Inventors: Gregory W. Grynkewich, Mark Deherrera, Mark A. Durlam, Clarence J. Tracy
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Publication number: 20040106245Abstract: A method for contacting an electrically conductive electrode overlying a first dielectric material of a structure is provided. The method includes forming a mask layer overlying the electrically conductive electrode and patterning the mask layer to form an exposed electrically conductive electrode material. At least a portion of the exposed electrically conductive electrode material is removed while an electrically conductive veil is formed adjacent the mask layer. A metal contact layer is formed such that said metal contact layer contacts the electrically conductive veil.Type: ApplicationFiled: December 3, 2002Publication date: June 3, 2004Inventors: Brian R. Butcher, Kenneth H. Smith, Clarence J. Tracy
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Patent number: 6518070Abstract: A process for forming a capacitor with a high-k dielectric or ferroelectric layer within a semiconductor device is used to reduce the likelihood of oxidation or materials interactions between that layer and an underlying layer. A first electrode layer includes atoms that form along grain boundaries within the first electrode layer to reduce the oxidation of a conductive plug or undesired materials interactions.Type: GrantFiled: May 17, 2000Date of Patent: February 11, 2003Assignee: Motorola, Inc.Inventors: Prasad V. Alluri, Mark Victor Raymond, Sucharita Madhukar, Roland R. Stumpf, Chun-Li Liu, Clarence J. Tracy
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Patent number: 5902690Abstract: A non-volatile magneto-resistive memory positioned on a semiconductor substrate is shielded from stray magnetic fields by a passivation layer partially or completely surrounding the non-volatile magneto-resistive memory. The passivation layer includes non-conductive ferrite materials, such as Mn--Zn-Ferrite, Ni--Zn-Ferrite, MnFeO, CuFeO, FeO, or NiFeO, for shielding the non-volatile magneto-resistive memory from stray magnetic fields. The non-conductive ferrite materials may also be in the form of a layer which focuses internally generated magnetic fields on the non-volatile magneto-resistive memory to reduce power requirements.Type: GrantFiled: February 25, 1997Date of Patent: May 11, 1999Assignee: Motorola, Inc.Inventors: Clarence J. Tracy, Eugene Chen, Mark Durlam, Theodore Zhu, Saied N. Tehrani
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Patent number: 5861328Abstract: A method of fabricating GMR devices on a CMOS substrate structure with a semiconductor device formed therein. The method includes forming a dielectric system with a planar surface having a roughness in a range of 1 .ANG. to 20 .ANG. RMS on the substrate; disposing and patterning films of giant magneto-resistive material on the planar surface so as to form a memory cell; disposing a dielectric cap on the cell so as to seal the cell and provide a barrier to subsequent operations; forming vias through the dielectric cap and the dielectric system to interconnects of the semiconductor device; forming vias through the dielectric cap to the magnetic memory cell; and depositing a metal system through the vias to the interconnects and to the memory cell.Type: GrantFiled: October 7, 1996Date of Patent: January 19, 1999Assignee: Motorola, Inc.Inventors: Saied N. Tehrani, Eugene Chen, Mark Durlam, Xiaodong T. Zhu, Clarence J. Tracy