Patents by Inventor Alexander Barr
Alexander Barr 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: 11322465Abstract: A method may include forming a metal pattern in a metal layer of a fabricated integrated circuit device and under a target bump of the fabricated integrated circuit device, wherein the metal pattern has an inner shape and an outer field such that a void space in the metal layer is created between the inner shape and the outer field and approximately centering the void space on an outline of an under-bump metal formed under the target bump with a keepout distance from the inner shape and the outer field on either side of the outline such that the metal minimizes local variations in mechanical stress on underlying structures within the fabricated integrated circuit device.Type: GrantFiled: June 9, 2020Date of Patent: May 3, 2022Assignee: Cirrus Logic, Inc.Inventors: Kathryn R. Holland, Marc L. Tarabbia, Yaoyu Pang, Alexander Barr
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Publication number: 20210066221Abstract: A method may include forming a metal pattern in a metal layer of a fabricated integrated circuit device and under a target bump of the fabricated integrated circuit device, wherein the metal pattern has an inner shape and an outer field such that a void space in the metal layer is created between the inner shape and the outer field and approximately centering the void space on an outline of an under-bump metal formed under the target bump with a keepout distance from the inner shape and the outer field on either side of the outline such that the metal minimizes local variations in mechanical stress on underlying structures within the fabricated integrated circuit device.Type: ApplicationFiled: June 9, 2020Publication date: March 4, 2021Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Kathryn Rose HOLLAND, Marc L. TARABBIA, Yaoyu PANG, Alexander BARR
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Patent number: 10586865Abstract: A dual-gate metal-oxide-semiconductor field-effect transistor (MOSFET) may include a MOSFET having a channel region, a drain, and a source, a first gate formed proximate to the channel region, a drain extension region formed proximate to the drain, and a second gate formed proximate to the drain extension region.Type: GrantFiled: September 29, 2017Date of Patent: March 10, 2020Assignee: Cirrus Logic, Inc.Inventors: Scott Warrick, Justin Dougherty, Alexander Barr, Christian Larsen, Marc L. Tarabbia, Ying Ying
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Publication number: 20190103490Abstract: A dual-gate metal-oxide-semiconductor field-effect transistor (MOSFET) may include a MOSFET having a channel region, a drain, and a source, a first gate formed proximate to the channel region, a drain extension region formed proximate to the drain, and a second gate formed proximate to the drain extension region.Type: ApplicationFiled: September 29, 2017Publication date: April 4, 2019Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Scott WARRICK, Justin DOUGHERTY, Alexander BARR, Christian LARSEN, Marc L. TARABBIA, Ying YING
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Publication number: 20070235807Abstract: Two different transistors types are made on different crystal orientations in which both are formed on SOI. A substrate has an underlying semiconductor layer of one of the crystal orientations and an overlying layer of the other crystal orientation. The underlying layer has a portion exposed on which is epitaxially grown an oxygen-doped semiconductor layer that maintains the crystalline structure of the underlying semiconductor layer. A semiconductor layer is then epitaxially grown on the oxygen-doped semiconductor layer. An oxidation step at elevated temperatures causes the oxide-doped region to separate into oxide and semiconductor regions. The oxide region is then used as an insulation layer in an SOI structure and the overlying semiconductor layer that is left is of the same crystal orientation as the underlying semiconductor layer. Transistors of the different types are formed on the different resulting crystal orientations.Type: ApplicationFiled: May 1, 2007Publication date: October 11, 2007Applicant: Freescale Semiconductor, Inc.Inventors: Ted White, Alexander Barr, Bich-Yen Nguyen, Marius Orlowski, Mariam Sadaka, Voon-Yew Thean
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Publication number: 20070197095Abstract: An electrical connector assembly includes an organizer plate having a plurality apertures for receiving termination devices. Each termination device includes a shield box, an insulator, and a socket contact. The shield box has at least one outwardly extending ground contact element and a latch member. When the termination device is inserted into an aperture of the organizer plate, the latch member on the shield box engages a surface of the organizer plate to prevent withdrawal of the termination device.Type: ApplicationFiled: January 25, 2007Publication date: August 23, 2007Inventors: Steven Feldman, Kevin Meredith, Rudy Densmore, Joseph Castiglione, Alexander Mathews, Alexander Barr, Richard Scherer
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Publication number: 20070136031Abstract: The present invention includes a method of electronically designing an article, including accessing an electronic article design system, selecting an article type to design, and iteratively configuring a group of characteristics by selecting one or more options for each characteristic and/or iteratively modeling the article performance based on a selection of one or more performance parameters for each performance model. In the iterative configuration and modeling step, the electronic article design system automatically presents the characteristics and the performance models based on the article type selected, dynamically updates the article for each step of the iterative configuration and/or modeled performance, and automatically resolves conflicts between iteratively configured characteristics, between iteratively modeled performances, and across iteratively configured characteristics and modeled performances.Type: ApplicationFiled: December 5, 2006Publication date: June 14, 2007Inventors: Steven Feldman, Jason Randall, Alexander Barr, Abhay Joshi
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Publication number: 20070082453Abstract: A semiconductor substrate having a silicon layer is provided. In one embodiment, the substrate is a silicon-on-insulator (SOI) substrate having an oxide layer underlying the silicon layer. An amorphous or polycrystalline silicon germanium layer is formed overlying the silicon layer. Alternatively, germanium is implanted into a top portion of the silicon layer to form an amorphous silicon germanium layer. The silicon germanium layer is then oxidized to convert the silicon germanium layer into a silicon dioxide layer and to convert at least a portion of the silicon layer into germanium-rich silicon. The silicon dioxide layer is then removed prior to forming transistors using the germanium-rich silicon. In one embodiment, the germanium-rich silicon is selectively formed using a patterned masking layer over the silicon layer and under the silicon germanium layer. Alternatively, isolation regions may be used to define local regions of the substrate in which the germanium-rich silicon is formed.Type: ApplicationFiled: December 12, 2006Publication date: April 12, 2007Applicant: Freescale Semiconductor, Inc.Inventors: Marius Orlowski, Alexander Barr, Mariam Sadaka, Ted White
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Publication number: 20060292898Abstract: An electrical interconnection system includes a printed circuit board having a receiving cavity therein. At least one circuit trace is located on a side wall of the cavity. An electrical connector is configured for insertion into the receiving cavity. The electrical connector has an electrical contact positioned to contact the at least one circuit trace when inserted into the receiving cavity.Type: ApplicationFiled: June 23, 2005Publication date: December 28, 2006Inventors: Kevin Meredith, Alexander Barr, Steven Feldman
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Publication number: 20060240697Abstract: A connector assembly includes a frame mounted on a printed circuit substrate having a plurality of contact pads, and a spring member configured for insertion into the frame. The spring member has a flexible circuit supported thereon. The spring member and frame are shaped to exert biasing forces in two non-parallel directions when the spring member is inserted into the frame.Type: ApplicationFiled: April 26, 2005Publication date: October 26, 2006Inventors: Daniel Cronch, Alexander Barr, Wing Chow, Steven Feldman, Richard Scherer
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Publication number: 20060228851Abstract: According to the embodiments to the present disclosure, the process of making a dual strained channel semiconductor device includes integrating strained Si and compressed SiGe with trench isolation for achieving a simultaneous NMOS and PMOS performance enhancement. As described herein, the integration of NMOS and PMOS can be implemented in several ways to achieve NMOS and PMOS channels compatible with shallow trench isolation.Type: ApplicationFiled: March 30, 2005Publication date: October 12, 2006Inventors: Mariam Sadaka, Alexander Barr, Dejan Jovanovic, Bich-Yen Nguyen, Voon-Yew Thean, Shawn Thomas, Ted White
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Publication number: 20060174463Abstract: One aspect provides a capacitor feedthrough assembly having an electrically conductive member dimensioned to extend at least partially through a feedthrough hole of a case of the capacitor, the conductive member having a passage therethrough.Type: ApplicationFiled: March 29, 2006Publication date: August 10, 2006Inventors: Michael O'Phelan, Brian Schmidt, James Poplett, Robert Tong, Richard Kavanagh, Rajesh Iyer, Alexander Barr, Luke Christenson, Brian Waytashek, Brian Schenk, Gregory Sherwood
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Publication number: 20060094169Abstract: Two different transistors types are made on different crystal orientations in which both are formed on SOI. A substrate has an underlying semiconductor layer of one of the crystal orientations and an overlying layer of the other crystal orientation. The underlying layer has a portion exposed on which is epitaxially grown an oxygen-doped semiconductor layer that maintains the crystalline structure of the underlying semiconductor layer. A semiconductor layer is then epitaxially grown on the oxygen-doped semiconductor layer. An oxidation step at elevated temperatures causes the oxide-doped region to separate into oxide and semiconductor regions. The oxide region is then used as an insulation layer in an SOI structure and the overlying semiconductor layer that is left is of the same crystal orientation as the underlying semiconductor layer. Transistors of the different types are formed on the different resulting crystal orientations.Type: ApplicationFiled: October 29, 2004Publication date: May 4, 2006Inventors: Ted White, Alexander Barr, Bich-Yen Nguyen, Marius Orlowski, Mariam Sadaka, Voon-Yew Thean
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Publication number: 20060084207Abstract: P channel transistors are formed in a semiconductor layer that has a (110) surface orientation for enhancing P channel transistor performance, and the N channel transistors are formed in a semiconductor layer that has a (100) surface orientation. To further provide P channel transistor performance enhancement, the direction of their channel lengths is selected based on their channel direction. The narrow width P channel transistors are preferably oriented in the <100> direction. The wide channel width P channel transistors are preferably oriented in the <110> direction.Type: ApplicationFiled: October 20, 2004Publication date: April 20, 2006Inventors: Ted White, Alexander Barr, Dejan Jovanovic, Bich-Yen Nguyen, Mariam Sadaka, Voon-Yew Thean
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Publication number: 20060084235Abstract: A semiconductor fabrication process includes forming a transistor gate overlying an SOI wafer having a semiconductor top layer over a buried oxide layer (BOX) over a semiconductor substrate. Source/drain trenches, disposed on either side of the gate, are etched into the BOX layer. Source/drain structures are formed within the trenches. A depth of the source/drain structures is greater than the thickness of the top silicon layer and an upper surface of the source/drain structures coincides approximately with the transistor channel whereby vertical overlap between the source/drain structures and the gate is negligible. The trenches preferably extend through the BOX layer to expose a portion of the silicon substrate. The source/drain structures are preferably formed epitaxially and possibly in two stages including an oxygen rich stage and an oxygen free stage. A thermally anneal between the two epitaxial stages will form an isolation dielectric between the source/drain structure and the substrate.Type: ApplicationFiled: October 15, 2004Publication date: April 20, 2006Inventors: Alexander Barr, Olubunmi Adetutu, Bich-Yen Nguyen, Marius Orlowski, Mariam Sadaka, Voon-Yew Thean, Ted White
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Publication number: 20060065927Abstract: A semiconductor device (10) is formed by positioning a gate (22) overlying a semiconductor layer (16) of preferably silicon. A semiconductor material (26) of, for example only, SiGe or Ge, is formed adjacent the gate over the semiconductor layer and over source/drain regions. A thermal process diffuses the stressor material into the semiconductor layer. Lateral diffusion occurs to cause the formation of a strained channel (17) in which a stressor material layer (30) is immediately adjacent the strained channel. Extension implants create source and drain implants from a first portion of the stressor material layer. A second portion of the stressor material layer remains in the channel between the strained channel and the source and drain implants. A heterojunction is therefore formed in the strained channel. In another form, oxidation of the stressor material occurs rather than extension implants to form the strained channel.Type: ApplicationFiled: September 29, 2004Publication date: March 30, 2006Inventors: Voon-Yew Thean, Mariam Sadaka, Ted White, Alexander Barr, Venkat Kolagunta, Bich-Yen Nguyen, Victor Vartanian, Da Zhang
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Publication number: 20060068553Abstract: A semiconductor device (10) is formed by positioning a gate (22) overlying a semiconductor layer (16) of preferably silicon. A semiconductor material (26) of, for example only, SiGe or Ge, is formed adjacent the gate over the semiconductor layer and over source/drain regions. A thermal process diffuses the stressor material into the semiconductor layer. Lateral diffusion occurs to cause the formation of a strained channel (17) in which a stressor material layer (30) is immediately adjacent the strained channel. Extension implants create source and drain implants from a first portion of the stressor material layer. A second portion of the stressor material layer remains in the channel between the strained channel and the source and drain implants. A heterojunction is therefore formed in the strained channel. In another form, oxidation of the stressor material occurs rather than extension implants to form the strained channel.Type: ApplicationFiled: September 29, 2004Publication date: March 30, 2006Inventors: Voon-Yew Thean, Mariam Sadaka, Ted White, Alexander Barr, Venkat Kolagunta, Bich-Yen Nguyen, Victor Vartanian, Da Zhang
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Publication number: 20060040433Abstract: A process for forming a semiconductor device. The process includes forming a template layer for forming a layer of strained silicon. In one example a layer of graded silicon germanium is formed where the germanium is at a higher concentration at the lower portion and at a lower concentration at a top portion. When subject to a condensation process, the germanium of the top portion of the layer diffuses to a remaining portion of the silicon germanium layer. Because the silicon germanium layer has a higher concentration of germanium at lower portions, germanium pile up after condensation may be reduced at the upper portion of the remaining portion of the silicon germanium layer.Type: ApplicationFiled: August 17, 2004Publication date: February 23, 2006Inventors: Mariam Sadaka, Shawn Thomas, Ted White, Chun-Li Liu, Alexander Barr, Bich-Yen Nguyen, Voon-Yew Thean
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Publication number: 20050245092Abstract: A semiconductor substrate having a silicon layer is provided. In one embodiment, the substrate is a silicon-on-insulator (SOI) substrate having an oxide layer underlying the silicon layer. An amorphous or polycrystalline silicon germanium layer is formed overlying the silicon layer. Alternatively, germanium is implanted into a top portion of the silicon layer to form an amorphous silicon germanium layer. The silicon germanium layer is then oxidized to convert the silicon germanium layer into a silicon dioxide layer and to convert at least a portion of the silicon layer into germanium-rich silicon. The silicon dioxide layer is then removed prior to forming transistors using the germanium-rich silicon. In one embodiment, the germanium-rich silicon is selectively formed using a patterned masking layer over the silicon layer and under the silicon germanium layer. Alternatively, isolation regions may be used to define local regions of the substrate in which the germanium-rich silicon is formed.Type: ApplicationFiled: April 30, 2004Publication date: November 3, 2005Inventors: Marius Orlowski, Alexander Barr, Mariam Sadaka, Ted White
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Publication number: 20050237697Abstract: Implantable defibrillators are implanted into the chests of patients prone to suffering ventricular fibrillation, a potentially fatal heart condition. A critical component in these devices is an aluminum electrolytic capacitors, which stores and delivers one or more life-saving bursts of electric charge to a fibrillating heart. These capacitors make up about one third the total size of the defibrillators. Unfortunately, conventional manufacturers of these capacitors have paid little or no attention to reducing the size of these capacitors through improved capacitor packaging. Accordingly, the inventors contravened several conventional manufacturing principles and practices to devise unique space-saving packaging that allows dramatic size reduction.Type: ApplicationFiled: December 17, 2004Publication date: October 27, 2005Inventors: Michael O'Phelan, James Poplett, Robert Tong, Alexander Barr