Patents by Inventor Douglas Bonser
Douglas Bonser 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: 8525234Abstract: Gate spacers are formed in FinFETS having a bottom portion of a first material extending to the height of the fins, and a top portion of a second material extending above the fins. An embodiment includes forming a fin structure on a substrate, the fin structure having a height and having a top surface and side surfaces, forming a gate substantially perpendicular to the fin structure over a portion of the top and side surfaces, for example over a center portion, forming a planarizing layer over the gate, the fin structure, and the substrate, removing the planarizing layer from the substrate, gate, and fin structure down to the height of the fin structure, and forming spacers on the fin structure and on the planarizing layer, adjacent the gate.Type: GrantFiled: March 14, 2012Date of Patent: September 3, 2013Assignee: GLOBALFOUNDRIES Inc.Inventors: Douglas Bonser, Catherine B. Labelle
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Patent number: 8268727Abstract: Methods of fabricating a semiconductor device on and in a semiconductor substrate are provided. In accordance with an exemplary embodiment of the invention, one method comprises forming a sacrificial mandrel overlying the substrate, wherein the sacrificial mandrel has sidewalls. Sidewall spacers are formed adjacent the sidewalls of the sacrificial mandrel, the sidewall spacers having an upper portion and a lower portion. The upper portion of the sidewall spacers is removed. The sacrificial mandrel is removed and the semiconductor substrate is etched using the lower portion of the sidewall spacers as an etch mask.Type: GrantFiled: April 20, 2009Date of Patent: September 18, 2012Assignee: GLOBALFOUNDRIES, Inc.Inventors: Frank S. Johnson, Douglas Bonser
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Publication number: 20120168833Abstract: Gate spacers are formed in FinFETS having a bottom portion of a first material extending to the height of the fins, and a top portion of a second material extending above the fins. An embodiment includes forming a fin structure on a substrate, the fin structure having a height and having a top surface and side surfaces, forming a gate substantially perpendicular to the fin structure over a portion of the top and side surfaces, for example over a center portion, forming a planarizing layer over the gate, the fin structure, and the substrate, removing the planarizing layer from the substrate, gate, and fin structure down to the height of the fin structure, and forming spacers on the fin structure and on the planarizing layer, adjacent the gate.Type: ApplicationFiled: March 14, 2012Publication date: July 5, 2012Applicant: GLOBALFOUNDRIES Inc.Inventors: Douglas BONSER, Catherine B. LABELLE
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Patent number: 8174055Abstract: Gate spacers are formed in FinFETS having a bottom portion of a first material extending to the height of the fins, and a top portion of a second material extending above the fins. An embodiment includes forming a fin structure on a substrate, the fin structure having a height and having a top surface and side surfaces, forming a gate substantially perpendicular to the fin structure over a portion of the top and side surfaces, for example over a center portion, forming a planarizing layer over the gate, the fin structure, and the substrate, removing the planarizing layer from the substrate, gate, and fin structure down to the height of the fin structure, and forming spacers on the fin structure and on the planarizing layer, adjacent the gate.Type: GrantFiled: February 17, 2010Date of Patent: May 8, 2012Assignee: GLOBALFOUNDRIES Inc.Inventors: Douglas Bonser, Catherine B. Labelle
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Publication number: 20110198673Abstract: Gate spacers are formed in FinFETS having a bottom portion of a first material extending to the height of the fins, and a top portion of a second material extending above the fins. An embodiment includes forming a fin structure on a substrate, the fin structure having a height and having a top surface and side surfaces, forming a gate substantially perpendicular to the fin structure over a portion of the top and side surfaces, for example over a center portion, forming a planarizing layer over the gate, the fin structure, and the substrate, removing the planarizing layer from the substrate, gate, and fin structure down to the height of the fin structure, and forming spacers on the fin structure and on the planarizing layer, adjacent the gate.Type: ApplicationFiled: February 17, 2010Publication date: August 18, 2011Applicant: GLOBALFOUNDRIES Inc.Inventors: Douglas Bonser, Catherine B. Labelle
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Patent number: 7985639Abstract: Methods are provided for fabricating a semiconductor device. A method forms a conductive fin arrangement on a first region of a semiconductor substrate. The method continues by forming a semiconductive resistor structure on a second region of the semiconductor substrate after forming the conductive fin arrangement, and forming a gate stack foundation structure overlying the conductive fin arrangement after forming the semiconductive resistor structure. The method removes portions of the gate stack foundation structure overlying the first region of the semiconductor substrate to define a gate structure for the semiconductor device.Type: GrantFiled: September 18, 2009Date of Patent: July 26, 2011Assignee: GLOBALFOUNDRIES, Inc.Inventors: Frank Scott Johnson, Douglas Bonser
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Publication number: 20110070712Abstract: Methods are provided for fabricating a semiconductor device. A method comprises forming a conductive fin arrangement on a first region of a semiconductor substrate. The method further comprises forming a semiconductive resistor structure on a second region of the semiconductor substrate after forming the conductive fin arrangement, and forming a gate stack foundation structure overlying the conductive fin arrangement after forming the semiconductive resistor structure. The method further comprises removing portions of the gate stack foundation structure overlying the first region of the semiconductor substrate to define a gate structure for the semiconductor device.Type: ApplicationFiled: September 18, 2009Publication date: March 24, 2011Applicant: GLOBALFOUNDRIES Inc.Inventors: Frank Scott JOHNSON, Douglas BONSER
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Publication number: 20100267238Abstract: Methods of fabricating a semiconductor device on and in a semiconductor substrate are provided. In accordance with an exemplary embodiment of the invention, one method comprises forming a sacrificial mandrel overlying the substrate, wherein the sacrificial mandrel has sidewalls. Sidewall spacers are formed adjacent the sidewalls of the sacrificial mandrel, the sidewall spacers having an upper portion and a lower portion. The upper portion of the sidewall spacers is removed. The sacrificial mandrel is removed and the semiconductor substrate is etched using the lower portion of the sidewall spacers as an etch mask.Type: ApplicationFiled: April 20, 2009Publication date: October 21, 2010Applicant: ADVANCED MICRO DEVICES, INC.Inventors: Frank S. Johnson, Douglas Bonser
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Patent number: 7279386Abstract: A method for forming spacers of specific dimensions on a polysilicon gate electrode protects the sidewalls of the polysilicon gate electrode during selective epitaxial growth. The spacers, whether asymmetric or symmetric, are precisely defined by using the same specific exposure tool, such as a 193 nm wavelength step and scan exposure tool, and the same pattern reticle, in both the defining of the polysilicon gate electrode pattern and the pattern spacer, while employing tight alignment specifications.Type: GrantFiled: December 3, 2004Date of Patent: October 9, 2007Assignee: Advanced Micro Devices, Inc.Inventors: Mark C. Kelling, Douglas Bonser, Srikanteswara Dakshina-Murthy, Asuka Nomura
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Patent number: 7144785Abstract: A strained silicon semiconductor arrangement with a shallow trench isolation (STI) structure has a strained silicon (Si) layer formed on a silicon germanium (SiGe) layer. A trench extends through the Si layer into the SiGe layer, and sidewall spacers are employed that cover the entirety of the sidewalls within the trench in the SiGe layer. Following STI fill, polish and nitride stripping process steps, further processing can be performed without concern of the SiGe layer being exposed to a silicide formation process.Type: GrantFiled: November 1, 2004Date of Patent: December 5, 2006Assignee: Advanced Micro Devices, Inc.Inventors: Srikanteswara Dakshina-Murthy, Douglas Bonser, Mark C. Kelling, Asuka Nomura
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Patent number: 7105399Abstract: Gate electrodes with selectively tuned channel thicknesses are formed by selective epitaxial growth. Embodiments include forming shallow trench isolation regions in an SOI substrate, selectively removing the nitride stop layer and pad oxide layer in an exposed particular active region, and implementing selective epitaxial growth to increase the thickness of the semiconductor layer in the particular active region. Subsequently, the remaining nitride stop and pad oxide layers in other active regions are removed, gate dielectric layers formed, as by thermal oxidation, and the transistors completed.Type: GrantFiled: December 7, 2004Date of Patent: September 12, 2006Assignee: Advanced Micro Devices, Inc.Inventors: Srikanteswara Dakshina-Murthy, Douglas Bonser, Hans Van Meer, David Brown
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Publication number: 20060121711Abstract: A method for forming spacers of specific dimensions on a polysilicon gate electrode protects the sidewalls of the polysilicon gate electrode during selective epitaxial growth. The spacers, whether asymmetric or symmetric, are precisely defined by using the same specific exposure tool, such as a 193 nm wavelength step and scan exposure tool, and the same pattern reticle, in both the defining of the polysilicon gate electrode pattern and the pattern spacer, while employing tight alignment specifications.Type: ApplicationFiled: December 3, 2004Publication date: June 8, 2006Inventors: Mark Kelling, Douglas Bonser, Srikanteswara Dakshina-Murthy, Asuka Nomura
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Publication number: 20060094205Abstract: A strained silicon semiconductor arrangement with a shallow trench isolation (STI) structure has a strained silicon (Si) layer formed on a silicon germanium (SiGe) layer. A trench extends through the Si layer into the SiGe layer, and sidewall spacers are employed that cover the entirety of the sidewalls within the trench in the SiGe layer. Following STI fill, polish and nitride stripping process steps, further processing can be performed without concern of the SiGe layer being exposed to a silicide formation process.Type: ApplicationFiled: November 1, 2004Publication date: May 4, 2006Inventors: Srikanteswara Dakshina-Murthy, Douglas Bonser, Mark Kelling, Asuka Nomura
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Publication number: 20050196928Abstract: STI divot formation is eliminated or substantially reduced by employing a very thin nitride polish stop layer, e.g., no thicker than 400 ?. The very thin nitride polish stop layer is retained in place during subsequent masking, implanting and cleaning steps to form dopant regions, and is removed prior to gate oxide and gate electrode formation.Type: ApplicationFiled: March 4, 2004Publication date: September 8, 2005Inventors: Douglas Bonser, Johannes Groschopf, Srikanteswara Dakshina-Murthy, John Pellerin, Jon Cheek
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Publication number: 20050020019Abstract: To reduce the width of a MOSFET gate, the gate is formed with a hardmask formed thereupon. An isotropic etch is then performed to trim the gate in order to reduce the width of the gate. The resulting gate may be formed with a width that is narrower than a minimum width achievable solely through conventional projection lithography techniques.Type: ApplicationFiled: August 19, 2004Publication date: January 27, 2005Inventors: Douglas Bonser, Marina Plat, Chih Yang, Scott Bell, Srikanteswara Dakshina-Murthy, Philip Fisher, Christopher Lyons
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Patent number: 6653735Abstract: A BARC comprising materials having a lower pinhole density than that of silicon oxynitride and materials having a coefficient of thermal expansion that is closer to the coefficient of thermal expansion of polysilicon than that of amorphous carbon is employed to reduce deformation of a pattern to be formed in a patternable layer. The patternable layer is formed over a substrate. A multi-layered anti-reflective coating is formed over the patternable layer. A photoresist pattern is formed on the coating. The coating may comprise an amorphous carbon layer formed over the patternable layer and a SiC layer having a lower pinhole density than the pinhole density of SiON formed over the amorphous carbon layer. The coating may also be formed over a polysilicon layer and comprise a thermal expansion buffer layer having a coefficient of thermal expansion that is closer to the coefficient of thermal expansion of polysilicon than that of amorphous carbon.Type: GrantFiled: July 30, 2002Date of Patent: November 25, 2003Assignee: Advanced Micro Devices, Inc.Inventors: Chih Yuh Yang, Douglas Bonser, Pei-Yuan Gao, Lu You
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Patent number: 6245581Abstract: The present invention provides for a method and an apparatus for controlling critical dimensions. At least one run of semiconductor devices is processed. A critical dimension measurement is performed upon at least one of the processed semiconductor device. An analysis of the critical dimension measurement is performed. A secondary process upon the semiconductor device in response to the critical dimension analysis is performed.Type: GrantFiled: April 19, 2000Date of Patent: June 12, 2001Assignee: Advanced Micro Devices, Inc.Inventors: Douglas Bonser, Anthony J. Toprac, Matthew Purdy, John R. Behnke, James H. Hussey, Jr.
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Patent number: 5883625Abstract: A system and method for automatically arranging objects inside a container of a graphical user interface in a visually attractive and effective manner. In a departure from the art, selectable grid styles are provided for arranging cells into different configurations inside the container. Depending on the grid style available, the cells may be placed in any one of many different grid styles, such as rectangular, rhombus-shaped, or circular. Furthermore, identifiers are utilized for placing objects such as icons or buttons in each cell and ordering the objects for other user applications. In this way, different grid styles can be utilized and/or easily changed and new grid styles can easily be added.Type: GrantFiled: April 22, 1996Date of Patent: March 16, 1999Assignee: AST Research, Inc.Inventors: Chris Crawford, Douglas Bonser