Patents by Inventor Don Carl Powell
Don Carl Powell 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: 7678678Abstract: An embodiment includes a process of forming a gate stack that acts to resist the redeposition to the semiconductive substrate of mobilized metal such as from a metal gate electrode. An embodiment also relates to a system that achieves the process. An embodiment also relates to a gate stack structure that provides a composition that resists the redeposition of metal during processing and field use.Type: GrantFiled: July 28, 2006Date of Patent: March 16, 2010Assignee: Micron Technology, Inc.Inventors: Fernando Gonzalez, Don Carl Powell
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Patent number: 7651956Abstract: A process for forming a thin layer exhibiting a substantially uniform property on an active surface of a semiconductor substrate. The process includes varying the temperature within a reaction chamber while a layer of a material is formed upon the semiconductor substrate. Varying the temperature within the reaction chamber facilitates temperature uniformity across the semiconductor wafer. As a result, a layer forming reaction occurs at a substantially consistent rate over the entire active surface of the semiconductor substrate. The process may also include oscillating the temperature within the reaction chamber while a layer of a material is being formed upon a semiconductor substrate.Type: GrantFiled: December 6, 2000Date of Patent: January 26, 2010Assignee: Micron Technology, Inc.Inventors: Garry Anthony Mercaldi, Don Carl Powell
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Patent number: 7442655Abstract: The invention includes selective oxidation methods and transistor fabrication methods. In one implementation, a selective oxidation method includes positioning a substrate within a chamber. The substrate has first and second different oxidizable materials. The substrate is therein exposed to a gas mixture comprising an oxidizer and a reducer under conditions effective to selectively grow an oxide layer on the first material relative to the second material. The oxidizer oxidizes the first and second materials under the conditions. The reducer reduces oxidized second material under the conditions back to the second material. After selectively growing the oxide layer on the first material relative to the second material, partial pressure of the oxidizer and the reducer is reduced within the chamber by flowing an inert gas to the chamber while chamber pressure and chamber temperature are at or above those of the conditions during the exposing. Other aspects and implementations are contemplated.Type: GrantFiled: July 18, 2006Date of Patent: October 28, 2008Assignee: Micron Technology, Inc.Inventor: Don Carl Powell
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Patent number: 7358171Abstract: An embodiment includes a process of forming a gate stack that acts to resist the redeposition to the semiconductive substrate of mobilized metal such as from a metal gate electrode. An embodiment also relates to a system that achieves the process. An embodiment also relates to a gate stack structure that provides a composition that resists the redeposition of metal during processing and field use.Type: GrantFiled: August 30, 2001Date of Patent: April 15, 2008Assignee: Micron Technology, Inc.Inventors: Fernando Gonzalez, Don Carl Powell
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Patent number: 7247584Abstract: A system and method for selectively increasing the thermal effect of a radiant energy source to the surface of an object relative to the substrate is described in the context of rapid thermal processing of semiconductor wafers, and apparatus produced therefrom. A radiation-absorptive atmosphere is introduced between the radiant energy source and the object to increase conductive heat transfer to the surface of the object and reduce the available radiant heat transfer to the substrate, thereby increasing the thermal effect to the surface relative to the substrate.Type: GrantFiled: August 31, 2004Date of Patent: July 24, 2007Assignee: Micron Technology, Inc.Inventor: Don Carl Powell
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Patent number: 7245010Abstract: Systems and devices are disclosed utilizing a silicon-containing barrier layer. A semiconductor device is disclosed and includes a substrate, a gate oxide, a silicon-containing barrier layer and a gate electrode. The gate oxide is formed over the substrate. The silicon-containing barrier layer is formed over the gate oxide by causing silicon atoms of a precursor layer to react with a reactive agent. The gate electrode is formed over the silicon-containing barrier layer.Type: GrantFiled: August 9, 2005Date of Patent: July 17, 2007Assignee: Micron Technology, Inc.Inventors: Don Carl Powell, Garry Anthony Mercaldi, Ronald A. Weimer
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Patent number: 7235497Abstract: The invention includes selective oxidation methods and transistor fabrication methods. In one implementation, a selective oxidation method includes positioning a substrate within a chamber. The substrate has first and second different oxidizable materials. The substrate is therein exposed to a gas mixture comprising an oxidizer and a reducer under conditions effective to selectively grow an oxide layer on the first material relative to the second material. The oxidizer oxidizes the first and second materials under the conditions. The reducer reduces oxidized second material under the conditions back to the second material. After selectively growing the oxide layer on the first material relative to the second material, partial pressure of the oxidizer and the reducer is reduced within the chamber by flowing an inert gas to the chamber while chamber pressure and chamber temperature are at or above those of the conditions during the exposing. Other aspects and implementations are contemplated.Type: GrantFiled: October 17, 2003Date of Patent: June 26, 2007Assignee: Micron Technology, Inc.Inventor: Don Carl Powell
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Patent number: 7129188Abstract: A transistor gate is formed which comprises semiconductive material and conductive metal. Source/drain regions are formed proximate the transistor gate. In one implementation, the transistor gate and source/drain regions are exposed to a gas mixture comprising H2O, H2, a noble gas and N2 under conditions effective to oxidize outer surfaces of the source/drain regions. The N2 is present in the gas mixture at greater than 0% and less than or equal to 20.0% by volume. In one implementation, the transistor gate and source/drain regions are exposed to a gas mixture comprising H2O, H2, and an inert gas under conditions effective to oxidize outer surfaces of the source/drain regions. The conditions comprise a pressure of greater than room ambient pressure. Other aspects and implementations are contemplated.Type: GrantFiled: March 20, 2006Date of Patent: October 31, 2006Assignee: Micron Technology, Inc.Inventor: Don Carl Powell
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Patent number: 7095088Abstract: Systems and devices are disclosed utilizing a silicon-containing barrier layer. A semiconductor device is disclosed and includes a substrate, a gate oxide, a silicon-containing barrier layer and a gate electrode. The gate oxide is formed over the substrate. The silicon-containing barrier layer is formed over the gate oxide by causing silicon atoms of a precursor layer react with a reactive agent. The gate electrode is formed over the silicon-containing barrier layer.Type: GrantFiled: June 3, 2004Date of Patent: August 22, 2006Assignee: Micron Technology, Inc.Inventors: Don Carl Powell, Garry Anthony Mercaldi, Ronald A. Weimer
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Patent number: 7071120Abstract: Disclosed is a process of treating semiconductor substrates, including the production of pure water, a method of producing the pure water for semiconductor fabrication, and a water-producing apparatus. Ammonia is catalytically oxidized in a catalytic conversion reactor to form pure water. The water is then supplied to a semiconductor fabrication process. The water-producing apparatus comprises a housing surrounding a catalytic material for adsorbing ammonia, an ammonia and oxidant source, each in communication with the housing, and an outlet for reaction products. The outlet is connected to a semiconductor processing apparatus. According to preferred embodiments of the invention, the apparatus can be a catalytic tube reactor, a fixed bed reactor or a fluidized bed reactor.Type: GrantFiled: March 18, 2003Date of Patent: July 4, 2006Assignee: Micron Technology, Inc.Inventor: Don Carl Powell
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Patent number: 7060514Abstract: A process for forming a thin layer exhibiting a substantially uniform property on an active surface of a semiconductor substrate includes varying the temperature within a reaction chamber while a layer of a material is formed upon the semiconductor substrate. Varying the temperature within the reaction chamber facilitates temperature uniformity across the semiconductor wafer. As a result, a layer forming reaction occurs at a substantially consistent rate over the entire active surface of the semiconductor substrate. The process may also include oscillating the temperature within the reaction chamber while a layer of a material is being formed upon a semiconductor substrate.Type: GrantFiled: December 21, 2004Date of Patent: June 13, 2006Assignee: Micron Technology, Inc.Inventors: Garry Anthony Mercaldi, Don Carl Powell
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Patent number: 7033554Abstract: Disclosed is a process of treating semiconductor substrates, including the production of pure water, a method of producing the pure water for semiconductor fabrication, and a water-producing apparatus. Ammonia is catalytically oxidized in a catalytic conversion reactor to form pure water. The water is then supplied to a semiconductor fabrication process. The water-producing apparatus comprises a housing surrounding a catalytic material for adsorbing ammonia, an ammonia and oxidant source, each in communication with the housing, and an outlet for reaction products. The outlet is connected to a semiconductor processing apparatus. According to preferred embodiments of the invention, the apparatus can be a catalytic tube reactor, a fixed bed reactor or a fluidized bed reactor.Type: GrantFiled: April 15, 2002Date of Patent: April 25, 2006Assignee: Micron Technology, Inc.Inventor: Don Carl Powell
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Patent number: 7015151Abstract: A transistor gate is formed which comprises semiconductive material and conductive metal. Source/drain regions are formed proximate the transistor gate. In one implementation, the transistor gate and source/drain regions are exposed to a gas mixture comprising H2O, H2, a noble gas and N2 under conditions effective to oxidize outer surfaces of the source/drain regions. The N2 is present in the gas mixture at greater than 0% and less than or equal to 20.0% by volume. In one implementation, the transistor gate and source/drain regions are exposed to a gas mixture comprising H2O, H2, and an inert gas under conditions effective to oxidize outer surfaces of the source/drain regions. The conditions comprise a pressure of greater than room ambient pressure. Other aspects and implementations are contemplated.Type: GrantFiled: March 24, 2005Date of Patent: March 21, 2006Assignee: Micron Technology, Inc.Inventor: Don Carl Powell
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Patent number: 6998356Abstract: A method of fabricating a semiconductor device including a silicon-containing dielectric layer is provided. In one embodiment, a silicon-containing material is deposited on a substrate. The deposited material is processed with a reactive agent to react with silicon atoms of the deposited material to form the dielectric layer. The silicon-containing dielectric layer provides for improved or smaller semiconductor devices by reducing leakage and increasing the dielectric constant.Type: GrantFiled: November 12, 2003Date of Patent: February 14, 2006Assignee: Micron Technology, Inc.Inventors: Don Carl Powell, Garry Anthony Mercaldi
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Patent number: 6960264Abstract: A process for forming a thin layer exhibiting a substantially uniform property on an active surface of a semiconductor substrate. The process includes varying the temperature within a reaction chamber while a layer of a material is formed upon the semiconductor substrate. Varying the temperature within the reaction chamber facilitates temperature uniformity across the semiconductor wafer. As a result, a layer forming reaction occurs at a substantially consistent rate over the entire active surface of the semiconductor substrate. The process may also include oscillating the temperature within the reaction chamber while a layer of a material is being formed upon a semiconductor substrate.Type: GrantFiled: January 14, 2002Date of Patent: November 1, 2005Assignee: Micron Technology, Inc.Inventors: Garry Anthony Mercaldi, Don Carl Powell
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Patent number: 6890867Abstract: A transistor gate is formed which comprises semiconductive material and conductive metal. Source/drain regions are formed proximate the transistor gate. In one implementation, the transistor gate and source/drain regions are exposed to a gas mixture comprising H2O, H2, a noble gas and N2 under conditions effective to oxidize outer surfaces of the source/drain regions. The N2 is present in the gas mixture at greater than 0% and less than or equal to 20.0% by volume. In one implementation, the transistor gate and source/drain regions are exposed to a gas mixture comprising H2O, H2, and an inert gas under conditions effective to oxidize outer surfaces of the source/drain regions. The conditions comprise a pressure of greater than room ambient pressure. Other aspects and implementations are contemplated.Type: GrantFiled: February 25, 2003Date of Patent: May 10, 2005Assignee: Micron Technology, Inc.Inventor: Don Carl Powell
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Patent number: 6837938Abstract: An apparatus for use with a deposition chamber includes a temperature control system that communicates with a heating element of the deposition chamber so as to not cause the formation of a thin layer exhibiting a substantially uniform property on an active surface of a semiconductor substrate. The apparatus causes uneven heat distribution across the surface of the substrate. The apparatus may also include a feedback control system that communicates with the temperature control system so as to cause the temperature control system to alter the heat output by the heating element and, thereby, to enhance the uniformity of at least one property of the material layer being deposited.Type: GrantFiled: May 8, 2003Date of Patent: January 4, 2005Assignee: Micron Technology, Inc.Inventors: Garry Anthony Mercaldi, Don Carl Powell
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Patent number: 6833280Abstract: A process for forming a thin layer exhibiting a substantially uniform property on an active surface of a semiconductor substrate. The process includes varying the temperature within a reaction chamber while a layer of a material is formed upon the semiconductor substrate. Varying the temperature within the reaction chamber facilitates temperature uniformity across the semiconductor wafer. As a result, a layer forming reaction occurs at a substantially consistent rate over the entire active surface of the semiconductor substrate. The process may also include oscillating the temperature within the reaction chamber while a layer of a material is being formed upon a semiconductor substrate.Type: GrantFiled: March 13, 1998Date of Patent: December 21, 2004Assignee: Micron Technology, Inc.Inventors: Garry Anthony Mercaldi, Don Carl Powell
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Publication number: 20040217476Abstract: Systems and devices are disclosed utilizing a silicon-containing barrier layer. A semiconductor device is disclosed and includes a substrate, a gate oxide, a silicon-containing barrier layer and a gate electrode. The gate oxide is formed over the substrate. The silicon-containing barrier layer is formed over the gate oxide by causing silicon atoms of a precursor layer react with a reactive agent. The gate electrode is formed over the silicon-containing barrier layer.Type: ApplicationFiled: June 3, 2004Publication date: November 4, 2004Inventors: Don Carl Powell, Garry Anthony Mercaldi, Ronald A. Weimer
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Patent number: 6787479Abstract: Disclosed is a process of treating semiconductor substrates, including the production of pure water, a method of producing the pure water for semiconductor fabrication, and a water-producing apparatus. Ammonia is catalytically oxidized in a catalytic conversion reactor to form pure water. The water is then supplied to a semiconductor fabrication process. The water-producing apparatus comprises a housing surrounding a catalytic material for adsorbing ammonia, an ammonia and oxidant source, each in communication with the housing, and an outlet for reaction products. The outlet is connected to a semiconductor processing apparatus. According to preferred embodiments of the invention, the apparatus can be a catalytic tube reactor, a fixed bed reactor or a fluidized bed reactor.Type: GrantFiled: April 18, 2002Date of Patent: September 7, 2004Assignee: Micron Technology, Inc.Inventor: Don Carl Powell