Patents by Inventor Ronald A. Weimer
Ronald A. Weimer 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: 11257838Abstract: Methods and devices are disclosed, such as those involving memory cell devices with improved charge retention characteristics. In one or more embodiments, a memory cell is provided having an active area defined by sidewalls of neighboring trenches. A layer of dielectric material is blanket deposited over the memory cell, and etched to form spacers on sidewalls of the active area. Dielectric material is formed over the active area, a charge trapping structure is formed over the dielectric material over the active area, and a control gate is formed over the charge trapping structure. In some embodiments, the charge trapping structure includes nanodots. In some embodiments, the width of the spacers is between about 130% and about 170% of the thickness of the dielectric material separating the charge trapping material and an upper surface of the active area.Type: GrantFiled: February 27, 2020Date of Patent: February 22, 2022Assignee: Micron Technology, Inc.Inventors: Ronald A. Weimer, Kyu S. Min, Thomas M. Graettinger, Durai Vishak Nirmal Ramaswamy
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Publication number: 20200203360Abstract: Methods and devices are disclosed, such as those involving memory cell devices with improved charge retention characteristics. In one or more embodiments, a memory cell is provided having an active area defined by sidewalls of neighboring trenches. A layer of dielectric material is blanket deposited over the memory cell, and etched to form spacers on sidewalls of the active area. Dielectric material is formed over the active area, a charge trapping structure is formed over the dielectric material over the active area, and a control gate is formed over the charge trapping structure. In some embodiments, the charge trapping structure includes nanodots. In some embodiments, the width of the spacers is between about 130% and about 170% of the thickness of the dielectric material separating the charge trapping material and an upper surface of the active area.Type: ApplicationFiled: February 27, 2020Publication date: June 25, 2020Applicant: Micron Technology, Inc.Inventors: Ronald A. Weimer, Kyu S. Min, Thomas M. Graettinger, Durai Vishak Nirmal Ramaswamy
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Patent number: 10608005Abstract: Methods and devices are disclosed, such as those involving memory cell devices with improved charge retention characteristics. In one or more embodiments, a memory cell is provided having an active area defined by sidewalls of neighboring trenches. A layer of dielectric material is blanket deposited over the memory cell, and etched to form spacers on sidewalls of the active area. Dielectric material is formed over the active area, a charge trapping structure is formed over the dielectric material over the active area, and a control gate is formed over the charge trapping structure. In some embodiments, the charge trapping structure includes nanodots. In some embodiments, the width of the spacers is between about 130% and about 170% of the thickness of the dielectric material separating the charge trapping material and an upper surface of the active area.Type: GrantFiled: February 3, 2014Date of Patent: March 31, 2020Assignee: Micron Technology, Inc.Inventors: Ronald A. Weimer, Kyu S. Min, Thomas M. Graettinger, Durai Vishak Nirmal Ramaswamy
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Patent number: 9424226Abstract: Method and system for performing an equalization process between a remote PCI (Peripheral Component Interface)-Express device and a local PCI-Express device are provided. The use of a forced coefficient in a third phase of the equalization process is enabled. When the remote PCI-Express has made a preset request, then the local PCI-Express device sends the preset request back to the remote PCI-Express device with the forced coefficient.Type: GrantFiled: October 24, 2013Date of Patent: August 23, 2016Assignee: QLOGIC, CorporationInventor: Ronald A. Weimer
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Patent number: 9397210Abstract: A memory array has first and second memory cells over a semiconductor and an isolation region extending into the semiconductor. The isolation region includes an air gap between charge-storage structures of the first and second memory cells and a thickness of dielectric over the air gap and contained between the first and second memory cells.Type: GrantFiled: October 2, 2013Date of Patent: July 19, 2016Assignee: Micron Technology, Inc.Inventors: James Mathew, Gordon Haller, Ronald A. Weimer, John Hopkins, Vinayak K. Shamanna, Sanjeev Sapra
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Patent number: 9311268Abstract: Methods and systems for ignoring protocol defined framing errors at a peripheral device coupled to a processor via an interconnect system are provided. When a framing error violation does not affect data transfer to the peripheral device or from the peripheral device, the protocol defined link training sequence is disabled to ignore the framing error and the peripheral device continues to process data regardless of the framing error.Type: GrantFiled: October 21, 2013Date of Patent: April 12, 2016Assignee: QLOGIC, CorporationInventors: Qian Chen, Ronald A. Weimer
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Patent number: 9082714Abstract: Embodiments of the present disclosure are directed towards use of an etch process post wordline definition to improve data retention in a flash memory device. In one embodiment, a method includes forming a plurality of wordline structures on a substrate, wherein individual wordline structures of the plurality of wordline structures include a control gate having an electrically conductive material and a cap having an electrically insulative material formed on the control gate, depositing an electrically insulative material to form a liner on a surface of the individual wordline structures, and etching the liner to remove at least a portion of the liner. Other embodiments may be described and/or claimed.Type: GrantFiled: September 22, 2011Date of Patent: July 14, 2015Assignee: Intel CorporationInventors: Randy J. Koval, Max F. Hineman, Ronald A. Weimer, Vinayak K. Shamanna, Thomas M. Graettinger, William R. Kueber, Christopher Larsen, Alex J. Schrinsky
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Publication number: 20140027832Abstract: A memory array has first and second memory cells over a semiconductor and an isolation region extending into the semiconductor. The isolation region includes an air gap between charge-storage structures of the first and second memory cells and a thickness of dielectric over the air gap and contained between the first and second memory cells.Type: ApplicationFiled: October 2, 2013Publication date: January 30, 2014Applicant: Micron Technology, Inc.Inventors: James Mathew, Gordon Haller, Ronald A. Weimer, John Hopkins, Vinayak K. Shamanna, Sanjeev Sapra
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Patent number: 8569130Abstract: Methods of forming air gaps in memory arrays and memory arrays with air gaps thus formed are disclosed. One such method may include forming an isolation region, having a first dielectric, through a charge-storage structure that is over a semiconductor, the isolation region extending into the semiconductor; forming a second dielectric over the isolation region and charge-storage structure; and forming an air gap in the isolation region so that the air gap passes through the charge-storage structure and so that a thickness of the first dielectric is between the air gap and the second dielectric.Type: GrantFiled: July 28, 2011Date of Patent: October 29, 2013Assignee: Micron Technology, Inc.Inventors: James Mathew, Gordon Haller, Ronald A. Weimer, John Hopkins, Vinayak K. Shamanna, Sanjeev Sapra
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Publication number: 20130264628Abstract: Embodiments of the present disclosure describe techniques and configurations relating to use of an etch process post wordline definition to improve data retention in a flash memory device. In one embodiment, a method includes forming a plurality of wordline structures on a substrate, wherein individual wordline structures of the plurality of wordline structures include a control gate having an electrically conductive material and a cap having an electrically insulative material formed on the control gate, depositing an electrically insulative material to form a liner on a surface of the individual wordline structures, and etching the liner to remove at least a portion of the liner. Other embodiments may be described and/or claimed.Type: ApplicationFiled: September 22, 2011Publication date: October 10, 2013Inventors: Randy J. Koval, Max F. Hineman, Ronald A. Weimer, Vinayak K. Shamanna, Thomas M. Graettinger, William R. Kueber, Christopher Larsen, Alex J. Schrinsky
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Patent number: 8518184Abstract: The present disclosure provides methods and systems for controlling temperature. The method has particular utility in connection with controlling temperature in a deposition process, e.g., in depositing a heat-reflective material via CVD. One exemplary embodiment provides a method that involves monitoring a first temperature outside the deposition chamber and a second temperature inside the deposition chamber. An internal temperature in the deposition chamber can be increased in accordance with a ramp profile by (a) comparing a control temperature to a target temperature, and (b) selectively delivering heat to the deposition chamber in response to a result of the comparison. The target temperature may be determined in accordance with the ramp profile, but the control temperature in one implementation alternates between the first temperature and the second temperature.Type: GrantFiled: July 20, 2010Date of Patent: August 27, 2013Assignee: Micron Technology, Inc.Inventors: Kevin L. Beaman, Trung T. Doan, Lyle D. Breiner, Ronald A. Weimer, Er-Xuan Ping, David J. Kubista, Cem Basceri, Lingyi A. Zheng
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Patent number: 8384192Abstract: The present disclosure provides small scale capacitors (e.g., DRAM capacitors) and methods of forming such capacitors. One exemplary implementation provides a method of fabricating a capacitor that includes sequentially forming a first electrode, a dielectric layer, and a second electrode. At least one of the electrodes may be formed by a) reacting two precursors to deposit a first conductive layer at a first deposition rate, and b) depositing a second conductive layer at a second, lower deposition rate by depositing a precursor layer of one precursor at least one monolayer thick and exposing that precursor layer to another precursor to form a nanolayer reaction product. The second conductive layer may be in contact with the dielectric layer and have a thickness of no greater than about 50 ?.Type: GrantFiled: March 14, 2011Date of Patent: February 26, 2013Assignee: Micron Technology, Inc.Inventors: Lingyi A. Zheng, Trung T. Doan, Lyle D. Breiner, Er-Xuan Ping, Kevin L. Beaman, Ronald A. Weimer, Cem Basceri, David J. Kubista
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Publication number: 20130026600Abstract: Methods of forming air gaps in memory arrays and memory arrays with air gaps thus formed are disclosed. One such method may include forming an isolation region, having a first dielectric, through a charge-storage structure that is over a semiconductor, the isolation region extending into the semiconductor; forming a second dielectric over the isolation region and charge-storage structure; and forming an air gap in the isolation region so that the air gap passes through the charge-storage structure and so that a thickness of the first dielectric is between the air gap and the second dielectric.Type: ApplicationFiled: July 28, 2011Publication date: January 31, 2013Inventors: James Matthew, Gordon Haller, Ronald A. Weimer, John Hopkins, Vinayak K. Shamanna, Sanjeev Sapra
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Patent number: 8294192Abstract: A flash memory integrated circuit and a method for fabricating the same. A gate stack includes an initial oxide layer directly in contact with a silicon layer, defining an oxide-silicon interface therebetween. Additional oxide material is formed substantially uniformly along the oxide-silicon interface. Polysilicon grain boundaries at the interface are thereby passivated after etching. The interface can be formed between a tunnel oxide and a floating gate, and passivating the grain boundaries reduces erase variability. Oxide in an upper storage dielectric layer is enhanced in the dilute steam oxidation. The thin oxide layers serve as diffusion paths to enhance uniform distribution of OH species across the buried interfaces being oxidized.Type: GrantFiled: June 24, 2011Date of Patent: October 23, 2012Assignee: Micron Technology, Inc.Inventors: Ronald A. Weimer, Don C. Powell, John T. Moore, Jeff A. McKee
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Patent number: 8228743Abstract: Some embodiments include memory cells having vertically-stacked charge-trapping zones spaced from one another by dielectric material. The dielectric material may comprise high-k material. One or more of the charge-trapping zones may comprise metallic material. Such metallic material may be present as a plurality of discrete isolated islands, such as nanodots. Some embodiments include methods of forming memory cells in which two charge-trapping zones are formed over tunnel dielectric, with the zones being vertically displaced relative to one another, and with the zone closest to the tunnel dielectric having deeper traps than the other zone. Some embodiments include electronic systems comprising memory cells. Some embodiments include methods of programming memory cells having vertically-stacked charge-trapping zones.Type: GrantFiled: February 10, 2011Date of Patent: July 24, 2012Assignee: Micron Technology, Inc.Inventors: Kyu S. Min, Rhett T. Brewer, Tejas Krishnamohan, Thomas M. Graettinger, D. V. Nirmal Ramaswamy, Ronald A Weimer, Arup Bhattacharyya
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Patent number: 8153502Abstract: Methods of filling cavities or trenches. More specifically, methods of filling a cavity or trench in a semiconductor layer are provided. The methods include depositing a first dielectric layer into the trench by employing a conformal deposition process. Next, the first dielectric layer is etched to create a recess in the trench within the first dielectric layer. The recesses are then filled with a second dielectric layer by employing a high density plasma deposition process. The techniques may be particularly useful in filling cavities and trenches having narrow widths and/or high aspect ratios.Type: GrantFiled: May 16, 2006Date of Patent: April 10, 2012Assignee: Micron Technology, Inc.Inventors: Li Li, Ronald Weimer, Richard Stocks, Chris Hill
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Patent number: 8119483Abstract: Some embodiments include methods of utilizing polysilazane in forming non-volatile memory cells. The memory cells may be multi-level cells (MLCs). The polysilazane may be converted to silicon nitride, silicon dioxide, or silicon oxynitride with thermal processing and exposure to an ambient that contains one or both of oxygen and nitrogen. The methods may include using the polysilazane in forming a charge trapping layer of a non-volatile memory cell. The methods may alternatively, or additionally include using the polysilazane in forming intergate dielectric material of a non-volatile memory cell. Some embodiments include methods of forming memory cells of a NAND memory array.Type: GrantFiled: March 3, 2011Date of Patent: February 21, 2012Assignee: Micron Technology, Inc.Inventor: Ronald A. Weimer
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Publication number: 20110254075Abstract: A flash memory integrated circuit and a method for fabricating the same. A gate stack includes an initial oxide layer directly in contact with a silicon layer, defining an oxide-silicon interface therebetween. Additional oxide material is formed substantially uniformly along the oxide-silicon interface. Polysilicon grain boundaries at the interface are thereby passivated after etching. The interface can be is formed between a tunnel oxide and a floating gate, and passivating the grain boundaries reduces erase variability. Oxide in an upper storage dielectric layer is enhanced in the dilute steam oxidation. The thin oxide layers serve as diffusion paths to enhance uniform distribution of OH species across the buried interfaces being oxidized.Type: ApplicationFiled: June 24, 2011Publication date: October 20, 2011Applicant: MICRON TECHNOLOGY, INC.Inventors: Ronald A. Weimer, Don C. Powell, John T. Moore, Jeff A. McKee
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Patent number: 7989870Abstract: A flash memory integrated circuit and a method for fabricating the same. A gate stack includes an initial oxide layer directly in contact with a silicon layer, defining an oxide-silicon interface therebetween. Additional oxide material is formed substantially uniformly along the oxide-silicon interface. Polysilicon grain boundaries at the interface are thereby passivated after etching. The interface can be formed between a tunnel oxide and a floating gate, and passivating the grain boundaries reduces erase variability. Oxide in an upper storage dielectric layer is enhanced in the dilute steam oxidation. The thin oxide layers serve as diffusion paths to enhance uniform distribution of OH species across the buried interfaces being oxidized.Type: GrantFiled: July 31, 2009Date of Patent: August 2, 2011Assignee: Micron Technology, Inc.Inventors: Ronald A Weimer, Don C Powell, John T Moore, Jeff A McKee
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Publication number: 20110163416Abstract: The present disclosure provides small scale capacitors (e.g., DRAM capacitors) and methods of forming such capacitors. One exemplary implementation provides a method of fabricating a capacitor that includes sequentially forming a first electrode, a dielectric layer, and a second electrode. At least one of the electrodes may be formed by a) reacting two precursors to deposit a first conductive layer at a first deposition rate, and b) depositing a second conductive layer at a second, lower deposition rate by depositing a precursor layer of one precursor at least one monolayer thick and exposing that precursor layer to another precursor to form a nanolayer reaction product. The second conductive layer may be in contact with the dielectric layer and have a thickness of no greater than about 50 ?.Type: ApplicationFiled: March 14, 2011Publication date: July 7, 2011Applicant: MICRON TECHNOLOGY, INC.Inventors: Lingyi A. Zheng, Trung T. Doan, Lyle D. Breiner, Er-Xuan Ping, Kevin L. Beaman, Ronald A. Weimer, Cem Basceri, David J. Kubista