Patents by Inventor Dafna Beery
Dafna Beery 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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Publication number: 20210305256Abstract: A DRAM memory cell and memory cell array incorporating a metal silicide bit line buried within a doped portion of a semiconductor substrate and a vertical semiconductor structure electrically connected with a memory element such as a capacitive memory element. The buried metal silicide layer functions as a bit buried bit line which can provide a bit line voltage to the capacitive memory element via the vertical transistor structure. The buried metal silicide layer can be formed by allotaxy or mesotaxy. The vertical semiconductor structure can be formed by epitaxially growing a semiconductor material on an etched surface of the doped portion of the semiconductor substrate.Type: ApplicationFiled: March 24, 2020Publication date: September 30, 2021Inventors: Andrew J. Walker, Dafna Beery, Peter Cuevas, Amitay Levi
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Patent number: 11107979Abstract: Aspects of the present technology are directed toward Integrated Circuits (IC) including a plurality of trenches disposed in a substrate about a set of silicide regions. The trenches can extend down into the substrate below the set of silicide regions. The silicide regions can be formed by implanting metal ions into portions of a substrate exposed by a mask layer with narrow pitch openings. The trenches can be formed by selectively etching the substrate utilizing the set of silicide regions as a trench mask. An semiconductor material with various degree of crystallinity can be grown from the silicide regions, in openings that extend through subsequently formed layers down to the silicide regions.Type: GrantFiled: December 28, 2018Date of Patent: August 31, 2021Assignee: Spin Memory, Inc.Inventors: Kuk-Hwan Kim, Dafna Beery, Marcin Gajek, Michail Tzoufras, Kadriye Deniz Bozdag, Eric Ryan, Satoru Araki, Andy Walker
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Publication number: 20210233913Abstract: A dynamic random access memory element that includes a vertical semiconductor transistor element formed on a substrate and electrically connected with a memory element such as a capacitive memory element. The memory element is located above the semiconductor substrate such that the vertical transistor is between the memory element and the substrate. The vertical semiconductor transistor is formed on a heavily doped region of the substrate that is separated from other portions of the substrate by a dielectric isolation layer. The heavily doped region of the semiconductor substrate provides electrical connection between the vertical transistor structure and a bit line. The dynamic random access memory element also includes a word line that includes an electrically conductive gate layer that is separated from the semiconductor pillar by a gate dielectric layer.Type: ApplicationFiled: January 28, 2020Publication date: July 29, 2021Inventors: Andrew J. Walker, Dafna Beery, Peter Cuevas, Amitay Levi
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Publication number: 20210217814Abstract: A magnetic memory structure that includes a two-terminal resistive memory element electrically connected with a selector structure. The selector structure includes a semiconductor pillar structure formed on a semiconductor substrate. The selector structure is surrounded by a gate dielectric layer, and the semiconductor pillar structure and gate dielectric layer are surrounded by an electrically conductive gate structure. The semiconductor pillar has first and second dimensions in a plane parallel with the surface of the semiconductor substrate that are unequal with one another. The semiconductor pillar structure can have a cross-section parallel with the semiconductor substrate surface that is in the shape of a: rectangle; oval elongated polygon, etc. The length of the longer dimension can be adjusted to provide a desired amount of current though the semiconductor pillar structure to drive the two-terminal resistive memory element.Type: ApplicationFiled: January 9, 2020Publication date: July 15, 2021Inventors: Andrew J. Walker, Dafna Beery, Peter Cuevas, Amitay Levi
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Publication number: 20210090626Abstract: A magnetic memory array having an epitaxially grown vertical semiconductor selector connected with a two terminal resistive switching memory element via a bottom electrode such as TaN. An electrically conductive contact such as tungsten (W) or TaN can be included between the vertical semiconductor channel and the TaN bottom electrode. The electrically conductive contact and the TaN bottom electrode can both be formed by a damascene process wherein an opening is formed in an oxide layer and a metal is deposited into the opening. A chemical mechanical polishing process can then be performed to remove portions of the metal that extend out of the opening in the oxide layer over the oxide surface.Type: ApplicationFiled: November 15, 2019Publication date: March 25, 2021Inventors: Dafna Beery, Amitay Levi, Andrew J. Walker
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Patent number: 10957370Abstract: A magnetic memory array having an epitaxially grown vertical semiconductor selector connected with a two terminal resistive switching memory element via a bottom electrode such as TaN. An electrically conductive contact such as tungsten (W) or TaN can be included between the vertical semiconductor channel and the TaN bottom electrode. The electrically conductive contact and the TaN bottom electrode can both be formed by a damascene process wherein an opening is formed in an oxide layer and a metal is deposited into the opening. A chemical mechanical polishing process can then be performed to remove portions of the metal that extend out of the opening in the oxide layer over the oxide surface.Type: GrantFiled: November 15, 2019Date of Patent: March 23, 2021Assignee: SPIN MEMORY, INC.Inventors: Dafna Beery, Amitay Levi, Andrew J. Walker
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Publication number: 20210065760Abstract: A magnetic memory array having an epitaxially grown vertical semiconductor selector connected with a memory element via a bottom electrode such as TaN. An electrically conductive contact such as tungsten (W) or TaN can be included between the vertical semiconductor channel and the TaN bottom electrode. The electrically conductive contact and the TaN bottom electrode can both be formed by a damascene process wherein an opening is formed in an oxide layer and a metal is deposited into the opening. A chemical mechanical polishing process can then be performed to remove portions of the metal that extend out of the opening in the oxide layer over the oxide surface.Type: ApplicationFiled: August 29, 2019Publication date: March 4, 2021Inventors: Dafna Beery, Amitay Levi, Andrew J. Walker
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Patent number: 10937479Abstract: A magnetic memory array having an epitaxially grown vertical semiconductor selector connected with a memory element via a bottom electrode such as TaN. An electrically conductive contact such as tungsten (W) or TaN can be included between the vertical semiconductor channel and the TaN bottom electrode. The electrically conductive contact and the TaN bottom electrode can both be formed by a damascene process wherein an opening is formed in an oxide layer and a metal is deposited into the opening. A chemical mechanical polishing process can then be performed to remove portions of the metal that extend out of the opening in the oxide layer over the oxide surface.Type: GrantFiled: August 29, 2019Date of Patent: March 2, 2021Assignee: SPIN MEMORY, INC.Inventors: Dafna Beery, Amitay Levi, Andrew J. Walker
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Patent number: 10930703Abstract: A method for crystalized silicon structures from amorphous structures in a magnetic memory array, wherein the temperature needed to crystalize the amorphous silicon is lower than the temperature budget of the memory element so as to avoid damage to the memory element. An amorphous silicon is deposited, followed by a layer of Ti or Co. An annealing process is then performed which causes the Ti or Co to form TiSi2 or CoSi2 and also causes the underlying amorphous silicon to crystallize.Type: GrantFiled: December 31, 2018Date of Patent: February 23, 2021Assignee: SPIN MEMORY, INC.Inventors: Kuk-Hwan Kim, Dafna Beery, Marcin Gajek, Michail Tzoufras, Kadriye Deniz Bozdag, Eric Michael Ryan, Satoru Araki, Andrew J. Walker
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Patent number: 10916582Abstract: According to one embodiment, a method includes forming a first insulative layer above a bottom surface of a groove and along inner sidewalls thereof, forming a source line layer within the groove of the substrate, forming a first dielectric layer on outer sides of a middle portion of the source line layer, forming a buffer layer on outer sides of the first dielectric layer, forming a gate terminal above the source line layer, forming a gate dielectric layer between the source line layer and the gate terminal and on outer sides of the lower portion of the gate terminal, forming a drain terminal including strained Si on outer sides of the first dielectric layer, and forming a relaxed buffer layer on outer sides of the upper portion of the source line layer and outer sides of the drain terminal, with the gate terminal extending beyond the relaxed buffer layer thickness.Type: GrantFiled: December 30, 2017Date of Patent: February 9, 2021Assignee: SPIN MEMORY, INC.Inventors: Kuk-Hwan Kim, Dafna Beery, Amitay Levi, Andrew J. Walker
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Patent number: 10854255Abstract: A magnetic memory array having a source-plane electrically connected with an array of channel selectors in two-dimensions. The array of channel selectors can be arranged in rows and columns with both the rows and columns being electrically connected with a source-plane. A memory element such as a two terminal resistive switching memory element can be electrically connected with each of the channel selectors. The source-plane can include a doped region formed in a surface of a semiconductor substrate and may also include an electrically conductive layer formed on the doped region. The use of such a planar, two-dimensional source-plane allows for greatly increased data density by eliminating the need to form separate source-line source lines for individual rows of channel selectors.Type: GrantFiled: November 21, 2019Date of Patent: December 1, 2020Assignee: SPIN MEMORY, INC.Inventors: Adrian E. Ong, Andrew J. Walker, Dafna Beery
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Patent number: 10840298Abstract: A magnetic memory array having a source-plane electrically connected with an array of channel selectors in two-dimensions. The array of channel selectors can be arranged in rows and columns with both the rows and columns being electrically connected with a source-plane. A magnetic memory element such as a magnetic tunnel junction element can be electrically connected with each of the channel selectors. The source-plane can include a doped region formed in a surface of a semiconductor substrate and may also include an electrically conductive layer formed on the doped region. The use of such a planar, two-dimensional source-plane allows for greatly increased data density by eliminating the need to form separate source-line source lines for individual rows of channel selectors.Type: GrantFiled: June 28, 2019Date of Patent: November 17, 2020Assignee: SPIN MEMORY, INC.Inventors: Adrian E. Ong, Andrew J. Walker, Dafna Beery
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Patent number: 10790333Abstract: According to one embodiment, a method includes forming, at a low temperature, a thin film transistor structure above a flexible substrate in a film thickness direction. The low temperature is less than about 200° C., and the thin film transistor structure includes a contact pad on a lower or upper surface thereof. The method also includes forming, at a high temperature, a perpendicular magnetic tunnel junction (pMTJ) structure above a rigid substrate. The high temperature is greater than about 200° C. The method also includes removing the rigid substrate from below the pMTJ structure and bonding, at the low temperature, the pMTJ structure to the thin film transistor structure using an adhesion layer. Other methods of forming flexible substrates for mounting pMTJs and systems thereof are described in accordance with more embodiments.Type: GrantFiled: December 29, 2017Date of Patent: September 29, 2020Assignee: SPIN MEMORY, INC.Inventors: Kuk-Hwan Kim, Marcin Gajek, Dafna Beery, Amitay Levi
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Publication number: 20200212296Abstract: Aspects of the present technology are directed toward Integrated Circuits (IC) including a plurality of trenches disposed in a substrate about a set of silicide regions. The trenches can extend down into the substrate below the set of silicide regions. The silicide regions can be formed by implanting metal ions into portions of a substrate exposed by a mask layer with narrow pitch openings. The trenches can be formed by selectively etching the substrate utilizing the set of silicide regions as a trench mask. An semiconductor material with various degree of crystallinity can be grown from the silicide regions, in openings that extend through subsequently formed layers down to the silicide regions.Type: ApplicationFiled: December 28, 2018Publication date: July 2, 2020Inventors: Kuk-Hwan Kim, Dafna Beery, Marcin Gajek, Michail Tzoufras, Kadriye Deniz Bozdag, Eric Ryan, Satoru Araki, Andy Walker
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Patent number: 10686009Abstract: A method for forming three-dimensional magnetic memory arrays by forming crystalized silicon structures from amorphous structures in the magnetic memory array, wherein the temperature needed to crystalize the amorphous silicon is lower than the temperature budget of the memory element so as to avoid damage to the memory element. An amorphous silicon is deposited, followed by a layer of Ti or Co. An annealing process is then performed which causes the Ti or Co to form TiSi2 or CoSi2 and also causes the underlying amorphous silicon to crystallize.Type: GrantFiled: December 31, 2018Date of Patent: June 16, 2020Assignee: SPIN MEMORY, INC.Inventors: Kuk-Hwan Kim, Dafna Beery, Marcin Gajek, Michail Tzoufras, Kadriye Deniz Bozdag, Eric Michael Ryan, Satoru Araki, Andrew J. Walker
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Patent number: 10658425Abstract: A method of forming a transistor, according to one embodiment, includes: forming an doped material, depositing an oxide layer on the doped material, depositing a conducting layer on the oxide layer, patterning the conducting layer to form at least two word lines, depositing a nitride layer above the at least two word lines, defining at least two hole regions, at each of the defined hole regions, etching down to the doped material through each of the respective word lines, thereby creating at least two holes, depositing a gate dielectric layer on the nitride layer and in the at least two holes, depositing a protective layer on the gate dielectric layer, etching in each of the at least two holes down to the doped material, and removing a remainder of the protective layer.Type: GrantFiled: December 31, 2018Date of Patent: May 19, 2020Assignee: SPIN MEMORY, INC.Inventors: Kuk-Hwan Kim, Dafna Beery, Amitay Levi, Andrew J. Walker
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Publication number: 20200127052Abstract: A memory array for data recording that includes a selector transistor electrically connected with a two terminal resistive memory element such as a magnetic tunnel junction (MTJ) element. The selector transistor comprises a semiconductor column formed by selective epitaxial growth on a semiconductor surface. The semiconductor column is at least partially surrounded by a gate dielectric layer and an electrically conductive gate structure arranged such that the gate dielectric is between the electrically conducive gate structure and the semiconductor column. The selective epitaxial growth of the semiconductor column allows the semiconductor column to have a very low electrical resistance in an “on” state which allows the selector transistor to provide a high electrical current to the two terminal resistive memory element for reliable switching during data writing.Type: ApplicationFiled: December 18, 2019Publication date: April 23, 2020Inventors: Andrew J. Walker, Dafna Beery, Peter Cuevas, Amitay Levi
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Patent number: 10629649Abstract: According to one embodiment, a method of forming a magnetic memory device includes forming a source region including a first semiconductor material having a first conductivity above a substrate, forming an array of three-dimensional (3D) structures above the substrate, depositing a channel material on a surface of at least one sidewall of each 3D structure, depositing a gate dielectric material on the channel material on the surface of at least one sidewall of each 3D structure, forming a first isolation region in the cavity region above the substrate, forming a first gate region above the first isolation region in the cavity region, and forming a second isolation region above the first gate region, wherein a nth gate region is formed above a (n+1) isolation region thereafter until a top of the array of 3D structures, wherein each nth gate region is coupled to each nth perpendicular magnetic tunnel junction sensor of each 3D structure.Type: GrantFiled: December 29, 2017Date of Patent: April 21, 2020Assignee: SPIN MEMORY, INC.Inventors: Kuk-Hwan Kim, Dafna Beery, Amitay Levi, Andrew J. Walker
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Publication number: 20200013827Abstract: A method for forming three-dimensional magnetic memory arrays by forming crystalized silicon structures from amorphous structures in the magnetic memory array, wherein the temperature needed to crystalize the amorphous silicon is lower than the temperature budget of the memory element so as to avoid damage to the memory element. An amorphous silicon is deposited, followed by a layer of Ti or Co. An annealing process is then performed which causes the Ti or Co to form TiSi2 or CoSi2 and also causes the underlying amorphous silicon to crystallize.Type: ApplicationFiled: December 31, 2018Publication date: January 9, 2020Inventors: Kuk-Hwan Kim, Dafna Beery, Marcin Gajek, Michail Tzoufras, Kadriye Deniz Bozdag, Eric Michael Ryan, Satoru Araki, Andrew J. Walker
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Publication number: 20200013828Abstract: A method for crystalized silicon structures from amorphous structures in a magnetic memory array, wherein the temperature needed to crystalize the amorphous silicon is lower than the temperature budget of the memory element so as to avoid damage to the memory element. An amorphous silicon is deposited, followed by a layer of Ti or Co. An annealing process is then performed which causes the Ti or Co to form TiSi2 or CoSi2 and also causes the underlying amorphous silicon to crystallize.Type: ApplicationFiled: December 31, 2018Publication date: January 9, 2020Inventors: Kuk-Hwan Kim, Dafna Beery, Marcin Gajek, Michail Tzoufras, Kadriye Deniz Bozdag, Eric Michael Ryan, Satoru Araki, Andrew J. Walker