With Ferroelectric Material Layer Patents (Class 257/295)
  • Patent number: 11968842
    Abstract: A spin-orbit torque device is described. The spin-orbit torque device comprising an interfacing layer and a magnetic layer having a switchable magnetization direction. An interface is formed between the interfacing layer and the magnetic layer, the interface having a 3m1 crystallographic point group symmetry adapted to interact with an electric current to generate a spin torque for switching the magnetization direction of the magnetic layer. A method for fabricating the spin-orbit device and a method for switching the switchable magnetization of a spin-orbit torque device are also described.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: April 23, 2024
    Assignee: National University of Singapore
    Inventors: Jingsheng Chen, Liang Liu, Chenghang Zhou
  • Patent number: 11968844
    Abstract: Provided are a memory device and a method of forming the same. The memory device includes: a selector; a magnetic tunnel junction (MTJ) structure, disposed on the selector; a spin orbit torque (SOT) layer, disposed between the selector and the MTJ structure, wherein the SOT layer has a sidewall aligned with a sidewall of the selector; a transistor, wherein the transistor has a drain electrically coupled to the MTJ structure; a word line, electrically coupled to a gate of the transistor; a bit line, electrically coupled to the SOT layer; a first source line, electrically coupled to a source of the transistor; and a second source line, electrically coupled to the selector, wherein the transistor is configured to control a write signal flowing between the bit line and the second source line, and control a read signal flowing between the bit line and the first source line.
    Type: Grant
    Filed: November 6, 2022
    Date of Patent: April 23, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chien-Min Lee, Ming-Yuan Song, Yen-Lin Huang, Shy-Jay Lin, Tung-Ying Lee, Xinyu Bao
  • Patent number: 11968841
    Abstract: A ferroelectric device, for instance, a metal-ferroelectric-metal (MFM) capacitor, a ferroelectric random access memory (Fe-RAM), or a ferroelectric field effect transistor (FeFET), is provided. In one aspect, the ferroelectric device is based on hafnium zirconate (HZO). The ferroelectric device can include a first electrode and a second electrode, and a doped HZO layer, which is arranged between the first electrode and the second electrode. The doped HZO layer can include a ferroelectric layer and at least two non-zero remnant polarization charge states. The doped HZO layer can be doped with at least two different elements selected from the lanthanide series, or with a combination of at least one element selected from the lanthanide series and at least one rare earth element.
    Type: Grant
    Filed: February 7, 2022
    Date of Patent: April 23, 2024
    Assignee: IMEC vzw
    Inventors: Mihaela Ioana Popovici, Amey Mahadev Walke, Jan Van Houdt
  • Patent number: 11963458
    Abstract: Provided are a magnetic tunnel junction dement suppressing diffusion and penetration of constituent elements between a hard mask film, and a magnetic tunnel junction film and a protection layer, and a method for manufacturing the magnetic tunnel junction element. The magnetic tunnel junction element has a configuration in which a non-magnetic insertion layer (7) including Ta or the like is inserted beneath a hard mask layer (8).
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: April 16, 2024
    Assignee: TOHOKU UNIVERSITY
    Inventors: Koichi Nishioka, Tetsuo Endoh, Shoji Ikeda, Hiroaki Honjo, Hideo Sato, Sadahiko Miura
  • Patent number: 11961897
    Abstract: A first fin structure is disposed over a substrate. The first fin structure contains a semiconductor material. A gate dielectric layer is disposed over upper and side surfaces of the first fin structure. A gate electrode layer is formed over the gate dielectric layer. A second fin structure is disposed over the substrate. The second fin structure is physically separated from the first fin structure and contains a ferroelectric material. The second fin structure is electrically coupled to the gate electrode layer.
    Type: Grant
    Filed: January 10, 2022
    Date of Patent: April 16, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Chi-Hsing Hsu, Sai-Hooi Yeong, Ching-Wei Tsai, Kuan-Lun Cheng, Chih-Hao Wang, Min Cao
  • Patent number: 11955548
    Abstract: The present disclosure relates a ferroelectric field-effect transistor (FeFET) device. In some embodiments, the FeFET device includes a ferroelectric layer having a first side and a second side opposite to the first side and a gate electrode disposed along the first side of the ferroelectric layer. The FeFET device further includes an OS channel layer disposed along the second side of the ferroelectric layer opposite to the first side and a pair of source/drain regions disposed on opposite sides of the OS channel layer. The FeFET device further includes a 2D contacting layer disposed along the OS channel layer. The OS channel layer has a first doping type, and the 2D contacting layer has a second doping type different than the first doping type.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: April 9, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Mauricio Manfrini, Chih-Yu Chang, Sai-Hooi Yeong
  • Patent number: 11949017
    Abstract: The disclosed technology generally relates to ferroelectric materials and semiconductor devices, and more particularly to semiconductor memory devices incorporating doped polar materials. In one aspect, a semiconductor device comprises a capacitor which in turn comprises a polar layer comprising a base polar material doped with a dopant. The base polar material includes one or more metal elements and one or both of oxygen or nitrogen. The dopant comprises a metal element that is different from the one or more metal elements and is present at a concentration such that a ferroelectric switching voltage of the capacitor is different from that of the capacitor having the base polar material without being doped with the dopant by more than about 100 mV. The capacitor stack additionally comprises first and second crystalline conductive oxide electrodes on opposing sides of the polar layer.
    Type: Grant
    Filed: December 16, 2022
    Date of Patent: April 2, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Ramesh Ramamoorthy, Sasikanth Manipatruni, Gaurav Thareja
  • Patent number: 11949018
    Abstract: The disclosed technology generally relates to ferroelectric materials and semiconductor devices, and more particularly to semiconductor memory devices incorporating doped polar materials. In one aspect, a semiconductor device comprises a capacitor which in turn comprises a polar layer comprising a base polar material doped with a dopant. The base polar material includes one or more metal elements and one or both of oxygen or nitrogen. The dopant comprises a metal element that is different from the one or more metal elements and is present at a concentration such that a ferroelectric switching voltage of the capacitor is different from that of the capacitor having the base polar material without being doped with the dopant by more than about 100 mV. The capacitor stack additionally comprises first and second crystalline conductive oxide electrodes on opposing sides of the polar layer.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: April 2, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Ramesh Ramamoorthy, Sasikanth Manipatruni, Gaurav Thareja
  • Patent number: 11943925
    Abstract: A semiconductor memory device includes first conductive lines stacked in a first direction perpendicular to a top surface of a substrate, second conductive lines extending in the first direction and intersecting the first conductive lines, and memory cells provided at intersection points between the first conductive lines and the second conductive lines, respectively. Each of the memory cells includes a semiconductor pattern parallel to the top surface of the substrate, the semiconductor pattern including a source region having a first conductivity type, a drain region having a second conductivity type, and a channel region between the source region and the drain region, first and second gate electrodes surrounding the channel region of the semiconductor pattern, and a charge storage pattern between the semiconductor pattern and the first and second gate electrodes.
    Type: Grant
    Filed: June 1, 2021
    Date of Patent: March 26, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyuncheol Kim, Jaeho Hong, Yongseok Kim, Ilgweon Kim, Hyeoungwon Seo, Sungwon Yoo, Kyunghwan Lee
  • Patent number: 11937433
    Abstract: An example of an apparatus includes a plurality of memory cells. At least a portion of the memory cells have a bottom electrode with each bottom electrode being at least partially electrically isolated from remaining ones of the bottom electrodes. At least one resistive interconnect electrically couples two or more of the bottom electrodes. The resistive interconnect is arranged to discharge at least a portion of excess charge from the two or more bottom electrodes. Additional apparatuses and methods of forming the apparatuses are disclosed.
    Type: Grant
    Filed: June 15, 2022
    Date of Patent: March 19, 2024
    Assignee: Micron Technology, Inc.
    Inventor: Durai Vishak Nirmal Ramaswamy
  • Patent number: 11929207
    Abstract: A capacitor includes: a plurality of bottom electrodes; a dielectric layer formed over the bottom electrodes; and a top electrode formed over the dielectric layer, wherein the top electrode includes a carbon-containing material and a germanium-containing material that fill a gap between the bottom electrodes.
    Type: Grant
    Filed: January 3, 2022
    Date of Patent: March 12, 2024
    Assignee: SK hynix Inc.
    Inventor: Seung-Muk Kim
  • Patent number: 11929404
    Abstract: A semiconductor structure comprises a gate structure of a transistor. The gate structure comprises a gate conductive portion disposed on a gate dielectric layer. The semiconductor structure further comprises a capacitor structure disposed on the gate structure. The capacitor structure comprises a first conductive layer, a dielectric layer disposed on the first conductive layer and a second conductive layer disposed on the dielectric layer. The first and second conductive layers are respectively connected to a first contact portion and a second contact portion.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: March 12, 2024
    Assignee: International Business Machines Corporation
    Inventors: Alexander Reznicek, Takashi Ando, Bahman Hekmatshoartabari, Nanbo Gong
  • Patent number: 11930643
    Abstract: Methods, systems, and devices for thin film transistor deck selection in a memory device are described. A memory device may include memory arrays arranged in a stack of decks formed over a substrate, and deck selection components distributed among the layers to leverage common substrate-based circuitry. For example, each memory array of the stack may include a set of digit lines of a corresponding deck, and deck selection circuitry operable to couple the set of digit lines with a column decoder that is shared among multiple decks. To access memory cells of a selected memory array on one deck, the deck selection circuitry corresponding to the memory array may each be activated, while the deck selection circuitry corresponding to a non-selected memory array on another deck may be deactivated. The deck selection circuitry, such as transistors, may leverage thin-film manufacturing techniques, such as various techniques for forming vertical transistors.
    Type: Grant
    Filed: May 21, 2021
    Date of Patent: March 12, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Daniele Vimercati, Fatma Arzum Simsek-Ege
  • Patent number: 11925031
    Abstract: A method of forming an array of capacitors comprises forming rows and columns of horizontally-spaced openings in a sacrificial material. Fill material is formed in multiple of the columns of the openings and lower capacitor electrodes a are formed in a plurality of the columns that are between the columns of the openings comprising the fill material therein. The fill material is of different composition from that of the lower capacitor electrodes. The fill material is between a plurality of horizontally-spaced groups that individually comprises the lower capacitor electrodes. Immediately-adjacent of the groups are horizontally spaced apart from one another by a gap that comprises at least one of the columns of the openings comprising the fill material therein. The sacrificial material is removed to expose laterally-outer sides of the lower capacitor electrodes. A capacitor insulator is formed over tops and the laterally-outer sides of the lower capacitor electrodes.
    Type: Grant
    Filed: September 22, 2022
    Date of Patent: March 5, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Fatma Arzum Simsek-Ege, Durai Vishak Nirmal Ramaswamy
  • Patent number: 11923360
    Abstract: A semiconductor device includes a substrate, a pair of semiconductor fins, a dummy fin structure, a gate structure, a plurality of source/drain structures, a crystalline hard mask layer, and an amorphous hard mask layer. The pair of semiconductor fins extend upwardly from the substrate. The dummy fin structure extends upwardly above the substrate and is laterally between the pair of semiconductor fins. The gate structure extends across the pair of semiconductor fins and the dummy fin structure. The source/drain structures are above the pair of semiconductor fins and on either side of the gate structure. The crystalline hard mask layer extends upwardly from the dummy fin and has an U-shaped cross section. The amorphous hard mask layer is in the first hard mask layer, wherein the amorphous hard mask layer having an U-shaped cross section conformal to the U-shaped cross section of the crystalline hard mask layer.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: March 5, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Kun-Yu Lee, Chun-Yao Wang, Chi On Chui
  • Patent number: 11925017
    Abstract: A semiconductor device is provided. The semiconductor device includes a substrate, a stacked gate structure, and a wall structure. The stacked gate structure is on the substrate and extending along a first direction. The wall structure is on the substrate and laterally aside the stacked gate structure. The wall structure extends along the first direction and a second direction perpendicular to the first direction. The stacked gate structure is overlapped with the wall structure in the first direction and the second direction.
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: March 5, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chien-Hsuan Liu, Chiang-Ming Chuang, Chih-Ming Lee, Kun-Tsang Chuang, Hung-Che Liao, Chia-Ming Pan, Hsin-Chi Chen
  • Patent number: 11916144
    Abstract: In some embodiments of the present disclosure, a method for forming a semiconductor device is described. A semiconductor layer is formed and a dielectric layer is formed. A pressurized treatment is performed to transform the semiconductor layer into a low-doping semiconductor layer and transform the dielectric layer into a crystalline ferroelectric layer. A gate layer is formed. An insulating layer is formed over the gate layer, the crystalline ferroelectric layer and the low-doping semiconductor layer. Contact openings are formed in the insulating layer exposing portions of the low-doping semiconductor layer. Source and drain terminals are formed on the low-doping semiconductor layer.
    Type: Grant
    Filed: August 9, 2022
    Date of Patent: February 27, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Georgios Vellianitis, Chun-Chieh Lu, Sai-Hooi Yeong, Mauricio Manfrini
  • Patent number: 11917831
    Abstract: In some embodiments, the present disclosure relates to an integrated chip that includes a first conductive structure arranged over a substrate. A memory layer is arranged over the first conductive structure, below a second conductive structure, and includes a ferroelectric material. An annealed seed layer is arranged between the first and second conductive structures and directly on a first side of the memory layer. An amount of the crystal structure that includes an orthorhombic phase is greater than about 35 percent.
    Type: Grant
    Filed: August 5, 2022
    Date of Patent: February 27, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Song-Fu Liao, Rainer Yen-Chieh Huang, Hai-Ching Chen, Chung-Te Lin
  • Patent number: 11908943
    Abstract: The disclosed technology generally relates to ferroelectric materials and semiconductor devices, and more particularly to semiconductor memory devices incorporating doped polar materials. In one aspect, a semiconductor device comprises a capacitor which in turn comprises a polar layer comprising a base polar material doped with a dopant. The base polar material includes one or more metal elements and one or both of oxygen or nitrogen. The dopant comprises a metal element that is different from the one or more metal elements and is present at a concentration such that a ferroelectric switching voltage of the capacitor is different from that of the capacitor having the base polar material without being doped with the dopant by more than about 100 mV. The capacitor stack additionally comprises first and second crystalline conductive oxide electrodes on opposing sides of the polar layer.
    Type: Grant
    Filed: March 9, 2023
    Date of Patent: February 20, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Ramesh Ramamoorthy, Sasikanth Manipatruni, Gaurav Thareja
  • Patent number: 11910589
    Abstract: A semiconductor memory cell comprising an electrically floating body. A method of operating the memory cell is provided.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: February 20, 2024
    Assignee: Zeno Semiconductor, Inc.
    Inventors: Jin-Woo Han, Yuniarto Widjaja
  • Patent number: 11903324
    Abstract: A method for etching a magnetic tunneling junction (MTJ) structure is described. A stack of MTJ layers is provided on a bottom electrode. A top electrode is provided on the MTJ stack. The top electrode is patterned. Thereafter, the MTJ stack not covered by the patterned top electrode is oxidized or nitridized. Then, the MTJ stack is patterned to form a MTJ device wherein any sidewall re-deposition formed on sidewalls of the MTJ device is non-conductive and wherein some of the dielectric layer remains on horizontal surfaces of the bottom electrode.
    Type: Grant
    Filed: July 26, 2022
    Date of Patent: February 13, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Yu-Jen Wang, Dongna Shen, Vignesh Sundar, Sahil Patel
  • Patent number: 11903217
    Abstract: An integrated chip including a semiconductor layer over a substrate. A pair of source/drains are arranged along the semiconductor layer. A first metal layer is over the substrate. A second metal layer is over the first metal layer. A ferroelectric layer is over the second metal layer. The first metal layer has a first crystal orientation and the second metal layer has a second crystal orientation different from the first crystal orientation.
    Type: Grant
    Filed: August 5, 2021
    Date of Patent: February 13, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Yen-Chieh Huang, Hai-Ching Chen, Chung-Te Lin
  • Patent number: 11903219
    Abstract: A configuration for efficiently placing a group of capacitors with one terminal connected to a common node is described. The capacitors are stacked and folded along the common node. In a stack and fold configuration, devices are stacked vertically (directly or with a horizontal offset) with one terminal of the devices being shared to a common node, and further the capacitors are placed along both sides of the common node. The common node is a point of fold. In one example, the devices are capacitors. N number of capacitors can be divided in L number of stack layers such that there are N/L capacitors in each stacked layer. The N/L capacitors are shorted together with an electrode (e.g., bottom electrode). The electrode can be metal, a conducting oxide, or a combination of a conducting oxide and a barrier material. The capacitors can be planar, non-planar or replaced by memory elements.
    Type: Grant
    Filed: March 11, 2022
    Date of Patent: February 13, 2024
    Assignee: KEPLER COMPUTING INC.
    Inventors: Rajeev Kumar Dokania, Amrita Mathuriya, Debo Olaosebikan, Tanay Gosavi, Noriyuki Sato, Sasikanth Manipatruni
  • Patent number: 11901400
    Abstract: A capacitor is disclosed that includes a first metal layer and a seed layer on the first metal layer. The seed layer includes a polar phase crystalline structure. The capacitor also includes a ferroelectric layer on the seed layer and a second metal layer on the ferroelectric layer.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: February 13, 2024
    Assignee: Intel Corporation
    Inventors: Nazila Haratipour, Chia-Ching Lin, Sou-Chi Chang, Ashish Verma Penumatcha, Owen Loh, Mengcheng Lu, Seung Hoon Sung, Ian A. Young, Uygar Avci, Jack T. Kavalieros
  • Patent number: 11894417
    Abstract: A memory device includes a first electrode comprising a first conductive nonlinear polar material, where the first conductive nonlinear polar material comprises a first average grain length. The memory device further includes a dielectric layer comprising a perovskite material on the first electrode, where the perovskite material includes a second average grain length. A second electrode comprising a second conductive nonlinear polar material is on the dielectric layer, where the second conductive nonlinear polar material includes a third grain average length that is less than or equal to the first average grain length or the second average grain length.
    Type: Grant
    Filed: February 3, 2022
    Date of Patent: February 6, 2024
    Assignee: KEPLER COMPUTING INC.
    Inventors: Niloy Mukherjee, Somilkumar J. Rathi, Jason Y. Wu, Pratyush Pandey, Zeying Ren, FNU Atiquzzaman, Gabriel Antonio Paulius Velarde, Noriyuki Sato, Mauricio Manfrini, Tanay Gosavi, Rajeev Kumar Dokania, Amrita Mathuriya, Ramamoorthy Ramesh, Sasikanth Manipatruni
  • Patent number: 11894461
    Abstract: A semiconductor device includes a semiconductor substrate, an interfacial layer formed on the semiconductor substrate, a high-k dielectric layer formed on the interfacial layer, and a conductive gate electrode layer formed on the high-k dielectric layer. At least one of the high-k dielectric layer and the interfacial layer is doped with: a first dopant species, a second dopant species, and a third dopant species. The first dopant species and the second dopant species form a plurality of first dipole elements having a first polarity. The third dopant species forms a plurality of second dipole elements having a second polarity, and the first and second polarities are opposite.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: February 6, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Hsiang-Pi Chang, Yen-Tien Tung, Dawei Heh, Chung-Liang Cheng, I-Ming Chang, Yao-Sheng Huang, Tzer-Min Shen, Huang-Lin Chao
  • Patent number: 11894449
    Abstract: Heterostructures include a layer of a two-dimensional material placed on a multiferroic layer. An ordered array of differing polarization domains in the multiferroic layer produces corresponding domains having differing properties in the two-dimensional material. When the multiferroic layer is ferroelectric, the ferroelectric polarization domains in the layer produce local electric fields that penetrate the two-dimensional material. The local electric fields modulate the charge carriers and carrier density on a nanometer length scale, resulting in the formation of lateral p-n or p-i-n junctions, and variations thereof appropriate for device functions.
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: February 6, 2024
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Berend T. Jonker, Connie H. Li, Kathleen M. McCreary, Olaf M. J. van't Erve
  • Patent number: 11888067
    Abstract: The disclosed technology generally relates to ferroelectric materials and semiconductor devices, and more particularly to semiconductor memory devices incorporating doped polar materials. In one aspect, a semiconductor device comprises a capacitor which in turn comprises a polar layer comprising a base polar material doped with a dopant. The base polar material includes one or more metal elements and one or both of oxygen or nitrogen. The dopant comprises a metal element that is different from the one or more metal elements and is present at a concentration such that a ferroelectric switching voltage of the capacitor is different from that of the capacitor having the base polar material without being doped with the dopant by more than about 100 mV. The capacitor stack additionally comprises first and second crystalline conductive oxide electrodes on opposing sides of the polar layer.
    Type: Grant
    Filed: March 10, 2023
    Date of Patent: January 30, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Ramesh Ramamoorthy, Sasikanth Manipatruni, Gaurav Thareja
  • Patent number: 11888066
    Abstract: The disclosed technology generally relates to ferroelectric materials and semiconductor devices, and more particularly to semiconductor memory devices incorporating doped polar materials. In one aspect, a semiconductor device comprises a capacitor which in turn comprises a polar layer comprising a base polar material doped with a dopant. The base polar material includes one or more metal elements and one or both of oxygen or nitrogen. The dopant comprises a metal element that is different from the one or more metal elements and is present at a concentration such that a ferroelectric switching voltage of the capacitor is different from that of the capacitor having the base polar material without being doped with the dopant by more than about 100 mV. The capacitor stack additionally comprises first and second crystalline conductive oxide electrodes on opposing sides of the polar layer.
    Type: Grant
    Filed: December 16, 2022
    Date of Patent: January 30, 2024
    Assignee: Kepler Computing Inc.
    Inventors: Ramesh Ramamoorthy, Sasikanth Manipatruni, Gaurav Thareja
  • Patent number: 11881458
    Abstract: In one example, a semiconductor device comprises a first substrate comprising a first conductive structure, a first body over the first conductive structure and comprising an inner sidewall defining a cavity in the first body, a first interface dielectric over the first body, and a first internal interconnect in the first body and the first interface dielectric, and coupled with the first conductive structure. The semiconductor device further comprises a second substrate over the first substrate and comprising a second interface dielectric, a second body over the second interface dielectric, and a second conductive structure over the second body and comprising a second internal interconnect in the second body and the second interface dielectric. An electronic component is in the cavity, and the second internal interconnect is coupled with the first internal interconnect. Other examples and related methods are also disclosed herein.
    Type: Grant
    Filed: January 12, 2023
    Date of Patent: January 23, 2024
    Assignee: Amkor Technology Singapore Holding Pte. Ltd.
    Inventors: Jin Young Khim, Won Chul Do, Sang Hyoun Lee, Ji Hun Yi, Ji Yeon Ryu
  • Patent number: 11881242
    Abstract: A memory device includes a plurality of memory cells. Each memory cell includes a multi-gate FeFET that has a first source/drain terminal, a second source/drain terminal, and a gate with a plurality of ferroelectric layers configured such that each of the ferroelectric layers has a respective unique switching E-field.
    Type: Grant
    Filed: July 29, 2022
    Date of Patent: January 23, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventor: Perng-Fei Yuh
  • Patent number: 11882685
    Abstract: A memory cell is disclosed. The memory cell includes a transistor and a capacitor. The transistor includes a source region, a drain region, and a channel region including an indium gallium zinc oxide (IGZO, which is also known in the art as GIZO) material. The capacitor is in operative communication with the transistor, and the capacitor includes a top capacitor electrode and a bottom capacitor electrode. Also disclosed is a semiconductor device including a dynamic random access memory (DRAM) array of DRAM cells. Also disclosed is a system including a memory array of DRAM cells and methods for forming the disclosed memory cells and arrays of cells.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: January 23, 2024
    Assignee: Micron Technology, Inc.
    Inventor: Gurtej S. Sandhu
  • Patent number: 11869843
    Abstract: A device includes, in a first region, a first conductive interconnect, an electrode structure on the first conductive interconnect, where the electrode structure includes a first conductive hydrogen barrier layer and a first conductive fill material. A memory device including a ferroelectric material or a paraelectric material is on the electrode structure. A second dielectric includes an amorphous, greater than 90% film density hydrogen barrier material laterally surrounds the memory device. A via electrode including a second conductive hydrogen barrier material is on at least a portion of the memory device. A second region includes a conductive interconnect structure embedded within a less than 90% film density material.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: January 9, 2024
    Assignee: KEPLER COMPUTING INC.
    Inventors: Noriyuki Sato, Niloy Mukherjee, Mauricio Manfrini, Tanay Gosavi, Rajeev Kumar Dokania, Somilkumar J. Rathi, Amrita Mathuriya, Sasikanth Manipatruni
  • Patent number: 11871581
    Abstract: A ferroelectric memory cell (FeRAM) is disclosed that includes an active device (e.g., a transistor) and a passive device (e.g., a ferroelectric capacitor) integrated in a substrate. The transistor and its gate contacts are formed on a front side of the substrate. A carrier wafer can be bonded to the active device to allow the active device to be inverted so that the passive device and associated contacts can be electrically coupled from a back side of the substrate.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: January 9, 2024
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chung-Liang Cheng, Huang-Lin Chao
  • Patent number: 11871583
    Abstract: A pocket integration for high density memory and logic applications and methods of fabrication are described. While various embodiments are described with reference to FeRAM, capacitive structures formed herein can be used for any application where a capacitor is desired. For example, the capacitive structure can be used for fabricating ferroelectric based or paraelectric based majority gate, minority gate, and/or threshold gate.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: January 9, 2024
    Assignee: KEPLER COMPUTING INC.
    Inventors: Noriyuki Sato, Tanay Gosavi, Niloy Mukherjee, Amrita Mathuriya, Rajeev Kumar Dokania, Sasikanth Manipatruni
  • Patent number: 11871584
    Abstract: A device includes, in a first region, a first conductive interconnect, an electrode structure on the first conductive interconnect, where the electrode structure includes a first conductive hydrogen barrier layer and a first conductive fill material. A memory device including a ferroelectric material or a paraelectric material is on the electrode structure. A second dielectric includes an amorphous, greater than 90% film density hydrogen barrier material laterally surrounds the memory device. A via electrode including a second conductive hydrogen barrier material is on at least a portion of the memory device. A second region includes a conductive interconnect structure embedded within a less than 90% film density material.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: January 9, 2024
    Assignee: KEPLER COMPUTING INC.
    Inventors: Noriyuki Sato, Niloy Mukherjee, Mauricio Manfrini, Tanay Gosavi, Rajeev Kumar Dokania, Somilkumar J. Rathi, Amrita Mathuriya, Sasikanth Manipatruni
  • Patent number: 11862517
    Abstract: A device includes, in a first region, a first conductive interconnect, an electrode structure on the first conductive interconnect, where the electrode structure includes a first conductive hydrogen barrier layer and a first conductive fill material. A memory device including a ferroelectric material or a paraelectric material is on the electrode structure. A second dielectric includes an amorphous, greater than 90% film density hydrogen barrier material laterally surrounds the memory device. A via electrode including a second conductive hydrogen barrier material is on at least a portion of the memory device. A second region includes a conductive interconnect structure embedded within a less than 90% film density material.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: January 2, 2024
    Assignee: KEPLER COMPUTING INC.
    Inventors: Noriyuki Sato, Niloy Mukherjee, Mauricio Manfrini, Tanay Gosavi, Rajeev Kumar Dokania, Somilkumar J. Rathi, Amrita Mathuriya, Sasikanth Manipatruni
  • Patent number: 11862219
    Abstract: A memory cell includes a write bit line, a read word line, a write transistor, and a read transistor. The write transistor is coupled between the write bit line and a first node. The read transistor is coupled to the write transistor by the first node. The read transistor includes a ferroelectric layer, a drain terminal of the read transistor is coupled to the read word line, and a source terminal of the read transistor is coupled to a second node. The write transistor is configured to set a stored data value of the memory cell by a write bit line signal that adjusts a polarization state of the read transistor. The polarization state corresponds to the stored data value.
    Type: Grant
    Filed: January 19, 2023
    Date of Patent: January 2, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Bo-Feng Young, Sai-Hooi Yeong, Chao-I Wu, Chih-Yu Chang, Yu-Ming Lin
  • Patent number: 11862730
    Abstract: Described is a thin film transistor which comprises: a dielectric comprising a dielectric material; a first structure adjacent to the dielectric, the first structure comprising a first material; a second structure adjacent to the first structure, the second structure comprising a second material wherein the second material is doped; a second dielectric adjacent to the second structure; a gate comprising a metal adjacent to the second dielectric; a spacer partially adjacent to the gate and the second dielectric; and a contact adjacent to the spacer.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: January 2, 2024
    Assignee: Intel Corporation
    Inventors: Abhishek A. Sharma, Sean T. Ma, Van H. Le, Jack T. Kavalieros, Gilbert Dewey
  • Patent number: 11854836
    Abstract: An semiconductor device includes a first dielectric layer, an etch stop layer, an interconnect structure, and a second dielectric layer. The etch stop layer is over the first dielectric layer. The interconnect structure includes a conductive via in the first dielectric layer and the etch stop layer, a conductive line over the conductive via, an intermediate conductive layer over the conductive line, and a conductive pillar over the intermediate conductive layer. The interconnect structure is electrically conductive at least from a top of the conductive pillar to a bottom of the conductive via. The second dielectric layer surrounds the conductive line, the intermediate conductive layer, and the conductive pillar, wherein a bottom of the second dielectric layer is lower than a top of the conductive line, and a top of the second dielectric layer is higher than the top of the conductive line.
    Type: Grant
    Filed: January 30, 2023
    Date of Patent: December 26, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Hsi-Wen Tien, Wei-Hao Liao, Chih-Wei Lu, Pin-Ren Dai, Chung-Ju Lee
  • Patent number: 11855128
    Abstract: A MIM structure and manufacturing method thereof are provided. The MIM structure includes a substrate and a metallization structure over the substrate. The metallization structure includes a bottom electrode layer, a dielectric layer on the bottom electrode layer, a ferroelectric layer on the dielectric layer, a top electrode layer on the ferroelectric layer, a first contact electrically coupled to the top electrode layer, and a second contact penetrating the dielectric layer and the ferroelectric layer, electrically coupled to a base portion of the bottom electrode layer. The bottom electrode layer includes the base portion and a plurality of protrusions, each of the protrusions is protruding from the base portion and leveled with a lower surface of the dielectric layer, each portion of the dielectric layer over the bottom electrode layer substantially have identical thicknesses.
    Type: Grant
    Filed: January 18, 2023
    Date of Patent: December 26, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Sai-Hooi Yeong, Chih-Yu Chang, Chun-Yen Peng, Chi On Chui
  • Patent number: 11856788
    Abstract: A method for fabricating a semiconductor device is provided. The method includes depositing a bottom electrode layer over a substrate; depositing a ferroelectric layer over the bottom electrode layer; depositing a first top electrode layer over the ferroelectric layer, wherein the first top electrode layer comprises a first metal; depositing a second top electrode layer over the first top electrode layer, wherein the second top electrode layer comprises a second metal, and a standard reduction potential of the first metal is greater than a standard reduction potential of the second metal; and removing portions of the second top electrode layer, the first top electrode layer, the ferroelectric layer, and the bottom electrode layer to form a memory stack, the memory stack comprising remaining portions of the second top electrode layer, the first top electrode layer, the ferroelectric layer, and the bottom electrode layer.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: December 26, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Tzu-Yu Chen, Sheng-Hung Shih, Fu-Chen Chang, Kuo-Chi Tu, Wen-Ting Chu, Alexander Kalnitsky
  • Patent number: 11856784
    Abstract: A semiconductor device includes a ferroelectric field-effect transistor (FeFET), wherein the FeFET includes a substrate; a source region in the substrate; a drain region in the substrate; and a gate structure over the substrate and between the source region and the drain region. The gate structure includes a gate dielectric layer over the substrate; a ferroelectric film over the gate dielectric layer; and a gate electrode over the ferroelectric film.
    Type: Grant
    Filed: June 29, 2022
    Date of Patent: December 26, 2023
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventor: Chih-Sheng Chang
  • Patent number: 11856789
    Abstract: A ferroelectric memory includes a first electrode, a second electrode opposite to the first electrode, a ferroelectric composite layer disposed between the first electrode and the second electrode, and a first insulating layer disposed on one side of the ferroelectric composite layer. The ferroelectric composite layer includes a first electrode layer, a second electrode layer, a ferroelectric layer and an antiferroelectric layer. The first electrode layer is opposite to the second electrode layer, and the ferroelectric layer and the antiferroelectric layer are disposed between the first electrode layer and the second electrode layer.
    Type: Grant
    Filed: July 6, 2021
    Date of Patent: December 26, 2023
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yu-De Lin, Po-Chun Yeh, Pei-Jer Tzeng
  • Patent number: 11856776
    Abstract: A method of forming a structure of 3D NAND memory device, including steps of forming a first stack layer on a substrate, forming a first channel hole extending through the first stack layer, forming a block layer on a surface of the first stack layer and the first channel hole, forming a sacrificial layer in the first channel hole, forming a second stack layer on the first stack layer and the sacrificial layer, performing a first etch process to form a second channel hole extending through the second stack layer and at least partially overlapping the first channel hole and to remove the sacrificial layer in the first channel hole, removing the block layer exposed from the second channel hole, and forming a function layer on a surface of the first channel hole and the second channel hole.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: December 26, 2023
    Assignee: Yangtze Memory Technologies Co., Ltd.
    Inventors: Li Hong Xiao, Li Xun Gu
  • Patent number: 11856787
    Abstract: Semiconductor devices and methods of manufacture are provided wherein a ferroelectric random access memory array is formed with bit line drivers and source line drivers formed below the ferroelectric random access memory array. A through via is formed using the same processes as the processes used to form individual memory cells within the ferroelectric random access memory array.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: December 26, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Meng-Han Lin, Sai-Hooi Yeong, Chi On Chui
  • Patent number: 11849589
    Abstract: A semiconductor structure and manufacturing method thereof are provided. The semiconductor structure includes a substrate having a first surface, a first conductive region and a second conductive region at the first surface, wherein the first conductive region is apart from the second conductive region, a gate feature, wherein a top surface of the gate feature is above the first conductive region, a stack unit coupled to the first conductive region, wherein the stack unit includes a plurality of ferroelectric layers stacking with a plurality of metal layers, wherein each of the plurality of ferroelectric layers separates adjacent two metal layers.
    Type: Grant
    Filed: June 24, 2022
    Date of Patent: December 19, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Han-Jong Chia, Yu-Ming Lin, Zhiqiang Wu, Sai-Hooi Yeong
  • Patent number: 11844293
    Abstract: A physical unclonable function device includes alternating regions of programable material and electrically conductive regions. The regions of programable material are configured to switch resistance upon receiving an electric pulse. An electric pulse applied between two outer electrically conductive regions of the alternating regions will switch the resistance of at least one region of programmable material. The alternating regions may include a plurality of the electrically conducting regions and a region of the programable material disposed between each of the plurality of electrically conductive regions. The resistance of each of the regions of programable material is selectively variable in at least a portion thereof as a result of the electric pulse flowing therethrough. The resistance value of the programable material region may be a readable value as a state of the device. The regions of programmable material may be formed of a phase change material or an oxide.
    Type: Grant
    Filed: October 4, 2021
    Date of Patent: December 12, 2023
    Assignee: International Business Machines Corporation
    Inventors: Guy M. Cohen, Takashi Ando, Nanbo Gong, Franco Stellari
  • Patent number: 11843031
    Abstract: A method is presented for forming a nanosheet device. The method includes forming nanosheets stacks over a substrate, the nanosheet stacks separated by shallow trench isolation (STI) regions, forming a first hardmask material over the nanosheet stacks, depositing a sacrificial gate, recessing the sacrificial gate such that recesses are defined adjacent the first hardmask material, wherein a top surface of the sacrificial gate is below a top surface of the first hardmask material, forming a second hardmask material in the recesses, defining a uniform gate length in both the first and second hardmask materials, and selectively trimming the first hardmask material such that a gate length over the nanosheet stacks is less than a gate length over the STI regions.
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: December 12, 2023
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Chen Zhang, Kangguo Cheng, Wenyu Xu, Ruilong Xie
  • Patent number: 11844225
    Abstract: A device includes, in a first region, a first conductive interconnect, an electrode structure on the first conductive interconnect, where the electrode structure includes a first conductive hydrogen barrier layer and a first conductive fill material. A memory device including a ferroelectric material or a paraelectric material is on the electrode structure. A second dielectric includes an amorphous, greater than 90% film density hydrogen barrier material laterally surrounds the memory device. A via electrode including a second conductive hydrogen barrier material is on at least a portion of the memory device. A second region includes a conductive interconnect structure embedded within a less than 90% film density material.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: December 12, 2023
    Assignee: KEPLER COMPUTING INC.
    Inventors: Noriyuki Sato, Niloy Mukherjee, Mauricio Manfrini, Tanay Gosavi, Rajeev Kumar Dokania, Somilkumar J. Rathi, Amrita Mathuriya, Sasikanth Manipatruni