Patents by Inventor Tsai-Wei Wu

Tsai-Wei Wu 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).

  • Patent number: 11882706
    Abstract: A memory array is provided that includes a plurality of word lines and a plurality of bit lines, and a plurality of memory cells each including a corresponding magnetic memory element coupled in series with a corresponding selector element. Each memory cell is coupled between one of the word lines and one of the bit lines. Each memory cell has a half-pitch F, and comprises an area between 2F2 and 4F2.
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: January 23, 2024
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Lei Wan, Tsai-Wei Wu, Jordan A. Katine
  • Publication number: 20230409462
    Abstract: A method for system profiling and controlling and a computer system performing the same are provided. In the method, an operating system is operated after the computer system is booted, in which a profiling-controlling system is operated. When the operating system loads and executes a system profiling-controlling program, the profiling-controlling system that simultaneously operates a profiling routine and a controlling routine is initiated. The profiling routine is used to retrieve system kernel data that is generated during operation of the operating system and analyze the system kernel data through a kernel tracing tool. When it is determined that controlling is required, the profiling routine notifies the controlling routine. The controlling routine controls operating parameters of the operating system in real time according to an analysis result generated by the profiling routine.
    Type: Application
    Filed: May 25, 2023
    Publication date: December 21, 2023
    Inventors: YI-KUAN WU, SHENG-KAI HUNG, TSAI-WEI WU, TSAI-CHIN CHENG, YU-KUEN WU
  • Publication number: 20230309319
    Abstract: A device structure includes first electrically conductive lines, second electrically conductive lines that are vertically spaced apart from the first electrically conductive lines, a two-dimensional array of magnetic tunnel junctions located between the first electrically conductive lines and the second electrically conductive lines, and a two-dimensional array of selector elements located in series with the two-dimensional array of magnetic tunnel junctions. Each of the magnetic tunnel junctions includes a respective reference layer, a respective nonmagnetic tunnel barrier layer, and a respective free layer, and has a respective pair of first tapered planar sidewalls laterally extending along a first horizontal direction and a respective pair of second tapered planar sidewalls laterally extending along a second horizontal direction.
    Type: Application
    Filed: December 19, 2022
    Publication date: September 28, 2023
    Inventors: Jordan KATINE, Lei WAN, Tsai-Wei WU, Sanjay MEHTA
  • Publication number: 20230300031
    Abstract: A method for configuring network traffic and a computer system are provided. The computer system includes a processing unit and a network module that is operated based on a bandwidth configuration. The processing unit operates an operating system that executes a profiling-controlling program. The method is performed in the operating system. In the method, the operating system initiates a system kernel, and the profiling-controlling program can obtain kernel operation information from the system kernel, so that information of multiple applications operating in a foreground process and a background process of the operating system can be retrieved. A priority order is decided, and a network bandwidth configuration is formed and written into traffic control instructions of the system kernel or a driver of the network module. The network bandwidth configuration allows the operating system to perform a traffic configuration on each of the applications.
    Type: Application
    Filed: March 9, 2023
    Publication date: September 21, 2023
    Inventors: TSAI-WEI WU, HSU-TUNG WANG, YI-KUAN WU, MING-CHIEH LI, MENG-JU LIN
  • Patent number: 11631716
    Abstract: A memory device includes a cross-point array of spin-torque transfer MRAM cells. First rail structures laterally extend along a first horizontal direction. Each of the first rail structures includes a vertical stack including, from bottom to top, a first electrically conductive line, a reference layer having a fixed magnetization direction, and a tunnel barrier layer. Second rail structures laterally extend along a second horizontal direction. Each of the second rail structures includes a second electrically conductive line that overlies the first rail structures. A two-dimensional array of pillar structures is located between a respective one of the first rail structures and a respective one of the second rail structures. Each of the pillar structures includes a free layer having energetically stable magnetization orientations that are parallel or antiparallel to the fixed magnetization direction.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: April 18, 2023
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Lei Wan, Jordan Katine, Tsai-Wei Wu
  • Publication number: 20220223649
    Abstract: A memory device includes a cross-point array of magnetoresistive memory cells. Each magnetoresistive memory cell includes a vertical stack of a selector-containing pillar structure and a magnetic tunnel junction pillar structure. The lateral spacing between neighboring pairs of magnetoresistive memory cells may be smaller along a first horizontal direction than along a second horizontal direction, and a dielectric spacer or a tapered etch process may be used to provide a pattern of an etch mask for patterning first electrically conductive lines underneath the magnetoresistive memory cells. Alternatively, a resist layer may be employed to pattern first electrically conductive lines underneath the cross-point array. Alternatively, a protective dielectric liner may be provided to protect selector-containing pillar structures during formation of the magnetic tunnel junction pillar structures.
    Type: Application
    Filed: March 14, 2022
    Publication date: July 14, 2022
    Inventors: Lei WAN, Jordan KATINE, Tsai-Wei WU
  • Publication number: 20220199686
    Abstract: A memory device includes a cross-point array of magnetoresistive memory cells. Each magnetoresistive memory cell includes a vertical stack of a selector-containing pillar structure and a magnetic tunnel junction pillar structure. The lateral spacing between neighboring pairs of magnetoresistive memory cells may be smaller along a first horizontal direction than along a second horizontal direction, and a dielectric spacer or a tapered etch process may be used to provide a pattern of an etch mask for patterning first electrically conductive lines underneath the magnetoresistive memory cells. Alternatively, a resist layer may be employed to pattern first electrically conductive lines underneath the cross-point array. Alternatively, a protective dielectric liner may be provided to protect selector-containing pillar structures during formation of the magnetic tunnel junction pillar structures.
    Type: Application
    Filed: March 14, 2022
    Publication date: June 23, 2022
    Inventors: Lei WAN, Jordan KATINE, Tsai-Wei WU, Chu-Chen FU
  • Patent number: 11332431
    Abstract: A device for manufacturing dimethyl carbonate including a reaction section and a separation section is provided. The reaction section includes a first distillation column, a methanol supply device, a carbon dioxide supply device, a dehydrating agent supply device, and a side reactor. The methanol supply device is connected to the first distillation column. The carbon dioxide supply device is connected to the first distillation column. The dehydrating agent supply device is connected to the first distillation column. A feed nozzle of the side reactor is connected to a gas outlet of a top of the first distillation column. A discharge nozzle of the side reactor is connected to a recycle nozzle of the first distillation column. A catalyst is disposed in the side reactor. The separation section includes a second distillation column. The second distillation column is connected to a liquid outlet of a bottom of the first distillation column.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: May 17, 2022
    Assignee: National Tsing Hua University
    Inventors: Tsai-Wei Wu, I-Lung Chien, San-Jang Wang, David S. H. Wong, En-Ko Lee, Shi-Shang Jang
  • Publication number: 20220005867
    Abstract: A memory device includes a cross-point array of spin-torque transfer MRAM cells. First rail structures laterally extend along a first horizontal direction. Each of the first rail structures includes a vertical stack including, from bottom to top, a first electrically conductive line, a reference layer having a fixed magnetization direction, and a tunnel barrier layer. Second rail structures laterally extend along a second horizontal direction. Each of the second rail structures includes a second electrically conductive line that overlies the first rail structures. A two-dimensional array of pillar structures is located between a respective one of the first rail structures and a respective one of the second rail structures. Each of the pillar structures includes a free layer having energetically stable magnetization orientations that are parallel or antiparallel to the fixed magnetization direction.
    Type: Application
    Filed: September 17, 2021
    Publication date: January 6, 2022
    Inventors: Lei WAN, Jordan KATINE, Tsai-Wei WU
  • Publication number: 20210323905
    Abstract: A device for manufacturing dimethyl carbonate including a reaction section and a separation section is provided. The reaction section includes a first distillation column, a methanol supply device, a carbon dioxide supply device, a dehydrating agent supply device, and a side reactor. The methanol supply device is connected to the first distillation column. The carbon dioxide supply device is connected to the first distillation column. The dehydrating agent supply device is connected to the first distillation column. A feed nozzle of the side reactor is connected to a gas outlet of a top of the first distillation column. A discharge nozzle of the side reactor is connected to a recycle nozzle of the first distillation column. A catalyst is disposed in the side reactor. The separation section includes a second distillation column. The second distillation column is connected to a liquid outlet of a bottom of the first distillation column.
    Type: Application
    Filed: June 9, 2020
    Publication date: October 21, 2021
    Applicant: National Tsing Hua University
    Inventors: Tsai-Wei Wu, I-Lung Chien, San-Jang Wang, David S. H. Wong, En-Ko Lee, Shi-Shang Jang
  • Patent number: 11152425
    Abstract: A memory device includes a cross-point array of spin-torque transfer MRAM cells. First rail structures laterally extend along a first horizontal direction. Each of the first rail structures includes a vertical stack including, from bottom to top, a first electrically conductive line, a reference layer having a fixed magnetization direction, and a tunnel barrier layer. Second rail structures laterally extend along a second horizontal direction. Each of the second rail structures includes a second electrically conductive line that overlies the first rail structures. A two-dimensional array of pillar structures is located between a respective one of the first rail structures and a respective one of the second rail structures. Each of the pillar structures includes a free layer having energetically stable magnetization orientations that are parallel or antiparallel to the fixed magnetization direction.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: October 19, 2021
    Assignee: Western Digital Technologies, Inc.
    Inventors: Lei Wan, Jordan Katine, Tsai-Wei Wu
  • Publication number: 20210313392
    Abstract: A memory array is provided that includes a plurality of word lines and a plurality of bit lines, and a plurality of memory cells each including a corresponding magnetic memory element coupled in series with a corresponding selector element. Each memory cell is coupled between one of the word lines and one of the bit lines. Each memory cell has a half-pitch F, and comprises an area between 2F2 and 4F2.
    Type: Application
    Filed: June 22, 2021
    Publication date: October 7, 2021
    Applicant: SanDisk Technologies LLC
    Inventors: Lei Wan, Tsai-Wei Wu, Jordan A. Katine
  • Patent number: 11056534
    Abstract: A memory array is provided that includes a first memory level having a plurality of memory cells each including a corresponding magnetic memory element coupled in series with a corresponding selector element, and a plurality of vias, each of the vias coupled in series with a corresponding one of the memory cells.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: July 6, 2021
    Assignee: SanDisk Technologies LLC
    Inventors: Lei Wan, Tsai-Wei Wu, Jordan A. Katine
  • Publication number: 20210126052
    Abstract: A memory device includes a cross-point array of spin-torque transfer MRAM cells. First rail structures laterally extend along a first horizontal direction. Each of the first rail structures includes a vertical stack including, from bottom to top, a first electrically conductive line, a reference layer having a fixed magnetization direction, and a tunnel barrier layer. Second rail structures laterally extend along a second horizontal direction. Each of the second rail structures includes a second electrically conductive line that overlies the first rail structures. A two-dimensional array of pillar structures is located between a respective one of the first rail structures and a respective one of the second rail structures. Each of the pillar structures includes a free layer having energetically stable magnetization orientations that are parallel or antiparallel to the fixed magnetization direction.
    Type: Application
    Filed: October 29, 2019
    Publication date: April 29, 2021
    Inventors: Lei WAN, Jordan KATINE, Tsai-Wei WU
  • Publication number: 20200411589
    Abstract: A memory array is provided that includes a first memory level having a plurality of memory cells each including a corresponding magnetic memory element coupled in series with a corresponding selector element, and a plurality of vias, each of the vias coupled in series with a corresponding one of the memory cells.
    Type: Application
    Filed: July 2, 2019
    Publication date: December 31, 2020
    Applicant: SanDisk Technologies LLC
    Inventors: Lei Wan, Tsai-Wei Wu, Jordan A. Katine
  • Patent number: 9464348
    Abstract: A method for making a bit-patterned media (BPM) magnetic recording disk by etching the recording layer using a patterned hard mask layer uses glancing angle deposition (GLAD) of additional hard mask material as a capping layer onto the tops of the patterned hard mask pillars while the disk is rotated about an axis orthogonal to the plane of the disk. In one embodiment the capping layer is deposited after the pillars have been only partially eroded during a partial ion-milling of the recording layer. Ion-milling is then again performed to remove the remaining recording layer material. In another embodiment, before ion-milling of the recording layer, the capping layer is deposited onto the tops of the un-eroded hard mask pillars. This increases the lateral dimension of the hard mask pillars so that after ion-milling of the recording layer, the magnetic islands have an increased lateral dimension.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: October 11, 2016
    Assignee: HGST Netherlands B.V.
    Inventors: Hitesh Arora, Jean-Marc L. Beaujour, Zuwei Liu, Tsai-Wei Wu
  • Publication number: 20160064026
    Abstract: A method for making a bit-patterned media (BPM) magnetic recording disk by etching the recording layer using a patterned hard mask layer uses glancing angle deposition (GLAD) of additional hard mask material as a capping layer onto the tops of the patterned hard mask pillars while the disk is rotated about an axis orthogonal to the plane of the disk. In one embodiment the capping layer is deposited after the pillars have been only partially eroded during a partial ion-milling of the recording layer. Ion-milling is then again performed to remove the remaining recording layer material. In another embodiment, before ion-milling of the recording layer, the capping layer is deposited onto the tops of the un-eroded hard mask pillars. This increases the lateral dimension of the hard mask pillars so that after ion-milling of the recording layer, the magnetic islands have an increased lateral dimension.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 3, 2016
    Inventors: Hitesh Arora, Jean-Marc L. Beaujour, Zuwei Liu, Tsai-Wei Wu
  • Patent number: 9266258
    Abstract: A system, method and apparatus for manufacturing high density magnetic media is disclosed. A flexible mold having a very low modulus of less than about 4 GPa is made on a rigid support. The mold nano-imprints a resist material on disks for hard disk drives. The flexible mold may comprise a perfluoropolyether with urethane acrylate end groups with a low surface adhesion from which the cured resist is easily released.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: February 23, 2016
    Assignee: HGST NETHERLANDS B.V.
    Inventors: Clayton P. Henderson, Tsai-Wei Wu, Xing-Cai Guo, Thomas Edward Karis, Jeffrey S. Lille
  • Patent number: 9105295
    Abstract: A method for patterning a substrate is disclosed. Depressions are patterned into a resist layer over a substrate. A mask layer is deposited over the resist layer at least partially filling the depressions. The mask layer is etched to expose a top surface of the resist layer and leaving at least a portion of the mask layer in the depressions of the resist layer, wherein the mask layer over said top surface of the resist layer is etched at a faster rate than said mask layer in the depressions of the resist layer. Exposed portions of the resist layer are removed to expose portions of the substrate. Exposed portions of the substrate are etched.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: August 11, 2015
    Assignee: HGST Netherlands B.V.
    Inventors: Thomas Albrecht, He Gao, Kanaiyalal Patel, Tsai-wei Wu
  • Publication number: 20150044321
    Abstract: A system, method and apparatus for manufacturing high density magnetic media is disclosed. A flexible mold having a very low modulus of less than about 4 GPa is made on a rigid support. The mold nano-imprints a resist material on disks for hard disk drives. The flexible mold may comprise a perfluoropolyether with urethane acrylate end groups with a low surface adhesion from which the cured resist is easily released.
    Type: Application
    Filed: October 28, 2014
    Publication date: February 12, 2015
    Inventors: Clayton P. Henderson, Tsai-Wei Wu, Xing-Cai GUO, Thomas Edward KARIS, Jeffrey S. LILLE