Patents by Inventor David K. Lam

David K. Lam 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: 11063756
    Abstract: Methods, systems and devices for using different encryption keys written into interconnects of different functional blocks in different integrated circuits to securely encrypt and authenticate firmware, data, instructions and other messages transmitted among said functional blocks; and methods, systems and devices to obfuscate encryption keys to significantly increase the time and resources required to compromise those keys, ensuring encrypted data is only decrypted by authorized functional blocks, applications or users. Unique keys, small enough not to impact substrate surface area available for other device functions, can be written by charged particle beams such that multiple (or each of) functional blocks has a corresponding key unique within an IC and across a line of ICs and so that access to said keys is as limited (or nonexistent) as desired.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: July 13, 2021
    Inventors: Kevin M. Monahan, David K. Lam, Theodore A. Prescop
  • Patent number: 11037756
    Abstract: Methods, tools and systems for patterning of substrates using charged particle beams without photomasks, without a resist layer, using multiple different processes (different chemistry processes and/or different ones of material deposition, removal and/or modification) in the same vacuum space, wherein said processes are performed independently (without cross-interference) and simultaneously. As a result, the number of process steps can be reduced and some lithography steps can be eliminated, reducing manufacturing cycle time and increasing yield by lowering the probability of defect introduction. Also, because such processes are resist-less, layer-to-layer registration and other column control processes can be performed by imaging previous-layer features local to (or in contact with) features to be written in a next layer as designated by the design layout database.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: June 15, 2021
    Inventors: David K. Lam, Kevin M. Monahan, Michael C. Smayling, Theodore A. Prescop
  • Patent number: 10978303
    Abstract: Methods, systems and devices for using charged particle beams (CPBs) to write different die-specific, non-volatile, electronically readable data to different dies on a substrate. CPBs can fully write die-specific data within the chip interconnect structure during the device fabrication process, at high resolution and within a small area, allowing one or multiple usefully-sized values to be securely written to service device functions. CPBs can write die-specific data in areas readable or unreadable through a (or any) communications bus. Die-specific data can be used for, e.g.: encryption keys; communications addresses; manufacturing information (including die identification numbers); random number generator improvements; or single, nested, or compartmentalized security codes. Die-specific data and locations for writing die-specific data can be kept in encrypted form when not being written to the substrate to conditionally or permanently prevent any knowledge of said data and locations.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: April 13, 2021
    Inventors: Michael C. Smayling, David K. Lam
  • Patent number: 10734192
    Abstract: Methods, tools and systems for patterning of substrates using charged particle beams without photomasks, without a resist layer, using multiple different processes (different chemistry processes and/or different ones of material deposition, removal and/or modification) in the same vacuum space, wherein said processes are performed independently (without cross-interference) and simultaneously. As a result, the number of process steps can be reduced and some lithography steps can be eliminated, reducing manufacturing cycle time and increasing yield by lowering the probability of defect introduction. Also, because such processes are resist-less, layer-to-layer registration and other column control processes can be performed by imaging previous-layer features local to (or in contact with) features to be written in a next layer as designated by the design layout database.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: August 4, 2020
    Inventors: David K. Lam, Kevin M. Monahan, Michael C. Smayling, Theodore A. Prescop
  • Patent number: 10659229
    Abstract: Methods, systems and devices for using charged particle beams (CPBs) to write different die-specific, non-volatile, electronically readable data to different dies on a substrate. CPBs can fully write die-specific data within the chip interconnect structure during the device fabrication process, at high resolution and within a small area, allowing one or multiple usefully-sized values to be securely written to service device functions. CPBs can write die-specific data in areas readable or unreadable through a (or any) communications bus. Die-specific data can be used for, e.g.: encryption keys; communications addresses; manufacturing information (including die identification numbers); random number generator improvements; or single, nested, or compartmentalized security codes. Die-specific data and locations for writing die-specific data can be kept in encrypted form when not being written to the substrate to conditionally or permanently prevent any knowledge of said data and locations.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: May 19, 2020
    Inventors: Michael C. Smayling, David K. Lam, Theodore A. Prescop, Kevin M. Monahan
  • Patent number: 10658153
    Abstract: Methods, tools and systems for patterning of substrates using charged particle beams without photomasks, without a resist layer, using multiple different processes (different chemistry processes and/or different ones of material deposition, removal and/or modification) in the same vacuum space, wherein said processes are performed independently (without cross-interference) and simultaneously. As a result, the number of process steps can be reduced and some lithography steps can be eliminated, reducing manufacturing cycle time and increasing yield by lowering the probability of defect introduction. Also, because such processes are resist-less, layer-to-layer registration and other column control processes can be performed by imaging previous-layer features local to (or in contact with) features to be written in a next layer as designated by the design layout database.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: May 19, 2020
    Inventors: David K. Lam, Kevin M. Monahan, Michael C. Smayling, Theodore A. Prescop
  • Patent number: 10607845
    Abstract: Methods and systems for direct atomic layer etching and deposition on or in a substrate using charged particle beams. Electrostatically-deflected charged particle beam columns can be targeted in direct dependence on the design layout database to perform atomic layer etch and atomic layer deposition, expressing pattern with selected 3D-structure. Reducing the number of process steps in patterned atomic layer etch and deposition reduces manufacturing cycle time and increases yield by lowering the probability of defect introduction. Local gas and photon injectors and detectors are local to corresponding columns, and support superior, highly-configurable process execution and control.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: March 31, 2020
    Inventors: Kevin M. Monahan, Theodore A. Prescop, Michael C. Smayling, David K. Lam
  • Patent number: 10523433
    Abstract: Methods, systems and devices for using different encryption keys written into interconnects of different functional blocks in different integrated circuits to securely encrypt and authenticate firmware, data, instructions and other messages transmitted among said functional blocks; and methods, systems and devices to obfuscate encryption keys to significantly increase the time and resources required to compromise those keys, ensuring encrypted data is only decrypted by authorized functional blocks, applications or users. Unique keys, small enough not to impact substrate surface area available for other device functions, can be written by charged particle beams such that multiple (or each of) functional blocks has a corresponding key unique within an IC and across a line of ICs and so that access to said keys is as limited (or nonexistent) as desired.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: December 31, 2019
    Inventors: Kevin M. Monahan, David K. Lam, Theodore A. Prescop
  • Patent number: 10341108
    Abstract: Methods, systems and devices for using charged particle beams (CPBs) to write different die-specific, non-volatile, electronically readable data to different dies on a substrate. CPBs can fully write die-specific data within the chip interconnect structure during the device fabrication process, at high resolution and within a small area, allowing one or multiple usefully-sized values to be securely written to service device functions. CPBs can write die-specific data in areas readable or unreadable through a (or any) communications bus. Die-specific data can be used for, e.g.: encryption keys; communications addresses; manufacturing information (including die identification numbers); random number generator improvements; or single, nested, or compartmentalized security codes. Die-specific data and locations for writing die-specific data can be kept in encrypted form when not being written to the substrate to conditionally or permanently prevent any knowledge of said data and locations.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: July 2, 2019
    Inventors: Michael C. Smayling, David K. Lam, Theodore A. Prescop, Kevin M. Monahan
  • Patent number: 10312091
    Abstract: Methods, systems and devices for using charged particle beams (CPBs) to write different die-specific, non-volatile, electronically readable data to different dies on a substrate. CPBs can fully write die-specific data within the chip interconnect structure during the device fabrication process, at high resolution and within a small area, allowing one or multiple usefully-sized values to be securely written to service device functions. CPBs can write die-specific data in areas readable or unreadable through a (or any) communications bus. Die-specific data can be used for, e.g.: encryption keys; communications addresses; manufacturing information (including die identification numbers); random number generator improvements; or single, nested, or compartmentalized security codes. Die-specific data and locations for writing die-specific data can be kept in encrypted form when not being written to the substrate to conditionally or permanently prevent any knowledge of said data and locations.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: June 4, 2019
    Inventors: Michael C. Smayling, David K. Lam
  • Patent number: 10205642
    Abstract: A system and method for management of network monitoring information includes a non-transient memory and one or more processors coupled to the non-transient memory and configured to read instructions from the non-transient memory to cause the information handling system to perform operations, The operations include collecting real-time network monitoring information from one or more network switching units, storing the collected real-time network monitoring information in a data storage system using a first column family, periodically aggregating the collected real-time network monitoring information to generate corresponding history information, storing the aggregated history information in the data storage system using a second column family different from the first column family, retrieving information from the data storage system based on one or more first queries, the stored real-time network monitoring information, and the stored aggregated history information, and providing the retrieved information fo
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: February 12, 2019
    Assignee: DELL PRODUCTS L.P.
    Inventors: YuLing Chen, David K. Lam, Bingjun Li, Weijun Li, Julie Shur-Meih Hsu
  • Patent number: 10026589
    Abstract: The present application discloses methods, systems and devices for using charged particle beam tools to pattern and inspect a substrate. The inventors have discovered that it is highly advantageous to use patterns generated using the Hadamard transform as alignment and registration marks (Hadamard targets) for multiple-column charged particle beam substrate processing and inspection tools. Hadamard targets can be written to a substrate using charged particle beams performing, for example, resist-based lithography or resist-less direct processing. High-order Hadamard targets can also be patterned and imaged to obtain superior column performance metrics for applications such as super-rapid beam calibration DOE, column matching, and column performance tracking.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: July 17, 2018
    Inventors: Kevin M. Monahan, Michael C. Smayling, Theodore A. Prescop, David K. Lam
  • Patent number: 10020200
    Abstract: Methods and systems for direct atomic layer etching and deposition on or in a substrate using charged particle beams. Electrostatically-deflected charged particle beam columns can be targeted in direct dependence on the design layout database to perform atomic layer etch and atomic layer deposition, expressing pattern with selected 3D-structure. Reducing the number of process steps in patterned atomic layer etch and deposition reduces manufacturing cycle time and increases yield by lowering the probability of defect introduction. Local gas and photon injectors and detectors are local to corresponding columns, and support superior, highly-configurable process execution and control.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: July 10, 2018
    Inventors: Kevin M. Monahan, Theodore A. Prescop, Michael C. Smayling, David K. Lam
  • Patent number: 10020166
    Abstract: The present application discloses methods, systems and devices for using charged particle beam tools to pattern and inspect a substrate. The inventors have discovered that it is highly advantageous to use patterns generated using the Hadamard transform as alignment and registration marks (Hadamard targets) for multiple-column charged particle beam substrate processing and inspection tools. Hadamard targets can be written to a substrate using charged particle beams performing, for example, resist-based lithography or resist-less direct processing. High-order Hadamard targets can also be patterned and imaged to obtain superior column performance metrics for applications such as super-rapid beam calibration DOE, column matching, and column performance tracking.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: July 10, 2018
    Inventors: Kevin M. Monahan, Michael C. Smayling, Theodore A. Prescop, David K. Lam
  • Patent number: 9881817
    Abstract: Methods, tools and systems for patterning of substrates using charged particle beams without photomasks, without a resist layer, using multiple different processes (different chemistry processes and/or different ones of material deposition, removal and/or modification) in the same vacuum space, wherein said processes are performed independently (without cross-interference) and simultaneously. As a result, the number of process steps can be reduced and some lithography steps can be eliminated, reducing manufacturing cycle time and increasing yield by lowering the probability of defect introduction. Also, because such processes are resist-less, layer-to-layer registration and other column control processes can be performed by imaging previous-layer features local to (or in contact with) features to be written in a next layer as designated by the design layout database.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: January 30, 2018
    Inventors: David K. Lam, Kevin M. Monahan, Michael C. Smayling, Theodore A. Prescop
  • Patent number: 9822443
    Abstract: Methods, devices and systems for targeted, maskless modification of material on or in a substrate using charged particle beams. Electrostatically-deflected charged particle beam columns can be targeted in direct dependence on the design layout database to perform direct and knock-on ion implantation, producing patterned material modifications with selected chemical and 3D-structural profiles. The number of required process steps is reduced, reducing manufacturing cycle time and increasing yield by lowering the probability of defect introduction. Local gas and photon injectors and detectors are local to corresponding individual columns, and support superior, highly-configurable process execution and control. Targeted implantation can be used to prepare the substrate for patterned blanket etch; patterned ALD can be used to prepare the substrate for patterned blanket deposition; neither process requiring photomasks or resist.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: November 21, 2017
    Inventors: Michael C. Smayling, Kevin M. Monahan, David K. Lam, Theodore A. Prescop
  • Patent number: 9824859
    Abstract: Methods, devices and systems for targeted, maskless modification of material on or in a substrate using charged particle beams. Electrostatically-deflected charged particle beam columns can be targeted in direct dependence on the design layout database to perform direct and knock-on ion implantation, producing patterned material modifications with selected chemical and 3D-structural profiles. The number of required process steps is reduced, reducing manufacturing cycle time and increasing yield by lowering the probability of defect introduction. Local gas and photon injectors and detectors are local to corresponding individual columns, and support superior, highly-configurable process execution and control. Targeted implantation can be used to prepare the substrate for patterned blanket etch; patterned ALD can be used to prepare the substrate for patterned blanket deposition; neither process requiring photomasks or resist.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: November 21, 2017
    Inventors: Michael C. Smayling, Kevin M. Monahan, David K. Lam, Theodore A. Prescop
  • Patent number: 9673114
    Abstract: Methods, devices and systems for patterning of substrates using charged particle beams without photomasks and without a resist layer. Material can be removed from a substrate, as directed by a design layout database, localized to positions targeted by multiple, matched charged particle beams. Reducing the number of process steps, and eliminating lithography steps, in localized material removal has the dual benefit of reducing manufacturing cycle time and increasing yield by lowering the probability of defect introduction. Furthermore, highly localized, precision material removal allows for controlled variation of removal rate and enables creation of 3D structures or profiles. Local gas injectors and detectors, and local photon injectors and detectors, are local to corresponding ones of the columns, and can be used to facilitate rapid, accurate, targeted substrate processing.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: June 6, 2017
    Assignee: Multibeam Corporation
    Inventors: David K. Lam, Kevin M. Monahan, Michael C. Smayling, Theodore A. Prescop
  • Patent number: 9620332
    Abstract: The present application discloses methods, systems and devices for using charged particle beam tools to inspect and perform lithography on a substrate using a combination of vectoring to move a beam to features to be imaged, and raster scanning to obtain an image of the feature(s). The inventors have discovered that it is highly advantageous to use an extra step, a fast raster scan to image the substrate at a lower resolution, to determine which features receive priority for inspection; this extra step can reduce total inspection time, enhance inspection results, and improve beam alignment and manufacturing yield. Using multiple beam-producing columns, with multiple control computers local to the columns, provides various synergies. Preferably, miniature, non-magnetic, electrostatically-driven columns are used.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: April 11, 2017
    Assignee: Multibeam Corporation
    Inventors: David K. Lam, Kevin M. Monahan, Enden David Liu, Cong Tran, Theodore A. Prescop
  • Patent number: 9595419
    Abstract: The present application discloses methods, systems and devices for using charged particle beam tools to pattern and inspect a substrate. The inventors have discovered that it is highly advantageous to use patterns generated using the Hadamard transform as alignment and registration marks (Hadamard targets) for multiple-column charged particle beam lithography and inspection tools. Further, superior substrate alignment and layer-to-layer pattern registration accuracy can be achieved using Hadamard targets patterned in edge-proximal portions of the substrate that are typically stripped bare of resist prior to lithography, in addition to Hadamard targets patterned in inner substrate portions. High-order Hadamard targets can also be patterned and imaged to obtain superior column performance metrics for applications such as super-rapid beam calibration DOE, column matching, and column performance tracking. Superior alignment and registration, and column parameter optimization, allow significant yield gains.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: March 14, 2017
    Assignee: Multibeam Corporation
    Inventors: Kevin M. Monahan, Michael C. Smayling, Theodore A. Prescop, David K. Lam