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: 9556521
    Abstract: Methods, devices and systems for patterning of substrates using charged particle beams without photomasks and without a resist layer. Material can be deposited onto a substrate, as directed by a design layout database, localized to positions targeted by multiple, matched charged particle beam columns. Reducing the number of process steps, and eliminating lithography steps, in localized material addition has the dual benefit of reducing manufacturing cycle time and increasing yield by lowering the probability of defect introduction. Furthermore, highly localized, precision material deposition allows for controlled variation of deposition rate and enables creation of 3D structures. 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, highly configurable substrate processing, advantageously using large arrays of said beam columns.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: January 31, 2017
    Assignee: Multibeam Corporation
    Inventors: Theodore A. Prescop, Kevin M. Monahan, David K. Lam, Michael C. Smayling
  • Patent number: 9478395
    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 26, 2014
    Date of Patent: October 25, 2016
    Assignee: Multibeam Corporation
    Inventors: Kevin M. Monahan, Michael C. Smayling, Theodore A. Prescop, David K. Lam
  • Patent number: 9466463
    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: November 20, 2013
    Date of Patent: October 11, 2016
    Assignee: Multibeam Corporation
    Inventors: David K. Lam, Kevin M. Monahan, Enden David Liu, Cong Tran, Theodore A. Prescop
  • Patent number: 9466464
    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 23, 2015
    Date of Patent: October 11, 2016
    Assignee: Multibeam Corporation
    Inventors: David K. Lam, Kevin M. Monahan, Michael C. Smayling, Theodore A. Prescop
  • Patent number: 9453281
    Abstract: Methods, devices and systems for patterning of substrates using charged particle beams without photomasks and without a resist layer. Material can be deposited onto a substrate, as directed by a design layout database, localized to positions targeted by multiple, matched charged particle beam columns. Reducing the number of process steps, and eliminating lithography steps, in localized material addition has the dual benefit of reducing manufacturing cycle time and increasing yield by lowering the probability of defect introduction. Furthermore, highly localized, precision material deposition allows for controlled variation of deposition rate and enables creation of 3D structures. 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, highly configurable substrate processing, advantageously using large arrays of said beam columns.
    Type: Grant
    Filed: June 21, 2015
    Date of Patent: September 27, 2016
    Assignee: Multibeam Corporation
    Inventors: Theodore A. Prescop, Kevin M. Monahan, David K. Lam, Michael C. Smayling
  • Publication number: 20160080222
    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: Application
    Filed: November 24, 2015
    Publication date: March 17, 2016
    Inventors: YuLing CHEN, David K. LAM, Bingjun LI, Weijun LI, Julie Shur-Meih HSU
  • Patent number: 9207539
    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 write and inspection tools that share the same or substantially the same stage and the same or substantially the same designs for respective arrays of multiple charged particle beam columns, and that access the same design layout database to target and pattern or inspect features. By using design-matched charged particle beam tools, correlation of defectivity is preserved between inspection imaging and the design layout database. As a result, image-based defect identification and maskless design correction, of random and systematic errors, can be performed directly in the design layout database, enabling a fast yield ramp.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: December 8, 2015
    Assignee: Multibeam Corporation
    Inventors: David K. Lam, Kevin M. Monahan, Theodore A. Prescop, Cong Tran
  • Patent number: 9210053
    Abstract: A system and method for management of network monitoring information includes a data collector for collecting real-time network information from network switching units, an aggregator for periodically aggregating the collected real-time network information and generating corresponding history information, a preprocessor for periodically determining results for first queries based on the collected real-time network information and the history information, a data storage system, and a data retriever for retrieving information from the data storage system. The data storage system stores the collected real-time network information, the aggregated history information, and the preprocessed results of the first queries. The data storage system also periodically purges the stored real-time information based on a first time-to-live value and the stored history information based on a second time-to-live value.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: December 8, 2015
    Assignee: DELL PRODUCTS L.P.
    Inventors: YuLing Chen, David K. Lam, Bingjun Li, Weijun Li, Julie Shur-Meih Hsu
  • Patent number: 9184027
    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 write and inspection tools that share the same or substantially the same stage and the same or substantially the same designs for respective arrays of multiple charged particle beam columns, and that access the same design layout database to target and pattern or inspect features. By using design-matched charged particle beam tools, correlation of defectivity is preserved between inspection imaging and the design layout database. As a result, image-based defect identification and maskless design correction, of random and systematic errors, can be performed directly in the design layout database, enabling a fast yield ramp.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: November 10, 2015
    Assignee: Multibeam Corporation
    Inventors: David K. Lam, Kevin M. Monahan, Theodore A. Prescop, Cong Tran
  • Patent number: 8999628
    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 write and inspection tools that share the same or substantially the same stage and the same or substantially the same designs for respective arrays of multiple charged particle beam columns, and that access the same design layout database to target and pattern or inspect features. By using design-matched charged particle beam tools, correlation of defectivity is preserved between inspection imaging and the design layout database. As a result, image-based defect identification and maskless design correction, of random and systematic errors, can be performed directly in the design layout database, enabling a fast yield ramp.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: April 7, 2015
    Assignee: Multibeam Corporation
    Inventors: David K. Lam, Kevin M. Monahan, Theodore A. Prescop, Cong Tran
  • Patent number: 8999627
    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 write and inspection tools that share the same or substantially the same stage and the same or substantially the same designs for respective arrays of multiple charged particle beam columns, and that access the same design layout database to target and pattern or inspect features. By using design-matched charged particle beam tools, correlation of defectivity is preserved between inspection imaging and the design layout database. As a result, image-based defect identification and maskless design correction, of random and systematic errors, can be performed directly in the design layout database, enabling a fast yield ramp.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: April 7, 2015
    Assignee: Multibeam Corporation
    Inventors: David K. Lam, Kevin M. Monahan, Theodore A. Prescop, Cong Tran
  • Publication number: 20140258296
    Abstract: A system and method for management of network monitoring information includes a data collector for collecting real-time network information from network switching units, an aggregator for periodically aggregating the collected real-time network information and generating corresponding history information, a preprocessor for periodically determining results for first queries based on the collected real-time network information and the history information, a data storage system, and a data retriever for retrieving information from the data storage system. The data storage system stores the collected real-time network information, the aggregated history information, and the preprocessed results of the first queries. The data storage system also periodically purges the stored real-time information based on a first time-to-live value and the stored history information based on a second time-to-live value.
    Type: Application
    Filed: March 11, 2013
    Publication date: September 11, 2014
    Applicant: Dell Products L.P.
    Inventors: YuLing Chen, David K. Lam, Bingjun Li, Weijun Li, Julie Shur-Meih Hsu