Patents Assigned to Attofemto, Inc.
  • Patent number: 9952161
    Abstract: An interferometric holographic instrument enables the generation of digital data for testing and enabling 2-dimensional and 3-dimensional analysis of “live” and real-time semiconductor or anisotropic devices and materials. The digitally recorded interferometric data can be displayed, stored or connected to a live data stream for transmission to digital processing devices. A digital electric processor or analyzer connected to the recording device, or live data stream, enables the interferometric data to be utilized to test, develop, and shape semiconductor and anisotropic microelectronic processing, wireless and microwave devices.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: April 24, 2018
    Assignee: Attofemto, Inc.
    Inventor: Paul L. Pfaff
  • Patent number: 9366719
    Abstract: In decreasing the electron beam duration required for increased time resolution, the average beam current decreases, degrading measurement sensitivity and limiting the spatial and time resolution of electron beam and ion beam devices. Optical to optical measurements using two imaging devices permits non-invasive or non-destructive enhancements permits enhanced spatial and time measurements and enables a new regime of internal device and process evaluation and quality control in integrated circuit (IC) manufacture, at every stage from the initial wafer to the point at which the wafer is diced into individual ICs.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: June 14, 2016
    Assignee: ATTOFEMTO, INC.
    Inventor: Paul L. Pfaff
  • Patent number: 9250064
    Abstract: Improved methods and systems for inspection imaging for holographic or interferometric semiconductor test and evaluation through all phases of device development and manufacture. Specifically, systems and methods are disclosed for extending the range of optical holographic interferometric inspection for testing and evaluating microelectronic devices and determining the interplay of electromagnetic signals and dynamic stresses to the semiconductor material are provided in which an enhanced imaging method provides continuous and varying the magnification of the optical holographic interferometric images over a plurality of interleaved optical pathways and imaging devices. Analysis of one or more holographic interference patterns displays internal and external stresses and the various effects of such stresses upon the operating characteristics of features within the features, interior structures or within the internal surfaces of the semiconductor device at any stage of development or manufacture.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: February 2, 2016
    Assignee: Attofemto, Inc.
    Inventor: Paul L. Pfaff
  • Patent number: 8879071
    Abstract: Methods and systems for resolving and determining sub-wavelength sized features and stresses by using infrared optical and thermal wavelength probing for holographic or interferometric evaluation and testing for all phases of semiconductor device development and manufacture. Specifically, systems and methods are disclosed for extending the range of optical holographic interferometric inspection for testing and evaluating microelectronic devices and determining the interplay of electromagnetic signals and dynamic stresses to the semiconductor material in which an enhanced imaging method provides continuous and varying magnification of the optical holographic interferometric images over a plurality of interleaved optical pathways of varying optical paths and imaging devices.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: November 4, 2014
    Assignee: Attofemto, Inc.
    Inventor: Paul L. Pfaff
  • Patent number: 8736823
    Abstract: Analysis and characterization of semiconductor and free-metal devices using a plurality of “live” and stored interference patterns or data detected to determine or generate two-dimensional or three-dimensional information of at least one internal stress or signal, or determining the effects thereof of internal or external stresses acting upon or within the electrical signals applied to a device under test or evaluation having exterior surfaces, interior structures, electronic features as well as determining the effects thereof of chemicals, bioelectric materials, or substances, placed adjacent to the surface of the devices under test.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: May 27, 2014
    Assignee: Attofemto, Inc.
    Inventor: Paul L. Pfaff
  • Publication number: 20140103935
    Abstract: In decreasing the electron beam duration required for increased time resolution, the average beam current decreases, degrading measurement sensitivity and limiting practical systems to a time resolution of several hundred picoseconds. Optical non-invasive or non-destructive enhancements permits femto-second measurements and a new regime of internal device and process evaluation and quality control in integrated circuit (IC) manufacture, at every stage from the initial wafer to the point at which the wafer is diced into individual ICs.
    Type: Application
    Filed: December 17, 2013
    Publication date: April 17, 2014
    Applicant: Attofemto, Inc.
    Inventor: Paul L. Pfaff
  • Publication number: 20130337585
    Abstract: Methods and systems for resolving and determining sub-wavelength sized features and stresses by using infrared optical and thermal wavelength probing for holographic or interferometric evaluation and testing for all phases of semiconductor device development and manufacture. Specifically, systems and methods are disclosed for extending the range of optical holographic interferometric inspection for testing and evaluating microelectronic devices and determining the interplay of electromagnetic signals and dynamic stresses to the semiconductor material in which an enhanced imaging method provides continuous and varying magnification of the optical holographic interferometric images over a plurality of interleaved optical pathways of varying optical paths and imaging devices.
    Type: Application
    Filed: May 28, 2013
    Publication date: December 19, 2013
    Applicant: Attofemto, Inc.
    Inventor: Paul L. Pfaff
  • Publication number: 20130181722
    Abstract: Analysis and characterization of semiconductor and free-metal devices using a plurality of “live” and stored interference patterns or data detected to determine or generate two-dimensional or three-dimensional information of at least one internal stress or signal, or determining the effects thereof of internal or external stresses acting upon or within the electrical signals applied to a device under test or evaluation having exterior surfaces, interior structures, electronic features as well as determining the effects thereof of chemicals, bioelectric materials, or substances, placed adjacent to the surface of the devices under test.
    Type: Application
    Filed: March 5, 2013
    Publication date: July 18, 2013
    Applicant: Attofemto, Inc.
    Inventor: Paul L. Pfaff
  • Patent number: 8462350
    Abstract: Improved methods and systems for inspection imaging for holographic or interferometric semiconductor test and evaluation through all phases of device development and manufacture. Specifically, systems and methods are disclosed for extending the range of optical holographic interferometric inspection for testing and evaluating microelectronic devices and determining the interplay of electromagnetic signals and dynamic stresses to the semiconductor material are provided in which an enhanced imaging method provides continuous and varying the magnification of the optical holographic interferometric images over a plurality of interleaved optical pathways and imaging devices. Analysis of one or more holographic interference patterns displays internal and external stresses and the various effects of such stresses upon the operating characteristics of features within the features, interior structures or within the internal surfaces of the semiconductor device at any stage of development or manufacture.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: June 11, 2013
    Assignee: Attofemto, Inc.
    Inventor: Paul L. Pfaff
  • Patent number: 8405823
    Abstract: An improved optical infrared and ultraviolet imaging system including a first imaging device that is sensitive to a light which creates a photocurrent or changes in electric field or stresses within the first imaging device and a second infrared imaging device that is illuminated by light incident to the first imaging device which is reflected to the second imaging device which images optical changes in phase or polarization or amplitude or birefringence within the first imaging device.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: March 26, 2013
    Assignee: Attofemto, Inc.
    Inventor: Paul L. Pfaff
  • Publication number: 20120133922
    Abstract: An improved optical infrared and ultraviolet imaging and testing system including a primary imaging device with a target portion and a secondary imaging device for determining the presence and nature of various external (e.g. magnetic field, microwave, bioelectric or incident infrared, thermal, ultraviolet, radiation, or x-rays) or internal stresses (e.g., photo-generated carriers or photo-induced resistance) or other conditions acting upon the primary detection device which are optically enhanced for detection by the secondary detection device or devices.
    Type: Application
    Filed: October 7, 2011
    Publication date: May 31, 2012
    Applicant: Attofemto, Inc.
    Inventor: Paul L. Pfaff
  • Publication number: 20120127473
    Abstract: Improved methods and systems for inspection imaging for holographic or interferometric semiconductor test and evaluation through all phases of device development and manufacture. Specifically, systems and methods are disclosed for extending the range of optical holographic interferometric inspection for testing and evaluating microelectronic devices and determining the interplay of electromagnetic signals and dynamic stresses to the semiconductor material are provided in which an enhanced imaging method provides continuous and varying the magnification of the optical holographic interferometric images over a plurality of interleaved optical pathways and imaging devices. Analysis of one or more holographic interference patterns displays internal and external stresses and the various effects of such stresses upon the operating characteristics of features within the features, interior structures or within the internal surfaces of the semiconductor device at any stage of development or manufacture.
    Type: Application
    Filed: February 3, 2012
    Publication date: May 24, 2012
    Applicant: ATTOFEMTO, INC.
    Inventor: Paul L. Pfaff
  • Patent number: 8139228
    Abstract: Improved methods and systems for inspection imaging for holographic or interferometric semiconductor test and evaluation through all phases of manufacture. Specifically, systems and methods are disclosed for extending the range of optical holographic interferometric inspection for evaluating microelectronic devices and determining the interplay of electromagnetic signals and dynamic stresses to the semiconductor material are provided in which an enhanced imaging method provides continuous and varying of the magnification of the optical holographic interferometric images over a plurality of interleaved optical pathways and imaging devices. Analysis of one or more holographic interference patterns displays internal and external stresses and the various effects of such stresses upon the operating characteristics of features within the features, interior structures, or internal surfaces of the semiconductor material or wafer under test.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: March 20, 2012
    Assignee: Attofemto, Inc.
    Inventor: Paul L. Pfaff
  • Patent number: 8040521
    Abstract: An improved condition testing system and method integrated into microelectronic circuits includes a structure including a semiconductor material with a target portion and a second portion for determining the presence and nature of various external (e.g. magnetic field, microwave, bioelectric or incident radiation) or internal stresses (e.g. binary circuit-state or analog signal recognition) or conditions acting upon the material. The target portion has a first feature when at least one of the following occurs: an external force is received by the second portion of the structure and an internal condition occurs in the target portion. The system and method further has a test grating determined and shaped and located to produce a first optical interference pattern when the target portion and the grating are exposed to non-invasive illumination and when the target portion has the first feature.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: October 18, 2011
    Assignee: Attofemto, Inc.
    Inventor: Paul L. Pfaff
  • Publication number: 20110122415
    Abstract: Improved methods and systems for inspection imaging for holographic or interferometric semiconductor test and evaluation through all phases of manufacture. Specifically, systems and methods for extending the range of optical holographic interferometric inspection for evaluating microelectronic devices and the interplay of electromagnetic signals and dynamic stresses to the semiconductor material are provided in which an enhanced imaging method provides continuous and varying magnification over a plurality of interleaved optical pathways and imaging devices. Analysis of one or more holographic interference patterns displays internal and external stresses and the various effects of such stresses upon the operating characteristics of features within the feature or interior structures or internal surfaces of the semiconductor material or wafer.
    Type: Application
    Filed: May 13, 2010
    Publication date: May 26, 2011
    Applicant: Attofemto, Inc.
    Inventor: Paul L. Pfaff
  • Patent number: 7773230
    Abstract: An improved condition testing system and method includes a structure including a semiconductor material with a target portion and a second portion. The target portion has a first feature when at least one of the following occurs: an external force is received by the second portion of the structure and an internal condition occurs in the target portion. The system and method further has a interferogram shaped and located to produce a first optical interference pattern when the target portion and the interferogram are exposed to non-invasive illumination and when the target portion has the first feature. Further implementations use a second test interferogram spaced apart from the first test interferogram.
    Type: Grant
    Filed: July 14, 2008
    Date of Patent: August 10, 2010
    Assignee: Attofemto, Inc.
    Inventor: Paul Pfaff
  • Patent number: 7733499
    Abstract: A method for optically testing semiconductor devices or wafers using a holographic optical interference system with an infrared or thermal light source providing a light beam of coherent wavelength with a wavelength to which the semiconductor material is transparent, splitting the light beam into a reference beam and an object beam, imposing the object beam on the semiconductor material to generate a reflected object beam reflected from interior structures of the semiconductor material, adjusting the angle of the reference beam relative to the object beam between a plurality of angles with the semiconductor material being a different state for each angle of the reference beam, imposing the reflected object beam and the reference beam onto a detection device to create a plurality of interference patterns, one for each of the reference beam angles, and comparing the interference patterns to one another to determine and display characteristics within the semiconductor material.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: June 8, 2010
    Assignee: Attofemto, Inc.
    Inventor: Paul L. Pfaff
  • Patent number: 7728958
    Abstract: An improved condition testing system and method includes a structure including a semiconductor material with a target portion and a second portion. The target portion has a first feature when at least one of the following occurs: an external force is received by the second portion of the structure and an internal condition occurs in the target portion. The system and method further has a grating shaped and located to produce a first optical interference pattern when the target portion and the grating are exposed to non-invasive illumination and when the target portion has the first feature. Further implementations use a second grating spaced apart from the first grating.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: June 1, 2010
    Assignee: Attofemto, Inc.
    Inventor: Paul L. Pfaff
  • Publication number: 20100091292
    Abstract: An improved condition testing system and method integrated into microelectronic circuits includes a structure including a semiconductor material with a target portion and a second portion for determining the presence and nature of various external (e.g. magnetic field, microwave, bioelectric or incident radiation) or internal stresses (e.g. binary circuit-state or analog signal recognition) or conditions acting upon the material. The target portion has a first feature when at least one of the following occurs: an external force is received by the second portion of the structure and an internal condition occurs in the target portion. The system and method further has a test grating determined and shaped and located to produce a first optical interference pattern when the target portion and the grating are exposed to non-invasive illumination and when the target portion has the first feature.
    Type: Application
    Filed: April 10, 2009
    Publication date: April 15, 2010
    Applicant: Attofemto, Inc.
    Inventor: Paul L. Pfaff
  • Publication number: 20090002717
    Abstract: An improved condition testing system and method includes a structure including a semiconductor material with a target portion and a second portion. The target portion has a first feature when at least one of the following occurs: an external force is received by the second portion of the structure and an internal condition occurs in the target portion. The system and method further has a grating shaped and located to produce a first optical interference pattern when the target portion and the grating are exposed to non-invasive illumination and when the target portion has the first feature. Further implementations use a second grating spaced apart from the first grating.
    Type: Application
    Filed: July 14, 2008
    Publication date: January 1, 2009
    Applicant: ATTOFEMTO, INC.
    Inventor: Paul Pfaff