Patents Assigned to Periodic Structures, Inc.
  • Patent number: 9329484
    Abstract: Methods of and apparatus for performing direct-write lithography in a two-color photoresist layer are disclosed. The method includes exposing the two-color photoresist layer with transducer and inhibition images that respectively define bright spots and dark spots. The transducer image generates excited-state photo-molecules while the inhibition image converts the exited-state photo-molecules to an unexcited state that is not susceptible to conversion to an irreversible exposed state. The dark spots and bright spots are aligned, with the dark spots being smaller than the bright spots so that a portion of the excited-state photo-molecules adjacent the periphery of the bright spots absorb the inhibition radiation and transition to the unexcited state while a portion of the excited photo-molecules at the center of bright spots are not exposed to the inhibition light and transition to an irreversible exposed state. This forms in the two-color photoresist layer a pattern of sub-resolution photoresist pixels.
    Type: Grant
    Filed: September 26, 2015
    Date of Patent: May 3, 2016
    Assignee: Periodic Structures, Inc.
    Inventors: David A. Markle, John S. Petersen
  • Publication number: 20160103394
    Abstract: Methods of and apparatus for performing direct-write lithography in a two-color photoresist layer are disclosed. The method includes exposing the two-color photoresist layer with transducer and inhibition images that respectively define bright spots and dark spots. The transducer image generates excited-state photo-molecules while the inhibition image converts the exited-state photo-molecules to an unexcited state that is not susceptible to conversion to an irreversible exposed state. The dark spots and bright spots are aligned, with the dark spots being smaller than the bright spots so that a portion of the excited-state photo-molecules adjacent the periphery of the bright spots absorb the inhibition radiation and transition to the unexcited state while a portion of the excited photo-molecules at the center of bright spots are not exposed to the inhibition light and transition to an irreversible exposed state. This forms in the two-color photoresist layer a pattern of sub-resolution photoresist pixels.
    Type: Application
    Filed: September 26, 2015
    Publication date: April 14, 2016
    Applicant: PERIODIC STRUCTURES, INC.
    Inventors: David A. Markle, John S. Petersen
  • Patent number: 9304410
    Abstract: Direct-write lithography apparatus and methods are disclosed in which a transducer image and an image of crossed interference fringe patterns are superimposed on a photoresist layer supported by a substrate. The transducer image has an exposure wavelength and contains bright spots, each corresponding to an activated pixel. The interference image has an inhibition wavelength and contains dark spots where the null points in the crossed interference fringes coincide. The dark spots are aligned with and trim the peripheries of the corresponding bright spot to form sub-resolution photoresist pixels having a size smaller than would be formed in the absence of the dark spots.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: April 5, 2016
    Assignee: Periodic Structures Inc.
    Inventors: David A. Markle, Rudolf H. Hendel, John S. Petersen, Hwan J. Jeong
  • Patent number: 9195139
    Abstract: Methods of and apparatus for performing direct-write lithography in a two-color photoresist layer are disclosed. The method includes exposing the two-color photoresist layer with transducer and inhibition images that respectively define bright spots and dark spots. The transducer image generates excited-state photo-molecules while the inhibition image converts the exited-state photo-molecules to an unexcited state that is not susceptible to conversion to an irreversible exposed state. The dark spots and bright spots are aligned, with the dark spots being smaller than the bright spots so that a portion of the excited-state photo-molecules adjacent the periphery of the bright spots absorb the inhibition radiation and transition to the unexcited state while a portion of the excited photo-molecules at the center of bright spots are not exposed to the inhibition light and transition to an irreversible exposed state. This forms in the two-color photoresist layer a pattern of sub-resolution photoresist pixels.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: November 24, 2015
    Assignee: Periodic Structures, Inc.
    Inventors: David A. Markle, John S. Petersen
  • Publication number: 20150331330
    Abstract: Direct-write lithography apparatus and methods are disclosed in which a transducer image and an image of crossed interference fringe patterns are superimposed on a photoresist layer supported by a substrate. The transducer image has an exposure wavelength and contains bright spots, each corresponding to an activated pixel. The interference image has an inhibition wavelength and contains dark spots where the null points in the crossed interference fringes coincide. The dark spots are aligned with and trim the peripheries of the corresponding bright spot to form sub-resolution photoresist pixels having a size smaller than would be formed in the absence of the dark spots.
    Type: Application
    Filed: December 30, 2013
    Publication date: November 19, 2015
    Applicant: Periodic Structures, Inc.
    Inventors: David A. Markle, Rudolf H. Hendel, John S. Petersen, Hwan J. Jeong
  • Patent number: 9075013
    Abstract: Microscope apparatus and methods for imaging an object with a resolution beyond the Abbe limit are disclosed. The apparatus employs an object selectively patterned with a fluorescing material that is induced to fluoresce with one wavelength and inhibited from fluorescing with a second wavelength. Two orthogonal interference-fringe patterns are generated from four diffracted light beams of an inhibiting wavelength and superimposed on the object along with light that induces fluorescence. The interference-pattern image allows only sub-resolution-sized emission areas of the object to fluoresce. Multiple images of the fluorescing object are obtained, each corresponding to a slightly different position of the fringe patterns on the substrate. Each image is processed to yield a sparsely sampled super-resolution image. Multiple sparse images are interwoven to form a complete super-resolution image of the object.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: July 7, 2015
    Assignee: Periodic Structures, Inc.
    Inventors: David A. Markle, Hwan J. Jeong, John S. Petersen
  • Publication number: 20150185617
    Abstract: Methods of and apparatus for performing direct-write lithography in a two-color photoresist layer are disclosed. The method includes exposing the two-color photoresist layer with transducer and inhibition images that respectively define bright spots and dark spots. The transducer image generates excited-state photo-molecules while the inhibition image converts the exited-state photo-molecules to an unexcited state that is not susceptible to conversion to an irreversible exposed state. The dark spots and bright spots are aligned, with the dark spots being smaller than the bright spots so that a portion of the excited-state photo-molecules adjacent the periphery of the bright spots absorb the inhibition radiation and transition to the unexcited state while a portion of the excited photo-molecules at the center of bright spots are not exposed to the inhibition light and transition to an irreversible exposed state. This forms in the two-color photoresist layer a pattern of sub-resolution photoresist pixels.
    Type: Application
    Filed: April 4, 2014
    Publication date: July 2, 2015
    Applicant: Periodic Structures, Inc.
    Inventors: David A. Markle, John S. Petersen
  • Patent number: 8642232
    Abstract: Direct-write lithography apparatus and methods are disclosed in which a transducer image and an image of crossed interference fringe patterns are superimposed on a photoresist layer supported by a substrate. The transducer image has an exposure wavelength and contains bright spots, each corresponding to an activated pixel. The interference image has an inhibition wavelength and contains dark spots where the null points in the crossed interference fringes coincide. The dark spots are aligned with and trim the peripheries of the corresponding bright spot to form sub-resolution photoresist pixels having a size smaller than would be formed in the absence of the dark spots.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: February 4, 2014
    Assignee: Periodic Structures, Inc.
    Inventors: David A. Markle, Rudolf H. Hendel, John S. Petersen, Hwan J. Jeong
  • Publication number: 20130286179
    Abstract: Microscope apparatus and methods for imaging an object with a resolution beyond the Abbe limit are disclosed. The apparatus employs an object selectively patterned with a fluorescing material that is induced to fluoresce with one wavelength and inhibited from fluorescing with a second wavelength. Two orthogonal interference-fringe patterns are generated from four diffracted light beams of an inhibiting wavelength and superimposed on the object along with light that induces fluorescence. The interference-pattern image allows only sub-resolution-sized emission areas of the object to fluoresce. Multiple images of the fluorescing object are obtained, each corresponding to a slightly different position of the fringe patterns on the substrate. Each image is processed to yield a sparsely sampled super-resolution image. Multiple sparse images are interwoven to form a complete super-resolution image of the object.
    Type: Application
    Filed: April 26, 2013
    Publication date: October 31, 2013
    Applicant: Periodic Structures, Inc.
    Inventors: David A. Markle, Hwan J. Jeong, John S. Petersen
  • Publication number: 20130130182
    Abstract: Direct-write lithography apparatus and methods are disclosed in which a transducer image and an image of crossed interference fringe patterns are superimposed on a photoresist layer supported by a substrate. The transducer image has an exposure wavelength and contains bright spots, each corresponding to an activated pixel. The interference image has an inhibition wavelength and contains dark spots where the null points in the crossed interference fringes coincide. The dark spots are aligned with and trim the peripheries of the corresponding bright spot to form sub-resolution photoresist pixels having a size smaller than would be formed in the absence of the dark spots.
    Type: Application
    Filed: November 16, 2012
    Publication date: May 23, 2013
    Applicant: Periodic Structures, Inc.
    Inventors: David A. Markle, Rudolf H. Hendel, John S. Petersen