Patents by Inventor H. Daniel Dulman

H. Daniel Dulman 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: 7350182
    Abstract: The invention includes methods of forming patterned reticles. Design features can be introduced into a layout for a reticle prior to optical proximity correction, and then removed prior to taping a pattern onto the reticle. Design features can alternatively, or additionally, be introduced after optical proximity correction and asymmetrically relative to one or more parts of a reticle pattern. The introduced features can subsequently be taped to the reticle as part of the formation of the patterned reticle.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: March 25, 2008
    Assignee: Micron Technology, Inc.
    Inventors: H. Daniel Dulman, William A. Stanton, John R. C. Futrell
  • Patent number: 7291425
    Abstract: The invention includes, for example, a radiation patterning tool which can be utilized to form relatively circular contacts in situations in which an array of contacts has a different pitch along a row of the array than along a column of the array. An alternating phase shift can give a well-defined contact in the small pitch (dense) direction. Rim shifters are added in the larger pitch direction to force the circular form of the contact openings. In further aspects of the invention, side-lobe-suppressing patterns can be added between adjacent rims. The invention also includes methods of forming radiation patterning tools.
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: November 6, 2007
    Assignee: Micron Technology, Inc.
    Inventor: H. Daniel Dulman
  • Patent number: 7226707
    Abstract: The invention encompasses a radiation-patterning tool. The tool is configured to be utilized to print a pair of structures in a radiation-sensitive material. The tool includes two separate and discrete features, with one of the features corresponding to one of the structures of the pair of structures and the other of the two features correspond to the other of the structures. At least one element is between the features. The at least one element is at least partially transparent to radiation passing through the radiation-patterning tool, but does not correspond to a discrete structure printed in the radiation-sensitive material. The element modifies the structures printed from the pair of features. The invention also includes printing methods and methods of forming aligned structures with radiation-sensitive material.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: June 5, 2007
    Assignee: Micron Technology, Inc.
    Inventors: H. Daniel Dulman, William A. Stanton
  • Patent number: 7107572
    Abstract: The invention includes methods of forming patterned reticles. Design features can be introduced into a layout for a reticle prior to optical proximity correction, and then removed prior to taping a pattern onto the reticle. Design features can alternatively, or additionally, be introduced after optical proximity correction and asymmetrically relative to one or more parts of a reticle pattern. The introduced features can subsequently be taped to the reticle as part of the formation of the patterned reticle.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: September 12, 2006
    Assignee: Micron Technology, Inc.
    Inventors: H. Daniel Dulman, William A. Stanton, John R. C. Futrell
  • Patent number: 7093227
    Abstract: The invention includes methods of forming patterned reticles. Design features can be introduced into a layout for a reticle prior to optical proximity correction, and then removed prior to taping a pattern onto the reticle. Design features can alternatively, or additionally, be introduced after optical proximity correction and asymmetrically relative to one or more parts of a reticle pattern. The introduced features can subsequently be taped to the reticle as part of the formation of the patterned reticle.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: August 15, 2006
    Assignee: Micron Technology, Inc.
    Inventors: H. Daniel Dulman, William A. Stanton, John R. C. Futrell
  • Patent number: 7086031
    Abstract: The invention includes methods of forming patterned reticles. Design features can be introduced into a layout for a reticle prior to optical proximity correction, and then removed prior to taping a pattern onto the reticle. Design features can alternatively, or additionally, be introduced after optical proximity correction and asymmetrically relative to one or more parts of a reticle pattern. The introduced features can subsequently be taped to the reticle as part of the formation of the patterned reticle.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: August 1, 2006
    Assignee: Micron Technology, Inc.
    Inventors: H. Daniel Dulman, William A. Stanton, John R. C. Futrell
  • Patent number: 7073161
    Abstract: The invention includes methods of forming patterned reticles. Design features can be introduced into a layout for a reticle prior to optical proximity correction, and then removed prior to taping a pattern onto the reticle. Design features can alternatively, or additionally, be introduced after optical proximity correction and asymmetrically relative to one or more parts of a reticle pattern. The introduced features can subsequently be taped to the reticle as part of the formation of the patterned reticle.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: July 4, 2006
    Assignee: Micron Technology, Inc.
    Inventors: H. Daniel Dulman, William A. Stanton, John R. C. Futrell
  • Patent number: 7008738
    Abstract: A method of formulating and fabricating a mask pattern and resulting mask for forming isolated or closely spaced contact holes in an integrated circuit. The mask has a transparent mask substrate and patterned regions of attenuating phase shift material and opaque, partially transmissive or transparent material arranged to reduce the effect of side lobes and improve depth of focus. The rims, frames and outrigger patterns for the attenuating phase shift material and opaque, partially transmissive or transparent material are determined according to calculations performed on a processor with imaging software for various optical conditions and exposed feature criteria.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: March 7, 2006
    Assignee: Micron Technology, Inc.
    Inventors: H. Daniel Dulman, William A. Stanton
  • Patent number: 6911301
    Abstract: The invention encompasses a radiation-patterning tool. The tool is configured to be utilized to print a pair of structures in a radiation-sensitive material. The tool includes two separate and discrete features, with one of the features corresponding to one of the structures of the pair of structures and the other of the two features correspond to the other of the structures. At least one element is between the features. The at least one element is at least partially transparent to radiation passing through the radiation-patterning tool, but does not correspond to a discrete structure printed in the radiation-sensitive material. The element modifies the structures printed from the pair of features. The invention also includes printing methods and methods of forming aligned structures with radiation-sensitive material.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: June 28, 2005
    Assignee: Micron Technology, Inc.
    Inventors: H. Daniel Dulman, William A. Stanton
  • Patent number: 6887629
    Abstract: The invention encompasses a radiation-patterning tool. The tool is configured to be utilized to print a pair of structures in a radiation-sensitive material. The tool includes two separate and discrete features, with one of the features corresponding to one of the structures of the pair of structures and the other of the two features correspond to the other of the structures. At least one element is between the features. The at least one element is at least partially transparent to radiation passing through the radiation-patterning tool, but does not correspond to a discrete structure printed in the radiation-sensitive material. The element modifies the structures printed from the pair of features. The invention also includes printing methods and methods of forming aligned structures with radiation-sensitive material.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: May 3, 2005
    Assignee: Micron Technology, Inc.
    Inventors: H. Daniel Dulman, William A. Stanton
  • Patent number: 6841310
    Abstract: The invention includes, for example, a radiation patterning tool which can be utilized to form relatively circular contacts in situations in which an array of contacts has a different pitch along a row of the array than along a column of the array. An alternating phase shift can give a well-defined contact in the small pitch (dense) direction. Rim shifters are added in the larger pitch direction to force the circular form of the contact openings. In further aspects of the invention, side-lobe-suppressing patterns can be added between adjacent rims. The invention also includes methods of forming radiation patterning tools.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: January 11, 2005
    Assignee: Micron Technology, Inc.
    Inventor: H. Daniel Dulman
  • Patent number: 6842889
    Abstract: The invention includes methods of forming patterned reticles. Design features can be introduced into a layout for a reticle prior to optical proximity correction, and then removed prior to taping a pattern onto the reticle. Design features can alternatively, or additionally, be introduced after optical proximity correction and asymmetrically relative to one or more parts of a reticle pattern. The introduced features can subsequently be taped to the reticle as part of the formation of the patterned reticle.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: January 11, 2005
    Assignee: Micron Technology, Inc.
    Inventors: H. Daniel Dulman, William A. Stanton, John R. C. Futrell
  • Publication number: 20040214096
    Abstract: A method of formulating and fabricating a mask pattern and resulting mask for forming isolated or closely spaced contact holes in an integrated circuit. The mask has a transparent mask substrate and patterned regions of attenuating phase shift material and opaque, partially transmissive or transparent material arranged to reduce the effect of side lobes and improve depth of focus. The rims, frames and outrigger patterns for the attenuating phase shift material and opaque, partially transmissive or transparent material are determined according to calculations performed on a processor with imaging software for various optical conditions and exposed feature criteria.
    Type: Application
    Filed: May 18, 2004
    Publication date: October 28, 2004
    Inventors: H. Daniel Dulman, William A. Stanton
  • Patent number: 6803155
    Abstract: A method of formulating and fabricating a mask pattern and resulting mask for forming isolated or closely spaced contact holes in an integrated circuit. The mask has a transparent mask substrate and patterned regions of attenuating phase shift material and opaque, partially transmissive or transparent material arranged to reduce the effect of side lobes and improve depth of focus. The rims, frames and outrigger patterns for the attenuating phase shift material and opaque, partially transmissive or transparent material are determined according to calculations performed on a processor with imaging software for various optical conditions and exposed feature criteria.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: October 12, 2004
    Assignee: Micron Technology, Inc.
    Inventors: H. Daniel Dulman, William A. Stanton
  • Publication number: 20040180272
    Abstract: The invention encompasses a radiation-patterning tool. The tool is configured to be utilized to print a pair of structures in a radiation-sensitive material. The tool includes two separate and discrete features, with one of the features corresponding to one of the structures of the pair of structures and the other of the two features correspond to the other of the structures. At least one element is between the features. The at least one element is at least partially transparent to radiation passing through the radiation-patterning tool, but does not correspond to a discrete structure printed in the radiation-sensitive material. The element modifies the structures printed from the pair of features. The invention also includes printing methods and methods of forming aligned structures with radiation-sensitive material.
    Type: Application
    Filed: March 24, 2004
    Publication date: September 16, 2004
    Inventors: H. Daniel Dulman, William A. Stanton
  • Publication number: 20040180273
    Abstract: The invention encompasses a radiation-patterning tool. The tool is configured to be utilized to print a pair of structures in a radiation-sensitive material. The tool includes two separate and discrete features, with one of the features corresponding to one of the structures of the pair of structures and the other of the two features correspond to the other of the structures. At least one element is between the features. The at least one element is at least partially transparent to radiation passing through the radiation-patterning tool, but does not correspond to a discrete structure printed in the radiation-sensitive material. The element modifies the structures printed from the pair of features. The invention also includes printing methods and methods of forming aligned structures with radiation-sensitive material.
    Type: Application
    Filed: March 24, 2004
    Publication date: September 16, 2004
    Inventors: H. Daniel Dulman, William A. Stanton
  • Patent number: 6737200
    Abstract: A method for fabricating a mask which includes a printable contact and/or line area which is aligned with a phase-shifter. The method includes preparing a mask-in-process comprising a substrate underlying a first layer, an opaque layer overlying the first layer, and a first resist material overlying the opaque layer, and subjecting the mask-in-process to a plurality of exposures and at least one etching to create a phase-shifter and to open a printable contact and/or line area surrounded by a second resist material, wherein the printable contact and/or line area is aligned with the phase-shifter.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: May 18, 2004
    Assignee: Micron Technology, Inc.
    Inventors: H. Daniel Dulman, William A. Stanton
  • Publication number: 20040038134
    Abstract: The invention encompasses a radiation-patterning tool. The tool is configured to be utilized to print a pair of structures in a radiation-sensitive material. The tool includes two separate and discrete features, with one of the features corresponding to one of the structures of the pair of structures and the other of the two features correspond to the other of the structures. At least one element is between the features. The at least one element is at least partially transparent to radiation passing through the radiation-patterning tool, but does not correspond to a discrete structure printed in the radiation-sensitive material. The element modifies the structures printed from the pair of features. The invention also includes printing methods and methods of forming aligned structures with radiation-sensitive material.
    Type: Application
    Filed: August 21, 2002
    Publication date: February 26, 2004
    Inventors: H. Daniel Dulman, William A. Stanton
  • Publication number: 20040031013
    Abstract: The invention includes methods of forming patterned reticles. Design features can be introduced into a layout for a reticle prior to optical proximity correction, and then removed prior to taping a pattern onto the reticle. Design features can alternatively, or additionally, be introduced after optical proximity correction and asymmetrically relative to one or more parts of a reticle pattern. The introduced features can subsequently be taped to the reticle as part of the formation of the patterned reticle.
    Type: Application
    Filed: August 6, 2002
    Publication date: February 12, 2004
    Inventors: H. Daniel Dulman, William A. Stanton, John R.C. Futrell
  • Publication number: 20030152844
    Abstract: The invention includes, for example, a radiation patterning tool which can be utilized to form relatively circular contacts in situations in which an array of contacts has a different pitch along a row of the array than along a column of the array. An alternating phase shift can give a well-defined contact in the small pitch (dense) direction. Rim shifters are added in the larger pitch direction to force the circular form of the contact openings. In further aspects of the invention, side-lobe-suppressing patterns can be added between adjacent rims. The invention also includes methods of forming radiation patterning tools.
    Type: Application
    Filed: February 5, 2002
    Publication date: August 14, 2003
    Inventor: H. Daniel Dulman