Patents by Inventor Ulrich C. Boettiger

Ulrich C. Boettiger 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: 7046340
    Abstract: A method and apparatus for controlling an intensity distribution of a radiation beam directed to a microlithographic substrate. The method can include directing a radiation beam from a radiation source along the radiation path, with the radiation beam having a first distribution of intensity as the function of location in a plane generally transverse to the radiation path. The radiation beam impinges on an adaptive structure positioned in the radiation path and an intensity distribution of the radiation beam is changed from the first distribution to a second distribution by changing a state of the first portion of the adaptive structure relative to a second portion of the adaptive structure. For example, the transmissivity of the first portion, or inclination of the first portion can be changed relative to the second portion. The radiation is then directed away from the adaptive structure to impinge on the microlithographic substrate.
    Type: Grant
    Filed: June 16, 2004
    Date of Patent: May 16, 2006
    Assignee: Micron Technology, Inc.
    Inventors: Ulrich C. Boettiger, Scott L. Light
  • Patent number: 7038762
    Abstract: A method and apparatus for exposing a radiation-sensitive material of a microlithographic substrate to a selected radiation. The method can include directing the radiation along a radiation path in a first direction toward a reticle, passing the radiation from the reticle and to the microlithographic substrate along the radiation path in a second direction, and moving the reticle relative to the radiation path along a reticle path generally normal to the first direction. The microlithographic substrate can move relative to the radiation path along a substrate path having a first component generally parallel to the second direction, and a second component generally perpendicular to the second direction. The microlithographic substrate can move generally parallel to and generally perpendicular to the second direction in a periodic manner while the reticle moves along the reticle path to change a relative position of a focal plane of the radiation.
    Type: Grant
    Filed: July 28, 2004
    Date of Patent: May 2, 2006
    Assignee: Micron Technology, Inc.
    Inventors: Ulrich C. Boettiger, Scott L. Light, William T. Rericha, Craig A. Hickman
  • Patent number: 7012754
    Abstract: Asymmetrical structures and methods are used to adjust the orientation of a microlens for a pixel array. The asymmetrical structures affect volume and surface force parameters during microlens formation. Exemplary microlens structures include an asymmetrical microlens frame, base, material or a combination thereof to affect the focal characteristics of the microlens. The asymmetrical frame alters the microlens flow resulting from the heating of the microlens during fabrication such that orientation of the microlens relative to an axis of the imager can be controlled.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: March 14, 2006
    Assignee: Micron Technology, Inc.
    Inventors: Ulrich C. Boettiger, Jin Li
  • Patent number: 6995911
    Abstract: Micro-lenses for use in imagers and their method of manufacture from intermediate lens structures are described. Lithographic masks are used to remove unwanted portions from the intermediate lens structures and to remove cut-out portions from the intermediate lens structures to alter the radius of the resultant micro-lenses. Lithographic masks are also used to inhibit pull-back of the micro-lenses during a reflow step.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: February 7, 2006
    Assignee: Micron Technology, Inc.
    Inventor: Ulrich C. Boettiger
  • Patent number: 6905975
    Abstract: The invention includes methods by which the size and shape of photoresist-containing masking compositions can be selectively controlled after development of the photoresist. For instance, photoresist features can be formed over a substrate utilizing a photolithographic process. Subsequently, at least some of the photoresist features can be exposed to actinic radiation to cause release of a substance from the photoresist. A layer of material is formed over the photoresist features and over gaps between the features. The material has a solubility in a solvent which is reduced when the material interacts with the substance released from the photoresist. The solvent is utilized to remove portions of the material which are not sufficiently proximate to the photoresist to receive the substance, selectively relative to portions which are sufficiently proximate to the photoresist. The photoresist features can be exposed to the actinic radiation either before or after forming the layer of material.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: June 14, 2005
    Assignee: Micron Technology, Inc.
    Inventors: Ulrich C. Boettiger, Scott L. Light
  • Publication number: 20040263985
    Abstract: Micro-lenses for use in imagers and their method of manufacture from intermediate lens structures are described. Lithographic masks are used to remove unwanted portions from the intermediate lens structures and to remove cut-out portions from the intermediate lens structures to alter the radius of the resultant micro-lenses. Lithographic masks are also used to inhibit pull-back of the micro-lenses during a reflow step.
    Type: Application
    Filed: June 26, 2003
    Publication date: December 30, 2004
    Inventor: Ulrich C. Boettiger
  • Publication number: 20040246351
    Abstract: An optimized color filter array is formed in, above or below a one or more damascene layers. The color filter array includes filter regions which are configured to optimize the combined optical properties of the layers of the device to maximize the intensity of the particular wavelength of light incident to a respective underlying photodiode.
    Type: Application
    Filed: June 9, 2003
    Publication date: December 9, 2004
    Inventors: William M. Hiatt, Ulrich C. Boettiger, Jeffrey A. McKee
  • Publication number: 20040234871
    Abstract: A method and apparatus for controlling an intensity distribution of a radiation beam directed to a microlithographic substrate. The method can include directing a radiation beam from a radiation source along the radiation path, with the radiation beam having a first distribution of intensity as the function of location in a plane generally transverse to the radiation path. The radiation beam impinges on an adaptive structure positioned in the radiation path and an intensity distribution of the radiation beam is changed from the first distribution to a second distribution by changing a state of the first portion of the adaptive structure relative to a second portion of the adaptive structure. For example, the transmissivity of the first portion, or inclination of the first portion can be changed relative to the second portion. The radiation is then directed away from the adaptive structure to impinge on the microlithographic substrate.
    Type: Application
    Filed: June 16, 2004
    Publication date: November 25, 2004
    Inventors: Ulrich C. Boettiger, Scott L. Light
  • Publication number: 20040223071
    Abstract: An imager or display system with multiple lenses, which are formed, patterned and shaped over one or more pixels in an imager or display array. The multiple lenses provide for an improved concentration of light being refracted onto a photosensitive area or light diffused from a display pixel.
    Type: Application
    Filed: May 8, 2003
    Publication date: November 11, 2004
    Inventors: David Wells, Ulrich C. Boettiger
  • Patent number: 6794100
    Abstract: A method and apparatus for controlling an intensity distribution of a radiation beam directed to a microlithographic substrate. The method can include directing a radiation beam from a radiation source along the radiation path, with the radiation beam having a first distribution of intensity as the function of location in a plane generally transverse to the radiation path. The radiation beam impinges on an adaptive structure positioned in the radiation path and an intensity distribution of the radiation beam is changed from the first distribution to a second distribution by changing a state of the first portion of the adaptive structure relative to a second portion of the adaptive structure. For example, the transmissivity of the first portion, or inclination of the first portion can be changed relative to the second portion. The radiation is then directed away from the adaptive structure to impinge on the microlithographic substrate.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: September 21, 2004
    Assignee: Micron Technology, Inc.
    Inventors: Ulrich C. Boettiger, Scott L. Light
  • Patent number: 6784975
    Abstract: A method and apparatus for exposing a radiation-sensitive material of a microlithographic substrate to a selected radiation. The method can include directing the radiation along a radiation path in a first direction toward a reticle, passing the radiation from the reticle and to the microlithographic substrate along the radiation path in a second direction, and moving the reticle relative to the radiation path along a reticle path generally normal to the first direction. The microlithographic substrate can move relative to the radiation path along a substrate path having a first component generally parallel to the second direction, and a second component generally perpendicular to the second direction. The microlithographic substrate can move generally parallel to and generally perpendicular to the second direction in a periodic manner while the reticle moves along the reticle path to change a relative position of a focal plane of the radiation.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: August 31, 2004
    Assignee: Micron Technology, Inc.
    Inventors: Ulrich C. Boettiger, Scott L. Light, William T. Rericha, Craig A. Hickman
  • Patent number: 6577379
    Abstract: A method and apparatus for shaping and/or orienting radiation irradiating a microlithographic substrate. The method can include directing a beam of radiation along a radiation path toward a reflective medium, with the beam having a first shape in a plane generally transverse to the radiation path. The shape of the radiation beam can be changed from the first shape to a second, different shape by inclining a first portion of the reflective medium relative to a second portion of the reflective medium and reflecting the radiation beam toward a microlithographic substrate. The beam can then impinge on the microlithographic substrate after changing the shape from the first shape to the second shape, and at least a portion of the radiation can be inclined relative to the radiation path, for example, to enhance the imaging of selected diffractive orders.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: June 10, 2003
    Assignee: Micron Technology, Inc.
    Inventors: Ulrich C. Boettiger, Scott L. Light
  • Patent number: 6545829
    Abstract: A system and method for minimizing critical dimension errors on imaged wafers is described. After imaging and processing one or more wafers, the various critical dimensions are determined across the imaged exposure field and compared with the target critical dimensions to ascertain average critical dimension errors. The critical dimension error distribution across the field is modeled and the necessary exposure dose corrections are calculated to compensate the critical dimension errors. A pellicle is formed with light intensity modifying regions corresponding to the calculated local dose corrections. These regions alter the amount of light which is transmitted from a light source through a semiconductor mask onto the exposure fields of the wafers. As a consequence, the critical dimensions of the printed features are altered as well. The light intensity modifying region may be formed by depositing, such as by sputtering, particles which reflect or absorb light.
    Type: Grant
    Filed: August 21, 2000
    Date of Patent: April 8, 2003
    Assignee: Micron Technology, Inc.
    Inventors: Ulrich C. Boettiger, Scott L. Light, Steve W. Bowes
  • Patent number: 6538830
    Abstract: A system and method for minimizing critical dimension errors on imaged wafers is described. After imaging and processing one or more wafers, the various critical dimensions are determined across the imaged exposure field and compared with the target critical dimensions to ascertain average critical dimension errors. The critical dimension error distribution across the field is modeled and the necessary exposure dose corrections are calculated to compensate the critical dimension errors. A pellicle is formed with light intensity modifying regions corresponding to the calculated local dose corrections. These regions alter the amount of light which is transmitted from a light source through a semiconductor mask onto the exposure fields of the wafers. As a consequence, the critical dimensions of the printed features are altered as well. The light intensity modifying region may be formed by depositing, such as by sputtering, particles which reflect or absorb light.
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: March 25, 2003
    Assignee: Micron Technology, Inc.
    Inventors: Ulrich C. Boettiger, Scott L. Light, Steve W. Bowes
  • Publication number: 20030044693
    Abstract: A method and apparatus for exposing a radiation-sensitive material of a microlithographic substrate to a selected radiation. The method can include directing the radiation along a radiation path in a first direction toward a reticle, passing the radiation from the reticle and to the microlithographic substrate along the radiation path in a second direction, and moving the reticle relative to the radiation path along a reticle path generally normal to the first direction. The microlithographic substrate can move relative to the radiation path along a substrate path having a first component generally parallel to the second direction, and a second component generally perpendicular to the second direction. The microlithographic substrate can move generally parallel to and generally perpendicular to the second direction in a periodic manner while the reticle moves along the reticle path to change a relative position of a focal plane of the radiation.
    Type: Application
    Filed: August 30, 2001
    Publication date: March 6, 2003
    Inventors: Ulrich C. Boettiger, Scott L. Light, William T. Rericha, Craig A. Hickman
  • Publication number: 20030044701
    Abstract: A method and apparatus for controlling an intensity distribution of a radiation beam directed to a microlithographic substrate. The method can include directing a radiation beam from a radiation source along the radiation path, with the radiation beam having a first distribution of intensity as the function of location in a plane generally transverse to the radiation path. The radiation beam impinges on an adaptive structure positioned in the radiation path and an intensity distribution of the radiation beam is changed from the first distribution to a second distribution by changing a state of the first portion of the adaptive structure relative to a second portion of the adaptive structure. For example, the transmissivity of the first portion, or inclination of the first portion can be changed relative to the second portion. The radiation is then directed away from the adaptive structure to impinge on the microlithographic substrate.
    Type: Application
    Filed: August 30, 2001
    Publication date: March 6, 2003
    Inventors: Ulrich C. Boettiger, Scott L. Light
  • Patent number: 6465141
    Abstract: A system and method for minimizing critical dimension errors on imaged wafers is described. After imaging and processing one or more wafers, the various critical dimensions are determined across the imaged exposure field and compared with the target critical dimensions to ascertain average critical dimension errors. The critical dimension error distribution across the field is modeled and the necessary exposure dose corrections are calculated to compensate the critical dimension errors. A pellicle is formed with light intensity modifying regions corresponding to the calculated local dose corrections. These regions alter the amount of light which is transmitted from a light source through a semiconductor mask onto the exposure fields of the wafers. As a consequence, the critical dimensions of the printed features are altered as well. The light intensity modifying region may be formed by depositing, such as by sputtering, particles which reflect or absorb light.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: October 15, 2002
    Assignee: Micron Technology, Inc.
    Inventors: Ulrich C. Boettiger, Scott L. Light, Steve W. Bowes
  • Publication number: 20020085297
    Abstract: A system and method for minimizing critical dimension errors on imaged wafers is described. After imaging and processing one or more wafers, the various critical dimensions are determined across the imaged exposure field and compared with the target critical dimensions to ascertain average critical dimension errors. The critical dimension error distribution across the field is modeled and the necessary exposure dose corrections are calculated to compensate the critical dimension errors. A pellicle is formed with light intensity modifying regions corresponding to the calculated local dose corrections. These regions alter the amount of light which is transmitted from a light source through a semiconductor mask onto the exposure fields of the wafers. As a consequence, the critical dimensions of the printed features are altered as well. The light intensity modifying region may be formed by depositing, such as by sputtering, particles which reflect or absorb light.
    Type: Application
    Filed: December 3, 2001
    Publication date: July 4, 2002
    Inventors: Ulrich C. Boettiger, Scott L. Light, Steve W. Bowes
  • Publication number: 20020041369
    Abstract: A system and method for minimizing critical dimension errors on imaged wafers is described. After imaging and processing one or more wafers, die various critical dimensions are determined across the imaged exposure field and compared with the target critical dimensions to ascertain average critical dimension errors. The critical dimension error distribution across the field is modeled and die necessary exposure dose corrections are calculated to compensate the critical dimension errors. A pellicle is formed with light intensity modifying regions corresponding to the calculated local dose corrections. These regions alter the amount of light which is transmitted from a light source through a semiconductor mask onto the exposure fields of the wafers. As a consequence, the critical dimensions of the printed features are altered as well. The light intensity modifying region may be formed by depositing, such as by sputtering, particles which reflect or absorb light.
    Type: Application
    Filed: December 4, 2001
    Publication date: April 11, 2002
    Inventors: Ulrich C. Boettiger, Scott L. Light, Steve W. Bowes
  • Patent number: 5111240
    Abstract: A method in which pattern elements with predetermined wall profiles and/or lateral shapes, differing from the shapes of the respective pattern elements in an irradiation mask which is used, are formed in a photoresist layer. The method comprises a modification of a conventional photolithographic process, where a substrate supporting the photoresist layer is shifted laterally relative to the mask or the mask image in a continuous mode or in steps during exposure. Also disclosed is an apparatus which shifts a substrate relative to a mask in the x- and/or the y-direction or shifts the path of the beam relative to the substrate, controlling the shifting in a predetermined manner. The method--especially in connection with the apparatus--allows formation of reproducible photoresist patterns with a great variety of differently formed wall profiles and/or lateral shapes. Using the method, photoresist patterns can be flexibly adapted to many applications.
    Type: Grant
    Filed: February 8, 1990
    Date of Patent: May 5, 1992
    Assignee: International Business Machines Corporation
    Inventors: Ulrich C. Boettiger, Bernhard Hafner