Patents by Inventor Roger Yu-Kwan Leung

Roger Yu-Kwan Leung 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).

  • Publication number: 20150126653
    Abstract: Dopant ink compositions for forming doped regions in semiconductor substrates and methods for fabricating dopant ink compositions are provided. In an exemplary embodiment, a dopant ink composition comprises a dopant compound including at least one alkyl group bonded to a Group 13 element. Further, the dopant ink composition includes a silicon-containing compound.
    Type: Application
    Filed: January 12, 2015
    Publication date: May 7, 2015
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Ligui Zhou, Richard A. Spear, Roger Yu-Kwan Leung, Wenya Fan, Helen X. Xu, Lea M. Metin, Anil Shriram Bhanap
  • Patent number: 8975170
    Abstract: Dopant ink compositions for forming doped regions in semiconductor substrates and methods for fabricating dopant ink compositions are provided. In an exemplary embodiment, a dopant ink composition comprises a dopant compound including at least one alkyl group bonded to a Group 13 element or a Group 15 element. Further, the dopant ink composition includes a silicon-containing compound.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: March 10, 2015
    Assignee: Honeywell International Inc.
    Inventors: Ligui Zhou, Richard A. Spear, Roger Yu-Kwan Leung, Wenya Fan, Helen X. Xu, Lea M. Metin, Anil Shriram Bhanap
  • Publication number: 20130240794
    Abstract: A method for fabricating a boron-comprising ink is provided. The method includes providing an inorganic boron-comprising material, combining the inorganic boron-comprising material with a polar solvent having a boiling point in a range of from about 50° C. to about 250° C., and combining the inorganic boron-comprising material with a spread-minimizing additive that results in a spreading factor of the boron-comprising ink in a range of from about 1.5 to about 6.
    Type: Application
    Filed: May 6, 2013
    Publication date: September 19, 2013
    Applicant: Honeywell International Inc.
    Inventors: Roger Yu-Kwan Leung, De-Ling Zhou, Wenya Fan
  • Patent number: 8518170
    Abstract: Boron-comprising inks for forming boron-doped regions in semiconductor substrates using non-contact printing processes and methods for fabricating such boron-comprising inks are provided. A boron-comprising ink comprises boron from or of a boron-comprising material and a spread-minimizing additive that results in a spreading factor of the boron-comprising ink in a range of from about 1.5 to about 6. The boron-comprising ink has a viscosity in a range of from about 1.5 to about 50 centipoise and, when deposited on a semiconductor substrate, provides a post-anneal sheet resistance in a range of from about 10 to about 100 ohms/square, a post-anneal doping depth in a range of from about 0.1 to about 1 ?m, and a boron concentration in a range of from about 1×1019 to 1×1020 atoms/cm3.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: August 27, 2013
    Assignee: Honeywell International Inc.
    Inventors: Roger Yu-Kwan Leung, De-Ling Zhou, Wenya Fan
  • Publication number: 20130098266
    Abstract: Dopant ink compositions for forming doped regions in semiconductor substrates and methods for fabricating dopant ink compositions are provided. In an exemplary embodiment, a dopant ink composition comprises a dopant compound including at least one alkyl group bonded to a Group 13 element or a Group 15 element. Further, the dopant ink composition includes a silicon-containing compound.
    Type: Application
    Filed: October 24, 2011
    Publication date: April 25, 2013
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Ligui Zhou, Richard A. Spear, Roger Yu-Kwan Leung, Wenya Fan, Helen X. Xu, Lea M. Metin, Anil Shriram Bhanap
  • Patent number: 8324089
    Abstract: Compositions for forming doped regions in semiconductor substrates, methods for fabricating such compositions, and methods for forming doped regions using such compositions are provided. In one embodiment, a dopant-comprising composition comprises a conductivity-determining type impurity dopant, a silicate carrier, a solvent, and a moisture adsorption-minimizing component. In another embodiment, a dopant-comprising composition comprises a conductivity-determining type impurity dopant, a silicate carrier, a solvent, and a high boiling point material selected from the group consisting of glycol ethers, alcohols, and combinations thereof. The high boiling point material has a boiling point of at least about 150° C.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: December 4, 2012
    Assignee: Honeywell International Inc.
    Inventors: Roger Yu-Kwan Leung, Wenya Fan, Jan Nedbal
  • Patent number: 7951696
    Abstract: Methods for simultaneously forming doped regions of opposite conductivity using non-contact printing processes are provided. In one exemplary embodiment, a method comprises the steps of depositing a first liquid dopant comprising first conductivity-determining type dopant elements overlying a first region of a semiconductor material and depositing a second liquid dopant comprising second conductivity-determining type dopant elements overlying a second region of the semiconductor material. The first conductivity-determining type dopant elements and the second conductivity-determining type dopant elements are of opposite conductivity. At least a portion of the first conductivity-determining type dopant elements and at least a portion of the second conductivity-determining type dopant elements are simultaneously diffused into the first region and into the second region, respectively.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: May 31, 2011
    Assignee: Honeywell International Inc.
    Inventors: Roger Yu-Kwan Leung, Anil Bhanap, Zhe Ding, Nicole Rutherford, Wenya Fan
  • Publication number: 20110021012
    Abstract: Compositions for forming doped regions in semiconductor substrates, methods for fabricating such compositions, and methods for forming doped regions using such compositions are provided. In one embodiment, a dopant-comprising composition comprises a conductivity-determining type impurity dopant, a silicate carrier, a solvent, and a moisture adsorption-minimizing component. In another embodiment, a dopant-comprising composition comprises a conductivity-determining type impurity dopant, a silicate carrier, a solvent, and a high boiling point material selected from the group consisting of glycol ethers, alcohols, and combinations thereof. The high boiling point material has a boiling point of at least about 150° C.
    Type: Application
    Filed: July 20, 2010
    Publication date: January 27, 2011
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Roger Yu-Kwan Leung, Wenya Fan, Jan Nedbal, Lea M. Dankers
  • Patent number: 7820532
    Abstract: Method for simultaneously forming doped regions having different conductivity-determining type elements profiles are provided. In one exemplary embodiment, a method comprises the steps of diffusing first conductivity-determining type elements into a first region of a semiconductor material from a first dopant to form a doped first region. Second conductivity-determining type elements are simultaneously diffused into a second region of the semiconductor material from a second dopant to form a doped second region. The first conductivity-determining type elements are of the same conductivity-determining type as the second conductivity-determining type elements. The doped first region has a dopant profile that is different from a dopant profile of the doped second region.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: October 26, 2010
    Assignee: Honeywell International Inc.
    Inventors: Roger Yu-Kwan Leung, Nicole Rutherford, Anil Bhanap
  • Publication number: 20100167511
    Abstract: Method for simultaneously forming doped regions having different conductivity-determining type elements profiles are provided. In one exemplary embodiment, a method comprises the steps of diffusing first conductivity-determining type elements into a first region of a semiconductor material from a first dopant to form a doped first region. Second conductivity-determining type elements are simultaneously diffused into a second region of the semiconductor material from a second dopant to form a doped second region. The first conductivity-determining type elements are of the same conductivity-determining type as the second conductivity-determining type elements. The doped first region has a dopant profile that is different from a dopant profile of the doped second region.
    Type: Application
    Filed: December 29, 2008
    Publication date: July 1, 2010
    Applicant: Honeywell International Inc.
    Inventors: Roger Yu-Kwan Leung, Nicole Rutherford, Anil Bhanap
  • Publication number: 20100162920
    Abstract: Boron-comprising inks for forming boron-doped regions in semiconductor substrates using non-contact printing processes and methods for fabricating such boron-comprising inks are provided. A boron-comprising ink comprises boron from or of a boron-comprising material and a spread-minimizing additive that results in a spreading factor of the boron-comprising ink in a range of from about 1.5 to about 6. The boron-comprising ink has a viscosity in a range of from about 1.5 to about 50 centipoise and, when deposited on a semiconductor substrate, provides a post-anneal sheet resistance in a range of from about 10 to about 100 ohms/square, a post-anneal doping depth in a range of from about 0.1 to about 1 ?m, and a boron concentration in a range of from about 1×1019 to 1×1020 atoms/cm3.
    Type: Application
    Filed: December 29, 2008
    Publication date: July 1, 2010
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Roger Yu-Kwan Leung, De-Ling Zhou, Wenya Fan
  • Publication number: 20100081264
    Abstract: Methods for simultaneously forming doped regions of opposite conductivity using non-contact printing processes are provided. In one exemplary embodiment, a method comprises the steps of depositing a first liquid dopant comprising first conductivity-determining type dopant elements overlying a first region of a semiconductor material and depositing a second liquid dopant comprising second conductivity-determining type dopant elements overlying a second region of the semiconductor material. The first conductivity-determining type dopant elements and the second conductivity-determining type dopant elements are of opposite conductivity. At least a portion of the first conductivity-determining type dopant elements and at least a portion of the second conductivity-determining type dopant elements are simultaneously diffused into the first region and into the second region, respectively.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 1, 2010
    Applicant: Honeywell International Inc.
    Inventors: Roger Yu-Kwan Leung, Anil Bhanap, Zhe Ding, Nicole Rutherford, Wenya Fan
  • Publication number: 20100035422
    Abstract: Methods for forming doped regions in a semiconductor material that minimize or eliminate vapor diffusion of a dopant element and/or dopant from a deposited dopant and/or into a semiconductor material and methods for fabricating semiconductor devices that minimize or eliminate vapor diffusion of a dopant element and/or dopant from a deposited dopant and/or into a semiconductor material are provided. In one exemplary embodiment, a method for forming doped regions in a semiconductor material comprises depositing a conductivity-determining type dopant comprising a dopant element overlying a first portion of the semiconductor material. A diffusion barrier material is applied such that it overlies a second portion of the semiconductor material. The dopant element of the conductivity-determining type dopant is diffused into the first portion of the semiconductor material.
    Type: Application
    Filed: August 6, 2008
    Publication date: February 11, 2010
    Applicant: HONEYWELL INTERNATIONAL, INC.
    Inventors: Roger Yu-Kwan Leung, De-Ling Zhou, Wenya Fan
  • Publication number: 20090239363
    Abstract: Methods for forming doped regions in semiconductor substrates using non-contact printing processes and dopant-comprising inks for forming such doped regions using non-contact printing processes are provided. In an exemplary embodiment, a method for forming doped regions in a semiconductor substrate is provided. The method comprises providing an ink comprising a conductivity-determining type dopant, applying the ink to the semiconductor substrate using a non-contact printing process, and subjecting the semiconductor substrate to a thermal treatment such that the conductivity-determining type dopant diffuses into the semiconductor substrate.
    Type: Application
    Filed: November 19, 2008
    Publication date: September 24, 2009
    Applicant: HONEYWELL INTERNATIONAL, INC.
    Inventors: Roger Yu-Kwan Leung, De-Ling Zhou, Wenya Fan
  • Patent number: 6413882
    Abstract: The present invention relates to novel low dielectric constant nanoporous dielectric films having improved mechanical strength, and to improved processes for producing the same on substrates suitable for use in the production of integrated circuits. The nanoporous dielectric films are prepared by a process of preparing a mixture of a spin-on-glass material with a suitable thermally degradable polymer that is soluble in nonpolar solvents. Applying the resulting mixture onto a substrate suitable for use in the production of an integrated circuit, to produce a coated substrate. The coated substrate is then heated for a time and at one or more temperatures effective to remove the thermally degradable polymer, so as to produce the desired low dielectric nanoporous dielectric film.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: July 2, 2002
    Assignee: AlliedSignal Inc.
    Inventors: Roger Yu-Kwan Leung, Suzanne Case
  • Patent number: 6204202
    Abstract: The present invention relates to novel low dielectric constant nanoporous dielectric films having improved mechanical strength, and to improved processes for producing the same on substrates suitable for use in the production of integrated circuits. The nanoporous dielectric films are prepared by a process of preparing a mixture of a spin-on-glass material with a suitable thermally degradable polymer that is soluble in polar solvents. The resulting mixture is then applied onto a substrate suitable for use in the production of an integrated circuit, to produce a coated substrate that is heated for a time and at one or more temperatures effective to degrade the polymer, so as to produce the desired low dielectric nanoporous dielectric film.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: March 20, 2001
    Assignee: AlliedSignal, Inc.
    Inventors: Roger Yu-Kwan Leung, Suzanne Case
  • Patent number: 5438025
    Abstract: An improved fiber reinforced glass composite includes a refractory fiber in a matrix of a nitrogen-containing black glass ceramic having the empirical formula SiN.sub.z C.sub.x O.sub.y where x ranges from greater than zero up to about 2.0, preferably 0.1 to 1.0, y ranges from 0.5 up to about 3.0, preferably 0.7 to 1.8, and z ranges from above zero up to about 1.5, preferably 0.2 to 1.0. Preferably the black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group. The cyclosiloxane monomers are polymerized and then pyrolyzed in an ammonia-containing atmosphere to produce the nitrogen-containing black glass (silicon oxycarbonitride).
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: August 1, 1995
    Assignee: AlliedSignal Inc.
    Inventors: Roger Yu-Kwan Leung, Jon F. Nebo, Stephen T. Gonczy