Patents by Inventor Herbert Lei Ho

Herbert Lei Ho 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: 9171848
    Abstract: An integrated circuit structure provides at least one metal-insulator-metal (MIM) capacitor and a moat isolation structure wherein the number of processes required is substantially minimized and the formation of the MIM capacitor and the moat isolation structure effectively decouple while the number of processes common to the moat isolation structure and the MIM capacitor are maximized. Additional required processes are non-critical and tolerant of overlay positioning error.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: October 27, 2015
    Assignee: GLOBALFOUNDRIES, INC.
    Inventors: Thomas Walter Dyer, Herbert Lei Ho, Jin Liu
  • Patent number: 9059194
    Abstract: Partial removal of organic planarizing layer (OPL) material forms a plug of OPL material within an aperture that protects underlying material or electronic device such as a deep trench capacitor during other manufacturing processes. The OPL plug thus can absorb any differences or non-uniformity in, for example, etch rates across the chip or wafer and preserve recess dimensions previously formed. Control of a lateral component of later removal of the OPL plug by etching also can increase tolerance of overlay error in forming connections and thus avoid loss in manufacturing yield.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: June 16, 2015
    Assignee: International Business Machines Corporation
    Inventors: Colin J. Brodsky, Anne C. Friedman, Herbert Lei Ho, Byeong Yeol Kim, Dan Mihai Mocuta, Garrett W. Oakley, Chienfan Yu
  • Publication number: 20150145102
    Abstract: An integrated circuit structure provides at least one metal-insulator-metal (MIM) capacitor and a moat isolation structure wherein the number of processes required is substantially minimized and the formation of the MIM capacitor and the moat isolation structure effectively decouple while the number of processes common to the moat isolation structure and the MIM capacitor are maximized. Additional required processes are non-critical and tolerant of overlay positioning error.
    Type: Application
    Filed: November 22, 2013
    Publication date: May 28, 2015
    Applicant: International Business Machines Corporation
    Inventors: Thomas Walter Dyer, Herbert Lei Ho, Jin Liu
  • Publication number: 20150102463
    Abstract: Partial removal of organic planarizing layer (OPL) material forms a plug of OPL material within an aperture that protects underlying material or electronic device such as a deep trench capacitor during other manufacturing processes. The OPL plug thus can absorb any differences or non-uniformity in, for example, etch rates across the chip or wafer and preserve recess dimensions previously formed. control of a lateral component of later removal of the OPL plug by etching also can increase tolerance of overlay error in forming connections and thus avoid loss in manufacturing yield.
    Type: Application
    Filed: December 22, 2014
    Publication date: April 16, 2015
    Inventors: Colin J. Brodsky, Anne C. Friedman, Herbert Lei Ho, Byeong Yeol Kim, Dan Mihai Mocuta, Garrett W. Oakley, Chienfan Yu
  • Publication number: 20140191366
    Abstract: Partial removal of organic planarizing layer (OPL) material forms a plug of OPL material within an aperture that protects underlying material or electronic device such as a deep trench capacitor during other manufacturing processes. The OPL plug thus can absorb any differences or non-uniformity in, for example, etch rates across the chip or wafer and preserve recess dimensions previously formed. control of a lateral component of later removal of the OPL plug by etching also can increase tolerance of overlay error in forming connections and thus avoid loss in manufacturing yield.
    Type: Application
    Filed: January 10, 2013
    Publication date: July 10, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Colin J. Brodsky, Anne C. Friedman, Herbert Lei Ho, Byeong Yeol Kim, Dan Mihai Mocuta, Garrett W. Oakley, Chienfan Yu
  • Patent number: 8642440
    Abstract: An improved semiconductor capacitor and method of fabrication is disclosed. Embodiments utilize a deep trench which is then processed by performing a pre-amorphous implant on the trench interior to transform the interior surface of the trench to amorphous silicon which eliminates the depletion region that can degrade capacitor performance.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: February 4, 2014
    Assignee: International Business Machines Corporation
    Inventors: Chengwen Pei, Roger Allen Booth, Jr., Herbert Lei Ho, Naoyoshi Kusaba
  • Publication number: 20130099354
    Abstract: An improved semiconductor capacitor and method of fabrication is disclosed. Embodiments utilize a deep trench which is then processed by performing a pre-amorphous implant on the trench interior to transform the interior surface of the trench to amorphous silicon which eliminates the depletion region that can degrade capacitor performance.
    Type: Application
    Filed: October 24, 2011
    Publication date: April 25, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Chengwen Pei, Roger Allen Booth, JR., Herbert Lei Ho, Naoyoshi Kusaba
  • Patent number: 8343864
    Abstract: A semiconductor circuit and method of fabrication is disclosed. In one embodiment, the semiconductor circuit comprises a metal-insulator-metal trench capacitor in a silicon substrate. A field effect transistor is disposed on the silicon substrate adjacent to the metal-insulator-metal trench capacitor, and a silicide region is disposed between the field effect transistor and the metal-insulator-metal trench capacitor. Electrical connectivity between the transistor and capacitor is achieved without the need for a buried strap.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: January 1, 2013
    Assignee: International Business Machines Corporation
    Inventors: Puneet Goyal, Herbert Lei Ho, Pradeep Jana, Jin Liu
  • Publication number: 20120248522
    Abstract: A semiconductor circuit and method of fabrication is disclosed. In one embodiment, the semiconductor circuit comprises a metal-insulator-metal trench capacitor in a silicon substrate. A field effect transistor is disposed on the silicon substrate adjacent to the metal-insulator-metal trench capacitor, and a silicide region is disposed between the field effect transistor and the metal-insulator-metal trench capacitor. Electrical connectivity between the transistor and capacitor is achieved without the need for a buried strap.
    Type: Application
    Filed: March 28, 2011
    Publication date: October 4, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Puneet Goyal, Herbert Lei Ho, Pradeep Jana, Jin Liu
  • Patent number: 8159040
    Abstract: A semiconductor structure and a method for fabricating the semiconductor structure provide a field effect device located and formed upon an active region of a semiconductor substrate and at least one of a fuse structure, an anti-fuse structure and a resistor structure located and formed at least in part simultaneously upon an isolation region laterally separated from the active region within the semiconductor substrate. The field effect device includes a gate dielectric comprising a high dielectric constant dielectric material and a gate electrode comprising a metal material. The at least one of the fuse structure, anti-fuse structure and resistor structure includes a pad dielectric comprising the same material as the gate dielectric, and optionally, also a fuse, anti-fuse or resistor that may comprise the same metal material as the gate electrode.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: April 17, 2012
    Assignee: International Business Machines Corporation
    Inventors: Douglas D. Coolbaugh, Ebenezer E. Eshun, Ephrem G. Gebreselasie, Zhong-Xiang He, Herbert Lei Ho, Deok-kee Kim, Chandrasekharan Kothandaraman, Dan Moy, Robert Mark Rassel, John Matthew Safran, Kenneth Jay Stein, Norman Whitelaw Robson, Ping-Chuan Wang, Hongwen Yan
  • Patent number: 7682896
    Abstract: The present invention relates to a method of fabrication process which integrates the processing steps for fabricating the trench MIM capacitor with the conventional middle-of-line processing steps for fabricating metal contacts, so that the inner metallic electrode layer of the trench MIM capacitor and the metal contact of the FET or other logic circuitry components are formed by a single middle-of-line processing step and comprise essentially the same metallic material. The semiconductor device contains at least one trench metal-oxide-metal (MIM) capacitor and at least one other logic circuitry component, preferably at least one field effect transistor (FET). The trench MIM capacitor is located in a trench in a substrate and comprises inner and outer metallic electrode layers with a dielectric layer therebetween. The FET comprises a source region, a drain region, a channel region, and at least one metal contact connected with the source or drain region.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: March 23, 2010
    Assignee: International Business Machines Corporation
    Inventors: Herbert Lei Ho, Subramanian Srikanteswara Iyer, Vidhya Ramachandran
  • Publication number: 20090283840
    Abstract: A semiconductor structure and a method for fabricating the semiconductor structure provide a field effect device located and formed upon an active region of a semiconductor substrate and at least one of a fuse structure, an anti-fuse structure and a resistor structure located and formed at least in part simultaneously upon an isolation region laterally separated from the active region within the semiconductor substrate. The field effect device includes a gate dielectric comprising a high dielectric constant dielectric material and a gate electrode comprising a metal material. The at least one of the fuse structure, anti-fuse structure and resistor structure includes a pad dielectric comprising the same material as the gate dielectric, and optionally, also a fuse, anti-fuse or resistor that may comprise the same metal material as the gate electrode.
    Type: Application
    Filed: May 13, 2008
    Publication date: November 19, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Douglas D. Coolbaugh, Ebenezer E. Eshun, Ephrem G. Gebreselasie, Zhong-Xiang He, Herbert Lei Ho, Deok-kee Kim, Chandrasekharan Kothandaraman, Dan Moy, Robert Mark Rassel, John Matthew Safran, Kenneth Jay Stein, Norman Whitelaw Robson, Ping-Chuan Wang, Hongwen Yan
  • Patent number: 7564086
    Abstract: A DRAM cell in a substrate has a deep trench (DT) extending from a surface of the substrate into the substrate, a word line (WL) formed on the surface of the substrate adjacent the deep trench, and oxide (TTO) disposed in a top portion of the trench and extending beyond the trench in the direction of the word line. In this manner, when silicided, there is oxide rather than silicon on the surface of the substrate in a gap between the word line (WL) and a passing word line (PWL) disposed above the deep trench.
    Type: Grant
    Filed: December 4, 2006
    Date of Patent: July 21, 2009
    Assignee: International Business Machines Corporation
    Inventors: Oh-Jung Kwon, Kim Bosang, Herbert Lei Ho, Ali Babar Khan, Deok-kee Kim
  • Patent number: 7491994
    Abstract: In a first aspect, a first apparatus is provided. The first apparatus is a memory cell that includes (1) a semiconductor fin enclosure formed on an insulating layer of a substrate; and (2) a ferromagnetic material within the semiconductor fin enclosure. A top surface of the ferromagnetic material is below a top surface of the semiconductor fin enclosure. Numerous other aspects are provided.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: February 17, 2009
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Herbert Lei Ho, Louis Lu-Chen Hsu, Jack Allan Mandelman
  • Patent number: 7153737
    Abstract: A DRAM cell in a substrate has a deep trench (DT) extending from a surface of the substrate into the substrate, a word line (WL) formed on the surface of the substrate adjacent the deep trench, and oxide (TTO) disposed in a top portion of the trench and extending beyond the trench in the direction of the word line. In this manner, when silicided, there is oxide rather than silicon on the surface of the substrate in a gap between the word line (WL) and a passing word line (PWL) disposed above the deep trench.
    Type: Grant
    Filed: January 17, 2005
    Date of Patent: December 26, 2006
    Assignee: International Business Machines Corporation
    Inventors: Oh-Jung Kwon, Kim Bosang, Herbert Lei Ho, Babar Ali Khan, Deok-kee Kim
  • Patent number: 6553561
    Abstract: A method for generating a patterned SOI photomask used for embedded DRAMs is described. The method systematically identifies embedded DRAM areas to be excluded from the SOI process and generates the shapes to be printed on the photomask so that the embedded DRAM may be fabricated on bulk silicon. The method includes the steps of: identifying and sorting DRAM array well shapes by common electrical net, resulting in a single array well shape for each electrical net (i.e., embedded DRAM cell). Next, all the n-band contacts touching a given array well shape are collected. These shapes are merged by common electrical net. A shape is then generated which is the smallest enclosing rectangle of the common electrical net of the n-band contact shapes. This represents the patterned SOI shape and defines the bulk areas onto which the embedded DRAM is to be built. Accordingly, the embedded DRAM macro is constructed in bulk areas while the logic is constructed in SOI.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: April 22, 2003
    Assignee: International Business Machines Corporation
    Inventors: Karen Ann Bard, Herbert Lei Ho
  • Publication number: 20030028855
    Abstract: A method for generating a patterned SOI photomask used for embedded DRAMs is described. The method systematically identifies embedded DRAM areas to be excluded from the SOI process and generates the shapes to be printed on the photomask so that the embedded DRAM may be fabricated on bulk silicon. The method includes the steps of: identifying and sorting DRAM array well shapes by common electrical net, resulting in a single array well shape for each electrical net (i.e., embedded DRAM cell). Next, all the n-band contacts touching a given array well shape are collected. These shapes are merged by common electrical net. A shape is then generated which is the smallest enclosing rectangle of the common electrical net of the n-band contact shapes. This represents the patterned SOI shape and defines the bulk areas onto which the embedded DRAM is to be built. Accordingly, the embedded DRAM macro is constructed in bulk areas while the logic is constructed in SOI.
    Type: Application
    Filed: August 2, 2001
    Publication date: February 6, 2003
    Inventors: Karen Ann Bard, Herbert Lei Ho
  • Patent number: 6153474
    Abstract: The present invention includes a method and system to increase the deep trench sidewall surface area in a storage node on a DRAM chip. By tilting the trenches the capacitance is increased without taking up more space on the semiconductor chip.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: November 28, 2000
    Assignee: International Business Machines Corporation
    Inventors: Herbert Lei Ho, Radhika Srinivasan, Scott D. Halle, Erwin Hammerl, David M. Dobuzinsky, Jack Allan Mandelman, Mark Anthony Jaso
  • Patent number: 6015985
    Abstract: The present invention includes a method and system to increase the deep trench sidewall surface area in a storage node on a DRAM chip. By tilting the trenches the capacitance is increased without taking up more space on the semiconductor chip.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: January 18, 2000
    Assignee: International Business Machines Corporation
    Inventors: Herbert Lei Ho, David Edward Kotecki, Carl John Radens
  • Patent number: 6014310
    Abstract: A composite dielectric material useful in advanced memory applications such as dynamic random access memory (DRAM) cells is provided. The composite dielectric material of the present invention includes a mixed oxide such as TiO.sub.2 or Ta.sub.2 O.sub.5 that is interdiffused into a Si.sub.3 N.sub.4 film. Capacitors including the composite dielectric material of the present invention are also disclosed.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: January 11, 2000
    Assignee: International Business Machines Corporation
    Inventors: Gary Bela Bronner, Stephan Alan Cohen, David Mark Dobuzinsky, Jeffrey Peter Gambino, Herbert Lei Ho, Karen Popek Madden