Patents by Inventor Zhong Xiang

Zhong Xiang 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: 20120187536
    Abstract: A high density capacitor and low density capacitor simultaneously formed on a single wafer and a method of manufacture is provided. The method includes depositing a bottom plate on a dielectric material; depositing a low-k dielectric on the bottom plate; depositing a high-k dielectric on the low-k dielectric and the bottom plate; depositing a top plate on the high-k dielectric; and etching a portion of the bottom plate and the high-k dielectric to form a first metal-insulator-metal (MIM) capacitor having a dielectric stack with a first thickness and a second MIM capacitor having a dielectric stack with a second thickness different than the first thickness.
    Type: Application
    Filed: March 22, 2012
    Publication date: July 26, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: James S. DUNN, Zhong - Xiang HE, Anthony K. STAMPER
  • Patent number: 8227849
    Abstract: The invention is directed to an improved capacitor that reduces edge defects and prevents yield failures. A first embodiment of the invention comprises a protective layer adjacent an interface of a conductive layer with the insulator, while the second embodiment of the invention comprises a protective layer on an insulator which is on a conductive layer.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: July 24, 2012
    Assignee: International Business Machines Corporation
    Inventors: Ebenezer E Eshun, Ronald J Bolam, Douglas D Coolbaugh, Keith E Downes, Natalie B Feilchenfeld, Zhong-Xiang He
  • Patent number: 8227300
    Abstract: A semiconductor circuit includes a plurality of semiconductor devices, each including a semiconductor islands having at least one electrical dopant atom and located on an insulator layer. Each semiconductor island is encapsulated by dielectric materials including at least one dielectric material portion. Conductive material portions, at least one of which abut two dielectric material portions that abut two distinct semiconductor islands, are located directly on the at least one dielectric material layer. At least one gate conductor is provided which overlies at least two semiconductor islands. Conduction across a dielectric material portion between a semiconductor island and a conductive material portion is effected by quantum tunneling. The conductive material portions and the at least one gate conductor are employed to form a semiconductor circuit having a low leakage current. A design structure for the semiconductor circuit is also provided.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: July 24, 2012
    Assignee: International Business Machines Corporation
    Inventors: Zhong-Xiang He, Qizhi Liu
  • Publication number: 20120184081
    Abstract: A method of fabricating a MIM capacitor is provided. The method includes providing a substrate including a dielectric layer formed on a first conductive layer and a second conductive layer formed over the dielectric layer, and patterning a mask on the second conductive layer. Exposed portions of the second conductive layer are removed to form an upper plate of a MIM capacitor having edges substantially aligned with respective edges of the mask. The upper plate is undercut so that edges of the upper plate are located under the mask. Exposed portions of the dielectric layer and the first conductive layer are removed using the mask to form a capacitor dielectric layer and a lower plate of the MIM capacitor having edges substantially aligned with respective edges of the mask.
    Type: Application
    Filed: March 28, 2012
    Publication date: July 19, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Anil K. CHINTHAKINDI, Douglas D. COOLBAUGH, Keith E. DOWNES, Ebenezer E. ESHUN, Zhong-Xiang HE, Robert M. RASSEL, Anthony K. STAMPER
  • Patent number: 8221965
    Abstract: Antireflective coating compositions and related polymers are disclosed.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: July 17, 2012
    Assignee: AZ Electronic Materials USA Corp.
    Inventors: Huirong Yao, Zhong Xiang, Jianhui Shan, Salem Mullen, Hengpeng Wu
  • Publication number: 20120161299
    Abstract: A CMOS image sensor pixel includes a conductive light shield, which is located between a first dielectric layer and a second dielectric layer. At least one via extends from a top surface of the second dielectric layer to a bottom surface of the first dielectric layer is formed in the metal interconnect structure. The conductive light shield may be formed within a contact level between a top surface of a semiconductor substrate and a first metal line level, or may be formed in any metal interconnect via level between two metal line levels. The inventive CMOS image sensor pixel enables reduction of noise in the signal stored in the floating drain.
    Type: Application
    Filed: February 29, 2012
    Publication date: June 28, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Jeffrey P. Gambino, Zhong-Xiang He, Kevin N. Ogg, Richard J. Rassel, Robert M. Rassel
  • Patent number: 8207568
    Abstract: Method of fabricating a MIM capacitor and MIM capacitor. The method includes providing a substrate including a dielectric layer formed on a first conductive layer and a second conductive layer formed over the dielectric layer, and patterning a mask on the second conductive layer. Exposed portions of the second conductive layer are removed to form an upper plate of a MIM capacitor having edges substantially aligned with respective edges of the mask. The upper plate is undercut so that edges of the upper plate are located under the mask. Exposed portions of the dielectric layer and the first conductive layer are removed using the mask to form a capacitor dielectric layer and a lower plate of the MIM capacitor having edges substantially aligned with respective edges of the mask.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: June 26, 2012
    Assignee: International Business Machines Corporation
    Inventors: Anil K. Chinthakindi, Douglas D. Coolbaugh, Keith E. Downes, Ebenezer E. Eshun, Zhong-Xiang He, Robert M. Rassel, Anthony K. Stamper
  • Patent number: 8191217
    Abstract: A high density capacitor and low density capacitor simultaneously formed on a single wafer and a method of manufacture is provided. The method includes depositing a bottom plate on a dielectric material; depositing a low-k dielectric on the bottom plate; depositing a high-k dielectric on the low-k dielectric and the bottom plate; depositing a top plate on the high-k dielectric; and etching a portion of the bottom plate and the high-k dielectric to form a first metal-insulator-metal (MIM) capacitor having a dielectric stack with a first thickness and a second MIM capacitor having a dielectric stack with a second thickness different than the first thickness.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: June 5, 2012
    Assignee: International Business Machines Corporation
    Inventors: James S. Dunn, Zhong-Xiang He, Anthony K. Stamper
  • Publication number: 20120132992
    Abstract: A first field effect transistor includes a gate dielectric and a gate electrode located over a first portion of a top semiconductor layer in a semiconductor-on-insulator (SOI) substrate. A second field effect transistor includes a portion of a buried insulator layer and a source region and a drain region located underneath the buried insulator layer. In one embodiment, the gate electrode of the second field effect transistor is a remaining portion of the top semiconductor layer. In another embodiment, the gate electrode of the second field effect transistor is formed concurrently with the gate electrode of the first field effect transistor by deposition and patterning of a gate electrode layer. The first field effect transistor may be a high performance device and the second field effect transistor may be a high voltage device. A design structure for the semiconductor structure is also provided.
    Type: Application
    Filed: February 7, 2012
    Publication date: May 31, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hanyi Ding, Kai D. Feng, Zhong-Xiang He, Zhenrong Jin, Xuefeng Liu, Yun Shi
  • Publication number: 20120104546
    Abstract: Structures with high-Q value inductors, design structure for high-Q value inductors and methods of fabricating such structures is disclosed herein. A method in a computer-aided design system for generating a functional design model of an inductor is also provided. The method includes: generating a functional representation of a plurality of vertical openings simultaneously formed in a substrate, wherein a first of the plurality of vertical openings is used as through silicon vias and is etched deeper than a second of the plurality of vertical openings used for high-Q inductors; generating a functional representation of a dielectric layer formed in the plurality of vertical openings; and generating a functional representation of a metal layer deposited on the dielectric layer in the plurality of vertical.
    Type: Application
    Filed: November 1, 2010
    Publication date: May 3, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hanyi DING, Mete ERTURK, Robert A. GROVES, Zhong-Xiang HE, Peter J. LINGREN, Anthony K. STAMPER
  • Patent number: 8171435
    Abstract: Disclosed are embodiments of a circuit (e.g., an electrostatic discharge (ESD) circuit), a design methodology and a design system. In the circuit, an ESD device is wired to a first metal level (e.g., M1). An inductor is formed in a second metal level (e.g., M5) above the first metal level and is aligned over and electrically connected in parallel to the ESD device by a single vertical via stack. The inductor is configured to nullify, for a given application frequency, the capacitance value of the ESD device. The quality factor of the inductor is optimized by providing, on a third metal level (e.g., M3) between the second metal level and the first metal level, a shield to minimize inductive coupling. An opening in the shield allows the via stack to pass through, trading off Q factor reduction for size-scaling and ESD robustness improvements.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: May 1, 2012
    Assignee: International Business Machines Corporation
    Inventors: Zhong-Xiang He, Robert M. Rassel, Steven H. Voldman
  • 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: 8158988
    Abstract: A CMOS image sensor pixel includes a conductive light shield, which is located between a first dielectric layer and a second dielectric layer. At least one via extends from a top surface of the second dielectric layer to a bottom surface of the first dielectric layer is formed in the metal interconnect structure. The conductive light shield may be formed within a contact level between a top surface of a semiconductor substrate and a first metal line level, or may be formed in any metal interconnect via level between two metal line levels. The inventive CMOS image sensor pixel enables reduction of noise in the signal stored in the floating drain.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: April 17, 2012
    Assignee: International Business Machines Corporation
    Inventors: Jeffrey P. Gambino, Zhong-Xiang He, Kevin N. Ogg, Richard J. Rassel, Robert M. Rassel
  • Publication number: 20120086101
    Abstract: The disclosure relates generally to integrated circuits (IC), IC interconnects, and methods of fabricating the same, and more particularly, high performance inductors. The IC includes at least one trench within a dielectric layer disposed on a substrate. The trench is conformally coated with a liner and seed layer, and includes an interconnect within. The interconnect includes a hard mask on the sidewalls of the interconnect.
    Type: Application
    Filed: October 6, 2010
    Publication date: April 12, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: David A. DeMuynck, Zhong-Xiang He, Daniel R. Miga, Matthew D. Moon, Daniel S. Vanslette, Eric J. White
  • Publication number: 20120070979
    Abstract: The disclosure relates generally to semiconductor device fabrication, and more particularly to methods of electroplating used in semiconductor device fabrication. A method of electroplating includes: immersing an in-process substrate into an electrolytic plating solution to form a first metal layer on the in-process substrate; then performing a first chemical-mechanical polish to a liner on the in-process substrate followed by immersing the in-process substrate into the electrolytic plating solution to form a second metal layer on the first metal layer and the liner; and performing a second chemical-mechanical polish to the liner.
    Type: Application
    Filed: September 22, 2010
    Publication date: March 22, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Felix P. Anderson, Zhong-Xiang He, Anthony K. Stamper, Eric J. White
  • Publication number: 20120061801
    Abstract: A method of making a semiconductor structure includes forming at least a first trench and a second trench having different depths in a substrate, forming a capacitor in the first trench, and forming a via in the second trench. A semiconductor structure includes a capacitor arranged in a first trench formed in a substrate and a via arranged in a second trench formed in the substrate. The first and second trenches have different depths in the substrate.
    Type: Application
    Filed: November 22, 2011
    Publication date: March 15, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: David S. COLLINS, Kai D. FENG, Zhong-Xiang HE, Peter J. LINDGREN, Robert M. RASSEL
  • Patent number: 8129844
    Abstract: Electronic devices and design structures of electronic devices containing metal silicide layers. The devices include: a thin silicide layer between two dielectric layers, at least one metal wire abutting a less than whole region of the silicide layer and in electrical contact with the silicide layer.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: March 6, 2012
    Assignee: International Business Machines Corporation
    Inventors: Felix Patrick Anderson, Zhong-Xiang He, Thomas Leddy McDevitt, Eric Jeffrey White
  • Patent number: 8125013
    Abstract: A semiconductor structure and design structure includes at least a first trench and a second trench having different depths arranged in a substrate, a capacitor arranged in the first trench, and a via arranged in the second trench.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: February 28, 2012
    Assignee: International Business Machines Corporation
    Inventors: David S. Collins, Kai D. Feng, Zhong-Xiang Ile, Peter J. Lindgren, Robert M. Rassel
  • Patent number: 8120110
    Abstract: A first field effect transistor includes a gate dielectric and a gate electrode located over a first portion of a top semiconductor layer in a semiconductor-on-insulator (SOI) substrate. A second field effect transistor includes a portion of a buried insulator layer and a source region and a drain region located underneath the buried insulator layer. In one embodiment, the gate electrode of the second field effect transistor is a remaining portion of the top semiconductor layer. In another embodiment, the gate electrode of the second field effect transistor is formed concurrently with the gate electrode of the first field effect transistor by deposition and patterning of a gate electrode layer. The first field effect transistor may be a high performance device and the second field effect transistor may be a high voltage device. A design structure for the semiconductor structure is also provided.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: February 21, 2012
    Assignee: International Business Machines Corporation
    Inventors: Hanyi Ding, Kai D. Feng, Zhong-Xiang He, Zhenrong Jin, Xuefeng Liu, Yun Shi
  • Publication number: 20120038037
    Abstract: Semiconductor structures with airgaps and/or metal linings and methods of manufacture are provided. The method of forming an airgap in a wiring level includes forming adjacent wires in a dielectric layer. The method further includes forming a masking layer coincident with the adjacent wire and forming a first layer on the masking layer to reduce a size of an opening formed in the masking layer between the adjacent wires. The method further includes removing exposed portions of the first layer and the dielectric layer to form trenches between the adjacent wires. The method further includes forming an interlevel dielectric layer upon the dielectric layer, where the interlevel dielectric layer is pinched off from filling the trenches so that an airgap is formed between the adjacent wires. A metal liner can also be formed in the trenches, prior to the formation of the airgap.
    Type: Application
    Filed: August 13, 2010
    Publication date: February 16, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Fen Chen, Zhong-Xiang He, Anthony K. Stamper