Patents by Inventor Louis Lu-chen Hsu

Louis Lu-chen Hsu 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: 7659178
    Abstract: Semiconductor device structures with reduced junction capacitance and drain induced barrier lowering, methods for fabricating such device structures, and methods for forming a semiconductor-on-insulator substrate. The semiconductor structure comprises a semiconductor layer and a dielectric layer disposed between the semiconductor layer and the substrate. The dielectric layer includes a first dielectric region with a first dielectric constant and a second dielectric region with a second dielectric constant that is greater than the first dielectric constant. In one embodiment, the dielectric constant of the first dielectric region may be less than about 3.9 and the dielectric constant of the second dielectric region may be greater than about ten (10). The semiconductor-on-insulator substrate comprises a semiconductor layer separated from a bulk layer by an insulator layer of a high-dielectric constant material.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: February 9, 2010
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Louis Lu-Chen Hsu, Jack Allan Mandelman, Haining Yang
  • Patent number: 7659599
    Abstract: In an aspect, a method is provided for forming a silicon-on-insulator (SOI) layer. The method includes the steps of (1) providing a silicon substrate; (2) selectively implanting the silicon substrate with oxygen using a low implant energy to form an ultra-thin patterned seed layer; and (3) employing the ultra-thin patterned seed layer to form a patterned SOI layer on the silicon substrate. Numerous other aspects are provided.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: February 9, 2010
    Assignee: International Business Machines Corporation
    Inventors: Roger Allen Booth, Jr., Louis Lu-Chen Hsu, Jack A. Mandelman, William R. Tonti
  • Patent number: 7651929
    Abstract: A semiconductor structure with an insulating layer on a silicon substrate, a plurality of electrically-isolated silicon-on-insulator (SOI) regions separated from the substrate by the insulating layer, and a plurality of electrically-isolated silicon bulk regions extending through the insulating layer to the substrate. Each of one number of the SOI regions is oriented with a first crystal orientation and each of another number of the SOI regions is oriented with a second crystal orientation that differs from the first crystal orientation. The bulk silicon regions are each oriented with a third crystal orientation. Damascene or imprinting methods of forming the SOI regions and bulk silicon regions are also provided.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: January 26, 2010
    Assignee: International Business Machines Corporation
    Inventors: Louis Lu-Chen Hsu, Jack Allan Mandelman, William Robert Tonti
  • Patent number: 7645645
    Abstract: Electrically programmable fuse structures for an integrated circuit and methods of fabrication thereof are presented, wherein the electrically programmable fuse has a first terminal portion and a second terminal portion interconnected by a fuse element. The first terminal portion and the second terminal portion reside at different heights relative to a supporting surface of the fuse structure, and the interconnecting fuse element transitions between the different heights of the first terminal portion and the second terminal portion. The first and second terminal portions are oriented parallel to the supporting surface, while the fuse element includes a portion oriented orthogonal to the supporting surface, and includes at least one right angle bend where transitioning from at least one of the first and second terminal portions to the orthogonal oriented portion of the fuse element.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: January 12, 2010
    Assignee: International Business Machines Corporation
    Inventors: William P. Hovis, Louis Lu-Chen Hsu, Jack A. Mandelman, William R. Tonti, Chih-Chao Yang
  • Patent number: 7622946
    Abstract: A design structure for an impedance matcher that automatically matches impedance between a driver and a receiver. The design structure for an impedance matcher includes a phase-locked loop (PLL) circuit that locks onto a data signal provided by the driver. The impedance matcher also includes tunable impedance matching circuitry responsive to one or more voltage-controlled oscillator control signals within the PLL circuit so as to generate an output signal that is impedance matched with the receiver.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: November 24, 2009
    Assignee: International Business Machines Corporation
    Inventors: Wagdi W. Abadeer, Louis Lu-Chen Hsu, Jack A. Mandelman
  • Patent number: 7624289
    Abstract: A structure and method for power distribution to a network for an integrated circuit chip complex are provided. The chip complex has at least two sectors, each having at least one power providing connection with at least one of said connections beings individually addressable by, and isolatable from, a given power source. At least one MEMS is positioned to selectively connect and disconnect said at least one connection to and from said given power source.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: November 24, 2009
    Assignee: International Business Machines Corporation
    Inventors: Hayden C. Cranford, Jr., Louis Lu-Chen Hsu, James S. Mason
  • Patent number: 7618872
    Abstract: Semiconductor device structures for use with bipolar junction transistors and methods of fabricating such semiconductor device structures. The semiconductor device structure comprises a semiconductor body having a top surface and sidewalls extending from the top surface to an insulating layer, a first region including a first semiconductor material with a first conductivity type, and a second region including a second semiconductor material with a second conductivity type. The first and second regions each extend across the top surface and the sidewalls of the semiconductor body. The device structure further comprises a junction defined between the first and second regions and extending across the top surface and the sidewalls of the semiconductor body.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: November 17, 2009
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Louis Lu-Chen Hsu, Jack Allan Mandelman
  • Patent number: 7608506
    Abstract: A semiconductor structure for a dynamic random access memory (DRAM) cell array that includes a plurality of vertical memory cells built on a semiconductor-on-insulator (SOI) wafer and a body contact in the buried dielectric layer of the SOI wafer. The body contact electrically couples a semiconductor body with a channel region of the access device of one vertical memory cell and a semiconductor substrate of the SOI wafer. The body contact provides a current leakage path that reduces the impact of floating body effects upon the vertical memory cell. The body contact may be formed by an ion implantation process that modifies the stoichiometry of a region of the buried dielectric layer so that the modified region becomes electrically conductive with a relatively high resistance.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: October 27, 2009
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Louis Lu-Chen Hsu, Jack Allan Mandelman
  • Patent number: 7569434
    Abstract: In a first aspect, a first method of manufacturing a PFET on a substrate is provided. The first method includes the steps of (1) forming a gate channel region of the PFET having a first thickness on the substrate; and (2) forming at least one composite source/drain diffusion region of the PFET having a second thickness greater than the first thickness on the substrate. The at least one composite source/drain diffusion region is adapted to cause a strain in the gate channel region. Further, significantly all of the at least one composite source/drain diffusion region is below a bottom surface of a gate of the PFET. Numerous other aspects are provided.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: August 4, 2009
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Louis Lu-Chen Hsu, Jack Allan Mandelman, Haining Yang
  • Patent number: 7566629
    Abstract: In an aspect, a method is provided for forming a silicon-on-insulator (SOI) layer. The method includes the steps of (1) providing a silicon substrate; (2) selectively implanting the silicon substrate with oxygen using a low implant energy to form an ultra-thin patterned seed layer; and (3) employing the ultra-thin patterned seed layer to form a patterned SOI layer on the silicon substrate. Numerous other aspects are provided.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: July 28, 2009
    Assignee: International Business Machines Corporation
    Inventors: Roger Allen Booth, Jr., Louis Lu-Chen Hsu, Jack A. Mandelman, William R. Tonti
  • Patent number: 7560784
    Abstract: Embodiments of the invention generally relate to the field of semiconductor devices, and more specifically to fin-based junction diodes. A portion of a doped semiconductor fin may protrude through a first doped layer. An intrinsic layer may be disposed on the protruding semiconductor fin. A second semiconductor layer may be disposed on the intrinsic layer, thereby forming a PIN diode compatible with FinFET technology and having increased junction area.
    Type: Grant
    Filed: February 1, 2007
    Date of Patent: July 14, 2009
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Louis Lu-Chen Hsu, Jack Allan Mandelman
  • Patent number: 7545253
    Abstract: An electronic fuse for an integrated circuit and a method of fabrication thereof are presented. The electronic fuse has a first terminal portion and a second terminal portion interconnected by a fuse element. The fuse element has a convex upper surface and a lower surface with a radius of curvature at a smallest surface area of curvature less than or equal to 100 nanometers. Fabricating the electronic fuse includes forming an at least partially freestanding dielectric spacer above a supporting structure, and then conformably forming the fuse element of the fuse over at least a portion of the freestanding dielectric spacer, with the fuse element characterized as noted above. The dielectric spacer may remain in place as a thermally insulating layer underneath the fuse element, or may be removed to form a void underneath the fuse element.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: June 9, 2009
    Assignee: International Business Machines Corporation
    Inventors: Louis Lu-Chen Hsu, Jack A. Mandelman, William R. Tonti, Chih-Chao Yang
  • Publication number: 20090121312
    Abstract: A semiconductor processing method includes providing a substrate, forming a plurality of semiconductor layers in the substrate, each of the semiconductor layers being distinct and selected from different groups of semiconductor element types. The semiconductor layers include a first, second, and third semiconductor layers. The method further includes forming a plurality of lateral void gap isolation regions for isolating portions of each of the semiconductor layers from portions of the other semiconductor layers.
    Type: Application
    Filed: January 31, 2008
    Publication date: May 14, 2009
    Inventors: Howard Hao Chen, Louis Lu-Chen Hsu, Jack Allan Mandelman
  • Patent number: 7531423
    Abstract: In a first aspect, a first method of manufacturing a finFET is provided. The first method includes the steps of (1) providing a substrate; and (2) forming at least one source/drain diffusion region of the finFET on the substrate. Each source/drain diffusion region includes (a) an interior region of unsilicided silicon; and (b) silicide formed on a top surface and sidewalls of the region of unsilicided silicon. Numerous other aspects are provided.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: May 12, 2009
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Louis Lu-Chen Hsu, Jack Allan Mandelman, Haining Yang
  • Publication number: 20090115448
    Abstract: A design structure for an impedance matcher that automatically matches impedance between a driver and a receiver. The design structure for an impedance matcher includes a phase-locked loop (PLL) circuit that locks onto a data signal provided by the driver. The impedance matcher also includes tunable impedance matching circuitry responsive to one or more voltage-controlled oscillator control signals within the PLL circuit so as to generate an output signal that is impedance matched with the receiver.
    Type: Application
    Filed: November 5, 2007
    Publication date: May 7, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Wagdi W. Abadeer, Louis Lu-Chen Hsu, Jack A. Mandelman
  • Patent number: 7525121
    Abstract: In a first aspect, a first method is provided for semiconductor device manufacturing. The first method includes the steps of (1) providing a substrate; and (2) forming a first silicon-on-insulator (SOI) region having a first crystal orientation, a second SOI region having a second crystal orientation and a third SOI region having a third crystal orientation on the substrate. The first, second and third SOI regions are coplanar. Numerous other aspects are provided.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: April 28, 2009
    Assignee: International Business Machines Corporation
    Inventors: Louis Lu-Chen Hsu, Jack A. Mandelman
  • Patent number: 7525170
    Abstract: An arrangement of pillar shaped p-i-n diodes having a high aspect ration are formed on a semiconductor substrate. Each device is formed by an intrinsic or lightly doped region (i-region) positioned between a P+ region and an N+ region at each end of the pillar. The arrangement of pillar p-i-n diodes is embedded in an optical transparent medium. For a given surface area, more light energy is absorbed by the pillar arrangement of p-i-n diodes than by conventional planar p-i-n diodes. The pillar p-i-n diodes are preferably configured in an array formation to enable photons reflected from one pillar p-i-n diode to be captured and absorbed by another p-i-n diode adjacent to the first one, thereby optimizing the efficiency of energy conversion.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: April 28, 2009
    Assignee: International Business Machines Corporation
    Inventors: Louis Lu-Chen Hsu, Jack A. Mandelman, Kangguo Cheng
  • Patent number: 7515502
    Abstract: A method for using photolithographic dummy memory cells arranged in rings around a set of primary memory cells as test structures and as redundant memory cells. Also circuits and structures of memory arrays having multiple-use dummy memory cells.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: April 7, 2009
    Assignee: International Business Machines Corporation
    Inventors: Ishtiaq Ahsan, Louis Lu-Chen Hsu, Xu Ouyang
  • Publication number: 20090073796
    Abstract: A method for using photolithographic dummy memory cells arranged in rings around a set of primary memory cells as test structures and as redundant memory cells. Also circuits and structures of memory arrays having multiple-use dummy memory cells.
    Type: Application
    Filed: September 18, 2007
    Publication date: March 19, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ishtiaq Ahsan, Louis Lu-Chen Hsu, Xu Ouyang
  • Patent number: 7494916
    Abstract: Design structure embodied in a machine readable medium for designing, manufacturing, or testing a design. The design structure includes an interconnect structure with a liner formed on roughened dielectric material in an insulating layer and a conformal liner repair layer bridging that breaches in the liner. The conformal liner repair layer is formed of a conductive material, such as a cobalt-containing material. The conformal liner repair layer may be particularly useful for repairing discontinuities in a conductive liner disposed on roughened dielectric material bordering the trenches and vias of damascene interconnect structures.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: February 24, 2009
    Assignee: International Business Machines Corporation
    Inventors: Louis Lu-Chen Hsu, Jack Allan Mandelman, William Robert Tonti, Chih-Chao Yang