Patents by Inventor Louis Lu

Louis Lu 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: 7736949
    Abstract: A semiconductor package includes an SOI wafer having a first side including an integrated circuit system, and a second side, opposite the first side, forming at least one cavity. At least one chip or component is placed in the cavity. An optical through via is formed through a buried oxide which optically connects the chip(s) to the integrated circuit system.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: June 15, 2010
    Assignee: International Business Machines Corporation
    Inventors: Howard Hao Chen, Louis Lu-Chen Hsu
  • Patent number: 7732322
    Abstract: In a first aspect, a first method of manufacturing a dielectric material with a reduced dielectric constant is provided. The first method includes the steps of (1) forming a dielectric material layer including a trench on a substrate; and (2) forming a cladding region in the dielectric material layer by forming a plurality of air gaps in the dielectric material layer along at least one of a sidewall and a bottom of the trench so as to reduce an effective dielectric constant of the dielectric material. Numerous other aspects are provided.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: June 8, 2010
    Assignee: International Business Machines Corporation
    Inventors: Louis Lu-Chen Hsu, Jack Allan Mandelman, Chih-Chao Yang
  • Patent number: 7714452
    Abstract: An electrical structure and method comprising a first substrate electrically and mechanically connected to a second substrate. The first substrate comprises a first electrically conductive pad and a second electrically conductive pad. The second substrate comprises a third electrically conductive pad, a fourth electrically conductive pad, and a first electrically conductive member. The fourth electrically conductive pad comprises a height that is different than a height of the first electrically conductive member. The electrically conductive member is electrically and mechanically connected to the fourth electrically conductive pad. A first solder ball connects the first electrically conductive pad to the third electrically conductive pad. The first solder ball comprises a first diameter. A second solder ball connects the second electrically conductive pad to the first electrically conductive member. The second solder ball comprises a second diameter. The first diameter is greater than said second diameter.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: May 11, 2010
    Assignee: International Business Machines Corporation
    Inventors: Lawrence A. Clevenger, Mukta Ghate Farooq, Louis Lu-Chen Hsu, William Francis Landers, Donna S. Zupanski-Nielson, Carl John Radens, Chih-Chao Yang
  • Patent number: 7687865
    Abstract: A method (and system) of reducing contact resistance on a silicon-on-insulator device, including controlling a silicide depth in a source-drain region of the device.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: March 30, 2010
    Assignee: International Business Machines Corporation
    Inventors: Brian J. Greene, Louis Lu-Chen Hsu, Jack Allan Mandelman, Chun-Yung Sung
  • Patent number: 7682913
    Abstract: A process for making a MCSFET includes providing a first implant through a first side of an elongated stack, and then providing a second implant through a second side of the stack. The first implant has a dose different than the dose of the second implant, so that final dopant concentrations in the first and second sides differ and the transistor has two threshold voltages Vt1, Vt2.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: March 23, 2010
    Assignee: International Business Machines Corporation
    Inventors: Xu Ouyang, Louis Lu-Chen Hsu, Xinhui Wang, Haizhou Yin
  • Patent number: 7666781
    Abstract: Interconnect structures including liner layers that are non-planar with at least the adjacent insulating layer and at least one capping layer on conductive features embedded in the insulating layer. The interconnect structure includes an insulating layer of a dielectric material having a top surface and a bottom surface between the top surface and a substrate. An opening, such as a trench, has sidewalls extending from the top surface of the insulating layer toward the bottom surface and is at least partially filled by a conductive feature. A capping layer is disposed on at least a top surface of the conductive feature. A conductive liner layer is disposed between the insulating layer and the conductive feature along at least the sidewalls of the opening. The conductive liner layer has sidewall portions projecting above the top surface of the insulating layer adjacent to the sidewalls of the opening.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: February 23, 2010
    Assignee: International Business Machines Corporation
    Inventors: Louis Lu-Chen Hsu, Jack Allan Mandelman, William Robert Tonti, Chih-Chao Yang
  • Publication number: 20100039191
    Abstract: An apparatus and method for manufacturing low-cost high-density compact active inductor module using existing DRAM, SRAM and logic process integration. The elements of the active inductor modules are formed by three semiconductor devices including nMOS devices, deep-trench capacitors and a polysilicon or TaN resistor. The active inductor modules can be connected in a parallel and/or serial configuration to obtain a wide range of inductance values. The modular active inductors can be advantageously stored in an ASIC library to facilitate a flexible and convenient circuit design.
    Type: Application
    Filed: August 14, 2008
    Publication date: February 18, 2010
    Applicant: International Business Machines Corporation
    Inventors: Louis Lu-Chen Hsu, Jong-Ru Guo, Ping-Chuan Wang, Zhijian Yang
  • 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: 7659168
    Abstract: In a first aspect, a first apparatus is provided. The first apparatus is an eFuse including (1) a semiconducting layer above an insulating oxide layer of a substrate; (2) a diode formed in the semiconducting layer; and (3) a silicide layer formed on the diode. Numerous other aspects are provided.
    Type: Grant
    Filed: November 3, 2005
    Date of Patent: February 9, 2010
    Assignee: International Business Machines Corporation
    Inventors: Louis Lu-Chen Hsu, Jack A. Mandelman, William R. Tonti
  • 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: 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: 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: 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