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: 7833873
    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: November 16, 2010
    Assignee: International Business Machines Corporation
    Inventors: Brian J. Greene, Louis Lu-Chen Hsu, Jack Allan Mandelman, Chun-Yung Sung
  • Publication number: 20100277210
    Abstract: a central reference clock is placed in a substantially middle chip of a 3-D chip-stack. The central reference clock is distributed to each child chip of the 3-D chip-stack, so that a plurality of clocks is generated for each individual chip in the 3-D-stack in a synchronous manner. A predetermined number of through-silicon-vias and on-chip wires are employed to form a delay element for each slave clock, ensuring that the clock generated for each child chip is substantially synchronized. Optionally, an on-chip clock trimming circuit is embedded for further precision tuning to eliminate local clock skews.
    Type: Application
    Filed: April 30, 2009
    Publication date: November 4, 2010
    Applicant: International Business Machines Corporation
    Inventors: Ping-Chuan Wang, Anthony R. Bonaccio, Jong-Ru Guo, Louis Lu-Chen Hsu
  • Patent number: 7816945
    Abstract: Programmable fuse-type through silicon vias (TSVs) in silicon chips are provided with non-programmable TSVs in the same chip. The programmable fuse-type TSVs may employ a region within the TSV structure having sidewall spacers that restrict the cross-sectional conductive path of the TSV adjacent a chip surface contact pad. Application of sufficient current by programming circuitry causes electromigration of metal to create a void in the contact pad and, thus, an open circuit. Programming may be carried out by complementary circuitry on two adjacent chips in a multi-story chip stack.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: October 19, 2010
    Assignee: International Business Machines Corporation
    Inventors: Kai Di Feng, Louis Lu-Chen Hsu, Ping-Chuan Wang, Zhijian Yang
  • Publication number: 20100261318
    Abstract: Programmable fuse-type through silicon vias (TSVs) in silicon chips are provided with non-programmable TSVs in the same chip. The programmable fuse-type TSVs may employ a region within the TSV structure having sidewall spacers that restrict the cross-sectional conductive path of the TSV adjacent a chip surface contact pad. Application of sufficient current by programming circuitry causes electromigration of metal to create a void in the contact pad and, thus, an open circuit. Programming may be carried out by complementary circuitry on two adjacent chips in a multi-story chip stack.
    Type: Application
    Filed: June 24, 2010
    Publication date: October 14, 2010
    Applicant: International Business Machines Corporation
    Inventors: Kai Di Feng, Louis Lu-Chen Hsu, Ping-Chuan Wang, Zhijian Yang
  • Patent number: 7809340
    Abstract: An apparatus is provided for implementing an enhanced hand shake protocol for microelectronic communication systems. A transmitter and a receiver is coupled together by a transmission link. The transmitter receives an idle input. The idle input is activated when the transmitter is not transmitting data and the transmitter applies a first common 10 mode level to the receiving unit. The idle input is deactivated when the transmitter is ready to transmit data and the transmitter raises the common mode level to the receiving unit. Responsive to the receiver detecting the common mode level up-movement, then the receiver receives the transmitted data signals. After the desired data has been sent, the 15 transmitter terminates communications, drops the common mode level with the idle input being activated.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: October 5, 2010
    Assignee: International Business Machines Corporation
    Inventors: Louis Lu-Chen Hsu, Jack Allan Mandelman, James Stephen Mason
  • Patent number: 7803700
    Abstract: Methods of forming semiconductor structures characterized by a thin active silicon layer on an insulating substrate by a crystal imprinting or damascene approach. The methods include patterning an insulating layer to define a plurality of apertures, filling the apertures in the patterned insulating layer with amorphous silicon to define a plurality of amorphous silicon features, and re-growing the amorphous silicon features to define a thin active silicon layer consisting of regrown silicon features. The amorphous silicon features may be regrown such that a number have a first crystal orientation and another number have a different second crystal orientation.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: September 28, 2010
    Assignee: International Business Machines Corporation
    Inventors: Louis Lu-Chen Hsu, Jack Allan Mandelman, William R. Tonti
  • Patent number: 7785934
    Abstract: A structure fabrication method. The method includes providing a structure. The structure includes (a) a substrate layer, (b) a first fuse electrode in the substrate layer, and (c) a fuse dielectric layer on the substrate layer and the first fuse electrode. The method further includes (i) forming an opening in the fuse dielectric layer such that the first fuse electrode is exposed to a surrounding ambient through the opening, (ii) forming a fuse region on side walls and bottom walls of the opening such that the fuse region is electrically coupled to the first fuse electrode, and (iii) after said forming the fuse region, filling the opening with a dielectric material.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: August 31, 2010
    Assignee: International Business Machines Corporation
    Inventors: Louis Lu-Chen Hsu, Jack Allan Mandelman, William Robert Tonti, Chih-Chao Yang
  • Patent number: 7768130
    Abstract: A method for fabricating and back-end-of-line (BEOL) metalization structures includes simultaneous high-k and low-k dielectric regions. An interconnect structure includes a first inter-level dielectric (ILD) layer and a second ILD layer with the first ILD layer underlying the second ILD layer. A plurality of columnar air gaps is formed in the first ILD. The columnar air gap structure is created using a two-phase photoresist material for providing different etching selectivity during subsequent processing.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: August 3, 2010
    Assignee: International Business Machines Corporation
    Inventors: Louis Lu-Chen Hsu, Jack Allan Mandelman, William Tonti, Chih-Chao Yang
  • Publication number: 20100182040
    Abstract: Through silicon vias (TSVs) in silicon chips are both programmable and non-programmable. The programmable TSVs may employ metal/insulator/metal structures to switch from an open to shorted condition with programming carried out by complementary circuitry on two adjacent chips in a multi-story chip stack.
    Type: Application
    Filed: January 22, 2009
    Publication date: July 22, 2010
    Applicant: International Business Machines Corporation
    Inventors: Kai Di Feng, Louis Lu-Chen Hsu, Ping-Chuan Wang, Zhijian Yang
  • Publication number: 20100182041
    Abstract: Programmable fuse-type through silicon vias (TSVs) in silicon chips are provided with non-programmable TSVs in the same chip. The programmable fuse-type TSVs may employ a region within the TSV structure having sidewall spacers that restrict the cross-sectional conductive path of the TSV adjacent a chip surface contact pad. Application of sufficient current by programming circuitry causes electromigration of metal to create a void in the contact pad and, thus, an open circuit. Programming may be carried out by complementary circuitry on two adjacent chips in a multi-story chip stack.
    Type: Application
    Filed: January 22, 2009
    Publication date: July 22, 2010
    Applicant: International Business Machines Corporation
    Inventors: Kai Di Feng, Louis Lu-Chen Hsu, Ping-Chuan Wang, Zhijian Yang
  • Publication number: 20100176506
    Abstract: The invention comprises a 3D chip stack with an intervening thermoelectric coupling (TEC) plate. Through silicon vias in the 3D chip stack transfer electronic signals among the chips in the 3D stack, power the TEC plate, as well as distribute heat in the stack from hotter chips to cooler chips.
    Type: Application
    Filed: January 12, 2009
    Publication date: July 15, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Louis Lu-Chen Hsu, Ping-Chuan Wang, Xiaojin Wei, Huilong Zhu
  • Patent number: 7737530
    Abstract: Semiconductor device structures for use with bipolar junction transistors and methods of fabricating such semiconductor device structures. The semiconductor device structure includes 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 includes 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 30, 2008
    Date of Patent: June 15, 2010
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Louis Lu-Chen Hsu, Jack Allan Mandelman
  • 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: 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