Patents by Inventor Louis L. Hsu

Louis L. 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).

  • Publication number: 20120188002
    Abstract: A modularized capacitor array includes a plurality of capacitor modules. Each capacitor module includes a capacitor and a switching device that is configured to electrically disconnect the capacitor. The switching device includes a sensing unit configured to detect the level of leakage of the capacitor so that the switching device disconnects the capacitor electrically if the leakage current exceeds a predetermined level. Each capacitor module can include a single capacitor plate, two capacitor plates, or more than two capacitor plates. The leakage sensors and switching devices are employed to electrically disconnect any capacitor module of the capacitor array that becomes leaky, thereby protecting the capacitor array from excessive electrical leakage.
    Type: Application
    Filed: April 3, 2012
    Publication date: July 26, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Louis L. Hsu, Xu Ouyang, Chih-Chao Yang
  • Patent number: 8219040
    Abstract: A method is provided for operating a transmitter integrated in a microelectronic element. In a calibration phase, a plurality of operational parameters are stored for controlling a frequency response of the transmitter under each of a plurality of corresponding operating conditions. Upon detecting an operating condition such as a temperature or power supply voltage level, the corresponding stored operational parameter is applied to the transmitter to control the frequency response.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: July 10, 2012
    Assignee: International Business Machines Corporation
    Inventors: Louis L. Hsu, Hayden C. Cranford, Jr., Joseph Natonio, James D. Rockrohr, Huihao Xu, Steven J. Zier
  • Patent number: 8219041
    Abstract: A design structure embodied in a machine-readable medium used in a design process provides a transmitter having a frequency response controllable in accordance with an operational parameter, and may include a storage operable to store operational parameters for controlling a frequency response of the transmitter under each of a plurality of corresponding operating conditions. A sensor can be used to detect an operating condition. In response to a change in the detected operating condition, a stored operational parameter corresponding to the detected operating condition can be used to control the frequency response of the transmitter.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: July 10, 2012
    Assignee: International Business Machines Corporation
    Inventors: Louis L. Hsu, Hayden C. Cranford, Jr., Joseph Natonio, James D. Rockrohr, Huihao Xu, Steven J. Zier
  • Publication number: 20120161334
    Abstract: An IC interconnect for high direct current (DC) that is substantially immune to electro-migration (EM) damage, and a method of manufacture of the IC interconnect are provided. A structure includes a cluster-of-via structure at an intersection between inter-level wires. The cluster-of-via structure includes a plurality of vias each of which are filled with a metal and lined with a liner material. At least two adjacent of the vias are in contact with one another and the plurality of vias lowers current loading between the inter-level wires.
    Type: Application
    Filed: February 21, 2012
    Publication date: June 28, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Louis L. HSU, Conal E. MURRAY, Ping-Chuan WANG, Chih-Chao YANG
  • Patent number: 8198174
    Abstract: A three-dimensional (3D) chip stack structure and method of fabricating the structure thereof are provided. The 3D chip stack structure includes a plurality of vertically stacked chips which are interconnected and bonded together, wherein each of the vertically stacked chips include one or more IC device strata. The 3D chip stack structure further includes an air channel interconnect network embedded within the chip stack structure, and wherein the air channel interconnect network is formed in between at least two wafers bonded to each other of the vertically stacked wafers and in between at least two bonded wafers of the vertically stacked wafers at a bonding interface thereof.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: June 12, 2012
    Assignee: International Business Machines Corporation
    Inventors: Louis L. Hsu, Brian L. Ji, Fei Liu, Conal E. Murray
  • Patent number: 8188786
    Abstract: A modularized capacitor array includes a plurality of capacitor modules. Each capacitor module includes a capacitor and a switching device that is configured to electrically disconnect the capacitor. The switching device includes a sensing unit configured to detect the level of leakage of the capacitor so that the switching device disconnects the capacitor electrically if the leakage current exceeds a predetermined level. Each capacitor module can include a single capacitor plate, two capacitor plates, or more than two capacitor plates. The leakage sensors and switching devices are employed to electrically disconnect any capacitor module of the capacitor array that becomes leaky, thereby protecting the capacitor array from excessive electrical leakage.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: May 29, 2012
    Assignee: International Business Machines Corporation
    Inventors: Louis L. Hsu, Xu Ouyang, Chih-Chao Yang
  • Publication number: 20120091593
    Abstract: A through silicon via (TSV) and a deep trench capacitor (DTCap) or a deep trench isolation (DTI) are simultaneously formed on the same substrate by a single mask and a single reactive ion etching (RIE). The TSV trench is wider and deeper that the DTCap or DTI trench. The TSV and DTCap or DTI are formed with different dielectric materials on the trench sidewalls. The TSV and DTCap or DTI are perfectly aligned.
    Type: Application
    Filed: October 14, 2010
    Publication date: April 19, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kangguo Cheng, Mukta G. Farooq, Louis L. Hsu
  • Patent number: 8138603
    Abstract: An IC interconnect for high direct current (DC) that is substantially immune to electro-migration (EM) damage, a design structure of the IC interconnect and a method of manufacture of the IC interconnect is provided. The structure has electro-migration immunity and redundancy of design, which includes a plurality of wires laid out in parallel and each of which are coated with a liner material. Two adjacent of the wires are physically contacted to each other.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: March 20, 2012
    Assignee: International Business Machines Corporation
    Inventors: Louis L. Hsu, Conal E. Murray, Ping-Chuan Wang, Chih-Chao Yang
  • Patent number: 8129609
    Abstract: Semiconductor integrated thermoelectric devices are provided, which are formed having high-density arrays of thermoelectric (TE) elements using semiconductor thin-film and VLSI (very large scale integration) fabrication processes. Thermoelectric devices can be either separately formed and bonded to semiconductor chips, or integrally formed within the non-active surface of semiconductor chips, for example.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: March 6, 2012
    Assignee: International Business Machines Corporation
    Inventors: Howard Hao Chen, Richard C. Chu, Louis L. Hsu
  • Patent number: 8089285
    Abstract: A method and tamper resistant circuit for resisting tampering including reverse engineering in a semiconductor chip, and a design structure on which the subject circuit resides are provided. A sensing device for detecting a chip tampering state is formed with the semiconductor chip including the circuitry to be protected. A tamper resistant control signal generator is coupled to the sensing unit for generating a tamper resistant control signal responsive to a detected chip tampering state. A functional operation inhibit circuit is coupled to the tamper resistant control signal generator for inhibiting functional operation of the circuitry to be protected responsive to the tamper resistant control signal.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: January 3, 2012
    Assignee: International Business Machines Corporation
    Inventors: Louis L. Hsu, David W. Kruger, James S. Mason, Richard W. Oldrey
  • Publication number: 20110256720
    Abstract: Anti-reverse engineering techniques are provided. In one aspect, a method for forming at least one feature in an insulating layer is provided. The method comprises the following steps. Ions are selectively implanted in the insulating layer so as to form at least one implant region within the insulating layer, the implanted ions being configured to alter an etch rate through the insulating layer within the implant region. The insulating layer is etched to, at the same time, form at least one void both within the implant region and outside of the implant region, wherein the etch rate through the insulating layer within the implant region is different from an etch rate through the insulating layer outside of the implant region. The void is filled with at least one conductor material to form the feature in the insulating layer.
    Type: Application
    Filed: June 27, 2011
    Publication date: October 20, 2011
    Applicant: International Business Machines Corporation
    Inventors: Louis L. Hsu, Rajiv V. Joshi, David W. Kruger
  • Publication number: 20110254121
    Abstract: Voltage programmable anti-fuse structures and methods are provided that include at least one conductive material island atop a dielectric surface that is located between two adjacent conductive features. In one embodiment, the anti-fuse structure includes a dielectric material having at least two adjacent conductive features embedded therein. At least one conductive material island is located on an upper surface of the dielectric material that is located between the at least two adjacent conductive features. A dielectric capping layer is located on exposed surfaces of the dielectric material, the at least one conductive material island and the at least two adjacent conductive features. When the anti-fuse structure is in a programmed state, a dielectric breakdown path is present in the dielectric material that is located beneath the at least one conductive material island which conducts electrical current to electrically couple the two adjacent conductive features.
    Type: Application
    Filed: April 16, 2010
    Publication date: October 20, 2011
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kangguo Cheng, Louis L. Hsu, William R. Tonti, Chih-Chao Yang
  • Patent number: 8040813
    Abstract: An apparatus is provided which includes a common signal node operable to conduct a first signal, a first circuit coupled to the common signal node to utilize the first signal and a signal-handling element coupled to the common signal node. The signal-handling element includes an isolating circuit coupled to the first conductor, a second conductor operable to conduct an output of the isolating circuit, and a signal-handling circuit coupled to the second conductor. The signal-handling circuit is operable to perform a signal-handling function in response to the output of the isolating circuit. By virtue of the isolating circuit, the signal-handling circuit and the first circuit are isolated from the second conductor and the signal-handling circuit. Preferably, the achieved isolation permits a communication signal included in the first signal to be conducted within a communication apparatus with less capacitance, and producing less return loss of that signal.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: October 18, 2011
    Assignee: International Business Machines Corporation
    Inventors: Louis L. Hsu, Karl D. Selander, Michael A. Sorna, Daniel W. Storaska
  • Patent number: 8024679
    Abstract: A design structure for a signal-handing apparatus or communication apparatus is provided which includes a common signal node operable to conduct a first signal, a first circuit coupled to the common signal node to utilize the first signal and a signal-handling element coupled to the common signal node. A signal-handling apparatus may include an isolating circuit coupled to a first conductor, a second conductor to conduct an output of the isolating circuit, and a signal-handling circuit coupled to the second conductor. A signal-handling circuit can perform a signal-handling function in response to the output of the isolating circuit. The signal-handling circuit and the first circuit may be isolated from the second conductor and the signal-handling circuit such that a communication signal may be conducted with less capacitance and be subject to less return loss.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: September 20, 2011
    Assignee: International Business Machines Corporation
    Inventors: Louis L. Hsu, Karl D. Selander, Michael A. Sorna, Daniel W. Storaska
  • Patent number: 8004097
    Abstract: Methods for manufacturing an integrated wafer scale package that reduces a potential misalignment between a chip and a pocket of a carrier substrate. According to one aspect of the present invention, a method for manufacturing a semiconductor device includes a photoresist layer disposed on a carrier substrate, a chip placed onto a surface of the photoresist layer. The photoresist layer is patterned using the chip as a mask. The chip is removed from the photoresist layer after the patterning step. A pocket is formed in the carrier substrate, and the chip that was removed is placed into the pocket formed in the carrier substrate.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: August 23, 2011
    Assignee: International Business Machines Corporation
    Inventors: Howard Hao Chen, Louis L. Hsu
  • Patent number: 7994042
    Abstract: Anti-reverse engineering techniques are provided. In one aspect, a method for forming at least one feature in an insulating layer is provided. The method comprises the following steps. Ions are selectively implanted in the insulating layer so as to form at least one implant region within the insulating layer, the implanted ions being configured to alter an etch rate through the insulating layer within the implant region. The insulating layer is etched to, at the same time, form at least one void both within the implant region and outside of the implant region, wherein the etch rate through the insulating layer within the implant region is different from an etch rate through the insulating layer outside of the implant region. The void is filled with at least one conductor material to form the feature in the insulating layer.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: August 9, 2011
    Assignee: International Business Machines Corporation
    Inventors: Louis L. Hsu, Rajiv V. Joshi, David W. Kruger
  • Publication number: 20110169127
    Abstract: A design structure is provided for interconnect structures containing various capping materials for electrical fuses and other related applications. The structure includes a first interconnect structure having a first interfacial structure and a second interconnect structure adjacent to the first structure. The second interconnect structure has second interfacial structure different from the first interfacial structure.
    Type: Application
    Filed: March 21, 2011
    Publication date: July 14, 2011
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Louis L. HSU, William R. Tonti, Chih-Chao Yang
  • Patent number: 7956466
    Abstract: A design structure is provided for interconnect structures containing various capping materials for electrical fuses and other related applications. The structure includes a first interconnect structure having a first interfacial structure and a second interconnect structure adjacent to the first structure. The second interconnect structure has second interfacial structure different from the first interfacial structure.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: June 7, 2011
    Assignee: International Business Machines Corporation
    Inventors: Louis L. Hsu, William R. Tonti, Chih-Chao Yang
  • Patent number: 7923712
    Abstract: A PCM cell structure comprises a first electrode, a phase change element, and a second electrode, wherein the phase change element is inserted in between the first electrode and the second electrode and only the peripheral edge of the first electrode contacts the phase change element thereby reducing the contact area between the phase change element and the first electrode and thereby increasing the current density through the phase change element and effectively inducing the phase change at lower levels of current and reduced programming power.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: April 12, 2011
    Assignee: International Business Machines Corporation
    Inventors: John Christopher Arnold, Lawrence Alfred Clevenger, Timothy Joseph Dalton, Michael Christopher Gaidis, Louis L. Hsu, Carl John Radens, Keith Kwong Hon Wong, Chih-Chao Yang
  • Publication number: 20110069425
    Abstract: A modularized capacitor array includes a plurality of capacitor modules. Each capacitor module includes a capacitor and a switching device that is configured to electrically disconnect the capacitor. The switching device includes a sensing unit configured to detect the level of leakage of the capacitor so that the switching device disconnects the capacitor electrically if the leakage current exceeds a predetermined level. Each capacitor module can include a single capacitor plate, two capacitor plates, or more than two capacitor plates. The leakage sensors and switching devices are employed to electrically disconnect any capacitor module of the capacitor array that becomes leaky, thereby protecting the capacitor array from excessive electrical leakage.
    Type: Application
    Filed: September 24, 2009
    Publication date: March 24, 2011
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Louis L. Hsu, Xu Ouyang, Chih-Chao Yang