Patents by Inventor Howard H. Chen

Howard H. Chen 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: 20110019321
    Abstract: A high-density deep trench capacitor array with a plurality of leakage sensors and switch devices. Each capacitor array further comprises a plurality of sub-arrays, wherein the leakage in each sub-array is independently controlled by a sensor and switch unit. The leakage sensor comprises a current mirror, a transimpedance amplifier, a voltage comparator, and a timer. If excessive leakage current is detected, the switch unit will automatically disconnect the leaky capacitor module to reduce stand-by power and improve yield. An optional solid-state resistor can be formed on top of the deep trench capacitor array to increase the temperature and speed up the leakage screening process.
    Type: Application
    Filed: July 24, 2009
    Publication date: January 27, 2011
    Applicant: International Business Machines Corporation
    Inventors: Howard H. Chen, Kai D. Feng, Louis L. Hsu, Seongwon Kim
  • Publication number: 20110002188
    Abstract: Electronic fuse (e-fuse) systems with multiple reprogrammability are provided. In one aspect, a reprogrammable e-fuse system is provided that includes a first e-fuse string; a second e-fuse string; a selector connected to both the first e-fuse string and the second e-fuse string configured to alternately select an e-fuse from the first e-fuse string or the second e-fuse string to be programmed; and a comparator connected to both the first e-fuse string and the second e-fuse string configured to compare a voltage across the first e-fuse string to a voltage across the second e-fuse string to determine a programming state of the e-fuse system.
    Type: Application
    Filed: July 6, 2009
    Publication date: January 6, 2011
    Applicant: International Business Machines Corporation
    Inventors: Howard H. Chen, John A. Fifield, Louis C. Hsu
  • Publication number: 20100293512
    Abstract: Disclosed is a computer-implemented method for designing a chip to optimize yielding parts in different bins as a function of multiple diverse metrics and further to maximize the profit potential of the resulting chip bins. The method separately calculates joint probability distributions (JPD), each JPD being a function of a different metric (e.g., performance, power consumption, etc.). Based on the JPDs, corresponding yield curves are generated. A profit function then reduces the values of all of these metrics (e.g., performance values, power consumption values, etc.) to a common profit denominator (e.g., to monetary values indicating profit that may be associated with a given metric value). The profit function and, more particularly, the monetary values can be used to combine the various yield curves into a combined profit-based yield curve from which a profit model can be generated.
    Type: Application
    Filed: May 18, 2009
    Publication date: November 18, 2010
    Applicant: International Business Machines Corporation
    Inventors: Nathan Buck, Howard H. Chen, James P. Eckhardt, Eric A. Foreman, James C. Gregerson, Peter A. Habitz, Susan K. Lichtensteiger, Chandramouli Visweswariah, Tad J. Wilder
  • Patent number: 7675789
    Abstract: Aspects of the invention relate to a programmable heavy-ion sensing device for accelerated DRAM soft error detection. Design of a DRAM-based alpha particle sensing apparatus is preferred to be used as an accelerated on-chip SER test vehicle. The sensing apparatus is provided with programmable sensing margin, refresh rate, and supply voltage to achieve various degree of SER sensitivity. In addition, a dual-mode DRAM array is proposed so that at least a portion of the array can be used to monitor high-energy particle activities during soft-error detection (SED) mode.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: March 9, 2010
    Assignee: International Business Machines Corporation
    Inventors: Howard H. Chen, John A. Fifield, Louis L. Hsu, Henry H. K. Tang
  • Publication number: 20090309136
    Abstract: A semiconductor device and a method of fabricating a semiconductor device, wherein the method comprises forming, on a substrate, a plurality of planarized fin bodies to be used for customized fin field effect transistor (FinFET) device formation; forming a nitride spacer around each of the plurality of fin bodies; forming an isolation region in between each of the fin bodies; and coating the plurality of fin bodies, the nitride spacers, and the isolation regions with a protective film. The fabricated semiconductor device is adapted to be used in customized applications as a customized semiconductor device.
    Type: Application
    Filed: August 4, 2009
    Publication date: December 17, 2009
    Applicant: International Business Machines Corporation
    Inventors: Howard H. Chen, Louis C. Hsu, Jack A. Mandelman, Chun-Yung Sung
  • Publication number: 20090184264
    Abstract: A laser annealing method for annealing a stacked semiconductor structure having at least two stacked layers is disclosed. A laser beam is focused on a lower layer of the stacked layers. The laser beam is then scanned to anneal features in the lower layer. The laser beam is then focused on an upper layer of the stacked layers, and the laser beam is scanned to anneal features in the upper layer. The laser has a wavelength of less than one micrometer. The beam size, depth of focus, energy dosage, and scan speed of the laser beam are programmable. Features in the lower layer are offset from features in the upper layer such that these features do not overlap along a plane parallel to a path of the laser beam. Each of the stacked layers includes active devices, such as transistors. Also, the first and second layers may be annealed simultaneously.
    Type: Application
    Filed: January 23, 2008
    Publication date: July 23, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Howard H. Chen, Louis C. Hsu, Lawrence S. Mok, J. Campbell Scott
  • Patent number: 7499308
    Abstract: Aspects of the invention relate to a programmable heavy-ion sensing device for accelerated DRAM soft error detection. Design of a DRAM-based alpha particle sensing apparatus is preferred to be used as an accelerated on-chip SER test vehicle. The sensing apparatus is provided with programmable sensing margin, refresh rate, and supply voltage to achieve various degree of SER sensitivity. In addition, a dual-mode DRAM array is proposed so that at least a portion of the array can be used to monitor high-energy particle activities during soft-error detection (SED) mode.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: March 3, 2009
    Assignee: International Business Machines Corporation
    Inventors: Howard H. Chen, John A. Fifield, Louis L. Hsu, Henry H. K. Tang
  • Publication number: 20080273393
    Abstract: Aspects of the invention relate to a programmable heavy-ion sensing device for accelerated DRAM soft error detection. Design of a DRAM-based alpha particle sensing apparatus is preferred to be used as an accelerated on-chip SER test vehicle. The sensing apparatus is provided with programmable sensing margin, refresh rate, and supply voltage to achieve various degree of SER sensitivity. In addition, a dual-mode DRAM array is proposed so that at least a portion of the array can be used to monitor high-energy particle activities during soft-error detection (SED) mode.
    Type: Application
    Filed: March 21, 2007
    Publication date: November 6, 2008
    Inventors: Howard H. Chen, John A. Fifield, Louis L. Hsu, Henry H. K. Tang
  • Publication number: 20080266984
    Abstract: Aspects of the invention relate to a programmable heavy-ion sensing device for accelerated DRAM soft error detection. Design of a DRAM-based alpha particle sensing apparatus is preferred to be used as an accelerated on-chip SER test vehicle. The sensing apparatus is provided with programmable sensing margin, refresh rate, and supply voltage to achieve various degree of SER sensitivity. In addition, a dual-mode DRAM array is proposed so that at least a portion of the array can be used to monitor high-energy particle activities during soft-error detection (SED) mode.
    Type: Application
    Filed: June 6, 2008
    Publication date: October 30, 2008
    Applicant: International Business Machines Corporation
    Inventors: Howard H. Chen, John A. Fifield, Louis L. Hsu, Henry H.K. Tang
  • Patent number: 6910165
    Abstract: A system and method for generating random noise for use in testing electronic devices comprises a first random pattern generator circuit for generating first sets of random bit pattern signals; one or more delay devices each receiving a trigger input signal and a random bit pattern signal set for generating in response a respective delay output signal, each delay output signal being delayed in time with respect to a respective trigger signal, a delay time being determined by the bit pattern set received; and, an oscillator circuit device associated with a respective one or more delay devices for receiving a respective delay output signal therefrom and generating a respective oscillating signal, each oscillator signal generated being used to generate artificial random noise for emulating a real noise environment in an electronic device.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: June 21, 2005
    Assignee: International Business Machines Corporation
    Inventors: Howard H. Chen, Li-Kong Wang, Louis L. Hsu, Sang H. Dhong, Tin-chee Lo
  • Patent number: 6825534
    Abstract: A semiconductor device includes a combination substrate having a bulk silicon region, and a silicon-on-insulator (SOI) region. The SOI region includes a crystallized silicon layer formed by annealing amorphous silicon and having isolation trenches formed therein so as to remove defective regions, and isolation oxides formed in the isolation trenches.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: November 30, 2004
    Assignee: International Business Machines Corporation
    Inventors: Howard H. Chen, Louis L. Hsu, Li-Kong Wang
  • Patent number: 6823293
    Abstract: A hierarchical power supply noise monitoring device and system for very large scale integrated circuits. The noise-monitoring device is fabricated on-chip to measure the noise on the chip. The noise-monitoring system includes a plurality of on-chip noise-monitoring devices distributed strategically across the chip. A noise-analysis algorithm analyzes the noise characteristics from the noise data collected from the noise-monitoring devices, and a hierarchical noise-monitoring system maps the noise of each core to the system on chip.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: November 23, 2004
    Assignee: International Business Machines Corporation
    Inventors: Howard H. Chen, Louis Lu-Chen Hsu, Brian L. Ji, Li-Kong Wang
  • Publication number: 20040128115
    Abstract: A hierarchical power supply noise monitoring device and system for very large scale integrated circuits. The noise-monitoring device is fabricated on-chip to measure the noise on the chip. The noise-monitoring system comprises a plurality of on-chip noise-monitoring devices distributed strategically across the chip. A noise-analysis algorithm analyzes the noise characteristics from the noise data collected from the noise-monitoring devices, and a hierarchical noise-monitoring system maps the noise of each core to the system on chip.
    Type: Application
    Filed: December 31, 2002
    Publication date: July 1, 2004
    Applicant: International Business Machines Corporation
    Inventors: Howard H. Chen, Louis Lu-Chen Hsu, Brian L. Ji, Li-Kong Wang
  • Patent number: 6728916
    Abstract: Hierarchical built-in self-test methods and arrangement for verifying system functionality. As a result, an effective built-in self-test methodology is provided for conducting complete system-on-chip testing, to ensure both the circuit reliability and performance of system-on-chip design. As an added advantage, development costs are reduced for system-on-chip applications.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: April 27, 2004
    Assignee: International Business Machines Corporation
    Inventors: Howard H. Chen, Louis L. Hsu, Li-Kong Wang
  • Publication number: 20020178416
    Abstract: Hierarchical built-in self-test methods and arrangement for verifying system functionality. As a result, an effective built-in self-test methodology is provided for conducting complete system-on-chip testing, to ensure both the circuit reliability and performance of system-on-chip design. As an added advantage, development costs are reduced for system-on-chip applications.
    Type: Application
    Filed: May 23, 2001
    Publication date: November 28, 2002
    Applicant: IBM Corporation
    Inventors: Howard H. Chen, Louis L. Hsu, Li-Kong Wang
  • Publication number: 20020120898
    Abstract: A system and method for generating random noise for use in testing electronic devices comprises a first random pattern generator circuit for generating first sets of random bit pattern signals; one or more delay devices each receiving a trigger input signal and a random bit pattern signal set for generating in response a respective delay output signal, each delay output signal being delayed in time with respect to a respective trigger signal, a delay time being determined by the bit pattern set received; and, an oscillator circuit device associated with a respective one or more delay devices for receiving a respective delay output signal therefrom and generating a respective oscillating signal, each oscillator signal generated being used to generate artificial random noise for emulating a real noise environment in an electronic device.
    Type: Application
    Filed: February 28, 2001
    Publication date: August 29, 2002
    Applicant: International Business Machines Corporaton
    Inventors: Howard H. Chen, Li-Kong Wang, Louis L. Hsu, Sang H. Dhong, Tin-chee Lo
  • Publication number: 20010016383
    Abstract: A method of forming a semiconductor substrate (and the resulting structure), includes etching a groove into a bulk silicon substrate, forming a dielectric in the groove and planarizing the silicon substrate to form at least one patterned dielectric island in the silicon substrate, forming an amorphous silicon (or SiGe) layer on exposed portions of the silicon substrate and the at least one dielectric island, crystallizing the amorphous silicon (or SiGe) layer using the exposed silicon substrate as a seed, the silicon substrate having direct contact with the formed silicon layer serving as a crystal growth seeding for the crystallization process, and converting the silicon (or SiGe) layer to crystallized silicon, and performing a shallow trench isolation (STI) process, to form oxide isolations between devices.
    Type: Application
    Filed: December 27, 2000
    Publication date: August 23, 2001
    Inventors: Howard H. Chen, Louis L. Hsu, Li-Kong Wang
  • Patent number: 6214653
    Abstract: A method of forming a semiconductor substrate (and the resulting structure), includes etching a groove into a bulk silicon substrate, forming a dielectric in the groove and planarizing the silicon substrate to form at least one patterned dielectric island in the silicon substrate, forming an amorphous silicon (or SiGe) layer on exposed portions of the silicon substrate and the at least one dielectric island, crystallizing the amorphous silicon (or SiGe) layer using the exposed silicon substrate as a seed, the silicon substrate having direct contact with the formed silicon layer serving as a crystal growth seeding for the crystallization process, and converting the silicon (or SiGe) layer to crystallized silicon, and performing a shallow trench isolation (STI) process, to form oxide isolations between devices.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: April 10, 2001
    Assignee: International Business Machines Corporation
    Inventors: Howard H. Chen, Louis L. Hsu, Li-Kong Wang