Patents by Inventor Benjamin Lau

Benjamin Lau 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: 9843326
    Abstract: Device and a method of configuring a voltage level shifter is disclosed. The device includes a traditional level shifter circuit (TLSC), a first control circuit (FCC) cross-coupled to a second control circuit (SCC). The FCC is coupled to receive an inverse of an input at a first input node and provide a first output at a first output node. The SCC is coupled to receive the input at a second input node and provide a second output at a second output node and the TLSC is configured to provide an output at an output node in response to the first output received at the first output node and the second output received at the second output node. A first power source is configured to provide a first power supply voltage to the TLSC, the FCC and the SCC. The output is latched to track the input. The TLSC, the FCC and the SCC are coupled to a ground reference node.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: December 12, 2017
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Fei Xu, On Auyeung, Qi Chen, Zhihong Luo, Sui Chor Benjamin Lau, Bai Yen Nguyen
  • Patent number: 9837170
    Abstract: A system and method for testing performance of a plurality of memory modules includes generating a clock signal at a set frequency and sending the clock signal to the memory modules. An initial data pattern is sent to an input of a first memory module. A subsequent data pattern received from the first memory module is delayed by a predetermined delay time and sent to an input of a last memory module. The initial data pattern and the subsequent data pattern received from the output of the last memory module are compared and a performance of the memory modules is also calculated.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: December 5, 2017
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Bai Yen Nguyen, Benjamin Lau, Chou-Te Kang, Yao Hsien Huang
  • Patent number: 9411919
    Abstract: A methodology for the simulation of semiconductor memory devices that exhibits improved accuracy and speed, and the apparatus performing the methodology are disclosed. Embodiments may include determining a state of a bitcell of an integrated circuit (IC) design, determining a first threshold voltage for the bitcell based on the state of the bitcell, and simulating electrical characteristics of the bitcell according to the first threshold voltage to verify the IC design.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: August 9, 2016
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Zhiqi Huang, Yoke Weng Tam, Benjamin Lau, Bai Yen Nguyen
  • Publication number: 20160125114
    Abstract: A methodology for the simulation of semiconductor memory devices that exhibits improved accuracy and speed, and the apparatus performing the methodology are disclosed. Embodiments may include determining a state of a bitcell of an integrated circuit (IC) design, determining a first threshold voltage for the bitcell based on the state of the bitcell, and simulating electrical characteristics of the bitcell according to the first threshold voltage to verify the IC design.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 5, 2016
    Inventors: Zhiqi HUANG, Yoke Weng TAM, Benjamin LAU, Bai Yen NGUYEN
  • Publication number: 20150371719
    Abstract: A system and method for testing performance of a plurality of memory modules includes generating a clock signal at a set frequency and sending the clock signal to the memory modules. An initial data pattern is sent to an input of a first memory module. A subsequent data pattern received from the first memory module is delayed by a predetermined delay time and sent to an input of a last memory module. The initial data pattern and the subsequent data pattern received from the output of the last memory module are compared and a performance of the memory modules is also calculated.
    Type: Application
    Filed: June 24, 2014
    Publication date: December 24, 2015
    Inventors: Bai Yen Nguyen, Benjamin Lau, Chou-Te Kang, Yao Hsien Huang
  • Patent number: 8803590
    Abstract: A fuse circuit having a fuse unit cell containing two fuses. In the program/write mode, only one of the fuses in the fuse unit cell will be blown. In read mode, since only one fuse is blown, the current that goes through the two fuses in the fuse unit cell will be very small. Hence, the read power consumption for the fuse circuit is also very small and its sensing speed is also very high.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: August 12, 2014
    Assignee: Globalfoundries Singapore Pte. Ltd.
    Inventors: Zhihong Luo, On Au Yeung, Bai Yen Nguyen, Benjamin Lau
  • Patent number: 8742830
    Abstract: A fuse sensing circuit is disclosed. Embodiments include: providing a sense input terminal; providing a sense output terminal; and providing first and second capacitors that are configured to charge and discharge based on the sense input terminal, wherein the first and second capacitors are further configured to discharge current to a fuse unit cell, and the sense output terminal is configured to indicate a fuse state of the fuse unit cell based on the discharging of the first and second capacitors. Embodiments include the indicated fuse state being based on a discharge rate difference between the discharging of the first capacitor and the discharging of the second capacitor.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: June 3, 2014
    Assignee: Globalfoundries Singapore Pte. Ltd.
    Inventors: Zhihong Luo, On Au Yeung, Benjamin Lau
  • Publication number: 20140028381
    Abstract: A fuse circuit having a fuse unit cell containing two fuses. In the program/write mode, only one of the fuses in the fuse unit cell will be blown. In read mode, since only one fuse is blown, the current that goes through the two fuses in the fuse unit cell will be very small. Hence, the read power consumption for the fuse circuit is also very small and its sensing speed is also very high.
    Type: Application
    Filed: July 26, 2012
    Publication date: January 30, 2014
    Applicant: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Zhihong LUO, On AU YEUNG, Bai Yen NGUYEN, Benjamin LAU
  • Publication number: 20140022004
    Abstract: A fuse sensing circuit is disclosed. Embodiments include: providing a sense input terminal; providing a sense output terminal; and providing first and second capacitors that are configured to charge and discharge based on the sense input terminal, wherein the first and second capacitors are further configured to discharge current to a fuse unit cell, and the sense output terminal is configured to indicate a fuse state of the fuse unit cell based on the discharging of the first and second capacitors. Embodiments include the indicated fuse state being based on a discharge rate difference between the discharging of the first capacitor and the discharging of the second capacitor.
    Type: Application
    Filed: July 19, 2012
    Publication date: January 23, 2014
    Applicant: GLOBALFOUNDRIES Singapore Pte. Ltd.
    Inventors: Zhihong Luo, On Au Yeung, Benjamin Lau
  • Patent number: 5982683
    Abstract: An enhanced method of testing semiconductor devices having nonvolatile elements by determining regions of the semiconductor having differing orders of probability that a defect will occur. The enhanced method of testing includes testing of regions from the highest probability to the lowest probability of having a defect. Nonvolatile memory elements in the region being tested are placed in a high impedance state, bypass circuits in the region being tested are activated to bypass the nonvolatile memory elements that control the state of elements in the region being tested and test vectors are applied to the elements that are controlled by the bypassed nonvolatile memory elements. This procedure is repeated for the next untested region having the highest probability of having a defect until all regions have been tested.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: November 9, 1999
    Assignee: Advanced Micro Devices, Inc.
    Inventors: James A. Watson, Fabiano Fontana, Jenny Chui, Steve Choi, Benjamin Lau