Patents by Inventor Wen-Shen Chou

Wen-Shen Chou 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: 10141934
    Abstract: A level shifter circuit includes a latch module with a first plurality of PMOS transistors and a second plurality of NMOS transistors; a MOS module with a third plurality of MOS transistors operatively connected to the latch module; a fourth plurality of transistors operatively connected between the MOS module and the ground; and a fifth plurality of capacitors operatively connected between the latch module and the gates of fourth plurality of transistors.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: November 27, 2018
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Yu-Tao Yang, Wen-Shen Chou, Yung-Chow Peng
  • Publication number: 20180323182
    Abstract: A semiconductor device includes an edge active cell, an inner active cell and a middle active cell. The edge active cell is located near an edge of the semiconductor device. The edge active cell includes a plurality of fingers. The inner active cell is adjacent to the edge active cell toward a central portion of the semiconductor device. The inner active cell includes a plurality of fingers and at least one of the plurality of fingers of the edge active cell is electrically connected to at least one of the plurality of fingers of the inner active cell. The middle active cell is located near the central portion of the semiconductor device. The middle active cell includes a plurality of fingers and each of the fingers of the middle active cell is electrically connected to each other.
    Type: Application
    Filed: June 28, 2018
    Publication date: November 8, 2018
    Inventors: Yung-Chow PENG, Wen-Shen CHOU, Jaw-Juinn HORNG
  • Publication number: 20180321291
    Abstract: A method of measuring an output resistance of a DUT includes determining an initial output resistance of an n-type transistor, thereby determining an initial gate voltage for the n-type transistor, and determining an initial output resistance of a p-type transistor, thereby determining an initial gate voltage for the n-type transistor. A resistance for a cascode arrangement of the n-type transistor and the p-type transistor is determined, and the output resistance of the DUT using the cascode arrangement is measured by biasing the n-type transistor with the initial gate voltage for the n-type transistor and biasing the p-type transistor with the initial gate voltage for the p-type transistor.
    Type: Application
    Filed: June 29, 2018
    Publication date: November 8, 2018
    Inventors: Wen-Shen CHOU, Po-Zeng KANG, Yung-Chow PENG
  • Patent number: 10026725
    Abstract: A semiconductor device includes an edge active cell, an inner active cell and a middle active cell. The edge active cell is located near an edge of the semiconductor device. The edge active cell includes a plurality of fingers. The inner active cell is adjacent to the edge active cell toward a central portion of the semiconductor device. The inner active cell includes a plurality of fingers and at least one of the plurality of fingers of the edge active cell is electrically connected to at least one of the plurality of fingers of the inner active cell. The middle active cell is located near the central portion of the semiconductor device. The middle active cell includes a plurality of fingers and each of the fingers of the middle active cell is electrically connected to each other.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: July 17, 2018
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Yung-Chow Peng, Wen-Shen Chou, Jaw-Juinn Horng
  • Patent number: 10018660
    Abstract: A testing structure includes a first transistor having a first dopant type connected to a current source. The testing structure further includes a second transistor having a second dopant type, opposite to the first dopant type. The second transistor is connected to a device under test (DUT). The second transistor is connected in series with the first transistor in a cascode arrangement. The cascode arrangement is capable of measuring an output resistance of the DUT of greater than 1 mega-ohm (M?).
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: July 10, 2018
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Wen-Shen Chou, Po-Zeng Kang, Yung-Chow Peng
  • Publication number: 20180164349
    Abstract: A peak current evaluation apparatus for an IC is provided. The peak current evaluation apparatus includes a pulse tuner and a testing circuit. The pulse tuner receives a clock signal, adjusts pulse width and duty ratio of the clock signal according to at least one predetermined parameter in order to generate a pulse signal with a stress voltage. The testing circuit is coupled to the pulse tuner. The testing circuit, which includes two input ports, receives the pulse signal at one of the two input ports in order to stress a testing device, measures the resistance value of the testing device, and calculates the peak current of the testing device when the resistance value increases and exceeds a threshold value.
    Type: Application
    Filed: June 20, 2017
    Publication date: June 14, 2018
    Inventors: Yu-Tao YANG, Wen-Shen CHOU, Yung-Chow PENG
  • Publication number: 20180156855
    Abstract: A circuit for measuring a bandwidth of an amplifier includes first and second capacitors, first through third switches, and a pulse generator. First terminals of the capacitors are coupled to an amplifier input, and a second terminal of the second capacitor is coupled to an amplifier output. The first switch has a control terminal and terminals coupled to a first input node and a second terminal of the first capacitor. The second switch has a control terminal and terminals coupled to the amplifier input and output. The third switch has a control terminal, a first terminal, and a second terminal coupled to the second terminal of the first capacitor. The pulse generator has a first output coupled to the control terminal of the third switch, and is configured to vary a pulse width of a pulse signal supplied from the first output to the control terminal of the third switch.
    Type: Application
    Filed: January 18, 2018
    Publication date: June 7, 2018
    Inventors: Yung-Chow PENG, Chih-Chiang CHANG, Wen-Shen CHOU, Brady YANG
  • Publication number: 20180152187
    Abstract: A level shifter circuit includes a latch module with a first plurality of PMOS transistors and a second plurality of NMOS transistors; a MOS module with a third plurality of MOS transistors operatively connected to the latch module; a fourth plurality of transistors operatively connected between the MOS module and the ground; and a fifth plurality of capacitors operatively connected between the latch module and the gates of fourth plurality of transistors.
    Type: Application
    Filed: October 26, 2017
    Publication date: May 31, 2018
    Inventors: Yu-Tao YANG, Wen-Shen CHOU, Yung-Chow PENG
  • Patent number: 9921254
    Abstract: A circuit for measuring a bandwidth of an amplifier includes a switch-capacitor circuit and a controller. The switch-capacitor circuit is coupled to an output and an input of the amplifier. The switch-capacitor circuit is switchable between a sampling mode and an amplification mode. The controller is coupled to the switch-capacitor circuit and the output of the amplifier. The controller is configured to switch the switch-capacitor circuit between the sampling mode and the amplification mode, control the amplification mode to have various durations, and determine the bandwidth of the amplifier based on the various durations of the amplification mode and corresponding voltages at the output of the amplifier.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: March 20, 2018
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Yung-Chow Peng, Chih-Chiang Chang, Wen-Shen Chou, Brady Yang
  • Publication number: 20180031627
    Abstract: A device comprising a device under test and a time to current converter configured to be coupled to the device under test. The device under test comprises: (i) at least one delay element for creating a delay; (ii) at least one capacitor for providing capacitance loading to the at least one delay element; and (iii) at least one switch to control the capacitance loading provided by the at least one capacitor. The time to current converter comprises (i) a first input for receiving a first clock signal; (ii) a second input for receiving an inverted and delayed version of the first clock signal from the device under test; and (iii) an impedance module for measuring an output current. During a testing mode, the at least one switch is in a closed position so the at least one capacitor can provide a capacitance loading to the at least one delay element to amplify the delay associated with the device under test.
    Type: Application
    Filed: July 29, 2016
    Publication date: February 1, 2018
    Inventors: Yung-Chow Peng, Po-Zeng Kang, Wen-Shen Chou, Yu-Tao Yang
  • Publication number: 20170350938
    Abstract: An IC degradation sensor is disclosed. The IC degradation management sensor includes an odd number of first logic gates electrically connected in a ring oscillator configuration, each first logic gate having an input and an output. Each first logic gate further includes a first PMOS transistor, a first NMOS transistor and a second logic gate having an input and an output. The input of the second logic gate is the input of the first logic gate, and the drains of the first PMOS transistor and the first NMOS transistor are electrically connected to the output of the second logic gate, and the output of the second logic gate is the output of the first logic gate.
    Type: Application
    Filed: June 1, 2016
    Publication date: December 7, 2017
    Inventors: Po-Zeng KANG, Chih-Hsien CHANG, Wen-Shen CHOU, Yung-Chow PENG
  • Patent number: 9424384
    Abstract: A method of density-controlled floorplan design for integrated circuits having a plurality of blocks includes positioning decoupling capacitor (DCAP) cells at least partially around a pattern density sensitive block. The method also includes changing at least a portion of a pattern density insensitive block adjacent to the pattern density sensitive block according to at least one pattern density rule.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: August 23, 2016
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chung-Chieh Yang, Yung-Chow Peng, Chung-Peng Hsieh, Wen-Shen Chou, Chih-Chiang Chang
  • Patent number: 9367654
    Abstract: A method for back-end-of-line variation modeling is provided. A bounding box is defined within a design layout. A back-end-of-line variation parameter is determined for the bounding box. The back-end-of-line variation parameter is applied as a constraint for simulation of the design layout.
    Type: Grant
    Filed: September 7, 2015
    Date of Patent: June 14, 2016
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Chi-Wen Chang, Hui Yu Lee, Jui-Feng Kuan, Yi-Kan Cheng, Chin-Hua Wen, Wen-Shen Chou
  • Patent number: 9350372
    Abstract: Among other things, an arrangement for a digital-to-analog converter (DAC) is provided herein. In some embodiments, a metal-oxide semiconductor (MOS) array of the DAS comprises one or more cells respectively comprising one or more current sources. The current sources comprise one or more transistors having a horizontal gate layout. A switch arrangement of the DAS, to which the MOS array is connected, comprises one or more transistors having a vertical gate layout. Accordingly, in some embodiments, a DAC is provided which comprises transistors having a vertical gate layout and transistors having a horizontal gate layout.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: May 24, 2016
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Ching-Ho Chang, Yung-Chow Peng, Jui-Cheng Huang, Wen-Shen Chou
  • Publication number: 20160035715
    Abstract: A semiconductor device includes an edge active cell, an inner active cell and a middle active cell. The edge active cell is located near an edge of the semiconductor device. The edge active cell includes a plurality of fingers. The inner active cell is adjacent to the edge active cell toward a central portion of the semiconductor device. The inner active cell includes a plurality of fingers and at least one of the plurality of fingers of the edge active cell is electrically connected to at least one of the plurality of fingers of the inner active cell. The middle active cell is located near the central portion of the semiconductor device. The middle active cell includes a plurality of fingers and each of the fingers of the middle active cell is electrically connected to each other.
    Type: Application
    Filed: October 9, 2015
    Publication date: February 4, 2016
    Inventors: Yung-Chow PENG, Wen-Shen CHOU, Jaw-Juinn HORNG
  • Publication number: 20150379174
    Abstract: A method for back-end-of-line variation modeling is provided. A bounding box is defined within a design layout. A back-end-of-line variation parameter is determined for the bounding box. The back-end-of-line variation parameter is applied as a constraint for simulation of the design layout.
    Type: Application
    Filed: September 7, 2015
    Publication date: December 31, 2015
    Inventors: Chi-Wen Chang, Hui Yu Lee, Jui-Feng Kuan, Yi-Kan Cheng, Chin-Hua Wen, Wen-Shen Chou
  • Publication number: 20150370946
    Abstract: A method of density-controlled floorplan design for integrated circuits having a plurality of blocks includes positioning decoupling capacitor (DCAP) cells at least partially around a pattern density sensitive block. The method also includes changing at least a portion of a pattern density insensitive block adjacent to the pattern density sensitive block according to at least one pattern density rule.
    Type: Application
    Filed: June 20, 2014
    Publication date: December 24, 2015
    Inventors: Chung-Chieh YANG, Yung-Chow PENG, Chung-Peng HSIEH, Wen-Shen CHOU, Chih-Chiang CHANG
  • Publication number: 20150362540
    Abstract: A circuit for measuring a gain of an amplifier includes a first node coupled to an output of the amplifier, a second node, a first circuit coupled to an input and the output of the amplifier, and a second circuit coupled between the first circuit and the second node. The first circuit is configured to cause a first gain drop in a gain to be measured between the first node and the second node. The second circuit configured to cause a second gain drop in the gain to be measured between the first node and the second node.
    Type: Application
    Filed: September 10, 2014
    Publication date: December 17, 2015
    Inventors: Yung-Chow PENG, Brady YANG, Wen-Shen CHOU
  • Publication number: 20150362539
    Abstract: A testing structure includes a first transistor having a first dopant type connected to a current source. The testing structure further includes a second transistor having a second dopant type, opposite to the first dopant type. The second transistor is connected to a device under test (DUT). The second transistor is connected in series with the first transistor in a cascode arrangement. The cascode arrangement is capable of measuring an output resistance of the DUT of greater than 1 mega-ohm (M?).
    Type: Application
    Filed: May 14, 2015
    Publication date: December 17, 2015
    Inventors: Wen-Shen CHOU, Po-Zeng KANG, Yung-Chow PENG
  • Publication number: 20150362541
    Abstract: A circuit for measuring a bandwidth of an amplifier includes a switch-capacitor circuit and a controller. The switch-capacitor circuit is coupled to an output and an input of the amplifier. The switch-capacitor circuit is switchable between a sampling mode and an amplification mode. The controller is coupled to the switch-capacitor circuit and the output of the amplifier. The controller is configured to switch the switch-capacitor circuit between the sampling mode and the amplification mode, control the amplification mode to have various durations, and determine the bandwidth of the amplifier based on the various durations of the amplification mode and corresponding voltages at the output of the amplifier.
    Type: Application
    Filed: May 28, 2015
    Publication date: December 17, 2015
    Inventors: Yung-Chow PENG, Chih-Chiang CHANG, Wen-Shen CHOU, Brady YANG