Patents by Inventor Po-Hao Lee

Po-Hao Lee 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: 20210142840
    Abstract: An integrated circuit device is provided. The integrated circuit device includes: a functional device including a selection device; and a bias generator circuit coupled to the selection device and configured to detect a leakage current of the functional device and generate a bias voltage based on the detected leakage current. The bias voltage is provided to the selection device to control the selection device.
    Type: Application
    Filed: March 5, 2020
    Publication date: May 13, 2021
    Inventors: Yen-An Chang, Po-Hao Lee, Chia-Fu Lee, Yi-Chun Shih, Yu-Der Chih
  • Patent number: 10937467
    Abstract: A device includes a circuit cell, a first switching unit, and a second switching unit. The first switching unit is configured to output an auxiliary signal. The second switching unit is coupled between the first switching unit and the circuit cell, and configured to transmit a write voltage and an auxiliary signal to the circuit cell.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: March 2, 2021
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Po-Hao Lee, Yi-Chun Shih
  • Publication number: 20200227133
    Abstract: Memory devices and methods of repairing a memory are provided. A first array includes normal memory cells, and a second array includes repair memory cells. The repair memory cells are configured to be used in place of the normal memory cells. A look-up table comprises memory bitcells configured to store a set of entries including addresses of defective memory cells of the normal memory cells. A match circuit is configured to evaluate whether an input memory address is stored as a defective address in the memory bitcells. The match circuit is also configured to generate a selection signal for selecting the normal memory cells or the repair memory cells based on the evaluation.
    Type: Application
    Filed: March 25, 2020
    Publication date: July 16, 2020
    Inventors: Yi-Chun Shih, Po-Hao Lee, Chia-Fu Lee, Yu-Der Chih, Yu-Lin Chen
  • Patent number: 10636511
    Abstract: Memory devices and methods of repairing a memory are provided. A first array includes normal memory cells, and a second array includes repair memory cells. The repair memory cells are configured to be used in place of the normal memory cells. A look-up table comprises memory bitcells configured to store a set of entries including addresses of defective memory cells of the normal memory cells. A match circuit is configured to evaluate whether an input memory address is stored as a defective address in the memory bitcells. The match circuit is also configured to generate a selection signal for selecting the normal memory cells or the repair memory cells based on the evaluation.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: April 28, 2020
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Yi-Chun Shih, Po-Hao Lee, Chia-Fu Lee, Yu-Der Chih, Yu-Lin Chen
  • Publication number: 20200051598
    Abstract: A device includes a circuit cell, a first switching unit, and a second switching unit. The first switching unit is configured to output an auxiliary signal. The second switching unit is coupled between the first switching unit and the circuit cell, and configured to transmit a write voltage and an auxiliary signal to the circuit cell.
    Type: Application
    Filed: October 22, 2019
    Publication date: February 13, 2020
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Po-Hao LEE, Yi-Chun SHIH
  • Publication number: 20190385656
    Abstract: A reference circuit for generating a reference current includes a plurality of resistive elements including at least one magnetic tunnel junction (MTJ). A control circuit is coupled to a first terminal of the at least one MTJ and is configured to selectively flow current through the at least one MTJ in the forward and inverse direction to generate a reference current.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 19, 2019
    Inventors: Chia-Fu Lee, Hon-Jarn Lin, Po-Hao Lee, Ku-Feng Lin, Yi-Chun Shih, Yu-Der Chih
  • Patent number: 10490233
    Abstract: A device includes a circuit cell, a voltage regulator, a first switching unit, a second switching unit, and a third switching unit. The voltage regulator is configured to output a write voltage. The first switching unit is configured to generate, in response to a control voltage, a current represented by an auxiliary signal. The second switching unit is configured to receive the auxiliary signal, and to turn on to transmit the auxiliary signal to the circuit cell. The third switching unit is configured to receive the write voltage, and to turn on to transmit the write voltage to the circuit cell.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: November 26, 2019
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Po-Hao Lee, Yi-Chun Shih
  • Publication number: 20190035487
    Abstract: Memory devices and methods of repairing a memory are provided. A first array includes normal memory cells, and a second array includes repair memory cells. The repair memory cells are configured to be used in place of the normal memory cells. A look-up table comprises memory bitcells configured to store a set of entries including addresses of defective memory cells of the normal memory cells. A match circuit is configured to evaluate whether an input memory address is stored as a defective address in the memory bitcells. The match circuit is also configured to generate a selection signal for selecting the normal memory cells or the repair memory cells based on the evaluation.
    Type: Application
    Filed: July 25, 2018
    Publication date: January 31, 2019
    Inventors: Yi-Chun Shih, Po-Hao Lee, Chia-Fu Lee, Yu-Der Chih, Yu-Lin Chen
  • Publication number: 20190019541
    Abstract: A device includes a circuit cell, a voltage regulator, a first switching unit, a second switching unit, and a third switching unit. The voltage regulator is configured to output a write voltage. The first switching unit is configured to generate, in response to a control voltage, a current represented by an auxiliary signal. The second switching unit is configured to receive the auxiliary signal, and to turn on to transmit the auxiliary signal to the circuit cell. The third switching unit is configured to receive the write voltage, and to turn on to transmit the write voltage to the circuit cell.
    Type: Application
    Filed: September 17, 2018
    Publication date: January 17, 2019
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Po-Hao LEE, Yi-Chun SHIH
  • Patent number: 10083724
    Abstract: A device includes a circuit cell, a voltage regulator, and an auxiliary signal generator. The voltage regulator is configured to output a write voltage. The auxiliary signal generator is configured to generate an auxiliary signal according to a reference voltage and a reference current, and to transmit the auxiliary signal and the write voltage to the circuit cell according to select signals.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: September 25, 2018
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Po-Hao Lee, Yi-Chun Shih
  • Patent number: 10014469
    Abstract: The present disclosure provides a semiconductor structure which includes a conductive layer and a resistance configurable structure over the conductive layer. The resistance configurable structure includes a first electrode, a resistance configurable layer over the first electrode, and a second electrode over the resistance configurable layer. The first electrode has a first sidewall, a second sidewall, and a bottom surface on the conductive layer. A joint between the first sidewall and the second sidewall includes an electric field enhancement structure. The present disclosure also provides a method for manufacturing the above semiconductor structure, including patterning a hard mask on a conductive layer; forming a spacer around the hard mask; removing at least a portion of the hard mask; forming a conforming resistance configurable layer on the spacer; and forming a second conductive layer on the conforming resistance configurable layer.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: July 3, 2018
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Po-Hao Lee, Chung-Cheng Chou, Wen-Ting Chu
  • Patent number: 9985203
    Abstract: The present disclosure provides resistive random access memory (RRAM) structures and methods of making the same. The RRAM structures include a bottom electrode having protruded step portion that allows formation of a self-aligned conductive path with a top electrode during operation. The protruded step portion may have an inclination angle of about 30 degrees to 150 degrees. Multiple RRAM structures may be formed by etching through a RRAM stack.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: May 29, 2018
    Assignee: Taiwan Semiconductor Manufacturing Company
    Inventors: Jonathan Tehan Chen, Chung-Cheng Chou, Po-Hao Lee, Kuo-Chi Tu
  • Patent number: 9977441
    Abstract: A device is configured to provide low dropout regulation. An amplifier stage includes a first transistor electrically connected to an output of the device, and a second transistor. A current mirror includes a third transistor electrically connected to the second transistor, and a fourth transistor electrically connected to the third transistor. The auxiliary current source has a control terminal electrically connected to a gate electrode of the fourth transistor. The pull down stage includes a fifth transistor having a gate electrode electrically connected to a drain electrode of the first transistor, and a sixth transistor having a gate electrode electrically connected to the gate electrode of the fourth transistor. The pull up transistor has a gate electrode electrically connected to a drain electrode of the fifth transistor. The first capacitor has a first terminal electrically connected to the gate electrode of the first transistor.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: May 22, 2018
    Assignee: Taiwan Semiconductor Manufacturing Company
    Inventors: Chung-Cheng Chou, Po-Hao Lee
  • Patent number: 9922962
    Abstract: A system and method of cooling a three dimensional integrated circuit (3D IC) using at least one thermoelectric cooler which is connected to the 3D IC by a plurality of conductive pillars. In some embodiments a controller controls power supply to the thermoelectric cooler, and a temperature monitor provides a temperature input to the controller. In some embodiments the controller maintains a temperature of a 3D IC within a predetermined range by cycling power to the thermoelectric cooler.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: March 20, 2018
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Chung-Cheng Chou, Po-Hao Lee, Jonathan Tehan Chen
  • Publication number: 20170323669
    Abstract: A device includes a circuit cell, a voltage regulator, and an auxiliary signal generator. The voltage regulator is configured to output a write voltage. The auxiliary signal generator is configured to generate an auxiliary signal according to a reference voltage and a reference current, and to transmit the auxiliary signal and the write voltage to the circuit cell according to select signals.
    Type: Application
    Filed: July 17, 2017
    Publication date: November 9, 2017
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Po-Hao LEE, Yi-Chun SHIH
  • Patent number: 9728231
    Abstract: A device includes a voltage regulator, an auxiliary signal generator, and a circuit cell. The voltage regulator is configured to output a write voltage. The auxiliary signal generator is configured to output an auxiliary signal. The circuit cell is configured to receive both of the write voltage and the auxiliary signal according to a first select signal and a second select signal.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: August 8, 2017
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Po-Hao Lee, Yi-Chun Shih
  • Publication number: 20170221862
    Abstract: A system and method of cooling a three dimensional integrated circuit (3D IC) using at least one thermoelectric cooler which is connected to the 3D IC by a plurality of conductive pillars. In some embodiments a controller controls power supply to the thermoelectric cooler, and a temperature monitor provides a temperature input to the controller. In some embodiments the controller maintains a temperature of a 3D IC within a predetermined range by cycling power to the thermoelectric cooler.
    Type: Application
    Filed: April 12, 2017
    Publication date: August 3, 2017
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Chung-Cheng CHOU, Po-Hao LEE, Jonathan Tehan CHEN
  • Publication number: 20170162786
    Abstract: The present disclosure provides a semiconductor structure Which includes a conductive layer and a resistance configurable structure over the conductive layer. The resistance configurable structure includes a first electrode, a resistance configurable layer over the first electrode, and a second electrode over the resistance configurable layer. The first electrode has a first sidewall, a second sidewall, and a bottom surface on the conductive layer. A joint between the first sidewall and the second sidewall includes an electric field enhancement structure. The present disclosure also provides a method for manufacturing the above semiconductor structure, including patterning a hard mask on a conductive layer; forming a spacer around the hard mask; removing at least a portion of the hard mask; forming a conforming resistance configurable layer on the spacer; and forming a second conductive layer on the conforming resistance configurable layer.
    Type: Application
    Filed: February 21, 2017
    Publication date: June 8, 2017
    Inventors: PO-HAO LEE, CHUNG-CHENG CHOU, WEN-TING CHU
  • Patent number: 9659647
    Abstract: A circuit for programming a memory cell having a programmable resistance includes a switch. The circuit is configured to apply a programming voltage to the memory cell when the switch is in a first state. The circuit is configured to apply a programming current to the memory cell when the switch is in a second state. The resistance of the memory cell changes from a first resistance state to a second resistance state based on the application of the programming voltage or the programming current to the memory cell.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: May 23, 2017
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Po-Hao Lee, Chung-Cheng Chou, Chia-Fu Lee
  • Patent number: 9625186
    Abstract: A system and method of cooling a three dimensional integrated circuit (3D IC) using at least one thermoelectric cooler which is connected to the 3D IC by a plurality of conductive pillars. In some embodiments a controller controls power supply to the thermoelectric cooler, and a temperature monitor provides a temperature input to the controller. In some embodiments the controller maintains a temperature of a 3D IC within a predetermined range by cycling power to the thermoelectric cooler.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: April 18, 2017
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chung-Cheng Chou, Po-Hao Lee, Jonathan Tehan Chen