Patents by Inventor Hung Chang Yu

Hung Chang Yu 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: 11901030
    Abstract: A memory device includes a memory array, a reference voltage generator and a driver circuit. The memory array includes a memory cell. The reference voltage generator is configured to generate a reference voltage based on a threshold voltage of a select transistor of the memory cell. The driver circuit is coupled to the reference voltage generator and is configured to generate at least one of a bit line voltage and a word line voltage according to the reference voltage, wherein the memory cell is driven by the at least one of the bit line voltage or the word line voltage, and the reference voltage generator comprises a resistor that is configured to sense the threshold voltage of the select transistor through a current flowing through the resistor.
    Type: Grant
    Filed: June 24, 2022
    Date of Patent: February 13, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventor: Hung-Chang Yu
  • Publication number: 20230380184
    Abstract: A method includes: providing a modulation circuit including a first resistive element, a second resistive element and a third resistive element; providing a memory array and a regulator connecting the modulation circuit to the memory array, wherein the regulator includes a transistor; determining an operation mode of the memory array; generating a first voltage at a drain terminal of the transistor, wherein the first voltage corresponds to a positive, negative zero temperature coefficient according to a first resistance ratio and a second resistance ratio; during a read operation, providing a first driving current to the memory array in response to the first voltage corresponding to the positive temperature coefficient; and during a write operation, providing a second driving current to the memory array in response to the first voltage corresponding to the negative temperature coefficient.
    Type: Application
    Filed: July 30, 2023
    Publication date: November 23, 2023
    Inventor: HUNG-CHANG YU
  • Publication number: 20230380185
    Abstract: A method includes: providing a modulation circuit and a driving circuit, the modulation circuit configured to generate a temperature-dependent voltage and provide the same to the driving circuit; determined an operation mode of a memory array; providing a first current corresponding to a positive temperature coefficient by the driving circuit in response to the operation mode being a read operation on the memory array; and providing a second current corresponding to a negative temperature coefficient by the driving circuit in response to the operation mode being a write operation on the memory array.
    Type: Application
    Filed: August 8, 2023
    Publication date: November 23, 2023
    Inventor: HUNG-CHANG YU
  • Patent number: 11793000
    Abstract: A method includes: providing a modulation circuit, determined an operation mode of a memory array, providing a first voltage corresponding to a positive temperature coefficient in response to a read operation of the memory array, and providing a second voltage corresponding to a negative temperature coefficient in response to a write operation of the memory array. The modulation circuit is configured to generate a temperature-dependent voltage and provide the same to the memory array.
    Type: Grant
    Filed: March 14, 2021
    Date of Patent: October 17, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventor: Hung-Chang Yu
  • Publication number: 20230178120
    Abstract: A method (for recycling charge from a first bit line of a memory device to a second bit line of the memory device) includes: before pre-filling the second bit line, momentarily closing switches to transfer a first charge from the first bit line which is involved in a first read operation to the second bit line which is involved subsequently in a second read operation; and each of the first bit line and the second bit line being served by a same sense amplifier.
    Type: Application
    Filed: February 7, 2023
    Publication date: June 8, 2023
    Inventors: Hung-Chang YU, Ta-Ching YEH
  • Publication number: 20230086858
    Abstract: A method to control a memory cell in a memory device, where the memory cell includes a switch, a memory element, and a negative resistance device coupled in series, the method includes: determine whether the memory cell is in a read operation or not; during the read operation in the memory cell, apply a read voltage greater than a predetermined threshold voltage of the negative resistance device for making the negative resistance device entering into a negative resistance state. A memory device that includes a memory cell array is also provided.
    Type: Application
    Filed: November 28, 2022
    Publication date: March 23, 2023
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Wen-Chin Lin, Hung-Chang Yu
  • Patent number: 11574658
    Abstract: A semiconductor device includes: a sense amplifier; a branched line selectively connectable to the amplifier; an array of bit lines connected to corresponding memory cells; and an intra-sense-amplifier recycling arrangement configured to do as follows including: recovering a first charge from a first bit line associated with a first one of the memory cells, the first charge being associated with a preceding first evaluation performed by the sense amplifier; and boosting the branched line to a reference voltage including reusing the first charge to at least partially charge the branched line; and wherein the sense amplifier is configured to make a second evaluation of a stored value in a second memory cell relative to the reference voltage.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: February 7, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Hung-Chang Yu, Ta-Ching Yeh
  • Patent number: 11532341
    Abstract: A method to control a memory cell in a memory device, where the memory cell includes a switch, a memory element, and a negative resistance device coupled in series, the method includes: determine whether the memory cell is in a read operation or not; during the read operation in the memory cell, apply a read voltage greater than a predetermined threshold voltage of the negative resistance device for making the negative resistance device entering into a negative resistance state. A memory device that includes a memory cell array is also provided.
    Type: Grant
    Filed: April 29, 2021
    Date of Patent: December 20, 2022
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Wen-Chin Lin, Hung-Chang Yu
  • Publication number: 20220328124
    Abstract: A memory device includes a memory array, a reference voltage generator and a driver circuit. The memory array includes a memory cell. The reference voltage generator is configured to generate a reference voltage based on a threshold voltage of a select transistor of the memory cell. The driver circuit is coupled to the reference voltage generator and is configured to generate at least one of a bit line voltage and a word line voltage according to the reference voltage, wherein the memory cell is driven by the at least one of the bit line voltage or the word line voltage, and the reference voltage generator comprises a resistor that is configured to sense the threshold voltage of the select transistor through a current flowing through the resistor.
    Type: Application
    Filed: June 24, 2022
    Publication date: October 13, 2022
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventor: Hung-Chang Yu
  • Patent number: 11404140
    Abstract: A memory device includes a memory array, a reference voltage generator and a driver circuit. The memory array includes a memory cell for a memory operation. The reference voltage generator is configured to generate a reference voltage based on at least one of a temperature of the memory array or a threshold voltage of a select transistor of the memory cell. The driver circuit is coupled to the reference voltage generator and is configured to generate at least one of a bit line voltage and a word line voltage according to the reference voltage, wherein the memory cell is driven by the at least one of the bit line voltage or the word line voltage.
    Type: Grant
    Filed: January 4, 2021
    Date of Patent: August 2, 2022
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventor: Hung-Chang Yu
  • Publication number: 20220215897
    Abstract: A memory device includes a memory array, a reference voltage generator and a driver circuit. The memory array includes a memory cell for a memory operation. The reference voltage generator is configured to generate a reference voltage based on at least one of a temperature of the memory array or a threshold voltage of a select transistor of the memory cell. The driver circuit is coupled to the reference voltage generator and is configured to generate at least one of a bit line voltage and a word line voltage according to the reference voltage, wherein the memory cell is driven by the at least one of the bit line voltage or the word line voltage.
    Type: Application
    Filed: January 4, 2021
    Publication date: July 7, 2022
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventor: Hung-Chang Yu
  • Publication number: 20210295881
    Abstract: A semiconductor device includes: a sense amplifier; a branched line selectively connectable to the amplifier; an array of bit lines connected to corresponding memory cells; and an intra-sense-amplifier recycling arrangement configured to do as follows including: recovering a first charge from a first bit line associated with a first one of the memory cells, the first charge being associated with a preceding first evaluation performed by the sense amplifier; and boosting the branched line to a reference voltage including reusing the first charge to at least partially charge the branched line; and wherein the sense amplifier is configured to make a second evaluation of a stored value in a second memory cell relative to the reference voltage.
    Type: Application
    Filed: June 8, 2021
    Publication date: September 23, 2021
    Inventors: Hung-Chang YU, Ta-Ching YEH
  • Publication number: 20210249062
    Abstract: A method to control a memory cell in a memory device, where the memory cell includes a switch, a memory element, and a negative resistance device coupled in series, the method includes: determine whether the memory cell is in a read operation or not; during the read operation in the memory cell, apply a read voltage greater than a predetermined threshold voltage of the negative resistance device for making the negative resistance device entering into a negative resistance state. A memory device that includes a memory cell array is also provided.
    Type: Application
    Filed: April 29, 2021
    Publication date: August 12, 2021
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Wen-Chin Lin, Hung-Chang Yu
  • Publication number: 20210202575
    Abstract: A method includes: providing a modulation circuit, determined an operation mode of a memory array, providing a first voltage corresponding to a positive temperature coefficient in response to a read operation of the memory array, and providing a second voltage corresponding to a negative temperature coefficient in response to a write operation of the memory array. The modulation circuit is configured to generate a temperature-dependent voltage and provide the same to the memory array.
    Type: Application
    Filed: March 14, 2021
    Publication date: July 1, 2021
    Inventor: HUNG-CHANG YU
  • Patent number: 11031051
    Abstract: A semiconductor device includes: a sense amplifier; a branched line selectively connectable to the sense amplifier; a recycling arrangement selectively connectable to the branched line; an array of memory cells; an array of bit lines connected to corresponding memory cells in the array of memory cells; a multiplexer configured to selectively connect the branched line to a selected one in the array of memory cells through a corresponding line amongst the array of bit lines; and a controller configured to control the recycling arrangement and the multiplexer to perform intra-sense-amplifier recycling of a gleaned amount of charge (gleaned charge) recovered from a first read operation to a second read operation.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: June 8, 2021
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Hung-Chang Yu, Ta-Ching Yeh
  • Patent number: 11024395
    Abstract: The present disclosure describes an adjustment circuit that can be used, for example, in a memory system with partitioned memory blocks. The adjustment circuit can include a controller circuit, a timer circuit, and a temperature adaptive reference (TAR) generator. The controller circuit can be configured to output a control signal that indicates a memory type (e.g., code memory or data memory) associated with a partitioned memory block. The timer circuit can be configured to output a timing signal for a read memory operation based on the control signal. And, the TAR generator can be configured to adjust a verify reference current for a verify memory operation based on temperature, where the verify reference current is set based on the control signal.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: June 1, 2021
    Inventors: Yu-Der Chih, Hung-Chang Yu, Ku-Feng Lin
  • Patent number: 10998058
    Abstract: The present disclosure describes an adjustment circuit that can be used, for example, in a memory system with partitioned memory blocks. The adjustment circuit can include a controller circuit, a timer circuit, and a temperature adaptive reference (TAR) generator. The controller circuit can be configured to output a control signal that indicates a memory type (e.g., code memory or data memory) associated with a partitioned memory block. The timer circuit can be configured to output a timing signal for a read memory operation based on the control signal. And, the TAR generator can be configured to adjust a verify reference current for a verify memory operation based on temperature, where the verify reference current is set based on the control signal.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: May 4, 2021
    Inventors: Yu-Der Chih, Hung-Chang Yu, Ku-Feng Lin
  • Patent number: 10998024
    Abstract: A method to control a memory cell in a memory device, where the memory cell includes a switch, a memory element and a negative resistance device coupled in series, the method includes: determine whether the memory cell is in a read operation or not; during the read operation in the memory cell, apply a read voltage greater than a predetermined threshold voltage of the negative resistance device for making the negative resistance device entering into a negative resistance state. A memory device that includes a memory cell array is also provided.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: May 4, 2021
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Wen-Chin Lin, Hung-Chang Yu
  • Patent number: 10950658
    Abstract: A circuit includes: a first node to receive a first current; a first resistive element receiving a first branch current of the first current; first transistors each including a first terminal connected to the second end of the first resistive element; a second resistive element connected to the first node and receiving a second branch current of the first current; a second node to receive a second current; a second transistor including a first terminal, the first terminal of the second transistor connected to the second node and receiving a first branch current of the second current; a third resistive element connected to the second node and receiving a second branch current of the second current; wherein a temperature coefficient is adjusted by a resistance of the second resistive element and a resistance of the third resistive element and corresponding to the first current.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: March 16, 2021
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventor: Hung-Chang Yu
  • Publication number: 20210035621
    Abstract: A method to control a memory cell in a memory device, where the memory cell includes a switch, a memory element and a negative resistance device coupled in series, the method includes: determine whether the memory cell is in a read operation or not; during the read operation in the memory cell, apply a read voltage greater than a predetermined threshold voltage of the negative resistance device for making the negative resistance device entering into a negative resistance state. A memory device that includes a memory cell array is also provided.
    Type: Application
    Filed: March 2, 2020
    Publication date: February 4, 2021
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Wen-Chin Lin, Hung-Chang Yu