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).
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Patent number: 12243608Abstract: 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: GrantFiled: January 2, 2024Date of Patent: March 4, 2025Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventor: Hung-Chang Yu
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Patent number: 12183379Abstract: 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: GrantFiled: November 28, 2022Date of Patent: December 31, 2024Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Wen-Chin Lin, Hung-Chang Yu
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Patent number: 12167613Abstract: 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: GrantFiled: July 30, 2023Date of Patent: December 10, 2024Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.Inventor: Hung-Chang Yu
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Publication number: 20240389354Abstract: A semiconductor device includes: a memory array; a modulation circuit including a first resistive element, a second resistive element and a third resistive element; a regulator including a transistor; and a controller configured to: determine an operation mode of the memory array; generate a first regulated voltage at a drain terminal of the transistor, wherein the first regulated voltage corresponds to a positive temperature coefficient, a negative temperature coefficient or a zero temperature coefficient according to a first resistance ratio between the first resistive element and the second resistive element and a second resistance ratio between the second resistive element and the third resistive element; provide a first access voltage to the memory array in response to the first regulated voltage corresponding to the positive temperature coefficient; and provide a second access voltage to the memory array in response to the first regulated voltage corresponding to the negative temperature coefficient.Type: ApplicationFiled: July 29, 2024Publication date: November 21, 2024Inventor: HUNG-CHANG YU
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Publication number: 20240389355Abstract: A semiconductor device includes: a memory array; a modulation circuit configured to generate a temperature-dependent voltage; a driving circuit configured to access the memory array based on the temperature-dependent voltage; and a controller. The controller is configured to: determine an operation mode of the memory array; cause the driving circuit to provide a first current corresponding to a positive temperature coefficient in response to the operation mode being a read operation of the memory array; and cause the driving circuit to provide a second current corresponding to a negative temperature coefficient in response to the operation mode being a write operation of the memory array.Type: ApplicationFiled: July 29, 2024Publication date: November 21, 2024Inventor: HUNG-CHANG YU
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Publication number: 20240136008Abstract: 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: ApplicationFiled: January 2, 2024Publication date: April 25, 2024Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventor: Hung-Chang Yu
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Patent number: 11901030Abstract: 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: GrantFiled: June 24, 2022Date of Patent: February 13, 2024Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventor: Hung-Chang Yu
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Publication number: 20230380185Abstract: 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: ApplicationFiled: August 8, 2023Publication date: November 23, 2023Inventor: HUNG-CHANG YU
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Publication number: 20230380184Abstract: 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: ApplicationFiled: July 30, 2023Publication date: November 23, 2023Inventor: HUNG-CHANG YU
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Patent number: 11793000Abstract: 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: GrantFiled: March 14, 2021Date of Patent: October 17, 2023Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.Inventor: Hung-Chang Yu
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Publication number: 20230178120Abstract: 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: ApplicationFiled: February 7, 2023Publication date: June 8, 2023Inventors: Hung-Chang YU, Ta-Ching YEH
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Publication number: 20230086858Abstract: 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: ApplicationFiled: November 28, 2022Publication date: March 23, 2023Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Wen-Chin Lin, Hung-Chang Yu
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Patent number: 11574658Abstract: 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: GrantFiled: June 8, 2021Date of Patent: February 7, 2023Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Hung-Chang Yu, Ta-Ching Yeh
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Patent number: 11532341Abstract: 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: GrantFiled: April 29, 2021Date of Patent: December 20, 2022Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Wen-Chin Lin, Hung-Chang Yu
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Publication number: 20220328124Abstract: 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: ApplicationFiled: June 24, 2022Publication date: October 13, 2022Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventor: Hung-Chang Yu
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Patent number: 11404140Abstract: 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: GrantFiled: January 4, 2021Date of Patent: August 2, 2022Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventor: Hung-Chang Yu
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Publication number: 20220215897Abstract: 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: ApplicationFiled: January 4, 2021Publication date: July 7, 2022Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventor: Hung-Chang Yu
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Publication number: 20210295881Abstract: 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: ApplicationFiled: June 8, 2021Publication date: September 23, 2021Inventors: Hung-Chang YU, Ta-Ching YEH
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Publication number: 20210249062Abstract: 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: ApplicationFiled: April 29, 2021Publication date: August 12, 2021Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Wen-Chin Lin, Hung-Chang Yu
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Publication number: 20210202575Abstract: 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: ApplicationFiled: March 14, 2021Publication date: July 1, 2021Inventor: HUNG-CHANG YU