Patents by Inventor He-Zhou Wan
He-Zhou Wan 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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Publication number: 20220254404Abstract: A memory device includes a word line driver. The word line driver is coupled through word lines to an array of bit cells. The word line driver includes a first driving circuit, a second driving circuit and a modulating circuit. The first driving circuit and the second driving circuit are configured to select a word line. The modulating circuit is coupled through the selected word line to the first driving circuit and the second driving circuit, and is configured to modulate at least one signal transmitted through the selected word line. The first driving circuit and the second driving circuit are further configured to charge the selected word line to generate a first voltage signal and a second voltage signal at two positions of the selected word line. The first voltage signal is substantially the same as the second voltage signal. A method is also disclosed herein.Type: ApplicationFiled: March 22, 2021Publication date: August 11, 2022Applicants: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., TSMC Nanjing Company Limited, TSMC China Company LimitedInventors: He-Zhou WAN, Xiu-Li YANG, Mu-Yang YE, Yan-Bo SONG
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Publication number: 20220246182Abstract: A circuit includes a first inverter, a second inverter, a first header circuit and a second header circuit. The first inverter is configured to convert a first global write signal into a first local write signal transmitted to a complement bit line. The second inverter is configured to convert a second global write signal into a second local write signal transmitted to a bit line. The first header circuit connects or disconnects a power terminal of the first inverter with a positive reference voltage supply in response to a write enable signal and the second global write signal. The second header circuit connects or disconnects a power terminal of the second inverter with the positive reference voltage supply in response to a write enable signal and the first global write signal.Type: ApplicationFiled: February 23, 2021Publication date: August 4, 2022Applicants: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., TSMC Nanjing Company Limited, TSMC China Company LimitedInventors: He-Zhou WAN, Xiu-Li YANG, Pei-Le LI, Ching-Wei WU
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Patent number: 11398261Abstract: A device includes a memory array, bit line pairs, word lines, a modulation circuit and a control signal generator. The memory array has bit cells arranged in rows and columns. Each bit line pair is connected to a respective column of bit cells. Each word line is connected to a respective row of bit cells. The modulation circuit is coupled with at least one bit line pair. The control signal generator is coupled with the modulation circuit. The control signal generator includes a tracking wiring with a tracking length positively correlated with a depth distance of the word lines. The control signal generator is configured to produce a control signal, switching to a first voltage level for a first time duration in reference with the tracking length, for controlling the modulation circuit. A method of controlling aforesaid device is also disclosed.Type: GrantFiled: January 25, 2021Date of Patent: July 26, 2022Assignees: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., TSMC NANJING COMPANY LIMITED, TSMC CHINA COMPANY LIMITEDInventors: Xiu-Li Yang, He-Zhou Wan, Mu-Yang Ye, Lu-Ping Kong, Ming-Hung Chang
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Patent number: 11393509Abstract: A circuit includes a first inverter, a second inverter, a first header circuit and a second header circuit. The first inverter is configured to convert a first global write signal into a first local write signal transmitted to a complement bit line. The second inverter is configured to convert a second global write signal into a second local write signal transmitted to a bit line. The first header circuit connects or disconnects a power terminal of the first inverter with a positive reference voltage supply in response to a write enable signal and the second global write signal. The second header circuit connects or disconnects a power terminal of the second inverter with the positive reference voltage supply in response to a write enable signal and the first global write signal.Type: GrantFiled: February 23, 2021Date of Patent: July 19, 2022Assignees: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., TSMC NANJING COMPANY LIMITED, TSMC CHINA COMPANY LIMITEDInventors: He-Zhou Wan, Xiu-Li Yang, Pei-Le Li, Ching-Wei Wu
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Publication number: 20220215868Abstract: An integrated circuit includes a plurality of memory cells, a first pair of complementary data lines, and a second pair of complementary data lines. The plurality of memory cells include a first array of memory cells and a second array of memory cells. The first pair of complementary data lines are coupled to the first array of memory cells. The second pair of complementary data lines are different from the first pair of complementary data lines and are coupled to the second array of memory cells. A number of memory cells in the first array of memory cells is different from a number of memory cells in the second array of memory cells.Type: ApplicationFiled: March 25, 2022Publication date: July 7, 2022Applicants: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD., TSMC CHINA COMPANY LIMITEDInventors: Xiu-Li YANG, He-Zhou WAN, Kuan CHENG, Ching-Wei WU
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Publication number: 20220215867Abstract: An integrated circuit includes multiple memory cells, a first pair of complementary data lines, a second pair of complementary data lines, multiple first word lines, and multiple second word lines. The memory cells include a first array of memory cells and a second array of memory cells. The first pair of complementary data lines are coupled to the first array of memory cells. The second pair of complementary data lines are coupled to the second array of memory cells. Lengths of the first pair of complementary data lines are shorter than lengths of the second pair of complementary data lines. The first word lines and the second word lines are arranged according to a predetermined ratio of a number of the first word lines to a number of the second word lines. The predetermined ratio is less than 1.Type: ApplicationFiled: March 25, 2022Publication date: July 7, 2022Applicants: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD., TSMC CHINA COMPANY LIMITEDInventors: Xiu-Li YANG, He-Zhou WAN, Kuan CHENG, Ching-Wei WU
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Publication number: 20220199124Abstract: A circuit includes a power management circuit and a memory circuit. The power management circuit is configured to receive a first control signal and a second control signal, and to supply a first supply voltage, a second supply voltage and a third supply voltage. The first control signal has a first voltage swing, and the second control signal has a second voltage swing different from the first voltage swing. The first control signal causes the power management circuit to enter a power management mode having a first state and a second state. The memory circuit is coupled to the power management circuit, and is in the first state or the second state in response to at least the first supply voltage supplied by the power management circuit.Type: ApplicationFiled: February 3, 2021Publication date: June 23, 2022Inventors: Xiu-Li YANG, Ching-Wei WU, He-Zhou WAN, Ming-En BU
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Publication number: 20220189541Abstract: A circuit includes a tracking word line, a power switch, a tracking bit line, a sense circuit. The power switch is coupled between the tracking word line and a first node. The power switch is configured to discharge a voltage level on the first node in response to a clock pulse signal transmitted through the tracking word line to the power switch. The tracking bit line is coupled between the first node and a plurality of tracking cells in a memory array. The sense circuit is coupled between the first node and a second node. The sense circuit is configured to generate a negative bit line enable signal in response to that the voltage level on the first node is below a threshold voltage value of the sense circuit.Type: ApplicationFiled: February 23, 2021Publication date: June 16, 2022Applicants: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., TSMC Nanjing Company Limited, TSMC China Company LimitedInventors: Xiu-Li YANG, Lu-Ping KONG, Kuan CHENG, He-Zhou WAN
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Publication number: 20220189971Abstract: A memory device includes a first isolation cell, a first memory array of a first memory segment, a second memory array of a second memory segment, a first decoder cell of the first memory segment and a second decoder cell of the second memory segment. The first isolation cell extends in a first direction. The first memory array of the first memory segment abuts a first boundary of the first isolation cell in a second direction different from the first direction. The second memory array of the second memory segment abuts a second boundary, opposite to the first boundary, of the first isolation cell in the second direction. The first decoder cell of the first memory segment and the second decoder cell of the second memory segment are arranged on opposite sides of the first isolation cell.Type: ApplicationFiled: April 8, 2021Publication date: June 16, 2022Applicants: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., TSMC CHINA COMPANY LIMITEDInventors: Xiu-Li YANG, He-Zhou WAN, Yan-Bo SONG
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Publication number: 20220165315Abstract: A device includes a memory array, bit line pairs, word lines, a modulation circuit and a control signal generator. The memory array has bit cells arranged in rows and columns. Each bit line pair is connected to a respective column of bit cells. Each word line is connected to a respective row of bit cells. The modulation circuit is coupled with at least one bit line pair. The control signal generator is coupled with the modulation circuit. The control signal generator includes a tracking wiring with a tracking length positively correlated with a depth distance of the word lines. The control signal generator is configured to produce a control signal, switching to a first voltage level for a first time duration in reference with the tracking length, for controlling the modulation circuit. A method of controlling aforesaid device is also disclosed.Type: ApplicationFiled: January 25, 2021Publication date: May 26, 2022Applicants: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., TSMC NANJING COMPANY LIMITED, TSMC CHINA COMPANY LIMITEDInventors: Xiu-Li YANG, He-Zhou WAN, Mu-Yang YE, Lu-Ping KONG, Ming-Hung CHANG
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Publication number: 20220165319Abstract: A device includes memory banks, a first pair of write data wirings, a second pair of write data wirings and a global write circuit. The first pair of write data wirings is connected to a first group among the memory banks. The second pair of write data wirings is connected to a second group among the memory banks. In response to a first clock signal, the global write circuit generates a first global write signal and a first complement global write signal transmitted to the first group among the memory banks through the first pair of write data wirings. In response to a second clock signal, the global write circuit generates a second global write signal and a second complement global write signal transmitted to the second group among the memory banks through the second pair of write data wirings.Type: ApplicationFiled: April 13, 2021Publication date: May 26, 2022Applicants: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., TSMC CHINA COMPANY LIMITEDInventors: Xiu-Li YANG, Kuan CHENG, He-Zhou WAN, Wei-Yang JIANG
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Publication number: 20220139452Abstract: A device is disclosed. The device includes a first tracking control line, a first tracking circuit, a first sense circuit, and a precharge circuit. The first tracking control line is configured to transmit a first tracking control signal. The first tracking circuit is configured to generate, in response to the first tracking control signal, a first tracking signal associated with first tracking cells in a memory array. The first sense circuit is configured to receive the first tracking signal, and is configured to generate a first sense tracking signal in response to the first tracking signal. The precharge circuit is configured to generate, in response to a rising edge of the first sense tracking signal and a falling edge of a read enable delayed signal, a precharge signal for precharging data lines associated with memory cell in the memory array. A method is also disclosed herein.Type: ApplicationFiled: November 30, 2020Publication date: May 5, 2022Applicants: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD., TSMC Nanjing Company Limited, TSMC China Company LimitedInventors: Xiu-Li YANG, He-Zhou WAN, Lu-Ping KONG, Wei-Yang JIANG
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Patent number: 11289141Abstract: An integrated circuit includes a first array of memory cells, a second array of memory cells, a first pair of complementary data lines, a second pair of complementary data lines, and a third pair of complementary data lines. The first pair of complementary data lines extend along the first array of memory cells, and are coupled to the first array of memory cells. The second pair of complementary data lines extend along the second array of memory cells, and are coupled to the first pair of complementary data lines. The third pair of complementary data lines extend along the second array of memory cells, and are coupled to the second array of memory cells. A number of rows of memory cells in the first array of memory cells is different from a number of rows of memory cells in the second array of memory cells.Type: GrantFiled: February 18, 2020Date of Patent: March 29, 2022Assignees: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD., TSMC CHINA COMPANY LIMITEDInventors: Xiu-Li Yang, He-Zhou Wan, Kuan Cheng, Ching-Wei Wu
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Publication number: 20220069807Abstract: A latch circuit includes a latch clock generator configured to generate a latched clock signal based on a clock signal and a first enable signal, and an input latch coupled to the latch clock generator to receive the latched clock signal. The input latch is configured to generate a latched output signal based on the latched clock signal and an input signal. In response to the first enable signal having a disabling logic level, the latch clock generator is configured to set a logic level of the latched clock signal to a corresponding disabling logic level, regardless of the clock signal. The latch clock generator includes a first inverter configured to generate an inverted signal of the first enable signal, and a NAND gate coupled to the first inverter to receive the inverted signal of the first enable signal. The NAND gate is configured to generate the latched clock signal based on the clock signal and the inverted signal of the first enable signal.Type: ApplicationFiled: November 12, 2021Publication date: March 3, 2022Inventors: XiuLi YANG, Kuan CHENG, He-Zhou WAN, Ching-Wei WU, Wenchao HAO
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Publication number: 20210383052Abstract: A method includes specifying a target memory macro, and determining failure rates of function-blocks in the target memory macro based on an amount of transistors and area distributions in a collection of base cells. The method also includes determining a safety level of the target memory macro, based upon a failure-mode analysis of the target memory macro, from a memory compiler, based on the determined failure rate.Type: ApplicationFiled: May 28, 2021Publication date: December 9, 2021Inventors: Ching-Wei WU, Ming-En BU, He-Zhou WAN, Hidehiro FUJIWARA, Xiu-Li YANG
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Patent number: 11190169Abstract: A latch circuit includes a latch clock generator configured to generate a latched clock signal based on a clock signal and a first enable signal, and an input latch coupled to the latch clock generator to receive the latched clock signal. The input latch is configured to generate a latched output signal based on the latched clock signal and an input signal. In response to the first enable signal having a disabling logic level, the latch clock generator is configured to set a logic level of the latched clock signal to a corresponding disabling logic level, regardless of the clock signal.Type: GrantFiled: February 20, 2020Date of Patent: November 30, 2021Assignees: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., TSMC CHINA COMPANY, LIMIIEDInventors: XiuLi Yang, Kuan Cheng, He-Zhou Wan, Ching-Wei Wu, Wenchao Hao
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Publication number: 20210203310Abstract: A latch circuit includes a latch clock generator configured to generate a latched clock signal based on a clock signal and a first enable signal, and an input latch coupled to the latch clock generator to receive the latched clock signal. The input latch is configured to generate a latched output signal based on the latched clock signal and an input signal. In response to the first enable signal having a disabling logic level, the latch clock generator is configured to set a logic level of the latched clock signal to a corresponding disabling logic level, regardless of the clock signal.Type: ApplicationFiled: February 20, 2020Publication date: July 1, 2021Inventors: XiuLi YANG, Kuan CHENG, He-Zhou WAN, Ching-Wei WU, Wenchao HAO
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Publication number: 20210201972Abstract: An integrated circuit includes a first array of memory cells, a second array of memory cells, a first pair of complementary data lines, a second pair of complementary data lines, and a third pair of complementary data lines. The first pair of complementary data lines extend along the first array of memory cells, and are coupled to the first array of memory cells. The second pair of complementary data lines extend along the second array of memory cells, and are coupled to the first pair of complementary data lines. The third pair of complementary data lines extend along the second array of memory cells, and are coupled to the second array of memory cells. A number of rows of memory cells in the first array of memory cells is different from a number of rows of memory cells in the second array of memory cells.Type: ApplicationFiled: February 18, 2020Publication date: July 1, 2021Applicants: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD., TSMC CHINA COMPANY LIMITEDInventors: Xiu-Li YANG, He-Zhou WAN, Kuan CHENG, Ching-Wei WU
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Patent number: 11042688Abstract: A method includes specifying a target memory macro with one or more parameters, finding function-blocks in the target memory macro, and determining failure rates of the function-blocks based on an amount of transistors and area distributions in a collection of base cells. The method includes generating a failure-mode analysis for the target memory macro, from a memory compiler, based on the failure rates of the function-blocks. The method includes determining a safety level of the target memory macro, based upon the failure-mode analysis of the target memory macro.Type: GrantFiled: June 9, 2020Date of Patent: June 22, 2021Assignees: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD., TSMC CHINA COMPANY, LIMITEDInventors: Ching-Wei Wu, Ming-En Bu, He-Zhou Wan, Hidehiro Fujiwara, Xiu-Li Yang
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Publication number: 20210183423Abstract: A circuit includes a selection circuit configured to receive a first address from a first port and a second address from a second port, a first latch circuit coupled to the selection circuit and configured to output each of the first address and the second address received from the selection circuit, a decoder, and a control circuit. The control circuit is configured to generate a plurality of signals configured to cause the decoder to decode each of the first address and the second address.Type: ApplicationFiled: February 23, 2021Publication date: June 17, 2021Inventors: XiuLi YANG, Ching-Wei WU, He-Zhou WAN, Kuan CHENG, Luping KONG