Patents by Inventor Hidehiro Fujiwara
Hidehiro Fujiwara 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: 20250124966Abstract: A memory device includes a memory array including a plurality of word lines, each of the plurality of word lines operatively coupled to a corresponding set of memory cells, and a controller operatively coupled to the memory array. The controller is configured to receive a first address signal indicating a first word line that is physically arranged with respect to the controller by a first distance, assert the first word line through a first signal with a first pulse width, receive a second address signal indicating a second word line that is physically arranged with respect to the controller by a second distance, assert the second word line through a second signal with a second pulse width, and adjust one of the first pulse width or the second pulse width based on the first distance and the second distance.Type: ApplicationFiled: January 2, 2024Publication date: April 17, 2025Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Hidehiro Fujiwara, Yi-Hsin Nien, Venkateswara Reddy Konudula, Nikhil Puri, Yen-Huei Chen
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Publication number: 20250118632Abstract: A memory device may comprise a substrate, a plurality of memory cells, and a header device. The substrate may have a first side and a second side opposite to each other. The plurality of memory cells may be formed on the first side of the substrate. The header device may be formed on the first side of the substrate. The header device can be configured to selectively couple a supply voltage through a first combination of power delivery paths or a second combination of power delivery paths to the plurality of memory cells based on a control signal.Type: ApplicationFiled: October 10, 2023Publication date: April 10, 2025Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Yi-Hsin Nien, Chih-Yu Lin, Hidehiro Fujiwara, Yen-Huei Chen
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Patent number: 12260903Abstract: A memory array is disclosed. The memory array includes a plurality of memory cells disposed over a substrate. Each of the memory cells is coupled to a corresponding one of a plurality of word lines and a corresponding one of a plurality of bit line pairs. First four of the memory cells that are coupled to four consecutive ones of the word lines and to a first one of the bit line pairs are abutted to one another on the substrate along a single lateral direction.Type: GrantFiled: July 12, 2022Date of Patent: March 25, 2025Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Yi-Hsin Nien, Hidehiro Fujiwara, Chih-Yu Lin, Yen-Huei Chen
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Patent number: 12260897Abstract: A memory device includes a memory array having a first memory cell in a first column of the memory array, a second memory cell in the first column of the memory array, a first read bit line extending in a column direction and connected to the first memory cell to read data from the first memory cell, and a second read bit line extending in the column direction and connected to the second memory cell to read data from the second memory cell.Type: GrantFiled: July 21, 2022Date of Patent: March 25, 2025Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Hidehiro Fujiwara, Yi-Hsun Chiu, Yih Wang
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Patent number: 12260904Abstract: A memory device is provided. The memory device includes a plurality of memory cells arranged in a matrix of a plurality of rows and a plurality of columns. A first column of the plurality of columns of the matrix includes a first plurality of memory cells of the plurality of memory cells, a first pair of bit lines connected to each of the first plurality of bit cells, and a second pair of bit lines connectable to the first pair of bit lines through a plurality of switches.Type: GrantFiled: December 15, 2022Date of Patent: March 25, 2025Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Hidehiro Fujiwara, Chia-En Huang, Yen-Huei Chen, Jui-Che Tsai, Yih Wang
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Patent number: 12261152Abstract: A 3D IC structure includes multiple die layers, such as a top die layer and a bottom die layer. The top die layer and/or the bottom die layer each includes devices such as computing units, Analog-to-Digital converters, analog circuits, RF circuits, logic circuits, sensors, Input/Output devices, and/or memory devices. The devices on the first and the second die layers are laterally surrounded by, or adjacent, vertical interconnect structures (VIS).Type: GrantFiled: March 28, 2024Date of Patent: March 25, 2025Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Tzu-Hsien Yang, Hiroki Noguchi, Hidehiro Fujiwara, Yih Wang
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Publication number: 20250094126Abstract: A memory circuit includes a column of memory cells configured to receive a set of kth bits of a number H of bits of each input data element of a plurality of input data elements, and each memory cell of the column of memory cells is configured to multiply the kth bit of a corresponding input data element of the plurality of data elements with a first weight data element stored in the memory cell, and to generate a corresponding first product data element. The memory circuit includes an adder tree configured to generate a summation data element based on each of the first product data elements.Type: ApplicationFiled: December 4, 2024Publication date: March 20, 2025Inventors: Yu-Der CHIH, Hidehiro FUJIWARA, Yi-Chun SHIH, Po-Hao LEE, Yen-Huei CHEN, Chia-Fu LEE, Jonathan Tsung-Yung CHANG
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Publication number: 20250078889Abstract: Systems and method are provided for a memory circuit. In embodiments, the circuit includes a plurality of memory cells corresponding to a word of data and a global write word line. A plurality of local write lines are connected to a subset of the plurality of memory cells of the word of data. Selection logic is configured to activate a particular subset of memory cells for writing via a particular local write line based on a signal on the global write word line and a selection signal associated with the particular subset of memory cells.Type: ApplicationFiled: November 15, 2024Publication date: March 6, 2025Inventors: Yi-Hsin Nien, Hidehiro Fujiwara, Yen-Huei Chen
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Patent number: 12245412Abstract: A device includes first and second gate electrodes, a word line and a first metal island. The first gate electrode corresponds to transistors of a memory cell. The second gate electrode is separated from the first gate electrode and corresponds to the transistors. The word line is coupled to the memory cell and located between the first and the second gate electrodes. The first metal island is configured to couple a first power supply to the memory cell. A first boundary of the first metal island is located between first and second boundaries of the first gate electrode and is located between first and second boundaries of the word line, and each of the first boundary of the first gate electrode and the first boundary of the word line is located between first and second boundaries of the first metal island.Type: GrantFiled: July 31, 2023Date of Patent: March 4, 2025Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.Inventors: Hidehiro Fujiwara, Wei-Min Chan, Chih-Yu Lin, Yen-Huei Chen, Hung-Jen Liao
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Publication number: 20250068390Abstract: A system, circuit, and method of operation of the system and circuit are disclosed. In one aspect, a device includes a computation circuit, a memory array, and a controller. The controller can determine that one or more input data bits to the computation circuit or one or more memory bits provided from the memory array are all in a first logic state. In response to determining that the one or more input data bits or the one or more memory bits are all in the first logic state, the controller can generate a control signal to disable at least one component of the computation circuit.Type: ApplicationFiled: January 5, 2024Publication date: February 27, 2025Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Je-Min Hung, Haruki Mori, Chia-Fu Lee, Hidehiro Fujiwara
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Publication number: 20250063709Abstract: A method (of manufacturing a memory device) includes forming active regions extending in a first direction; over the active regions, doing as follows including, forming gate structures extending in a second direction perpendicular to the first direction, and forming contact-to-source/drain structures (MD structures) which extend in the second direction and are interspersed among corresponding ones of the gate structures; forming via-to-gate/MD (VGD) structures over corresponding ones of the gate structures and the MD structures; in a first metallization layer over the VGD structures, forming first front-side segments extending in the first direction and including one or more front-side routing (FRTE) segments; under the active regions, forming buried segment-to-source/drain structures (BVD structures); and in a first buried metallization layer under the BVD structures, forming first back-side segments extending in the first direction and including one or more first back-side power grid (BPG) segments.Type: ApplicationFiled: November 5, 2024Publication date: February 20, 2025Inventors: Hidehiro FUJIWARA, Chih-Yu LIN, Yen-Huei CHEN, Wei-Chang ZHAO, Yi-Hsin NIEN
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Patent number: 12230318Abstract: A memory device includes a first word line and a second word line. A first portion of the first word line is formed in a first metal layer, a second portion of the first word line is formed in a second metal layer above the first metal layer, and a third portion of the first word line is formed in a third metal layer below the second metal layer. A first portion of the second word line is formed in the first metal layer. A second portion of the second word line is formed in the second metal layer. The first portion, the second portion, and the third portion of the first word line have sizes that are different from each other, and the first portion and the second portion of the second word line have sizes that are different from each other.Type: GrantFiled: July 22, 2022Date of Patent: February 18, 2025Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.Inventors: Yi-Hsin Nien, Wei-Chang Zhao, Chih-Yu Lin, Hidehiro Fujiwara, Yen-Huei Chen, Ru-Yu Wang
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Publication number: 20250054537Abstract: A memory cell includes a write port and a read port. The write port includes two cross-coupled inverters that form a storage unit. The cross-coupled inverters are connected between a first power source signal line and a second power source signal line. The write port also includes a first local interconnect line in an interconnect layer that is connected to the second power source signal line. The read port includes a transistor that is connected to the storage unit in the write port and to the second power source signal line, and a second local interconnect line in the interconnect layer that is connected to the second power source signal line. The second local interconnect line in the read port is separate from the first local interconnect line in the write port.Type: ApplicationFiled: July 30, 2024Publication date: February 13, 2025Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Hidehiro Fujiwara, Hsien-Yu Pan, Chih-Yu Lin, Yen-Huei Chen, Wei-Chang Zhao
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Publication number: 20250046367Abstract: A memory circuit includes an array including a plurality of memory cells arranged across a plurality of columns and a plurality of voltage control circuits, each of the plurality of voltage control circuits operatively coupled to the memory cells of a corresponding one of the plurality of columns. Each of the plurality of voltage control circuits includes a first portion configured to provide a first voltage drop in coupling a supply voltage to the memory cells of the corresponding column and a second portion configured to provide a second voltage drop in coupling the supply voltage to the memory cells of the corresponding column. The first voltage drop is substantially smaller than the second voltage drop.Type: ApplicationFiled: February 20, 2024Publication date: February 6, 2025Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Kao-Cheng Lin, Yen-Huei Chen, Wei Min Chan, Hidehiro Fujiwara, Wei-Cheng Wu, Pei-Yuan Li, Chien-Chen Lin, Shang Lin Wu
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Publication number: 20250014614Abstract: A memory device includes a first memory array comprising first memory cells; a second memory array comprising second memory cells; a third memory array comprising third memory cells, the second memory array interposed between the first memory array and the third memory array along a lateral direction; a first bit line segment extending along the lateral direction and coupled to each of the first memory cells; a second bit line segment extending along the lateral direction and coupled to each of the second memory cells; and a third bit line segment extending along the lateral direction and coupled to each of the third memory cells. The first bit line segment is formed in a first metallization layer, the second bit line segment is formed in a second metallization layer, and the third bit line segment is formed in a third metallization layer.Type: ApplicationFiled: October 20, 2023Publication date: January 9, 2025Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Yi-Hsin Nien, Hidehiro Fujiwara, Chih-Yu Lin, Yen-Huei Chen
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Publication number: 20240429902Abstract: A circuit includes a first Dual Interlocked Storage Cell (DICE) component, a second DICE component, a third DICE component, and a fourth DICE component operatively coupled to one another as a loop. The first and second DICE components form a first sub-latch configured to receive an input signal, the third and fourth DICE components form a second sub-latch configured to receive the same input signal, the first sub-latch is configured to provide, at a first node, an intermediate signal based on the input signal, and the second sub-latch is configured to provide, at a second node, the same intermediate signal based on the input signal. The circuit includes a first inverter configured to logically invert the intermediate signal and provide, at a third node, an output signal. The circuit includes a second inverter configured to logically invert the intermediate signal and provide, at the third node, the output signal.Type: ApplicationFiled: October 4, 2023Publication date: December 26, 2024Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Hidehiro Fujiwara, Yu Jung Li, Yueh Chiang, Wei-Chang Zhao, Yi-Hsin Nien, Kinshuk Khare
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Patent number: 12164882Abstract: A memory circuit includes a selection circuit, a column of memory cells, and an adder tree. The selection circuit is configured to receive input data elements, each input data element including a number of bits equal to H, and output a selected set of kth bits of the H bits of the input data elements. Each memory cell of the column of memory cells includes a first storage unit configured to store a first weight data element and a first multiplier configured to generate a first product data element based on the first weight data element and a first kth bit of the selected set of kth bits. The adder tree is configured to generate a summation data element based on each of the first product data elements.Type: GrantFiled: March 16, 2021Date of Patent: December 10, 2024Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Yu-Der Chih, Hidehiro Fujiwara, Yi-Chun Shih, Po-Hao Lee, Yen-Huei Chen, Chia-Fu Lee, Jonathan Tsung-Yung Chang
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Publication number: 20240404588Abstract: A semiconductor device includes a first memory cell, a second memory cell, a third memory cell, and a fourth memory cell operatively arranged along a first one of a plurality of columns, and operatively arranged in a first one, a second one, a third one, and a fourth one of a plurality of rows, respectively. The first column operatively corresponds to a first pair of bit lines and a second pair of bit lines. The first to fourth rows operatively correspond to a first word line, a second word line, a third word line, and a fourth word line, respectively. The first pair of bit lines are operatively coupled to the first and second memory cells. The second pair of bit lines are operatively coupled to the third and fourth memory cells.Type: ApplicationFiled: June 2, 2023Publication date: December 5, 2024Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Yi-Hsin Nien, Chih-Yu Lin, Hidehiro Fujiwara, Yen-Huei Chen
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Publication number: 20240404566Abstract: Header circuitry for a memory device includes multiple backside power rails that form distinct voltage sources for a plurality of switching devices in the header circuitry. The header circuitry includes at least one region of a first conductivity type. A first section in the first region includes one backside power rail (BPR) that forms a first voltage source that provides a first voltage. A second section in the same first region includes another BPR that forms a second voltage source that provides a second voltage that is different from the first voltage.Type: ApplicationFiled: July 25, 2024Publication date: December 5, 2024Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Haruki MORI, Chien-Chi TIEN, Chia-En HUANG, Hidehiro FUJIWARA, Yen-Huei CHEN, Feng-Lun CHEN
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Patent number: 12159688Abstract: Systems and method are provided for a memory circuit. In embodiments, the circuit includes a plurality of memory cells corresponding to a word of data and a global write word line. A plurality of local write lines are connected to a subset of the plurality of memory cells of the word of data. Selection logic is configured to activate a particular subset of memory cells for writing via a particular local write line based on a signal on the global write word line and a selection signal associated with the particular subset of memory cells.Type: GrantFiled: June 5, 2023Date of Patent: December 3, 2024Assignee: Taiwan Semiconductor Manufacturing Company LimitedInventors: Yi-Hsin Nien, Hidehiro Fujiwara, Yen-Huei Chen