Patents by Inventor Yu Der Chih

Yu Der Chih 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: 11450395
    Abstract: A memory circuit includes a first bank of non-volatile memory (NVM) devices, a first plurality of decoders, a first plurality of high-voltage (HV) drivers corresponding to the first plurality of decoders, and a first plurality of HV power switches. A first HV power switch is coupled to each HV driver of the first plurality of HV drivers, and each decoder is configured to generate an enable signal corresponding to a column of the first bank of NVM devices. Each HV driver is configured to output a HV activation signal to the corresponding column of the first bank of NVM devices responsive to a power signal of the first HV power switch and to the enable signal of the corresponding decoder.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: September 20, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Gu-Huan Li, Chen-Ming Hung, Yu-Der Chih
  • Publication number: 20220293141
    Abstract: A sense amplifier includes a voltage comparator with offset compensation, a first clamping device and a second clamping device. The voltage comparator is coupled to a bit line and a reference bit line respectively, and configured to compare a first input voltage and a second input voltage to output a sensing signal. The first clamping circuit and the second clamping circuit trim a voltage corresponding to the bit line and a voltage corresponding to the reference bit line respectively to match the voltage corresponding to the reference bit line with the voltage corresponding to the bit line.
    Type: Application
    Filed: May 31, 2022
    Publication date: September 15, 2022
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Ku-Feng Lin, Yu-Der Chih
  • Patent number: 11442482
    Abstract: A voltage regulator circuit is provided. The voltage regulator circuit includes a voltage regulator configured to provide an output voltage at an output terminal. A plurality of macros are connectable at a plurality of connection nodes of a connector connected to the output terminal of the voltage regulator. A feedback circuit having a plurality of feedback loops is connectable to the plurality of connection nodes. The feedback loop of the plurality of feedback loops, when connected to a connection node of the plurality of connection nodes, is configured to provide an instantaneous voltage of the connection node as a feedback to the voltage regulator. The voltage regulator is configured, in response to the instantaneous voltage, regulate the output voltage to maintain the instantaneous voltage of the connection node approximately equal to a reference voltage.
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: September 13, 2022
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Zheng-Jun Lin, Chung-Cheng Chou, Yu-Der Chih, Chin-I Su
  • Patent number: 11429482
    Abstract: Systems and methods for correcting data errors in memory caused by high-temperature processing of the memory are provided. An integrated circuit (IC) die including a memory is formed. Addresses of memory locations that are susceptible to data loss when subjected to elevated temperatures are determined. Bits of data are written to the memory, where the bits of data include a set of bits written to the memory locations. The set of bits are written to a storage device of the IC die that is not susceptible to data loss when subjected to the elevated temperatures, the subset of bits comprise compressed code. At least one of the bits stored at the addresses is overwritten after subjecting the IC die to an elevated temperature. The at least one of the bits is overwritten based on the set of bits written to the storage device.
    Type: Grant
    Filed: February 18, 2021
    Date of Patent: August 30, 2022
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Yu-Der Chih, Ching-Huang Wang, Yi-Chun Shih, Meng-Chun Shih, C. Y. Wang
  • Publication number: 20220262432
    Abstract: A system includes a global generator and local generators. The global generator is coupled to a memory array, and is configured to generate global signals, according to a number of a computational output of the memory array. The local generators are coupled to the global generator and the memory array, and are configured to generate local signals, according to the global signals. Each one of the local generators includes a first reference circuit and a local current mirror. The first reference circuit is coupled to the global generator, and is configured to generate a first reference signal at a node, in response to a first global signal of the global signals. The local current mirror is coupled to the first reference circuit at the node, and is configured to generate the local signals, by mirroring a summation of at least one signal at the node.
    Type: Application
    Filed: July 1, 2021
    Publication date: August 18, 2022
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Yu-Der CHIH, Meng-Fan CHANG, May-Be CHEN, Cheng-Xin XUE, Je-Syu LIU
  • Publication number: 20220262409
    Abstract: Circuits and methods for compensating mismatches in sense amplifiers are disclosed. In one example, a circuit is disclosed. The circuit includes: a first branch, a second branch, a first plurality of trimming transistors and a second plurality of trimming transistors. The first branch comprises a first transistor, a second transistor, and a first node coupled between the first transistor and the second transistor. The second branch comprises a third transistor, a fourth transistor, and a second node coupled between the third transistor and the fourth transistor. The first node is coupled to respective gates of the third transistor and the fourth transistor. The second node is coupled to respective gates of the first transistor and the second transistor. The first plurality of trimming transistors is coupled to the second transistor in parallel. The second plurality of trimming transistors is coupled to the fourth transistor in parallel.
    Type: Application
    Filed: May 5, 2022
    Publication date: August 18, 2022
    Inventors: Ku-Feng LIN, Yu-Der CHIH, Yi-Chun SHIH, Chia-Fu LEE
  • Publication number: 20220262445
    Abstract: A memory circuit includes a first bank of non-volatile memory (NVM) devices, a first plurality of decoders, a first plurality of high-voltage (HV) drivers corresponding to the first plurality of decoders, and a first plurality of HV power switches. A first HV power switch is coupled to each HV driver of the first plurality of HV drivers, and each decoder is configured to generate an enable signal corresponding to a column of the first bank of NVM devices. Each HV driver is configured to output a HV activation signal to the corresponding column of the first bank of NVM devices responsive to a power signal of the first HV power switch and to the enable signal of the corresponding decoder.
    Type: Application
    Filed: April 22, 2021
    Publication date: August 18, 2022
    Inventors: Gu-Huan LI, Chen-Ming HUNG, Yu-Der CHIH
  • Publication number: 20220253282
    Abstract: In some aspects of the present disclosure, an adder tree circuit is disclosed. In some aspects, the adder tree circuit includes a plurality of full adders (FAs) including: a first subgroup of FAs, wherein each FA of the first subgroup includes a first number of transistors; and a second subgroup of FAs, wherein each FA of the second subgroup includes a second number of transistors, the first number being greater than the second number; wherein each FA of the first subgroup receives a first input from a first one of the second subgroup of FAs and a second input from a second one of the second subgroup of FAs, and each FA provides a first output to a third one of the second subgroup of FAs and a second output to a fourth one of the second subgroup of FAs.
    Type: Application
    Filed: November 22, 2021
    Publication date: August 11, 2022
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chia-Fu Lee, Po-Hao Lee, Yi-Chun Shih, Yu-Der Chih
  • Publication number: 20220252989
    Abstract: A semiconductor fabrication apparatus and a method of using the same are disclosed. In one aspect, the apparatus includes a holder configured to place a substrate and a radiation source configured to provide radiation to transfer a pattern onto the substrate. The apparatus also includes a plurality of sensing devices configured to provide a reference signal based on an intensity of the radiation when the substrate is not present. The apparatus further includes a controller, operatively coupled to the plurality of sensing devices, configured to adjust the intensity of the radiation based on the reference signal.
    Type: Application
    Filed: December 22, 2021
    Publication date: August 11, 2022
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Yu-Der Chih, May-Be Chen, Ya-Chin King, Chrong Jung Lin, Burn Jeng Lin, Bo Yu Lin
  • Publication number: 20220244916
    Abstract: A compute-in-memory (CIM) device has a memory array with a plurality of memory cells arranged in rows and columns. The plurality of memory cells includes a first memory cell in a first row and a first column of the memory array and a second memory cell in the first row and a second column of the memory array. The first and second memory cells are configured to store respective first and second weight signals. An input driver provides a plurality of input signals. A first logic circuit is coupled to the first memory cell to provide a first output signal based on a first input signal from the input driver and the first weight signal. A second logic circuit is coupled to the second memory cell to provide a second output signal based on a second input signal from the input driver and the second weight signal.
    Type: Application
    Filed: July 28, 2021
    Publication date: August 4, 2022
    Inventors: Po-Hao Lee, Chia-Fu Lee, Yi-Chun Shih, Yu-Der Chih, Hidehiro Fujiwara, Haruki Mori, Wei-Chang Zhao
  • Publication number: 20220247394
    Abstract: A circuit includes cross coupled invertors including a first invertor and a second inventor. The first invertor and the second invertor are cross coupled at a first data node and a second data node. An input unit is coupled between the cross-coupled invertors and a power node. The input unit controls the cross-coupled invertors in response to a first input signal received at a first input terminal of the input unit and a second input signal received at a second input terminal of the input unit. A first transistor is connected between the power node and a supply node. The first transistor connects the power node to the supply node in response to an enable signal changing to a first value. A second transistor is connected between the power node and ground. The second transistor connects the power node to the ground in response to the enable signal changing to a second value.
    Type: Application
    Filed: January 29, 2021
    Publication date: August 4, 2022
    Inventors: Chia-Fu Lee, Hon-Jarn Lin, Yu-Der Chih
  • Publication number: 20220236869
    Abstract: An in-memory computing device includes in some examples a two-dimensional array of memory cells arranged in rows and columns, each memory cell made of a nine-transistor current-based SRAM. Each memory cell includes a six-transistor SRAM cell and a current source coupled by a switching transistor, which is controlled by input signals on an input line, to an output line associates with the column of memory cells the memory cell is in. The current source includes a switching transistor controlled by the state of the six-transistor SRAM cell, and a current regulating transistor adapted to generate a current at a level determined by a control signal applied at the gate. The control signal can be set such that the total current in each output line is increased by a factor of 2 in each successive column of the memory cells.
    Type: Application
    Filed: January 22, 2021
    Publication date: July 28, 2022
    Inventors: Yu-Der Chih, Chi-Fu Lee, Jonathan Tsung-Yung Chang
  • Publication number: 20220238155
    Abstract: A memory device includes an array of resistive memory cells with a plurality of word lines connected to the array of resistive memory cells. A voltage compensation controller is configured to determine a word line voltage to be applied to a selected word line of the plurality of word lines. A word line driver is configured apply the determined word line voltage to the selected word line.
    Type: Application
    Filed: April 15, 2022
    Publication date: July 28, 2022
    Inventors: Chien-An Lai, Chung-Cheng Chou, Yu-Der Chih
  • Patent number: 11393512
    Abstract: A memory device is provided, the memory device includes multiple cells arranged in a matrix of multiple rows and multiple columns. The memory device further includes multiple bit lines each of which is connected to first cells of the multiple cells arranged in a row of the multiple rows. A voltage control circuit is connectable to a selected bit line of the multiple bit lines and includes a voltage detection circuit that detects an instantaneous supply voltage and a voltage source selection circuit connected to the voltage detection circuit. The voltage source selection circuit selects a voltage source from multiple voltage sources based on the detected instantaneous supply voltage. The voltage source selection circuit includes a switch that connects the selected voltage source to the selected bit line to provide a write voltage.
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: July 19, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chien-An Lai, Chung-Cheng Chou, Yu-Der Chih
  • Publication number: 20220214943
    Abstract: A method of screening weak bits in a memory array includes dividing the memory array into a first and a second memory array, storing a first set of data in the first memory array, performing a first baking process on the first memory array or applying a first magnetic field to the first memory array, determining that a first portion of the first set of data stored in the first memory array is altered by the first baking process or the first magnetic field, and at least one of replacing memory cells of a first set of memory cells that are storing the first portion of the first set of data with corresponding memory cells in the second memory array of the memory array, or not using the memory cells of the first set of memory cells storing the first portion of the first set of data.
    Type: Application
    Filed: March 24, 2022
    Publication date: July 7, 2022
    Inventors: Yu-Der CHIH, Chia-Fu LEE, Chien-Yin LIU, Yi-Chun SHIH, Kuan-Chun CHEN, Hsueh-Chih YANG, Shih-Lien Linus LU
  • Publication number: 20220215880
    Abstract: A memory device includes: a memory cell array comprising a plurality of memory cells; a temperature sensor configured to detect a temperature of the memory cell array; a write circuit configured to write data into the plurality of memory cells; and a controller coupled to the temperature sensor and the write circuit, wherein the controller is configured to determine a target write pulse width used by the write circuit based on the detected temperature of the memory device.
    Type: Application
    Filed: January 4, 2021
    Publication date: July 7, 2022
    Inventors: Hiroki Noguchi, Yu-Der Chih, Yih Wang
  • Patent number: 11380371
    Abstract: A sense amplifier includes a voltage comparator with offset compensation, a first clamping device and a second clamping device. The voltage comparator is coupled to a bit line and a reference bit line respectively, and configured to compare a first input voltage and a second input voltage to output a sensing signal. The first clamping circuit and the second clamping circuit trim a voltage corresponding to the bit line and a voltage corresponding to the reference bit line respectively to match the voltage corresponding to the reference bit line with the voltage corresponding to the bit line.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: July 5, 2022
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Ku-Feng Lin, Yu-Der Chih
  • Patent number: 11373690
    Abstract: Circuits and methods for compensating mismatches in sense amplifiers are disclosed. In one example, a circuit is disclosed. The circuit includes: a first branch, a second branch, a first plurality of trimming transistors and a second plurality of trimming transistors. The first branch comprises a first transistor, a second transistor, and a first node coupled between the first transistor and the second transistor. The second branch comprises a third transistor, a fourth transistor, and a second node coupled between the third transistor and the fourth transistor. The first node is coupled to respective gates of the third transistor and the fourth transistor. The second node is coupled to respective gates of the first transistor and the second transistor. The first plurality of trimming transistors is coupled to the second transistor in parallel. The second plurality of trimming transistors is coupled to the fourth transistor in parallel.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: June 28, 2022
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Ku-Feng Lin, Yu-Der Chih, Yi-Chun Shih, Chia-Fu Lee
  • Patent number: 11373706
    Abstract: The disclosure is directed to a memory circuit, an electronic device, and a method for implementing a ternary weight for in-memory computing. According to an aspect of the disclosure, the memory circuit includes a first memory cell having a first resistor; a second memory cell having a second resistor, a write driver configured to set the first resistor to a first resistance value, a second write driver configured to set the second resistor to a second resistance value, a differential current sensing circuit configured to determine a differential current between the first memory cell and the second memory cell based on the first resistance value and the second resistance value, and a ternary weight detector configured to determine a ternary weight which is selected among a first ternary weight, a second ternary weight, and a third ternary weight based on the differential current.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: June 28, 2022
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventor: Yu-Der Chih
  • Publication number: 20220199167
    Abstract: A memory device is provided. The memory device includes a first transistor and a second transistor connected in series with the first transistor. The second transistor is programmable between a first state and a second state. A bit line connected to the second transistor. A sense amplifier connected to the bit line. The sense amplifier is operative to sense data from the bit line. A feedback circuit connected to the sense amplifier, wherein the feedback circuit is operative to control a bit line current of the bit-line.
    Type: Application
    Filed: March 14, 2022
    Publication date: June 23, 2022
    Inventor: YU-DER CHIH