Having Fuse Element Patents (Class 365/225.7)
  • Patent number: 11908535
    Abstract: Provided are a memory device and a memory controller, which are configured to repair a weak word line, and a method of operating a storage device including the memory device and the memory controller. A memory device includes a memory cell array including a plurality of normal word lines and at least one spare word line, and a repair controller configured to set memory cells connected to at least one weak word line to a first operation mode and further configured to set memory cells connected to the at least one spare word line to a second operation mode. The at least one weak word line is detected from among the normal word lines based on a test result.
    Type: Grant
    Filed: December 2, 2021
    Date of Patent: February 20, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jinmin Seok, Jonghwa Kim
  • Patent number: 11894091
    Abstract: A system, program product, and method for processing synchronized memory repairs. The method includes identifying a faulty memory row from a plurality of functioning memory rows in a memory array. The method also includes executing memory row repair operations directed toward the faulty memory row and identifying a repair row to operationally replace the faulty memory row. The method also includes creating a multiple hot state within a memory decoder. The memory decoder includes logic circuitry for executing operation of the plurality of functioning memory rows. The method further includes activating a wordline of the identified repair row through the multiple hot state, and executing one or more memory operations on the identified repair row though the memory decoder. Accordingly, the embodiments disclosed herein facilitate synchronization of the repair row and functioning memory rows within the memory array, as well as any associated peripheral signals.
    Type: Grant
    Filed: March 23, 2022
    Date of Patent: February 6, 2024
    Assignee: International Business Machines Corporation
    Inventors: Yaron Freiman, Noam Jungmann, Tomer Abraham Cohen, Elazar Kachir, Hezi Shalom
  • Patent number: 11893276
    Abstract: In some examples, a system may include a plurality of memory blocks, a first data bus coupled to the plurality of memory blocks in a memory device, a second data bus coupled to the plurality of memory blocks, a controller configured to perform memory read and write operations on the plurality of memory blocks via the first data bus, and a non-volatile storage (NVS) data transfer circuit configured to transfer data in a first memory block of the plurality of memory blocks to a NVS device via the second data bus. The first memory block may be a cold data block least accessed among the plurality of memory blocks. The cold data transfer may be performed via the second data bus when a different memory block is being accessed via the first data bus concurrently. The second data bus may be a fuse bus in the memory device.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: February 6, 2024
    Assignee: Micron Technology, Inc.
    Inventor: Yuan He
  • Patent number: 11887682
    Abstract: An anti-fuse memory unit circuit, an array circuit and a reading and writing method are disclosed. The advantages of the device and method include: 1. the anti-fuse memory cell circuit is a pure combinational circuit, compared to time sequence circuit, after a delay of a certain time, this disclosed device closes all paths and stops the logic action of entire circuit, thus lowering the static power consumption to approximately 0; 2. this circuit constituted two positive feedback loops through the design of a switch and a logic calculation module, which enables its readout circuit to read “0” or “1” more reliably; 3. this circuit can eliminate a complicated timing sequence control part, even output the anti-fuse codes directly without latching the readout circuit output OUTA/OUTB; 4. this circuit layout is flexible.
    Type: Grant
    Filed: February 22, 2020
    Date of Patent: January 30, 2024
    Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
    Inventor: Xin Li
  • Patent number: 11881240
    Abstract: A read/write method and a memory are provided. The read/write method includes: issuing a read command to a memory, wherein the read command points to an address; reading to-be-read data from a storage unit corresponding to the address to which the read command points; and in response to an error occurring in the to-be-read data, marking the address to which the read command points as disabled. When executing a read/write operation on the memory, the address of the storage unit is marked to distinguish an enabled storage unit from a failed storage unit in real time. A data error or a data loss can be avoided, thereby greatly improving the reliability and the service life of the memory.
    Type: Grant
    Filed: August 7, 2021
    Date of Patent: January 23, 2024
    Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
    Inventor: Shuliang Ning
  • Patent number: 11868220
    Abstract: Methods, systems, and devices for efficient power scheme for redundancy are described. A memory device may include circuitry that stores memory address information related to one or more defective or unreliable memory components and that compares memory address information to memory addresses targeted for memory access operations. The memory device may selectively distribute a targeted memory address to one or more circuits within the circuitry based on whether those circuits store memory address information. Additionally or alternatively, the memory device may selectively power one or more circuits within the circuitry based on whether those circuits store memory address information.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: January 9, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Richard E. Fackenthal, Duane R. Mills
  • Patent number: 11869615
    Abstract: The embodiments provide a method for reading and writing and a memory device. The method for reading and writing includes: applying a read command to the memory device, the read command pointing to address information; reading data to be read out from a memory cell corresponding to the address information pointed to by the read command; and associating the address information pointed to by the read command with a spare memory cell if an error occurs in the data to be read out. The method for reading and writing provided by the present disclosure greatly improves reliability of the memory device and prolongs lifespan of the memory device.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: January 9, 2024
    Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
    Inventor: Shuliang Ning
  • Patent number: 11854652
    Abstract: A sense amplifier is biased to reduce leakage current equalize matched transistor bias during an idle state. A first read select transistor couples a true bit line and a sense amplifier true (SAT) signal line and a second read select transistor couples a complement bit line and a sense amplifier complement (SAC) signal line. The SAT and SAC signal lines are precharged during a precharge state. An equalization circuit shorts the SAT and SAC signal lines during the precharge state. A differential sense amplifier circuit for latching the memory cell value is coupled to the SAT signal line and the SAC signal line. The precharge circuit and the differential sense amplifier circuit are turned off during a sleep state to cause the SAT and SAC signal lines to float. A sleep circuit shorts the SAT and SAC signal lines during the sleep state.
    Type: Grant
    Filed: November 10, 2022
    Date of Patent: December 26, 2023
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Russell J. Schreiber, Ryan T. Freese, Eric W. Busta
  • Patent number: 11843030
    Abstract: A fuse element, a semiconductor device, and a method for activating a backup unit are provided. The fuse element includes an active area, which includes a source region and a drain region beside the source region, a gate region disposed on the active area, and a shallow trench isolation (STI) structure surrounding the active area. In addition, the drain region includes a terminal configured to receive a stress voltage, such that a conductive path is established through the drain region to the source region.
    Type: Grant
    Filed: March 10, 2022
    Date of Patent: December 12, 2023
    Assignee: NANYA TECHNOLOGY CORPORATION
    Inventors: Yi-Ju Chen, Jui-Hsiu Jao
  • Patent number: 11798649
    Abstract: Disclosed are a defect repair circuit and a defect repair method. The defect repair circuit includes: a test module, configured to perform defect test on a memory cell array in a test module to determine a defective memory cell, and output test address information and defect flag signal corresponding to the memory cell; a defect information storage module, connected with the test module, configured to store defect address information responsive to the defect flag signal, the defect address information being the test address information of the defective memory cell, and further configured to output first address information responsive to an externally input repair selection signal, the first address information being one of multiple pieces of defect address information; and a repair module, connected with the defect information storage module and configured to repair a corresponding defective memory cell according to the received first address information.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: October 24, 2023
    Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
    Inventor: Liang Zhang
  • Patent number: 11790969
    Abstract: Endurance mechanisms are introduced for memories such as non-volatile memories for broad usage including caches, last-level cache(s), embedded memory, embedded cache, scratchpads, main memory, and storage devices. Here, non-volatile memories (NVMs) include magnetic random-access memory (MRAM), resistive RAM (ReRAM), ferroelectric RAM (FeRAM), phase-change memory (PCM), etc. In some cases, features of endurance mechanisms (e.g., randomizing mechanisms) are applicable to volatile memories such as static random-access memory (SRAM), and dynamic random-access memory (DRAM). The endurance mechanisms include a wear leveling scheme that uses index rotation, outlier compensation to handle weak bits, and random swap injection to mitigate wear out attacks.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: October 17, 2023
    Assignee: KEPLER COMPUTING INC.
    Inventors: Christopher B. Wilkerson, Sasikanth Manipatruni, Rajeev Kumar Dokania, Amrita Mathuriya
  • Patent number: 11735266
    Abstract: An antifuse-type one time programming memory cell includes a select device, a following device and an antifuse transistor. A first terminal of the select device is connected with a bit line. A second terminal of the select device is connected with a first node. A select terminal of the select device is connected with a word line. A first terminal of the following device is connected with the first node. A second terminal of the following device is connected with a second node. A control terminal of the following device is connected with a following control line. A first drain/source terminal of the antifuse transistor is connected with the second node. A gate terminal of the antifuse transistor is connected with an antifuse control line. A second drain/source terminal of the antifuse transistor is in a floating state.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: August 22, 2023
    Assignee: EMEMORY TECHNOLOGY INC.
    Inventors: Lun-Chun Chen, Jiun-Ren Chen, Ping-Lung Ho, Hsin-Ming Chen
  • Patent number: 11704255
    Abstract: Memory devices, systems including memory devices, and methods of operating memory devices are described, in which security measures may be implemented to control access to a fuse array (or other secure features) of the memory devices based on a secure access key. In some cases, a customer may define and store a user-defined access key in the fuse array. In other cases, a manufacturer of the memory device may define a manufacturer-defined access key (e.g., an access key based on fuse identification (FID), a secret access key), where a host device coupled with the memory device may obtain the manufacturer-defined access key according to certain protocols. The memory device may compare an access key included in a command directed to the memory device with either the user-defined access key or the manufacturer-defined access key to determine whether to permit or prohibit execution of the command based on the comparison.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: July 18, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Nathaniel J. Meier, Brenton P. Van Leeuwen
  • Patent number: 11699483
    Abstract: Memory systems with burst mode having logic gates as sense elements and related methods are provided. A memory system comprises a memory array including a first set of memory cells coupled to a first wordline, a second set of memory cells coupled to a second wordline, and a plurality of sense elements, not including any sense amplifiers. The control unit is configured to generate control signals for: in response to a burst mode read request, simultaneously: (1) asserting a first wordline signal on the first wordline coupled to each of a plurality of first set of bitlines, and (2) asserting a second wordline signal on the second wordline coupled to each of a plurality of second set of bitlines, and as part of a burst, outputting data corresponding to a subset of each of the first set of memory cells and the second set of memory cells.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: July 11, 2023
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Pramod Kolar, Stephen Edward Liles, Gregory Christopher Burda
  • Patent number: 11698830
    Abstract: A semiconductor memory includes storage arrays, at least one verification module and gating circuits. Each verification module corresponds to multiple storage arrays. The verification module is configured to verify whether an error occurs in data information of the corresponding storage arrays. Each verification module is connected to a group of global data buses. The gating circuits are respectively connected to the storage arrays and the global data buses, and the gating circuits are configured to control on and off of a data transmission path connecting the global data buses to the storage arrays.
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: July 11, 2023
    Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
    Inventors: KangLing Ji, Hongwen Li
  • Patent number: 11670379
    Abstract: Arrays of memory cells might include a data line, a source, a plurality of pass gates connected in series between the data line and the source, a plurality of unit column structures each having a respective plurality of series-connected non-volatile memory cells connected in series with a respective plurality of series-connected field-effect transistors, wherein a channel of each non-volatile memory cell of its respective plurality of series-connected non-volatile memory cells and a channel of each field-effect transistor of its respective plurality of series-connected field-effect transistors are selectively connected to one another, and a plurality of backside gate lines each connected to the second control gate of a respective pass gate of the plurality of pass gates, wherein, for each unit column structure of the plurality of unit column structures, the channel of a particular field-effect transistor of its respective plurality of field-effect transistors is capacitively coupled to the first channel of a
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: June 6, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Yoshiaki Fukuzumi, Jun Fujiki, Shuji Tanaka, Masashi Yoshida, Masanobu Saito, Yoshihiko Kamata
  • Patent number: 11626154
    Abstract: An example apparatus may perform concurrent threshold voltage compensation in a memory array with distributed row redundancy. The example apparatus may include a row decoder configured to configured to, in response to a determination that the prime row address matches a defective prime row address, concurrently initiate a threshold voltage compensation operation on both of a prime row of the respective plurality of prime rows of memory cells of a first row section of the plurality of row sections corresponding to the prime row address and the respective redundant row of a second row section of the plurality of row sections. The row decoder may be further configured to stop an access operation associated with the prime row from proceeding based on a comparison of subset of match signals from either the first or second pluralities of row sections.
    Type: Grant
    Filed: June 17, 2021
    Date of Patent: April 11, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Jacob Rice, Hiroshi Akamatsu
  • Patent number: 11545210
    Abstract: Apparatuses, systems, and methods for fuse based device identification. A device may include a number of fuses which are used to encode permanent information on the device. The device may receive an identification request, and may generate an identification number based on the states of at least a portion of the fuses. For example, the device may include a hash generator, which may generate the identification number by using the fuse information as a seed for a hash algorithm.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: January 3, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Yoshihito Morishita, Chikara Kondo
  • Patent number: 11410740
    Abstract: A multi-fuse memory cell is disclosed. The circuit includes: a first fuse element electrically coupled to a first transistor, a gate of the first transistor is electrically coupled to a first selection signal; a second fuse element electrically coupled to a second transistor, a gate of the second transistor is electrically coupled to a second selection signal, both the first transistor and the second transistor are grounded; and a programming transistor electrically coupled to the first fuse element and the second fuse element, wherein a gate of the programming transistor is electrically coupled to a programming signal.
    Type: Grant
    Filed: July 19, 2021
    Date of Patent: August 9, 2022
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Meng-Sheng Chang, Chia-En Huang, Shao-Yu Chou, Yih Wang
  • Patent number: 11328788
    Abstract: A memory system is disclosed. The memory system includes a first memory array, an error correction code circuit, and a monitor circuit. The error correction code circuit is configured to receive data from the first memory array to correct, at least one error bit in the received data. The error correction code circuit is further configured to generate an error determination signal. The monitor circuit is coupled to the error correction code circuit. The monitor circuit is configured to receive the error determination signal and record at least one fail word address associated with the at least one error bit and corresponding failure times in an error table.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: May 10, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventor: Hiroki Noguchi
  • Patent number: 11307253
    Abstract: An indication of an operating mode of an asynchronous circuit may be received. A determination may be made as to whether the operating mode of the asynchronous circuit corresponds to a self-test of the asynchronous circuit. In response to determining that the operating mode of the asynchronous circuit corresponds to the self-test, a first clock signal may be provided to a first portion of a self-test component in a feedback path of the asynchronous circuit and a second clock signal may be provided to a second portion of the self-test component in the feedback path of the asynchronous circuit. Furthermore, a test value may be generated based on the first clock signal and the second clock signal.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: April 19, 2022
    Assignee: Cryptography Research, Inc.
    Inventor: Matthew Pond Baker
  • Patent number: 11281383
    Abstract: The disclosed systems and methods may secure the fuse programming process in programmable devices to reduce or eliminate malicious discovery of data (e.g., the encryption key, the configuration bitstream) stored in nonvolatile memory via side-channel attacks. A processor may generate a randomized fuse list and the fuses may be blown in the randomized order. Additionally or alternatively, the processor may randomize the wait time between programming of each fuse. Further, the processor may generate a simplified fuse list including only fuses to be blown. The disclosed security systems and methods may be used individually or in combination to prevent determination of sensitive data, such as the encryption key, by monitoring, for example, power consumption in side-channel attacks.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: March 22, 2022
    Assignee: INTEL CORPORATION
    Inventors: Ting Lu, Sean R. Atsatt, Andrew Martyn Draper, Eric Michael Innis
  • Patent number: 11276476
    Abstract: Systems and methods are provided that sense a state of a fuse located in a fuse array. These methods involve a logic gate that selectively transmits outputs from respective comparators based on the combination of outputs received at the logic gate. The comparators generate outputs based on comparing a signal received indicative of the fuse state and a reference voltage. The described systems and methods reduce power consumption of a fuse sensing device since portions of the fuse sensing device are deactivated when not sensing and enable single fuse reading to occur, among other advantages.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: March 15, 2022
    Assignee: Micron Technology, Inc.
    Inventor: Dong Pan
  • Patent number: 11158641
    Abstract: An antifuse One-Time-Programmable memory cell includes a substrate, a select transistor formed on the substrate, and an antifuse capacitor formed on the substrate. The select transistor includes a first gate dielectric layer formed on the substrate, a first gate formed on the gate dielectric layer, a first high-voltage junction formed in the substrate, and a second high-voltage junction formed in the substrate. A source and a drain for the select transistor are formed by the first high-voltage junction and the second high-voltage junction. The antifuse capacitor includes a second gate dielectric layer formed on the substrate, a second gate formed on the gate dielectric layer, a third high-voltage junction formed in the substrate, and a fourth high-voltage junction formed in the substrate. A source and a drain for the antifuse capacitor are respectively formed by the third high-voltage junction and the fourth high-voltage junction.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: October 26, 2021
    Assignee: Zhuhai Chuangfeixin Technology Co., Ltd.
    Inventors: Li Li, Zhigang Wang
  • Patent number: 11152300
    Abstract: An electrical fuse device is disclosed. A circuit apparatus can include the fuse device, a first circuit element and a second circuit element. The fuse includes a first contact that has a first electromigration resistance, a second contact that has a second electromigration resistance and a metal line, which is coupled to the first contact and to the second contact, that has a third electromigration resistance that is lower than the second electromigration resistance. The first circuit element is coupled to the first contact and the second circuit element coupled to the second contact. The fuse is configured to conduct a programming current from the first contact to the second contact through the metal line. Further, the programming current causes the metal line to electromigrate away from the second contact to electrically isolate the second circuit element from the first circuit element.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: October 19, 2021
    Assignee: International Business Machines Corporation
    Inventors: Baozhen Li, Yan Zun Li, Keith Kwong Hon Wong, Chih-Chao Yang
  • Patent number: 11152052
    Abstract: Apparatuses, systems, and methods for fuse based device identification. A device may include a number of fuses which are used to encode permanent information on the device. The device may receive an identification request, and may generate an identification number based on the states of at least a portion of the fuses. For example, the device may include a hash generator, which may generate the identification number by using the fuse information as a seed for a hash algorithm.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: October 19, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Yoshihito Morishita, Chikara Kondo
  • Patent number: 11094388
    Abstract: An anti-fuse device includes an anti-fuse array and a biasing circuit. The anti-fuse array includes an anti-fuse cell that has a gate node, a gate oxide layer and a source-drain node. The biasing circuit is coupled to the anti-fuse array and is configured to bias the gate node of the anti-fuse cell with a first bias voltage during a program operation, and bias the source-drain node of the anti-fuse with a second bias voltage during the program operation. A voltage level of the first bias voltage is lower than a voltage level of the second bias voltage, and a voltage difference between the first bias voltage and the second bias voltage is higher than a gate oxide breakdown voltage of the gate oxide layer.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: August 17, 2021
    Assignee: Winbond Electronics Corp.
    Inventor: Chan Jong Park
  • Patent number: 11029886
    Abstract: The present technology relates to a memory system and a method of operating the memory system. The memory system includes a memory device including a plurality of memory blocks, the memory device configure to perform on each of the plurality of memory blocks at least one of a program operation, a read operation, or an erase operation in response to an internal command; and a controller in communication with a host and the memory device and configured to receive a request from the host and generate the internal command in response to the request from the host, the controller further configured to control the memory device to perform a stress check operation on a first memory block of the plurality of memory blocks in which the program operation has been completed.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: June 8, 2021
    Assignee: SK hynix Inc.
    Inventors: Min Ho Her, Sung Ho Kim, Seung Il Kim, Jae Min Lee
  • Patent number: 10971247
    Abstract: A method includes replacing an address of a first normal memory cell in a first column of a first memory block with a destination address that is an address of a second normal memory cell in a second column of the first memory block, and reassigning the address of the second normal memory cell in the second column of the first memory block to an address of a first redundancy memory cell in a redundancy block of the memory device.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: April 6, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyung-Ryun Kim, Yoon-Na Oh, Hyung-Jin Kim, Hui-Kap Yang, Jang-Woo Ryu
  • Patent number: 10923483
    Abstract: A metal fuse structure may be provided. The metal fuse structure may comprise a first fuse element and a second fuse element. The second fuse element may be adjacent to the first fuse element for a length L. The second fuse element may be spaced apart from first fuse element by a width W.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: February 16, 2021
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Meng-Sheng Chang, Yao-Jen Yang
  • Patent number: 10885997
    Abstract: A one-time programmable (OTP) memory cell, and an OTP memory and a memory system including the same may be provided. The OTP memory cell includes a main OTP cell transistor, a redundant OTP cell transistor, and an access transistor that are connected in series between a first node in a floating state and a second node. The OTP memory cell is configured to apply a program voltage to gates of the main OTP cell transistor and the redundant OTP cell transistor, and a program access voltage lower than the program voltage to a gate of the access transistor, during a program operation.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: January 5, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Min Yeol Ha
  • Patent number: 10878929
    Abstract: A circuit includes an eFuse and a first program device coupled in series between a bit line and a program node, and a second program device configured in parallel with the first program device. The first program device and the second program device are separately controllable.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: December 29, 2020
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Meng-Sheng Chang, Yao-Jen Yang
  • Patent number: 10868021
    Abstract: A semiconductor memory device includes a semiconductor substrate having an active region of a first conductivity type defined by a device isolation layer, a first impurity region in the active region, an anti-fuse gate electrode on the semiconductor substrate and extending across the first impurity region, an anti-fuse gate dielectric layer between the anti-fuse gate electrode and the first impurity region, a selection gate electrode on the semiconductor substrate and extending across the active region, a selection gate dielectric layer between the selection gate electrode and the active region, and a second impurity region in the active region between the selection gate electrode and the anti-fuse gate electrode. The first and second impurity regions have impurities of a second conductivity type. The first impurity region has an impurity concentration less than the impurity concentration of the second impurity region.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: December 15, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jongpil Son
  • Patent number: 10755777
    Abstract: The ROM device has a memory array including memory cells formed by an access element and a data storage element; a high voltage column decoder stage; a high voltage row decoder stage; an analog stage; and a writing stage, wherein the data storage elements are electrically non-programmable and non-modifiable. The memory array is formed by memory cells having a first logic state and by memory cells having a second logic state. The data storage element of the memory cells having the first logic state is formed by a continuous conductive path uninterruptedly connecting the access transistor to the respective bit line, the data storage element of the memory cells having the second logic state is formed by a region of dielectric material insulating the access transistor from the respective bit line.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: August 25, 2020
    Assignee: STMicroelectronics S.R.L.
    Inventors: Marcella Carissimi, Marco Pasotti, Chantal Auricchio
  • Patent number: 10741267
    Abstract: A memory cell includes a first anti-fuse element, a second anti-fuse element, and a selection circuit. The first anti-fuse element has a first terminal, a second terminal being floating, and a control terminal coupled to a first anti-fuse control line. The second anti-fuse element has a first terminal coupled to the first terminal of the first anti-fuse element, a second terminal being floating, and a control terminal coupled to a second anti-fuse control line. The selection circuit is coupled to the first terminal of the first anti-fuse element, the first terminal of the second anti-fuse element, and a source line. The selection circuit controls an electrical connection from the source line to the first terminal of the first anti-fuse element and the first terminal of the second anti-fuse element.
    Type: Grant
    Filed: June 9, 2019
    Date of Patent: August 11, 2020
    Assignee: eMemory Technology Inc.
    Inventor: Dung Le Tan Hoang
  • Patent number: 10693363
    Abstract: Aspects of the present disclosure involve a power module, which may include an inverter circuit employing semiconductor switch dies. In the presence of a failure of a die, which may include an arc from a short, a sensor produces a signal responsive to the failure. The signal initiates an indirect fuse, such as a pyrotechnic element, that opens conductors associated with the die. For example, the die or a related die may be wire bonded to terminals of the module. The indirect element may therefore open the bonds to the terminals to isolate the failed die and/or related dies.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: June 23, 2020
    Inventors: Paul M. White, Mark H. Sherwood, Stephen M. Spiteri, Zachary M. Rubin
  • Patent number: 10672489
    Abstract: An electronic device including: a fuse array including: fuse elements organized along a first direction and a second direction, wherein each fuse element is configured to store information, and a selection circuit configured to provide access to the fuse elements according to positions of the fuse elements along the first direction and the second direction; and a fuse read circuit connected to the fuse array, the fuse read circuit configured to generate a fuse-read output based on reading from one or more of the fuse elements.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: June 2, 2020
    Assignee: Micron Technology, Inc.
    Inventors: John E. Riley, Girish N. Cherussery, Scott E. Smith, Yu-Feng Chen
  • Patent number: 10665311
    Abstract: Apparatuses and methods including anti-fuses and for reading and programming same are disclosed herein. An example apparatus may include an anti-fuse element comprising first, second, and third transistors coupled in series between first and second nodes such that the second transistor is between the first and third transistors. The second transistor is configured to be operated such that a punch-through current flows through the second transistor to indicate that the anti-fuse element has been programmed.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: May 26, 2020
    Assignee: Micron Technology, Inc.
    Inventor: Shinichi Miyatake
  • Patent number: 10629282
    Abstract: An E-fuse circuit comprising: a ring address latch, configured to receive a first input address arranged in serial i bits responding to a first clock signal, and to output a second input address arranged in serial j bits responding to a second clock signal; a control signal generating circuit, configured to receive the second input address, and to decode the second input address to generate first control signals with m bits and second control signals with n bits, wherein the first control signals and the second control signals are transmitted in parallel, and m, n are factors of j; and an E-fuse group, comprising j fuses. If any one of the first control signals has a first logic value and any one of the second control signals has the logic value, a corresponding fuse the E-fuse group is burned.
    Type: Grant
    Filed: June 16, 2019
    Date of Patent: April 21, 2020
    Assignee: Elite Semiconductor Memory Technology Inc.
    Inventors: Tse-Hua Yao, Yi-Fan Chen
  • Patent number: 10600496
    Abstract: Methods, systems, and devices for modifying memory bank operating parameters are described. Operating parameter(s) may be individually adjusted for memory banks or memory bank groups within a memory system based on trimming information. The local trimming information for a memory bank or memory bank group may be stored in a fuse set that also stores repair information for the particular memory bank or in a fuse set that also stores repair information for a memory bank in the particular memory bank group. The local trimming information may be applied to operating parameters for particular memory banks or memory bank groups relative to or instead of global adjustments applied to operating parameters of multiple or all of the memory banks in the memory system.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: March 24, 2020
    Assignee: Micron Technology, Inc.
    Inventors: Christopher G. Wieduwilt, Alan J. Wilson
  • Patent number: 10417455
    Abstract: Described are various embodiments of a hardware security module. For example, in one embodiment, a hardware security module is described to comprise: two or more hardware ports, each one of which operable to electronically receive given input hardware port-specific cryptographic data thereon to initiate execution of an internal cryptographic process as a function thereof; two or more segregated hardware port-specific storage spaces each operatively linked to a corresponding one of said hardware ports via a corresponding hardware link, and storing respective secured hardware port-specific cryptographic data thereon exclusively retrievable as a function of said given input hardware port-specific cryptographic data corresponding thereto; and a cryptographic engine operable to execute said cryptographic process based on said secured port-specific cryptographic data retrieved from said segregated hardware port-specific storage spaces as a function of said given input port-specific cryptographic data.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: September 17, 2019
    Assignee: CRYPTO4A TECHNOLOGIES INC.
    Inventors: Bruno Couillard, Bradley Clare Ritchie, James Ross Goodman, Jean-Pierre Fiset
  • Patent number: 10403380
    Abstract: A semiconductor device with an anti-fuse element includes a semiconductor substrate, a well region of a first conductivity type formed in the semiconductor substrate, and a gate electrode formed over the semiconductor substrate through a gate insulating film, and source regions of a second conductivity type opposite to the first conductivity type formed within the well region at the both ends of the gate electrode. When writing in the fuse element, a first writing potential is applied to the gate electrode, a first reference potential is applied to the well region, an intermediate potential is supplied to the source regions, and the intermediate potential is lower than the first writing potential and higher than the first reference potential.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: September 3, 2019
    Assignee: RENESAS ELECTRONCIS CORPORATION
    Inventor: Hiromichi Takaoka
  • Patent number: 10395731
    Abstract: Memory cells, memory systems and methods are described. In one embodiment, a memory cell includes electrodes and a memory element, and a first electrically conductive structure is formed within dielectric material providing the memory element in a low resistance state as a result of a first voltage of a first polarity being applied across the electrodes. Additionally, the first electrically conductive structure is removed from the dielectric material providing the memory element in a high resistance state as a result of a second voltage of a second polarity, which is opposite to the first polarity, being applied across the electrodes. A permanent and irreversible electrically conductive structure is formed within the dielectric material providing the memory element in the low resistance state as a result of a third voltage of the second polarity and having an increased potential compared with the second voltage being applied across the electrodes.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: August 27, 2019
    Assignee: Micron Technology, Inc.
    Inventors: Wataru Otsuka, Takafumi Kunihiro, Tomohito Tsushima, Makoto Kitagawa, Jun Sumino, D. V. Nirmal Ramaswamy
  • Patent number: 10373698
    Abstract: An electronic device including: a fuse array including fuse cells organized along a first direction and a second direction, wherein each fuse cell includes: a fuse element configured to store information, and a selection circuit configured to provide access to the fuse element according to a position of the fuse cell element along the first direction and the second direction; and a fuse read circuit connected to the fuse array, the fuse read circuit configured to generate a fuse read output based on reading from one or more of the fuse cells simultaneously and in parallel.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: August 6, 2019
    Assignee: Micron Technology, Inc.
    Inventors: John E. Riley, Girish N. Cherussery, Scott E. Smith, Yu-Feng Chen
  • Patent number: 10374152
    Abstract: Magnetic tunnel junction antifuse devices are protected from degradation caused by programming voltage drop across the gates of unselected magnetic tunnel junction antifuses by connecting said magnetic tunnel junctions serially with a first field effect transistor and a second field effect transistor, the first field effect transistor having its gate connected to a positive supply voltage while the gate of the second field effect transistor is switchably connected to a programming voltage, such that when the second field effect transistor of a selected magnetic tunnel junction is switched to direct the programming voltage to program the selected magnetic tunnel junction an unswitched magnetic tunnel junction and the second field effect transistor do not experience a voltage drop across the gates thereof sufficient to degrade.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: August 6, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Anthony J. Annunziata, John K. DeBrosse, Chandrasekharan Kothandaraman
  • Patent number: 10332609
    Abstract: A memory device includes a memory bank accessible via a plurality of memory addresses. The memory device further includes a fuse array comprising a plurality of fuses. The memory device additionally includes a first plurality of local fuse latches disposed outside of the fuse array and configured to provide redundancy for the plurality of memory addresses. The memory device also includes a fuse array broadcasting system comprising an N-bit bus system, wherein the N-bit bus system is communicatively coupled to the fuse array and to the first plurality of local fuse latches, and wherein the fuse array broadcasting system is configured to communicate fuse data from the fuse array to the first plurality of local fuse latches via the N-bit bus system.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: June 25, 2019
    Assignee: Micron Technology, Inc.
    Inventors: John E. Riley, Yu-Feng Chen, Scott E. Smith
  • Patent number: 10333321
    Abstract: The present disclosure provides an overvoltage and overcurrent protection circuit and a mobile terminal. The overvoltage and overcurrent protection circuit comprises a primary protection circuit and a secondary protection circuit. The primary protection circuit comprises a power end coupled to an anode of a cell, a detection end coupled to a cathode of the cell, and a low potential interface end coupled to a ground end of a charging and discharging interface. The secondary protection circuit comprises a high potential cell end, a low potential cell end, and a high potential interface end, in which the high potential cell end is externally coupled to the anode of the cell, the low potential cell end is externally coupled to the cathode of the cell, and the high potential interface end is externally coupled to a power end of the charging and discharging interface.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: June 25, 2019
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang Zhang, Wenqiang Cheng, Dashuai Huang, Yuanxiang Hu, Kewei Wu
  • Patent number: 10304554
    Abstract: A circuit may include a first switch to pre-charge a first voltage line to a first voltage for a first amount of time, such that the first voltage is an opposite polarity as compared to a second voltage coupled to the first voltage line when a first fuse is blown. The circuit may also include a second switch to pre-charge a second voltage line to a third voltage for the first amount of time, such that the third voltage is an opposite polarity as compared to a fourth voltage coupled to the second voltage line when a second fuse is blown. The circuit also includes a latch circuit to amplify a first voltage signal present on the first voltage line and amplify a second voltage signal present on the second voltage line after the first amount of time expires.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: May 28, 2019
    Assignee: Micron Technology, Inc.
    Inventors: Raghukiran Sreeramaneni, Ramachandra R. Jogu, William J. Wilcox, Girish N. Cherussery
  • Patent number: 10274534
    Abstract: A reading circuit for a die ID in a chip is provided. The reading circuit includes a chip damage detection circuit, a switch selector, a fuse controller, and a fuse device, where the fuse device stores the die ID; the fuse controller reads the die ID from the fuse device; the chip damage detection circuit detects whether a processor in the chip is capable of operating properly, so as to obtain a detection result, and notify the switch selector of the detection result; and when the detection result is that the processor is capable of operating properly, the switch selector connects the processor and the fuse controller; and when the detection result is that the processor is not capable of operating properly, the switch selector connects the fuse controller and a maintenance device that is located outside the chip.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: April 30, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Bo Liang, Qi Wang, Yuan Liu
  • Patent number: 10217521
    Abstract: A non-volatile programmable bitcell has a read enable device with a source coupled with a bitline, an anti-fuse device with a gate coupled with a first write line, a drain coupled with a supply voltage and a source coupled with a drain of the read enable device. The bitcell has a fuse device coupled between a second write line and the drain of the read enable device. A magnitude of current flowing in the bitline, when the read enable device is enabled for reading, is dependent both on (1) a voltage level applied to the first write line and anti-fuse device state and on (2) a voltage level applied to the second write line and fuse device state. Usages include in a memory array, such as for FPGA configuration memory. The bitcell can be used as a multi-time programmable element, or to store multiple bit values.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: February 26, 2019
    Assignee: Lattice Semiconductor Corporation
    Inventors: Farrokh Kia Omid-Zohoor, Nguyen Duc Bui, Binh Ly