Patents by Inventor Zhenming Zhou

Zhenming Zhou 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).

  • Publication number: 20240062827
    Abstract: A memory device can include a memory device coupled with a processing device. The processing device causes a first erase operation to be performed at a block, where the first erase operation causes a pre-program voltage and a first erase voltage having a first magnitude to be applied to the block. The processing device causes an erase detection operation to be performed at the block. The processing device determines that the block fails to satisfy the erase detection operation responsive to causing the erase detection operation to be performed. The processing device further causes a second erase operation to be performed at the block responsive to determining that the block failed the erase detection operation, where the second erase operation causes a second erase voltage having a second magnitude to be applied to the block.
    Type: Application
    Filed: August 15, 2023
    Publication date: February 22, 2024
    Inventors: Ronit Roneel Prakash, Pitamber Shukla, Ching-Huang Lu, Murong Lang, Zhenming Zhou
  • Publication number: 20240061600
    Abstract: Aspects of the present disclosure configure a system component, such as memory sub-system controller, to perform empty page scan operations. The controller selects a portion of the set of memory components that is empty and ready to be programmed. The controller reads one or more signals from the selected portion of the set of memory components. The controller generates an error count value representing whether the portion of the set of memory components is valid for programming based on a result of reading the one or more signals from the selected portion. The controller updates a scan frequency for performing the empty page scan operations for the portion of the set of memory components based on the error count value.
    Type: Application
    Filed: August 17, 2022
    Publication date: February 22, 2024
    Inventors: Peng Zhang, Murong Lang, Christina Papagianni, Zhenming Zhou
  • Publication number: 20240062834
    Abstract: A processing device in a memory sub-system detects an occurrence of a data integrity check trigger event in the memory sub-system, and in response, identifies a memory die of a plurality of memory dies in the memory sub-system. The processing device further determines a read margin associated with a first distribution of memory cells of the identified memory die, and determines an adaptive scan frequency for the identified memory die based on the read margin associated with the first distribution of memory cells.
    Type: Application
    Filed: August 19, 2022
    Publication date: February 22, 2024
    Inventors: Li-Te Chang, Murong Lang, Zhenming Zhou
  • Publication number: 20240062832
    Abstract: Apparatus and methods are disclosed, including an apparatus that includes a set of memory components of a memory sub-system. The set of memory components includes a processing device that initiates a corrective read (CR) operation on a set of memory components. The set of memory components includes a pillar that includes a channel and a plurality of transistors. The processing device applies a charge to a first word line (WL) comprising a first transistor of a plurality of transistors to neutralize charges in the channel and senses a charge distribution of a second WL comprising a second transistor of the plurality of transistors adjacent to the first transistor based on the charge applied to the first WL that neutralized the charges in the channel.
    Type: Application
    Filed: August 19, 2022
    Publication date: February 22, 2024
    Inventors: Yu-Chung Lien, Jun Wan, Zhenming Zhou
  • Publication number: 20240061583
    Abstract: A system includes a memory device and a processing device, operatively coupled with the memory device, to perform operations including: receiving a request to perform a memory access operation on a set of cells associated with a wordline of the memory device; determining that the wordline is disposed on a first deck of the memory deck; responsive to determining that the wordline is disposed on the first deck, determining that the wordline is associated with a first group of wordlines associated with the first deck; and responsive to determining that the wordline is associated with the first group of wordlines associated with the first deck, performing the memory access operation on the set of cells connected to the wordline using a first time sense parameter, wherein the first time sense parameter corresponds to the first group of wordlines associated with the first deck.
    Type: Application
    Filed: August 17, 2022
    Publication date: February 22, 2024
    Inventors: Zhenming Zhou, Ching-Huang Lu, Murong Lang
  • Publication number: 20240055060
    Abstract: Implementations described herein relate to detecting a memory write reliability risk without using a write verify operation. In some implementations, a memory device may perform a program operation that includes a single program pulse and that does not include a program verify operation immediately after the single program pulse. The memory device may set a flag value based on comparing a transition time and a transition time threshold. The transition time may be a time to transition from a first voltage to a second voltage during the program operation. The memory device may selectively perform a mitigation operation based on whether the flag value is set to a first value or a second value.
    Type: Application
    Filed: August 15, 2022
    Publication date: February 15, 2024
    Inventors: Yu-Chung LIEN, Zhenming ZHOU, Tomer Tzvi ELIASH
  • Publication number: 20240055052
    Abstract: Methods, systems, and apparatuses include determining an operation type for an operation. A sensing time is elected using the operation type. The operation is executed using the sensing time.
    Type: Application
    Filed: August 15, 2022
    Publication date: February 15, 2024
    Inventors: Yu-Chung Lien, Vivek Shivhare, Vinh Diep, Zhenming Zhou
  • Publication number: 20240053901
    Abstract: Methods, systems, and apparatuses include receiving a command directed to a portion of memory. A cycle number for the portion of memory is determined. A group to which the portion of memory belongs is determined. A bitline voltage is determined using the cycle number and the group. The command is executed using the bitline voltage.
    Type: Application
    Filed: August 15, 2022
    Publication date: February 15, 2024
    Inventors: Yu-Chung Lien, Ching-Huang Lu, Zhenming Zhou
  • Publication number: 20240055054
    Abstract: A method includes determining that a program operation includes a first pass to apply a first voltage distribution to a plurality of memory cells and a second pass to apply a second voltage distribution to the plurality of memory cells, performing the first pass of the program operation using a first sensing time, and performing the second pass of the program operation using a second sensing time during the second pass of the program operation, where the first sensing time is shorter than the second sensing time.
    Type: Application
    Filed: August 12, 2022
    Publication date: February 15, 2024
    Inventors: Yu-Chung Lien, Zhenming Zhou
  • Publication number: 20240053896
    Abstract: Methods, systems, and apparatuses include receiving a command directed to a portion of memory. A cycle number for the portion of memory is determined. A group to which the portion of memory belongs is determined. A sensing time is determined using the cycle number and the group. The command is executed using the sensing time.
    Type: Application
    Filed: August 15, 2022
    Publication date: February 15, 2024
    Inventors: Yu-Chung Lien, Zhenming Zhou, Murong Lang, Ching-Huang Lu
  • Publication number: 20240045601
    Abstract: In some implementations, a memory device may detect a read command associated with reading data stored by the memory device. The memory device may determine whether the read command is from a host device in communication with the memory device. The memory device may select, based on whether the read command is from the host device, one of a first voltage pattern or a second voltage pattern to be applied to memory cells of the memory device to execute the read command, wherein the first voltage pattern is selected if the read command is from the host device and the second voltage pattern is selected if the read command is not from the host device, wherein the second voltage pattern is different from the first voltage pattern. The memory device may execute the read command using a selected one of the first voltage pattern or the second voltage pattern.
    Type: Application
    Filed: August 4, 2022
    Publication date: February 8, 2024
    Inventors: Yu-Chung LIEN, Ching-Huang LU, Zhenming ZHOU
  • Publication number: 20240046998
    Abstract: Apparatus and methods are disclosed, including an apparatus that includes a set of memory components of a memory sub-system. The set of memory components include a first memory block comprising first units of linearly arranged memory cells and a second memory block comprising second units of linearly arranged memory cells. The set of memory components include a slit portion dividing the first and second memory blocks. The slit portion includes a capacitor in which a first metal portion of the capacitor is adjacent to the first units of linearly arranged memory cells and a second metal portion of the capacitor is adjacent to the second units of linearly arranged memory cells.
    Type: Application
    Filed: August 2, 2022
    Publication date: February 8, 2024
    Inventors: Yu-Chung Lien, Ching-Huang Lu, Zhenming Zhou
  • Publication number: 20240045595
    Abstract: A processing device in a memory sub-system determines whether a media endurance metric associated with a memory block of a memory device satisfies one or more conditions. In response to the one or more conditions being satisfied, one or more read margin levels corresponding to a page type associated with the memory device are determined. A machine learning model is applied to the one or more read margin levels to generate a margin prediction value based on the page type and a wordline group associated with the memory device. Based on the margin prediction value, the memory device is assigned to a selected bin of a set of bins. A media scan operation is executed on the memory device in accordance with a scan frequency associated with the selected bin.
    Type: Application
    Filed: August 3, 2022
    Publication date: February 8, 2024
    Inventors: Li-Te Chang, Murong Lang, Charles See Yeung Kwong, Vamsi Pavan Rayaprolu, Seungjune Jeon, Zhenming Zhou
  • Publication number: 20240046990
    Abstract: Implementations described herein relate to a memory device with a fast write mode to mitigate power loss. In some implementations, the memory device may detect a condition associated with power supplied to the memory device. The memory device may detect one or more pending write operations to be performed to cause data to be written to memory cells of the memory device. The memory device may switch from a first voltage pattern, previously used by the memory device to write data to one or more memory cells of the memory device, to a second voltage pattern based on detecting the condition and based on detecting the one or more pending write operations. The memory device may perform at least one write operation, of the one or more pending write operations, using the second voltage pattern.
    Type: Application
    Filed: August 3, 2022
    Publication date: February 8, 2024
    Inventors: Yu-Chung LIEN, Juane LI, Sead ZILDZIC, JR., Zhenming ZHOU
  • Publication number: 20240046981
    Abstract: A memory subsystem receives a first read command and a second read command. Responsive to determining that the first read command originated from a host system, the memory subsystem selects a reverse read trim setting. Responsive to determining that the second read command did not originate from the host system, the memory subsystem selects a forward read trim setting. The memory subsystem executes the first read command using the reverse read trim setting. The memory subsystem executes the second read command using the forward read trim setting.
    Type: Application
    Filed: August 4, 2022
    Publication date: February 8, 2024
    Inventors: Yu-Chung Lien, Zhenming Zhou
  • Patent number: 11894090
    Abstract: A system includes a memory device having groups of managed units and a processing device coupled to the memory device. The processing device, during power on of the memory device, causes a read operation to be performed at a subset of a group of managed units and determines a bit error rate related to data read from the subset of the group of managed units. The bit error rate is a directional bit error rate resulting from an erroneously determined state compared to a programmed state that transitions between two opposing states. In response to the bit error rate satisfying a threshold criterion, the processing device causes a rewrite of the data stored at the group of managed units.
    Type: Grant
    Filed: March 6, 2023
    Date of Patent: February 6, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Zhenlei Shen, Tingjun Xie, Zhenming Zhou
  • Publication number: 20240038311
    Abstract: A method includes designating a first subset of non-volatile memory with a first reliability designation, designating a second subset of non-volatile memory blocks with a second reliability designation, configuring the first subset of non-volatile memory blocks and the second subset of non-volatile memory blocks in a first verification mode, writing data to first subset of non-volatile memory blocks and the second subset of non-volatile memory blocks in the absence of write verification.
    Type: Application
    Filed: July 27, 2022
    Publication date: February 1, 2024
    Inventors: Yu-Chung Lien, Ankit V. Vashi, Zhenming Zhou, Jung Sheng Hoei
  • Publication number: 20240028248
    Abstract: Methods, systems, and devices for cross-temperature mitigation in a memory system are described. A memory system may determine a first temperature of the memory system. Based on the first temperature satisfying a first threshold, the memory system may write a set of data to a first block of the memory system that is configured with a first rate for performing scan operations to determine error information for the first block. The memory system may then determine a second temperature of the memory system after writing the set of data to the first block. Based on the second temperature satisfying a second threshold, the memory system may transfer the set of data to a second block of the memory system that is configured with a second rate for performing scan operations to determine error information for the second block.
    Type: Application
    Filed: July 19, 2022
    Publication date: January 25, 2024
    Inventors: Murong Lang, Christina Papagianni, Zhenming Zhou, Ting Luo
  • Publication number: 20240029802
    Abstract: An example system can include a memory device and a processing device. The memory device can include a group of memory cells. The processing device can be coupled to the memory device. The processing device can be configured to determine a distance of a memory die from a center of a memory component. The processing device can be configured to perform a read disturb operation on the memory die based on the determined distance use a first voltage window for a set of memory cells of the group of memory cells during a first time period.
    Type: Application
    Filed: July 22, 2022
    Publication date: January 25, 2024
    Inventors: Zhenming Zhou, Murong Lang, Li-Te Chang
  • Patent number: 11881284
    Abstract: A first read operation is performed on a first set of memory cells addressable by a first wordline (WL), and a second read operation is performed on a second set of memory cells addressable by a second WL, wherein the first set of memory cells and the second set of memory cells are comprised by an open TU of memory cells. A first threshold voltage offset bin associated with the first WL is identified. A second threshold voltage offset bin associated with the second WL is identified. Respective threshold voltage offset bins for each WL of a plurality of WLs coupled to respective sets of memory cells comprised by the open TU are determined based on at least one of the first threshold voltage offset bin and the second threshold voltage offset bin. Respective default threshold voltages for each WL of the plurality of WLs are updated based on the threshold voltage offset bins.
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: January 23, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Murong Lang, Zhenming Zhou, Jian Huang, Zhongguang Xu, Jiangli Zhu