Patents by Inventor Ching-Huang Lu

Ching-Huang Lu 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: 11967387
    Abstract: Processing logic in a memory device initiates a program operation on a memory array, the program operation comprising a program phase and a program verify phase. The processing logic further causes a negative voltage signal to be applied to a first selected word line of a block of the memory array during the program verify phase of the program operation, wherein the first selected word line is coupled to a corresponding first memory cell of a first plurality of memory cells in a string of memory cells in the block, wherein the first selected word line is associated with the program operation.
    Type: Grant
    Filed: October 20, 2022
    Date of Patent: April 23, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Ching-Huang Lu, Vinh Q. Diep, Zhengyi Zhang, Yingda Dong
  • Publication number: 20240120010
    Abstract: Control logic in a memory device initiates a program operation on a memory array, the program operation comprising a seeding phase. During the seeding phase, the control logic causes a seeding voltage to be applied to a string of memory cells in a data block of the memory array during the seeding phase of the program operation and causes a first positive voltage to be applied to a first plurality of word lines of the data block during the seeding phase, wherein each of the first plurality of word lines is coupled to a corresponding memory cell of a first plurality of memory cells in the string of memory cells, the first plurality of word lines comprising a selected word line associated with the program operation.
    Type: Application
    Filed: December 19, 2023
    Publication date: April 11, 2024
    Inventors: Vinh Q. Diep, Ching-Huang Lu, Yingda Dong
  • Patent number: 11947831
    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 read operation on a segment of the memory device; determining a program erase cycle count associated with the segment of the memory device; determining a temperature offset value for the segment of the memory device based on a write temperature and a read temperature, determining whether the temperature offset value satisfies a threshold criterion associated with the program erase cycle count of the segment; and responsive to determining that the temperature offset value satisfies the threshold criterion, performing a corrective read operation on the segment of the memory device, wherein a sense time parameter of the corrective read operation is modified according to the temperature offset value and the program erase cycle count.
    Type: Grant
    Filed: June 2, 2022
    Date of Patent: April 2, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Zhenming Zhou, Murong Lang, Ching-Huang Lu, Nagendra Prasad Ganesh Rao
  • Publication number: 20240096408
    Abstract: Control logic in a memory device receives a request to perform a read operation to read data from a memory array of a memory device, the request comprising an indication of a segment of the memory array where the data is stored, and performs a first coarse valley tracking calibration operation on the segment of the memory array. The control logic further configures a read voltage level and one or more parameters associated with the read operation based on a result of the first coarse valley tracking calibration operation and performs a second fine valley tracking calibration operation on the segment of the memory array using the configured read voltage level and the configured one or more parameters.
    Type: Application
    Filed: September 21, 2023
    Publication date: March 21, 2024
    Inventors: Ching-Huang Lu, Yingda Dong
  • Publication number: 20240071515
    Abstract: Control logic of a memory device to initiate an erase operation including a set of erase loops to erase one or more memory cells of the memory device. During a first erase loop of the set of erase loops, a first erase pulse having an erase voltage level is caused to be applied to a source line associated with the one or more memory cells. During the first erase loop, a first erase bias voltage having an initial voltage level is caused to be applied to a first select gate and a second erase bias voltage having the initial voltage level is caused to be applied to a second select gate associated with the source line, where the first erase bias voltage level is based on a first delta voltage level. During a subset of erase loops following the first erase loop, a second erase pulse having the erase voltage level is caused to be applied to the source line.
    Type: Application
    Filed: August 17, 2023
    Publication date: February 29, 2024
    Inventors: Ching-Huang Lu, Vinh Quang Diep, Avinash Rajagiri, Yingda Dong
  • Publication number: 20240071530
    Abstract: A program operation is initiated to program a set of target memory cells of a target wordline of a memory device to a target programming level. During a program verify operation of the program operation, a program verify voltage level is caused to be applied to the target wordline to verify programming of the set of target memory cells. A pass through read voltage level associated with the target wordline is identified. During the program verify operation, a pass through voltage level is caused to be applied to at least one of a first wordline or a second wordline, wherein the pass through read voltage level is the read voltage level reduced by an offset value.
    Type: Application
    Filed: August 14, 2023
    Publication date: February 29, 2024
    Inventors: Ching-Huang Lu, Hong-Yan Chen, Yingda Dong
  • Publication number: 20240061608
    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 a temperature associated with the memory device satisfies a threshold criterion; determining a memory access operation type of the memory access operation; and performing the memory access operation on the set of cells associated with the wordline using a first time sense parameter, wherein the first time sense parameter corresponds to the memory access operation type and the temperature associated with the memory device.
    Type: Application
    Filed: August 17, 2022
    Publication date: February 22, 2024
    Inventors: Zhenming Zhou, Ching-Huang Lu, Murong Lang
  • 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: 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: 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: 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
  • Patent number: 11901010
    Abstract: Control logic in a memory device initiates a program operation on a memory array, the program operation comprising a seeding phase. During the seeding phase, the control logic causes a seeding voltage to be applied to a string of memory cells in a data block of the memory array during the seeding phase of the program operation and causes a first positive voltage to be applied to a first plurality of word lines of the data block during the seeding phase, wherein each of the first plurality of word lines is coupled to a corresponding memory cell of a first plurality of memory cells in the string of memory cells, the first plurality of word lines comprising a selected word line associated with the program operation.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: February 13, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Vinh Q. Diep, Ching-Huang Lu, Yingda Dong
  • 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: 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
  • Patent number: 11894069
    Abstract: A memory device includes unselected sub-block, which includes bit line; drain select (SGD) transistor coupled with bit line; a source voltage line; source select (SGS) transistor coupled with source voltage; and wordlines coupled with gates of string of cells, which have channel coupled between the SGS/SGD transistors. Control logic coupled with unselected sub-block is to: cause the SGD/SGS transistors to turn on while ramping the wordlines from a ground voltage to a pass voltage associated with unselected wordlines in preparation for read operation; cause, while ramping the wordlines, the channel to be pre-charged by ramping voltages on the bit line and the source voltage line to a target voltage that is greater than a source read voltage level; and in response to wordlines reaching the pass voltage, causing the SGD and SGS transistors to be turned off, to leave the channel pre-charged to the target voltage during the read operation.
    Type: Grant
    Filed: February 2, 2022
    Date of Patent: February 6, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Xiangyu Yang, Hong-Yan Chen, Ching-Huang Lu
  • Publication number: 20240028253
    Abstract: A memory device can include a memory array coupled with a control logic. The control logic initiates a program operation on the memory array, the program operation including a program phase and a program recovery phase. The control logic causes a program voltage to be applied to a selected word line during the program phase. The control logic causes a select gate drain coupled with a string of memory cells to deactivate during the program recovery phase after applying the program voltage, where the string of memory cells include a plurality of memory cells each coupled to a corresponding word line of a plurality of wordlines. The control logic causes a voltage to be applied to a select gate source coupled with the string of memory cells to activate the select gate source during the program recovery phase concurrent to causing the select gate drain to deactivate.
    Type: Application
    Filed: July 20, 2023
    Publication date: January 25, 2024
    Inventors: Avinash Rajagiri, Ching-Huang Lu, Aman Gupta, Shuji Tanaka, Masashi Yoshida, Shinji Sato, Yingda Dong
  • Publication number: 20230418475
    Abstract: Various embodiments provide for performing a memory operation, such as a memory block compaction operation or block folding or refresh operation, based on a temperature associated with a memory block of a memory device. For instance, some embodiments provide for techniques that can cause performance of a block compaction operation on a memory block at a temperature that is at least at or higher than a predetermined temperature value. Additionally, some embodiments provide for techniques that can cause performance of a block folding/refresh operation, at a temperature that is at or higher than the predetermined temperature value, on one or more blocks on which data was written at a temperature lower than the predetermined temperature value.
    Type: Application
    Filed: June 23, 2022
    Publication date: December 28, 2023
    Inventors: Pitamber Shukla, Ching-Huang Lu, Devin Batutis
  • Publication number: 20230418742
    Abstract: A memory device includes a memory array comprising memory cells associated with a plurality of wordlines control logic that is to perform operations including: causing memory cells of a physical unit of the memory array to be programmed starting at a second wordline, which is adjacent to a first wordline of the memory array, and proceeding sequentially through a plurality of sequentially-ordered wordlines of the physical unit, wherein the first wordline is associated with memory cells that are adjacent to one or more select gate (SG) transistors of the memory array, and the sequentially-ordered wordlines are numbered according to a distance away from the one or more SG transistors; and at least one of after the memory cells associated with the second wordline are programmed or after completion of programming the physical unit, causing the memory cells associated with the first wordline to be programmed.
    Type: Application
    Filed: May 30, 2023
    Publication date: December 28, 2023
    Inventors: Deping He, Ching-Huang Lu
  • Publication number: 20230402103
    Abstract: A memory device includes a memory array comprising memory cells and control logic. The control logic performs operations including: causing a first erase pulse to be applied to a memory line of the memory array to perform an erase operation, the memory line being a conductive line coupled to a string of the memory cells; suspending the erase operation in response to receipt of a suspend command during a ramping period of the first erase pulse; recording a suspend voltage level of the first erase pulse when suspended; causing the erase operation to be resumed in response to an erase resume command; selectively modifying a pulse width of a flattop period of a second erase pulse based on the suspend voltage level; and causing the second erase pulse to be applied to the memory line during a resume of the erase operation.
    Type: Application
    Filed: August 15, 2022
    Publication date: December 14, 2023
    Inventors: Jiun-horng Lai, Pitamber Shukla, Ching-Huang Lu, Chengkuan Yin, Yoshiaki Fukuzumi
  • Publication number: 20230393776
    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 read operation on a segment of the memory device; determining a program erase cycle count associated with the segment of the memory device; determining a temperature offset value for the segment of the memory device based on a write temperature and a read temperature, determining whether the temperature offset value satisfies a threshold criterion associated with the program erase cycle count of the segment; and responsive to determining that the temperature offset value satisfies the threshold criterion, performing a corrective read operation on the segment of the memory device, wherein a sense time parameter of the corrective read operation is modified according to the temperature offset value and the program erase cycle count.
    Type: Application
    Filed: June 2, 2022
    Publication date: December 7, 2023
    Inventors: Zhenming Zhou, Murong Lang, Ching-Huang Lu, Nagendra Prasad Ganesh Rao