Patents by Inventor Junbao Wang

Junbao Wang 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: 12633348
    Abstract: A programming method includes applying a program voltage to a first word line coupled to a plurality of memory cells of a first memory cell slice and a plurality of memory cells of a second memory cell slice; and during a stage of applying the program voltage to the first word line, applying a turn-on voltage to a first select line and a second select line sequentially, wherein the first select line is coupled to a select transistor of the first memory cell slice, and the second select line is coupled to a select transistor of the second memory cell slice.
    Type: Grant
    Filed: December 4, 2023
    Date of Patent: May 19, 2026
    Assignee: Yangtze Memory Technologies Co., Ltd.
    Inventors: Jianquan Jia, Junbao Wang, Hongtao Liu, Lei Jin
  • Patent number: 12633345
    Abstract: A three-dimensional memory device includes memory arrays stacking in a first direction. Each of the memory arrays includes a stack structure including interleaved conductive layers and first dielectric layers extending in a second direction perpendicular to the first direction and a third direction perpendicular to the first direction and the second direction. The conductive layers include word lines and a drain select gate line, and the drain select gate line is separated by a second dielectric layer in the second direction.
    Type: Grant
    Filed: March 10, 2023
    Date of Patent: May 19, 2026
    Assignee: YANGTZE MEMORY TECHNOLOGIES CO., LTD.
    Inventor: Junbao Wang
  • Publication number: 20260134929
    Abstract: According to one aspect, a method of operating a memory is provided. The method may include applying a first power supply voltage to a common source during a program precharge process. The method may include applying a first voltage to a first bottom gate line and applying a second voltage to a second bottom gate line starting at a first moment of the program precharge process. The method may include applying a second power supply voltage to the first bottom gate line and applying a third voltage to the second bottom gate line after the first moment of the program precharge process.
    Type: Application
    Filed: January 9, 2026
    Publication date: May 14, 2026
    Inventors: Junbao Wang, Jianquan Jia, Yuanyuan Min, Xiangnan Zhao, Ying Cui, Kaikai You, Jiameng Cui, Lei Guan, Chenhui Li, An Zhang, Lei Jin
  • Publication number: 20260094647
    Abstract: In certain aspects, a memory device includes memory strings each including a first drain select gate (DSG) transistor, an insulating structure disposed between two adjacent sets of the memory strings and electrically separating the first DSG transistors of the two adjacent sets of the memory strings, first DSG line, each coupled to the first DSG transistors in a respective set of the two adjacent sets of the memory strings, and a peripheral circuit coupled to the memory strings through the first DSG lines and configured to, in an operation, apply a negative voltage to an unselect first DSG line of the first DSG lines, wherein the unselect first DSG line is coupled to the first DSG transistors in an unselect set of the two adjacent sets of the memory strings.
    Type: Application
    Filed: October 8, 2024
    Publication date: April 2, 2026
    Inventors: Kaiwei Li, Kaikai You, Junbao Wang, Jianquan Jia, Wenhao Xiong, Xiangnan Zhao, Songmin Jiang
  • Publication number: 20260088091
    Abstract: A memory device includes a memory cell array including a source layer, a bottom select gate layer, and a gate layer, and the bottom select gate layer is located between the source layer and the gate layer, wherein the bottom select gate layer includes a plurality of bottom select gates, and a bottom select gate of a first memory string and a bottom select gate of a second memory string are connected with a same select line; and a peripheral circuit coupled to the memory cell array, wherein the peripheral circuit is configured to apply a selection voltage to the select line to control the first memory string and the second memory string.
    Type: Application
    Filed: December 3, 2025
    Publication date: March 26, 2026
    Inventors: Jianquan JIA, XiangNan ZHAO, Feng XU, Yuanyuan MIN, Ying CUI, Chenhui LI, Wei QI, Junbao WANG, Lei JIN
  • Patent number: 12537067
    Abstract: According to one aspect, a method of operating a memory is provided. The method may include applying a first power supply voltage to a common source during a program precharge process. The method may include applying a first voltage to a first bottom gate line and applying a second voltage to a second bottom gate line starting at a first moment of the program precharge process. The method may include applying a second power supply voltage to the first bottom gate line and applying a third voltage to the second bottom gate line after the first moment of the program precharge process.
    Type: Grant
    Filed: December 15, 2023
    Date of Patent: January 27, 2026
    Assignee: YANGTZE MEMORY TECHNOLOGIES CO., LTD.
    Inventors: Junbao Wang, Jianquan Jia, Yuanyuan Min, Xiangnan Zhao, Ying Cui, Kaikai You, Jiameng Cui, Lei Guan, Chenhui Li, An Zhang, Lei Jin
  • Patent number: 12499949
    Abstract: The present disclosure provides a memory device, a memory system, and an operation method of a memory device, and relates to the technical field of semiconductor chips. The memory device includes a memory cell array including a source layer, a bottom select gate layer, and a gate layer, and the bottom select gate layer is located between the source layer and the gate layer, wherein the bottom select gate layer includes a plurality of bottom select gates, and a bottom select gate of a first memory string and a bottom select gate of a second memory string are connected with a same select line; and a peripheral circuit coupled to the memory cell array, wherein the peripheral circuit is configured to apply a selection voltage to the select line to control the first memory string and the second memory string.
    Type: Grant
    Filed: December 18, 2023
    Date of Patent: December 16, 2025
    Assignee: Yangtze Memory Technologies Co., Ltd.
    Inventors: Jianquan Jia, XiangNan Zhao, Feng Xu, Yuanyuan Min, Ying Cui, Chenhui Li, Wei Qi, Junbao Wang, Lei Jin
  • Publication number: 20250245176
    Abstract: A memory, an operation method thereof, and a memory system are provided. The memory includes: a memory cell array including memory strings each including memory cells and top select transistors; top select gate lines coupled to top select transistors; word lines coupled to memory cells; and a peripheral circuit coupled to top select gate lines and word lines and configured to: apply a first pulse to a first word line of word lines, such that a voltage of the first word line reaches a first target voltage at a first time instant; apply a second pulse to a first top select gate line of top select gate lines adjacent to the first word line, such that a voltage of the first top select gate line reaches a second target voltage at a second time instant that is later than the first time instant.
    Type: Application
    Filed: May 31, 2024
    Publication date: July 31, 2025
    Inventors: Jiameng CUI, Kaikai YOU, Jianquan JIA, Junbao WANG, Wenhao XIONG
  • Publication number: 20250239309
    Abstract: In an aspect, a memory device comprises a memory configured to store a program code and a processor. The processor is configured to perform a first coarse programming to a first cell of the memory device by incremental step pulse programming (ISPP) with a first step voltage. The processor is further configured to perform a second coarse programming to a second cell of the memory device by ISPP with a second step voltage. The first step voltage is larger than the second step voltage. The first cell corresponds to a first target voltage and the second cell corresponds to a second target voltage.
    Type: Application
    Filed: April 9, 2025
    Publication date: July 24, 2025
    Inventors: Ying HUANG, HongTao LIU, Yuanyuan MIN, Junbao WANG
  • Publication number: 20250191661
    Abstract: The embodiments of the disclosure provide a control method and apparatus for a memory, and a storage medium. The memory has memory blocks, and each memory block has memory strings. Each of the memory strings includes a channel layer with an N-type doped top region. In a memory block, a bit line erasing voltage is applied to a select bit line, and an erasing prohibition voltage is applied to an unselect bit line. A top select gate voltage lower than the bit line erasing voltage is applied to a top select gate. When a word line erasing voltage lower than the bit line erasing voltage is applied to the corresponding word line connected to a memory string corresponding to the select bit line and the unselect bit line, the memory string corresponding to the select bit line is erased.
    Type: Application
    Filed: February 17, 2025
    Publication date: June 12, 2025
    Inventors: Junbao Wang, Jianquan Jia
  • Publication number: 20250174282
    Abstract: According to one aspect of the present disclosure, a method of operating a memory is provided. An example method may include, in a prepulse operation, applying a first voltage to unselected upper select line coupled with the upper select transistor of unselected memory string to turn off the upper select transistor, and applying a second voltage to unselected lower select line coupled with lower select transistor of the unselected memory string to turn on the lower select transistor. The method may include applying a pass voltage to unselected word line. The method may include applying a third voltage to the dummy word line coupled with the dummy memory cell in the at least one group of dummy memory cells to turn off the corresponding dummy memory cell. A stage of applying the pass voltage and a stage of applying the third voltage temporally overlap in part.
    Type: Application
    Filed: March 15, 2024
    Publication date: May 29, 2025
    Inventors: Wei Qi, Junbao Wang, Da Li, Yaoyao Tian, Ya Wang, Kaikai You
  • Patent number: 12300323
    Abstract: In an aspect, a memory device comprises a memory configured to store a program code and a processor. The processor is configured to perform a first programming to a first cell of the memory device by incremental step pulse programming (ISPP) with a first step voltage. The processor is further configured to perform a second programming to a second cell of the memory device by ISPP with a second step voltage. The first step voltage is larger than the second step voltage. The first cell corresponds to a first target voltage and the second cell corresponds to a second target voltage. The first cell corresponds to a first target voltage and the second cell corresponds to a second target voltage.
    Type: Grant
    Filed: September 30, 2022
    Date of Patent: May 13, 2025
    Assignee: Yangtze Memory Technologies Co., Ltd.
    Inventors: Ying Huang, Hongtao Liu, Yuanyuan Min, Junbao Wang
  • Publication number: 20250095744
    Abstract: A memory device includes a memory cell array having stacked first and second memory decks; and a peripheral circuit coupled to the memory cell array and configured to: when performing a program operation on a selected memory cell layer in the first memory deck, apply a voltage to a word line layer corresponding to the selected memory cell layer and apply a first voltage to a word line layer corresponding to an unselected memory cell layer in the first memory deck; apply a second voltage to the word line layer corresponding to the plurality of memory cell layers in the second memory deck; and apply a third voltage to the dummy word line layer corresponding to the at least one dummy memory cell layer at the junction position of the first memory deck and the second memory deck. The first voltage exceeds the second voltage, which exceeds the third voltage.
    Type: Application
    Filed: January 10, 2024
    Publication date: March 20, 2025
    Inventors: Jiameng CUI, Jianquan JIA, Kaikai YOU, Junbao WANG, Wenhao XIONG, Wei QI, An ZHANG
  • Patent number: 12254930
    Abstract: The embodiments of the disclosure provide a control method and apparatus for a memory, and a storage medium. The memory has memory blocks, and each memory block has memory strings. Each of the memory strings includes a channel layer with an N-type doped top region. In a memory block, a bit line erasing voltage is applied to a select bit line, and an erasing prohibition voltage is applied to an unselect bit line. A top select gate voltage lower than the bit line erasing voltage is applied to a top select gate. When a word line erasing voltage lower than the bit line erasing voltage is applied to the corresponding word line connected to a memory string corresponding to the select bit line and the unselect bit line, the memory string corresponding to the select bit line is erased.
    Type: Grant
    Filed: December 15, 2022
    Date of Patent: March 18, 2025
    Assignee: YANGTZE MEMORY TECHNOLOGIES CO., LTD.
    Inventors: Junbao Wang, Jianquan Jia
  • Publication number: 20250069673
    Abstract: According to one aspect, a method of operating a memory is provided. The method may include applying a first power supply voltage to a common source during a program precharge process. The method may include applying a first voltage to a first bottom gate line and applying a second voltage to a second bottom gate line starting at a first moment of the program precharge process. The method may include applying a second power supply voltage to the first bottom gate line and applying a third voltage to the second bottom gate line after the first moment of the program precharge process.
    Type: Application
    Filed: December 15, 2023
    Publication date: February 27, 2025
    Inventors: Junbao Wang, Jianquan Jia, Yuanyuan Min, Xiangnan Zhao, Ying Cui, Kaikai You, Jiameng Cui, Lei Guan, Chenhui Li, An Zhang, Lei Jin
  • Publication number: 20250068558
    Abstract: The present disclosure provides a method for operating a memory, a memory and a memory system, and relates to the technical field of semiconductor chip. The method includes: during the erase phase, applying an erase voltage to the word line, and applying an erase voltage to the select line coupled to a target select gate; during the program phase for select gate, applying a pass voltage to the word line, and applying a program voltage to the select line coupled to the target select gate.
    Type: Application
    Filed: December 4, 2023
    Publication date: February 27, 2025
    Inventors: Jianquan JIA, XiangNan ZHAO, Yuanyuan MIN, Ying CUI, Kaikai YOU, Chenhui LI, Wei QI, Jiameng CUI, Lei GUAN, Junbao WANG, Lei JIN
  • Publication number: 20250069662
    Abstract: The present disclosure provides a memory device, a memory system, and an operation method of a memory device, and relates to the technical field of semiconductor chips. The memory device includes a memory cell array including a source layer, a bottom select gate layer, and a gate layer, and the bottom select gate layer is located between the source layer and the gate layer, wherein the bottom select gate layer includes a plurality of bottom select gates, and a bottom select gate of a first memory string and a bottom select gate of a second memory string are connected with a same select line; and a peripheral circuit coupled to the memory cell array, wherein the peripheral circuit is configured to apply a selection voltage to the select line to control the first memory string and the second memory string.
    Type: Application
    Filed: December 18, 2023
    Publication date: February 27, 2025
    Inventors: Jianquan JIA, XiangNan ZHAO, Feng XU, Yuanyuan MIN, Ying CUI, Chenhui LI, Wei QI, Junbao WANG, Lei JIN
  • Publication number: 20250029660
    Abstract: The disclosure provides a programming method of a memory, a memory and a memory system, which relate to the technical field of semiconductor chips. The programming method comprises: applying a program voltage to a first word line coupled to a plurality of memory cells of a first memory cell slice and a plurality of memory cells of a second memory cell slice; and during a stage of applying the program voltage to the first word line, applying a turn-on voltage to a first select line and a second select line sequentially, wherein the first select line is coupled to a select transistor of the first memory cell slice, and the second select line is coupled to a select transistor of the second memory cell slice.
    Type: Application
    Filed: December 4, 2023
    Publication date: January 23, 2025
    Inventors: Jianquan JIA, Junbao WANG, Hongtao LIU, Lei JIN
  • Publication number: 20240321364
    Abstract: Implementations of the present disclosure disclose a memory operation method, a memory device, a memory system and an electronic apparatus. The memory device includes a memory stack structure, a select stack structure on the memory stack structure, a memory string including a first sub-string penetrating through the select stack structure, and a second sub-string penetrating through the memory stack structure, and including a first dummy memory cell adjacent to a plug, and a plurality of memory cells, a peripheral circuit connected with the memory string and configured to program the first dummy memory cell, and apply a first bias voltage to a first dummy word line coupled to the first dummy memory cell in a pre-charge stage of a program operation of one of the plurality of memory cells close to the plug.
    Type: Application
    Filed: July 18, 2023
    Publication date: September 26, 2024
    Inventors: Kaiwei Li, Jianquan Jia, Junbao Wang, An Zhang, Yali Song
  • Publication number: 20240164097
    Abstract: The disclosure provides a three-dimensional (3D) memory, a method of fabricating a 3D memory and a memory system. The 3D memory can include a stack including alternately stacked first dielectric layers and conductive layers, and a channel structure extending through the stack and including a second dielectric layer and a blocking layer disposed in this order from outside to inside. The second dielectric layer can have a dielectric constant greater than or equal to 3.9.
    Type: Application
    Filed: December 29, 2022
    Publication date: May 16, 2024
    Applicant: Yangtze Memory Technologies Co., Ltd.
    Inventors: Jianquan JIA, Weiming CHEN, Weiwei CHU, Junbao WANG, Kaiwei LI, Wenhao XIONG, Lei JIN