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).
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Publication number: 20250239309Abstract: 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: ApplicationFiled: April 9, 2025Publication date: July 24, 2025Inventors: Ying HUANG, HongTao LIU, Yuanyuan MIN, Junbao WANG
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Publication number: 20250174282Abstract: 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: ApplicationFiled: March 15, 2024Publication date: May 29, 2025Inventors: Wei Qi, Junbao Wang, Da Li, Yaoyao Tian, Ya Wang, Kaikai You
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Patent number: 12300323Abstract: 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: GrantFiled: September 30, 2022Date of Patent: May 13, 2025Assignee: Yangtze Memory Technologies Co., Ltd.Inventors: Ying Huang, Hongtao Liu, Yuanyuan Min, Junbao Wang
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Publication number: 20250095744Abstract: 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: ApplicationFiled: January 10, 2024Publication date: March 20, 2025Inventors: Jiameng CUI, Jianquan JIA, Kaikai YOU, Junbao WANG, Wenhao XIONG, Wei QI, An ZHANG
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Patent number: 12254930Abstract: 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: GrantFiled: December 15, 2022Date of Patent: March 18, 2025Assignee: YANGTZE MEMORY TECHNOLOGIES CO., LTD.Inventors: Junbao Wang, Jianquan Jia
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Publication number: 20250068558Abstract: 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: ApplicationFiled: December 4, 2023Publication date: February 27, 2025Inventors: Jianquan JIA, XiangNan ZHAO, Yuanyuan MIN, Ying CUI, Kaikai YOU, Chenhui LI, Wei QI, Jiameng CUI, Lei GUAN, Junbao WANG, Lei JIN
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Publication number: 20250069662Abstract: 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: ApplicationFiled: December 18, 2023Publication date: February 27, 2025Inventors: Jianquan JIA, XiangNan ZHAO, Feng XU, Yuanyuan MIN, Ying CUI, Chenhui LI, Wei QI, Junbao WANG, Lei JIN
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Publication number: 20250069673Abstract: 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: ApplicationFiled: December 15, 2023Publication date: February 27, 2025Inventors: Junbao Wang, Jianquan Jia, Yuanyuan Min, Xiangnan Zhao, Ying Cui, Kaikai You, Jiameng Cui, Lei Guan, Chenhui Li, An Zhang, Lei Jin
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Publication number: 20250029660Abstract: 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: ApplicationFiled: December 4, 2023Publication date: January 23, 2025Inventors: Jianquan JIA, Junbao WANG, Hongtao LIU, Lei JIN
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Publication number: 20240321364Abstract: 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: ApplicationFiled: July 18, 2023Publication date: September 26, 2024Inventors: Kaiwei Li, Jianquan Jia, Junbao Wang, An Zhang, Yali Song
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Publication number: 20240164097Abstract: 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: ApplicationFiled: December 29, 2022Publication date: May 16, 2024Applicant: Yangtze Memory Technologies Co., Ltd.Inventors: Jianquan JIA, Weiming CHEN, Weiwei CHU, Junbao WANG, Kaiwei LI, Wenhao XIONG, Lei JIN
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Publication number: 20240112738Abstract: Disclosed herein are memory device, method for program operations. 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: ApplicationFiled: September 30, 2022Publication date: April 4, 2024Applicant: Yangtze Memory Technologies Co., Ltd.Inventors: Ying HUANG, Hongtao LIU, Yuanyuan MIN, Junbao WANG
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Publication number: 20230282281Abstract: 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: ApplicationFiled: March 10, 2023Publication date: September 7, 2023Inventor: Junbao WANG
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Publication number: 20230121846Abstract: 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: ApplicationFiled: December 15, 2022Publication date: April 20, 2023Inventors: Junbao Wang, Jianquan Jia