Patents by Inventor Hongtao Liu

Hongtao Liu 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: 11250910
    Abstract: A control method of a programming process for a three-dimensional (3D) NAND flash memory array comprises programming a bit-cell of the 3D NAND flash memory array in a programming stage; and verifying whether the bit-cell of the 3D NAND flash memory array is programmed in a verification stage after the programming stage; wherein the programming stage comprises programming the bit-cell of the 3D NAND flash memory array with a plurality of programming voltage pulses; wherein the verification stage comprises reading the bit-cell of the 3D NAND flash memory array with lower or higher voltage than normal reading voltage pulse.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: February 15, 2022
    Assignee: Yangtze Memory Technologies Co., Ltd.
    Inventors: Ying Huang, Hongtao Liu, Qiguang Wang, Wenzhe Wei
  • Publication number: 20220044726
    Abstract: An operating method and a non-volatile memory device are provided. The non-volatile memory device includes a memory array including a plurality of memory cells. The operating method includes applying a first program voltage signal to selected word lines connected to selected memory cells during a first program period and measuring a first threshold voltage, applying a second program voltage signal to the selected word lines during a second program period and measuring a second threshold voltage, applying a test bit line voltage signal to selected bit lines and applying a third program voltage signal to the selected word lines during a third program period and measuring a third threshold voltage and determining the enhanced bit line voltage by comparing a difference between the third threshold voltage and the second threshold voltage with a difference between the second threshold voltage and the first threshold voltage.
    Type: Application
    Filed: October 19, 2020
    Publication date: February 10, 2022
    Inventors: Ying Huang, Hongtao Liu, Feng Xu, Wenzhe Wei
  • Publication number: 20220013177
    Abstract: A memory device includes a memory string and a control circuit coupled to the memory string. The memory string includes a top select gate, word lines, a bottom select gate, and a P-well. The control circuit is configured to, in an erasing operation, apply an erasing voltage to the P-well, apply a verifying voltage to a selected word line of the word lines after applying the erasing voltage to the P-well, and apply a first turn-on voltage to the bottom select gate, starting after applying the erasing voltage to the P-well and before applying the verifying voltage to the selected word line.
    Type: Application
    Filed: September 24, 2021
    Publication date: January 13, 2022
    Inventors: Kaiwei Li, Jianquan Jia, Hongtao Liu, An Zhang
  • Patent number: 11204603
    Abstract: A terminal insertion quality monitoring system includes an acceleration sensor disposed on a gripper of a terminal insertion equipment and configured to detect a dynamic acceleration of the gripper while using the gripper to insert a terminal into a housing, a control parameter acquisition device configured to acquire a plurality of control parameters of the terminal insertion equipment while inserting the terminal into the housing, and an artificial intelligence system adapted to classify the detected dynamic acceleration and the acquired control parameters into a plurality of different insertion modes by analyzing and calculating the detected dynamic acceleration and the acquired control parameters. The different insertion modes have a plurality of different grades of terminal insertion quality.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: December 21, 2021
    Assignees: TE Connectivity Corporation, Tyco Electronics (Shanghai) Co. Ltd.
    Inventors: Hongtao Liu, Dandan Zhang, Roberto Francisco-Yi Lu, Zongjie Tao, Changjun Wang, Lei Zhou, Lvhai Hu
  • Patent number: 11205346
    Abstract: A traffic information update method includes recognizing, by a terminal, a first traffic sign from a road image; detecting whether traffic information of the terminal includes first alert information corresponding to the first traffic sign; if the traffic information of the terminal does not include the first alert information, generating a traffic sign adding instruction corresponding to the first traffic sign; and sending the traffic sign adding instruction to a server. After finding a new traffic sign, the terminal may report a content indication and a location indication of the traffic sign to the server such that the server can directly update traffic information according to the information reported by the terminal.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: December 21, 2021
    Assignee: HONOR DEVICE CO., LTD.
    Inventor: Hongtao Liu
  • Publication number: 20210366545
    Abstract: An operation method for a 3D NAND flash includes writing data into a WLn layer of the plurality of wordline layers of an unselect bit line of the plurality of bit lines in a write operation; and applying a first pass voltage on at least a first WL layer of the plurality of wordline layers of the unselect bit line of the plurality of bit lines and applying a second pass voltage on at least a second WL layer of the plurality of wordline layers of the unselect bit line of the plurality of bit lines; wherein the operation method is operated when a pre-pulse phase is removed from a verify phase.
    Type: Application
    Filed: March 11, 2021
    Publication date: November 25, 2021
    Inventors: Hongtao Liu, Song Min Jiang, Dejia Huang, Ying Huang, Wenzhe Wei
  • Patent number: 11175236
    Abstract: An image acquisition system includes a feeding unit supplying a product, a product pickup platform onto which the product is supplied by the feeding unit, and a camera capturing an image of the product on the product pickup platform. The camera identifies a position and an angle of the product based on the image. The image acquisition system includes a robot gripping the product from the product pickup platform based on the position and the angle identified by the camera and an image acquisition platform onto which the product is placed by the robot. An imaging microscope of the image acquisition system captures an image of a surface of the product facing upwards on the image acquisition platform and a computer stores the image of the surface of the product captured by the imaging microscope.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: November 16, 2021
    Assignees: Tyco Electronics (Shanghai) Co. Ltd., TE Connectivity Corporation
    Inventors: Hongtao Liu, Dandan Zhang, Roberto Francisco-Yi Lu, Changjun Wang, Lei Zhou, Zongjie Tao
  • Patent number: 11177001
    Abstract: A programming method of an increment step pulse program (ISPP) for a three-dimension (3D) NAND flash includes programming a select wordline of an unselect bit line of the 3D NAND flash; performing a first verification process with at least a verification voltage on the select wordline; determining whether a first verification voltage of the first verification process for the select wordline is higher than a default voltage or not; and removing a pre-pulse phase of the ISPP when the first verification voltage is higher than the default voltage; wherein the first verification voltage is a following verification voltage of the first verification process.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: November 16, 2021
    Assignee: Yangtze Memory Technologies Co., Ltd.
    Inventors: Hongtao Liu, Dejia Huang, Wenzhe Wei, Ying Huang
  • Publication number: 20210350853
    Abstract: A control method of a programming process for a three-dimensional (3D) NAND flash memory array comprises programming a bit-cell of the 3D NAND flash memory array in a programming stage; and verifying whether the bit-cell of the 3D NAND flash memory array is programmed in a verification stage after the programming stage; wherein the programming stage comprises programming the bit-cell of the 3D NAND flash memory array with a plurality of programming voltage pulses; wherein the verification stage comprises reading the bit-cell of the 3D NAND flash memory array with lower or higher voltage than normal reading voltage pulse.
    Type: Application
    Filed: June 2, 2020
    Publication date: November 11, 2021
    Inventors: Ying Huang, Hongtao Liu, Qiguang Wang, Wenzhe Wei
  • Publication number: 20210343344
    Abstract: A programming method for a memory device is disclosed. The programming method comprises moving a plurality of first charge carriers at a shallow energy level to a channel in a substrate layer before a fine programming operation for a first word line, wherein the plurality of first charge carriers at the shallow energy level correspond to a memory cell to be programmed.
    Type: Application
    Filed: June 1, 2020
    Publication date: November 4, 2021
    Inventors: Hongtao Liu, Ying Huang, Wenzhe Wei, Song Min Jiang, Dejia Huang, Wen Qiang Chen
  • Publication number: 20210335426
    Abstract: A memory device includes a plurality of memory blocks, and a control circuit. A selected memory block of the plurality of memory blocks comprises a top select gate, a bottom select gate, a plurality of word lines, a common-source line, and a P-well. The control circuit performs an erasing and verification method, wherein the erasing and verification method includes erasing the selected memory block during an erasing stage; and maintaining the bottom select gate to be turned on during a maintaining period before the top select gate are turned on during a verification stage.
    Type: Application
    Filed: June 18, 2020
    Publication date: October 28, 2021
    Inventors: Kaiwei Li, Jianquan Jia, Hongtao Liu, An Zhang
  • Patent number: 11158380
    Abstract: A memory device includes a plurality of memory blocks, and a control circuit. A selected memory block of the plurality of memory blocks comprises a top select gate, a bottom select gate, a plurality of word lines, a common-source line, and a P-well. The control circuit performs an erasing and verification method, wherein the erasing and verification method includes erasing the selected memory block during an erasing stage; and maintaining the bottom select gate to be turned on during a maintaining period before the top select gate are turned on during a verification stage.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: October 26, 2021
    Assignee: Yangtze Memory Technologies Co., Ltd.
    Inventors: Kaiwei Li, Jianquan Jia, Hongtao Liu, An Zhang
  • Publication number: 20210327511
    Abstract: A programming method of an increment step pulse program (ISPP) for a three-dimension (3D) NAND flash includes programming a select wordline of an unselect bit line of the 3D NAND flash; performing a first verification process with at least a verification voltage on the select wordline; determining whether a first verification voltage of the first verification process for the select wordline is higher than a default voltage or not; and removing a pre-pulse phase of the ISPP when the first verification voltage is higher than the default voltage; wherein the first verification voltage is a following verification voltage of the first verification process.
    Type: Application
    Filed: June 1, 2020
    Publication date: October 21, 2021
    Inventors: Hongtao Liu, Dejia Huang, Wenzhe Wei, Ying Huang
  • Publication number: 20210264981
    Abstract: A vertical NAND string in a channel-stacked 3D memory device may be programmed using ISPP scheme, wherein a preparation step is introduced immediately after each verification step and before the start of a corresponding verification step. During the preparation step, the electrons accumulated in the channel may be drained by the selected bit line for enhancing the coupling effect of the channel, thereby reducing program disturb and increasing program speed.
    Type: Application
    Filed: March 31, 2020
    Publication date: August 26, 2021
    Inventors: Hongtao Liu, Lei Jin, Shan Li, Yali Song
  • Patent number: 11067383
    Abstract: A concentricity measurement platform includes a vision system capturing an image of an annular member to be measured and a computer system communicatively coupled to the vision system. The computer system calculates a concentricity of the annular member based on the image captured by the vision system.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: July 20, 2021
    Assignees: Tyco Electronics (Shanghai) Co. Ltd., TE Connectivity Corporation
    Inventors: Hongtao Liu, Dandan Zhang, Roberto Francisco-Yi Lu, Lei Zhou
  • Publication number: 20210183449
    Abstract: In a memory device which includes a plurality of memory cells, a top dummy storage region, a bottom dummy storage region, a plurality of word lines and a plurality of bit lines form in a substrate, a selected bit line among the plurality of bit lines, a channel region in the substrate and a source region in the substrate are pre-charged and a negative pre-pulse voltage is applied to the bottom dummy storage region during a first period. A selected memory cell among the plurality of memory cells is programmed during a second period subsequent to the first period, wherein the selected memory cell is coupled to the selected bit line and a selected word line among the plurality of word lines.
    Type: Application
    Filed: February 26, 2021
    Publication date: June 17, 2021
    Inventors: Wenzhe Wei, Hongtao Liu, Kaikai You, Da Li, Ying Huang, Yali Song, Dejia Huang
  • Publication number: 20210174885
    Abstract: A memory device includes a memory array including memory strings. Each memory string includes a plurality of top memory cells, a plurality of bottom memory cells, and one or more dummy memory cells between the top memory cells and the bottom memory cells. The memory device also includes a plurality of word lines respectively coupled to gate terminals of the top memory cells and the bottom memory cells. The memory device further includes a control circuit configured to provide a control signal to control programming a target memory cell of the top memory cells. The gate terminal of the target memory cell are coupled to a selected word line of the word lines.
    Type: Application
    Filed: February 19, 2021
    Publication date: June 10, 2021
    Inventors: Xinlei Jia, Shan Li, Yali Song, Lei Jin, Hongtao Liu, Jianquan Jia, XiangNan Zhao, Yuan-Yuan Min
  • Publication number: 20210158880
    Abstract: When programming and verifying a memory device which includes a plurality of memory cells and a plurality of word lines, a first coarse programming is first performed on a first memory cell among the plurality of memory cells which is controlled by a first word line among the plurality of word lines, and then a second coarse programming is performed on a second memory cell among the plurality of memory cells which is controlled by a second word line among the plurality of word lines. Next, a first coarse verify current is used for determining whether the first memory cell passes a coarse verification and a second coarse verify current is used for determining whether the second memory cell passes a second coarse verification, wherein the second coarse verify current is smaller than the first coarse verify current.
    Type: Application
    Filed: February 1, 2021
    Publication date: May 27, 2021
    Inventors: XiangNan Zhao, Yali Song, An Zhang, Hongtao Liu, Lei Jin
  • Patent number: 10998049
    Abstract: In a memory device which includes a plurality of memory cells, a top dummy storage region, a bottom dummy storage region, a plurality of word lines and a plurality of bit lines form in a substrate, a selected bit line among the plurality of bit lines, a channel region in the substrate and a source region in the substrate are pre-charged and a negative pre-pulse voltage is applied to the bottom dummy storage region during a first period. A selected memory cell among the plurality of memory cells is programmed during a second period subsequent to the first period, wherein the selected memory cell is coupled to the selected bit line and a selected word line among the plurality of word lines.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: May 4, 2021
    Assignee: Yangtze Memory Technologies Co., Ltd.
    Inventors: Wenzhe Wei, Hongtao Liu, Kaikai You, Da Li, Ying Huang, Yali Song, Dejia Huang
  • Publication number: 20210125672
    Abstract: In a memory device which includes a plurality of memory cells, a top dummy storage region, a bottom dummy storage region, a plurality of word lines and a plurality of bit lines form in a substrate, a selected bit line among the plurality of bit lines, a channel region in the substrate and a source region in the substrate are pre-charged and a negative pre-pulse voltage is applied to the bottom dummy storage region during a first period. A selected memory cell among the plurality of memory cells is programmed during a second period subsequent to the first period, wherein the selected memory cell is coupled to the selected bit line and a selected word line among the plurality of word lines.
    Type: Application
    Filed: December 5, 2019
    Publication date: April 29, 2021
    Inventors: Wenzhe Wei, Hongtao Liu, Kaikai You, Da Li, Ying Huang, Yali Song, Dejia Huang