3D memory with staged-level multibit programming

    公开(公告)号:US10381094B2

    公开(公告)日:2019-08-13

    申请号:US15290376

    申请日:2016-10-11

    Abstract: A two-sided, staged programming operation is applied to a memory having first and second stacks of memory cells C1(i) and C2(i), i being the physical level of a cell. The staged programming operation includes applying a preliminary program stage S1, an intermediate program stage S2, and a final program stage S3 to memory cells in the first and second stacks. In a programming order the final program stage S3 is applied to memory cells in the first and second stacks at each level (i) for which the intermediate program stage S2 has already been applied to the memory cells in any neighboring levels (levels i+1 and i−1). The intermediate program stage S2 is applied only to memory cells for which the preliminary program stage S1 has already been applied to the cells in any neighboring levels (levels i+1 and i−1).

    THREE DIMENSIONAL MEMORY DEVICE AND DATA ERASE METHOD THEREOF
    2.
    发明申请
    THREE DIMENSIONAL MEMORY DEVICE AND DATA ERASE METHOD THEREOF 有权
    三维存储器件及其数据擦除方法

    公开(公告)号:US20160012901A1

    公开(公告)日:2016-01-14

    申请号:US14330106

    申请日:2014-07-14

    Abstract: A data erase method of a three dimensional (3D) memory device comprising the following steps. First, in a first phase of an erase operation, a first voltage is applied to a first semiconductor channel of the semiconductor channels to erase data stored in the memory cells defined on the first semiconductor channel and a second voltage is applied to a second semiconductor channel of the semiconductor channels, wherein the second semiconductor channel is adjacent to the first semiconductor channel. Then, in a second phase of the erase operation, the second voltage is applied to the first semiconductor channel and the first voltage is applied to the second semiconductor channel.

    Abstract translation: 一种三维(3D)存储器件的数据擦除方法,包括以下步骤。 首先,在擦除操作的第一阶段中,将第一电压施加到半导体通道的第一半导体通道,以擦除存储在第一半导体通道上限定的存储单元中的数据,并将第二电压施加到第二半导体通道 的半导体通道,其中第二半导体沟道与第一半导体沟道相邻。 然后,在擦除操作的第二阶段中,将第二电压施加到第一半导体沟道,并将第一电压施加到第二半导体沟道。

    MEMORY DEVICE
    7.
    发明公开
    MEMORY DEVICE 审中-公开

    公开(公告)号:US20240170076A1

    公开(公告)日:2024-05-23

    申请号:US17988773

    申请日:2022-11-17

    CPC classification number: G11C16/3459 G11C7/1039 G11C16/08 G11C16/24

    Abstract: A memory device, such as a 3D AND flash memory, includes a memory cell block, a word line driver, and a plurality of bit line switches. The word line driver has a plurality of complementary transistor pairs for respectively generating a plurality of word line signals for a plurality of word lines. Substrates of a first transistor and a second transistor of each of the complementary transistor pairs respectively receive a first voltage and a second voltage. Each of the bit line switches includes a third transistor. A substrate of the third transistor receives a third voltage. The first voltage, the second voltage, and the third voltage are constant static voltages during a soft program operation and a soft program verify operation.

    In-memory computation device
    8.
    发明授权

    公开(公告)号:US11221827B1

    公开(公告)日:2022-01-11

    申请号:US17006493

    申请日:2020-08-28

    Abstract: An in-memory computation device including a memory array, p×q analog to digital converters (ADCs) and a ladder adder is provided. The memory array is divided into p×q memory tiles, where p and q are positive integers larger than 1. Each of the memory tiles has a plurality local bit lines coupled to a global bit line respectively through a plurality of bit line selection switches. The bit line selection switches are turned on or cur off according to a plurality of control signals. The memory array receives a plurality of input signals. The ADCs are respectively coupled to a plurality of global bit lines of the memory tiles. The ADCs respectively convert electrical signals on the global bit lines to generate a plurality of sub-output signals. The ladder adder is coupled to the ADCs, and performs an addition operation on the sub-output signals to generate a calculation result.

    Memory device for increasing speed of soft-program operation

    公开(公告)号:US12198770B2

    公开(公告)日:2025-01-14

    申请号:US17988773

    申请日:2022-11-17

    Abstract: A memory device, such as a 3D AND flash memory, includes a memory cell block, a word line driver, and a plurality of bit line switches. The word line driver has a plurality of complementary transistor pairs for respectively generating a plurality of word line signals for a plurality of word lines. Substrates of a first transistor and a second transistor of each of the complementary transistor pairs respectively receive a first voltage and a second voltage. Each of the bit line switches includes a third transistor. A substrate of the third transistor receives a third voltage. The first voltage, the second voltage, and the third voltage are constant static voltages during a soft program operation and a soft program verify operation.

    Method for performing operation in memory device

    公开(公告)号:US11430527B1

    公开(公告)日:2022-08-30

    申请号:US17233590

    申请日:2021-04-19

    Abstract: A method for performing an operation in a memory device is provided. The method includes the following steps. An erasing operation is performed on one selected word line of the memory device to ensure that a plurality of first cells to be programed and a plurality of second cells to be erased connected to the selected word line have threshold voltages lower than a first predetermined level. A programming operation is performed on the selected word line, such that the first cells are suffered a first program bias and the second cells are suffered a second program bias which is lower than the first program bias.

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