Memory device and memory system having multiple error correction functions, and operating method thereof

    公开(公告)号:US11301319B2

    公开(公告)日:2022-04-12

    申请号:US16575615

    申请日:2019-09-19

    Abstract: A memory system includes a memory cell array including a first memory area and a second memory area, an input/output circuit including input/output lines for transmitting or receiving data bits and parity bits to or from the first and second memory areas, and an error correction circuit including a plurality of sub error correction circuits including a first sub error correction circuit for performing a first error correction operation on first data bits of the first memory area received through the input/output lines, and a second sub error correction circuit for performing a second error correction operation on second data bits of the second memory area received through the input/output lines. The first memory area has a higher bit error rate than the second memory area.

    Memory device and method of manufacturing the same

    公开(公告)号:US11183538B2

    公开(公告)日:2021-11-23

    申请号:US16835667

    申请日:2020-03-31

    Abstract: A memory device includes a first electrode line layer including a plurality of first electrode lines extending on a substrate in a first direction and being spaced apart from each other, a second electrode line layer including a plurality of second electrode lines extending on the first electrode line layer in a second direction that is different from the first direction and being spaced apart from each other, and a memory cell layer including a plurality of first memory cells located at a plurality of intersections between the plurality of first electrode lines and the plurality of second electrode lines, each first memory cell including a selection device layer, an intermediate electrode and a variable resistance layer that are sequentially stacked. A side surface of the variable resistance layer is perpendicular to a top surface of the substrate or inclined to be gradually wider toward an upper portion of the variable resistance layer. The first memory cell has a side surface slope so as to have a width gradually decreasing toward its upper portion.

    Memory device and method of manufacturing the same

    公开(公告)号:US11201192B2

    公开(公告)日:2021-12-14

    申请号:US17030425

    申请日:2020-09-24

    Abstract: A memory device includes a first electrode line layer including a plurality of first electrode lines extending on a substrate in a first direction and being spaced apart from each other, a second electrode line layer including a plurality of second electrode lines extending on the first electrode line layer in a second direction that is different from the first direction and being spaced apart from each other, and a memory cell layer including a plurality of first memory cells located at a plurality of intersections between the plurality of first electrode lines and the plurality of second electrode lines, each first memory cell including a selection device layer, an intermediate electrode and a variable resistance layer that are sequentially stacked. A side surface of the variable resistance layer is perpendicular to a top surface of the substrate or inclined to be gradually wider toward an upper portion of the variable resistance layer. The first memory cell has a side surface slope so as to have a width gradually decreasing toward its upper portion.

    Semiconductor device including variable resistance memory device

    公开(公告)号:US10319784B2

    公开(公告)日:2019-06-11

    申请号:US15858349

    申请日:2017-12-29

    Abstract: A semiconductor device includes a substrate including a memory cell region and a logic region; a variable resistance memory device on the memory cell region; a logic device on the logic region; a first horizontal bit line extending in a horizontal direction on a surface of the substrate on the memory cell region and electrically connected to the variable resistance memory device; a second horizontal bit line extending in a horizontal direction on the surface of the substrate on the logic region and electrically connected to the logic device; and a vertical bit line electrically connected to the first horizontal bit line and the second horizontal bit line and extending perpendicular to the surface of the substrate.

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