VARIABLE RESISTANCE MEMORY WITH LATTICE ARRAY USING ENCLOSING TRANSISTORS

    公开(公告)号:US20190057739A1

    公开(公告)日:2019-02-21

    申请号:US16153143

    申请日:2018-10-05

    发明人: Jun Liu

    IPC分类号: G11C13/00

    摘要: A variable resistance memory array, programming a variable resistance memory element and methods of forming the array. A variable resistance memory array is formed with a plurality of word line transistors surrounding each phase change memory element. To program a selected variable resistance memory element, all of the bitlines are grounded or biased at the same voltage. A top electrode select line that is in contact with the selected variable resistance memory element is selected. The word line having the word line transistors surrounding the selected variable resistance memory element are turned on to supply programming current to the element. Current flows from the selected top electrode select line through the variable resistance memory element into the common source/drain region of the surrounding word line transistors, across the transistors to the nearest bitline contacts. The word lines are patterned in various lattice configurations.

    RESISTIVE RANDOM ACCESS MEMORY STRUCTURE AND MANUFACTURING METHOD THEREOF

    公开(公告)号:US20180331282A1

    公开(公告)日:2018-11-15

    申请号:US15594498

    申请日:2017-05-12

    发明人: Mengkai Zhu

    IPC分类号: H01L45/00 H01L27/24

    摘要: A resistive random access memory (RRAM) structure including a substrate, RRAM cells and protection layers is provided. The RRAM cells are adjacent to each other and disposed on the substrate. The protection layers are disposed respectively on sidewalls of the RRAM cells without covering top surfaces of the RRAM cells. Each of the protection layers includes a sidewall portion and an extension portion. The sidewall portion is disposed on each of the sidewalls of each of the RRAM cells. The extension portion is connected to a lower portion of the sidewall portion. An upper portion of the extension portion is lower than an upper portion of the sidewall portion. The extension portion is connected between the sidewall portions in a region between the RRAM cells.