Top electrode dome formation
    11.
    发明授权

    公开(公告)号:US09905282B1

    公开(公告)日:2018-02-27

    申请号:US15608407

    申请日:2017-05-30

    摘要: Methods of fabricating a dome-shaped MTJ TE and the resulting devices are provided. Embodiments include forming a MRAM stack having a laterally separated MTJ structures and the MRAM and a logic stack each having a SiN layer; forming first trenches through the MRAM stack to a portion of the SiN layer above an MTJ structure; forming second trenches through the SiN layer fully landing on an upper portion of the MTJ structures and removing the SiN layer of the logic stack; forming a TaN layer over the MRAM and logic stack; removing portions of the TaN layer on opposite sides of the MTJ structures and therebetween; forming an oxide layer over the MRAM and logic stacks; and forming vias through the oxide layer of the MRAM stack down the TaN layer above MTJ structures and a via through the logic stack.

    Shielded MRAM cell
    15.
    发明授权

    公开(公告)号:US10439129B2

    公开(公告)日:2019-10-08

    申请号:US15874077

    申请日:2018-01-18

    摘要: One illustrative integrated circuit (IC) product disclosed herein includes an MRAM cell, the MRAM cell having an outer perimeter, wherein the MRAM cell comprises a bottom electrode, a top electrode and an MTJ (Magnetic Tunnel Junction) element positioned above the bottom electrode and below the top electrode. In this example, the IC product also includes an insulating material positioned around the outer perimeter of the MRAM cell and a conductive sidewall spacer comprised of a metal-containing shielding material positioned around the outer perimeter of the MRAM cell, wherein the insulating material is positioned between the conductive sidewall spacer and the MRAM cell.

    Cost-effective method to form a reliable memory device with selective silicidation and resulting device

    公开(公告)号:US10224338B2

    公开(公告)日:2019-03-05

    申请号:US15490329

    申请日:2017-04-18

    发明人: Soh Yun Siah

    摘要: A method of forming a memory device with a dielectric blocking layer and selective silicidation and the resulting device are provided. Embodiments include forming a memory stack on a substrate; forming a conformal insulating layer over sidewalls and an upper surface of the memory stack and the substrate; forming an interpoly dielectric structure adjacent to each sidewall of the insulating layer; forming a conformal polysilicon silicon layer over the insulating layer and interpoly dielectric structures; forming an optical planarization layer over the polysilicon layer; planarizing the optical planarization and polysilicon layers down to the memory stack; forming a dielectric blocking layer over the memory stack and substrate; forming a patterning stack over the dielectric blocking layer, the patterning stack covering a portion of the memory stack; and removing the dielectric blocking, optical planarization, and polysilicon layers on opposite sides of the patterning stack.