Method of fabricating MONOS semiconductor device
    17.
    发明授权
    Method of fabricating MONOS semiconductor device 有权
    制造MONOS半导体器件的方法

    公开(公告)号:US08853768B1

    公开(公告)日:2014-10-07

    申请号:US13798393

    申请日:2013-03-13

    Abstract: A method for fabricating a semiconductor device is provided. The method includes forming a plurality of gate structures having asymmetric sidewalls including a tall side and a short side. Adjacent ones of the plurality of gate structures are separated by a tall side-tall side region and a short side-short side region. The method further comprises forming a spacer layer over the plurality of gate structures and a bottom surface of the tall side-tall side region and the short side-short side region, depositing an oxide layer over the spacer layer, etching the bottom surface portions of the oxide layer, and selectively etching the sidewall portions of the oxide layer in the tall side-tall side region.

    Abstract translation: 提供一种制造半导体器件的方法。 该方法包括形成具有包括高边和短边的不对称侧壁的多个栅极结构。 多个栅极结构中的相邻的栅极结构被一个高的侧边侧区域和短侧边区域隔开。 所述方法还包括在所述多个栅极结构上形成间隔层,以及在所述高侧边侧区域和所述短边侧短边区域的底表面上形成间隔层,在所述间隔层上方沉积氧化物层, 氧化物层,并且选择性地蚀刻位于高侧高侧区域中的氧化物层的侧壁部分。

    NON-VOLATILE MEMORY DEVICE AND MANUFACTURING TECHNOLOGY

    公开(公告)号:US20210351348A1

    公开(公告)日:2021-11-11

    申请号:US16866704

    申请日:2020-05-05

    Abstract: A memory cell with hard mask insulator and its manufacturing methods are provided. In some embodiments, a memory cell stack is formed over a substrate having a bottom electrode layer, a resistance switching dielectric layer over the bottom electrode layer, and a top electrode layer over the resistance switching dielectric layer. A first insulating layer is formed over the top electrode layer. A first metal hard masking layer is formed over the first insulating layer. Then, a series of etch is performed to pattern the first metal hard masking layer, the first insulating layer, the top electrode layer and the resistance switching dielectric layer to form a first metal hard mask, a hard mask insulator, a top electrode, and a resistance switching dielectric.

    SIDEWALL SPACER STRUCTURE FOR MEMORY CELL

    公开(公告)号:US20210111333A1

    公开(公告)日:2021-04-15

    申请号:US16601723

    申请日:2019-10-15

    Abstract: Various embodiments of the present disclosure are directed towards an integrated chip including a magnetoresistive random access memory (MRAM) cell over a substrate. A dielectric structure overlies the substrate. The MRAM cell is disposed within the dielectric structure. The MRAM cell includes a magnetic tunnel junction (MTJ) sandwiched between a bottom electrode and a top electrode. A conductive wire overlies the top electrode. A sidewall spacer structure continuously extends along a sidewall of the MTJ and the top electrode. The sidewall spacer structure includes a first sidewall spacer layer, a second sidewall spacer layer, and a protective sidewall spacer layer sandwiched between the first and second sidewall spacer layers. The first and second sidewall spacer layers comprise a first material and the protective sidewall spacer layer comprises a second material different than the first material.

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