Method for fabricating semiconductor memory device having integrated DOSRAM and NOSRAM

    公开(公告)号:US10102907B2

    公开(公告)日:2018-10-16

    申请号:US15382755

    申请日:2016-12-19

    Abstract: A method for fabricating a semiconductor memory device is disclosed. A semiconductor substrate having a main surface is prepared. At least a first dielectric layer is formed on the main surface of the semiconductor substrate. A first OS FET device and a second OS FET device are formed on the first dielectric layer. At least a second dielectric layer is formed to cover the first dielectric layer, the first OS FET device, and the second OS FET device. A first MIM capacitor and a second MIM capacitor are formed on the second dielectric layer. The first MIM capacitor is electrically coupled to the first OS FET device, thereby constituting a DOSRAM cell. The second MIM capacitor is electrically coupled to the second OS FET device, thereby constituting a NOSRAM cell.

    CAPACITOR AND FABRICATION METHOD THEREOF

    公开(公告)号:US20170170256A1

    公开(公告)日:2017-06-15

    申请号:US14996244

    申请日:2016-01-15

    CPC classification number: H01L28/91

    Abstract: A method for fabricating capacitor is disclosed. The method includes the steps of: providing a material layer; forming a first conductive layer, a first dielectric layer, and a second conductive layer on the material layer; patterning the first dielectric layer and the second conductive layer to form a patterned first dielectric layer and a middle electrode; forming a second dielectric layer on the first conductive layer and the middle electrode; removing part of the second dielectric layer to form a patterned second dielectric layer; forming a third conductive layer on the first conductive layer and the patterned second dielectric layer, wherein the third conductive layer contacts the first conductive layer directly; and removing part of the third conductive layer to expose part of the patterned second dielectric layer.

    SEMICONDUCTOR APPARATUS
    6.
    发明申请

    公开(公告)号:US20150357397A1

    公开(公告)日:2015-12-10

    申请号:US14445416

    申请日:2014-07-29

    CPC classification number: H01L28/40 H01L28/60

    Abstract: A semiconductor apparatus including a stacked capacitance structure is provided. The stacked capacitance structure includes a first inner metal layer having a first pad area adjacent to an edge of the first inner metal layer, a first insulating layer disposed on the first inner metal layer and exposing the first pad area, a second inner metal layer disposed on the first insulating layer and having a second pad area adjacent to an edge of the second inner metal layer, a second insulating layer disposed on the second inner metal layer and exposing the second pad area, and a third inner metal layer covering the second inner metal layer and including at least one first slit. The first pad area and the second pad area include a plurality of pads. The first slit corresponds to the second pad area, such that the pads on the second pad area are exposed.

    Abstract translation: 提供了包括堆叠电容结构的半导体装置。 堆叠的电容结构包括具有与第一内金属层的边缘相邻的第一焊盘区域的第一内部金属层,设置在第一内部金属层上并暴露第一焊盘区域的第一绝缘层,设置的第二内部金属层 在第一绝缘层上并且具有与第二内金属层的边缘相邻的第二焊盘区域,设置在第二内金属层上并暴露第二焊盘区域的第二绝缘层,以及覆盖第二内金属层的第三内金属层 金属层并且包括至少一个第一狭缝。 第一焊盘区域和第二焊盘区域包括多个焊盘。 第一狭缝对应于第二焊盘区域,使得第二焊盘区域上的焊盘露出。

    Capacitor and fabrication method thereof

    公开(公告)号:US09966428B2

    公开(公告)日:2018-05-08

    申请号:US14996244

    申请日:2016-01-15

    CPC classification number: H01L28/91

    Abstract: A method for fabricating capacitor is disclosed. The method includes the steps of: providing a material layer; forming a first conductive layer, a first dielectric layer, and a second conductive layer on the material layer; patterning the first dielectric layer and the second conductive layer to form a patterned first dielectric layer and a middle electrode; forming a second dielectric layer on the first conductive layer and the middle electrode; removing part of the second dielectric layer to form a patterned second dielectric layer; forming a third conductive layer on the first conductive layer and the patterned second dielectric layer, wherein the third conductive layer contacts the first conductive layer directly; and removing part of the third conductive layer to expose part of the patterned second dielectric layer.

Patent Agency Ranking