Method for removing metal foot during high-k dielectric/metal gate etching
    2.
    发明申请
    Method for removing metal foot during high-k dielectric/metal gate etching 有权
    在高k电介质/金属栅极蚀刻期间去除金属脚的方法

    公开(公告)号:US20070166973A1

    公开(公告)日:2007-07-19

    申请号:US11331786

    申请日:2006-01-13

    IPC分类号: H01L21/467

    摘要: A metal layer etch process deposits, patterns and anisotropically etches a polysilicon layer (24) down to an underlying metal layer (22) to form an etched polysilicon structure (54) with polymer layers (50, 52) formed on its sidewall surfaces. The polymer layer (50, 52) are removed to expose an additional surface area (60, 62) of the metal layer (22), and dielectric layers (80, 82) are formed on the sidewall surfaces of the etched polysilicon structure (54). Next, the metal layer (22) is plasma etched to form an etched metal layer (95) with substantially vertical sidewall surfaces (97, 99) by simultaneously charging the dielectric layers (80, 82) to change plasma ion trajectories near the dielectric layers (80, 82) so that plasma ions (92, 94) impact the sidewall surfaces (97, 99) in a more perpendicular angle to enhance etching of the sidewall surfaces (97, 99) of the etched metal layer (95).

    摘要翻译: 金属层蚀刻工艺沉积,图案和各向异性地将多晶硅层(24)向下蚀刻到下面的金属层(22)以形成蚀刻的多晶硅结构(54),其上形成有在其侧壁表面上的聚合物层(50,52)。 去除聚合物层(50,52)以暴露金属层(22)的另外的表面区域(60,62),并且在蚀刻的多晶硅结构(54)的侧壁表面上形成介电层(80,82) )。 接下来,通过同时对电介质层(80,82)充电以改变电介质层附近的等离子体离子轨迹,等离子体蚀刻金属层(22)以形成具有基本上垂直的侧壁表面(97,99)的蚀刻金属层(95) (80,82),使得等离子体离子(92,94)以更垂直的角度冲击侧壁表面(97,99)以增强蚀刻金属层(95)的侧壁表面(97,99)的蚀刻。

    Thin-film capacitor with a field modification layer and methods for forming the same
    4.
    发明申请
    Thin-film capacitor with a field modification layer and methods for forming the same 有权
    具有场改性层的薄膜电容器及其形成方法

    公开(公告)号:US20070155113A1

    公开(公告)日:2007-07-05

    申请号:US11326524

    申请日:2006-01-04

    IPC分类号: H01L21/8242 H01L21/20

    CPC分类号: H01L28/40 H01L28/57

    摘要: A method for forming a capacitor includes providing a metal-containing bottom electrode, forming a capacitor insulator over the metal-containing bottom electrode, forming a metal-containing top electrode over the capacitor insulator, and forming a dielectric-containing field modification layer over the capacitor insulator and at least partially surrounding the metal-containing top electrode. Forming the dielectric-containing field modification layer may include oxidizing a sidewall of the metal-containing field modification layer. A barrier layer may be formed over the capacitor insulator prior to forming the metal-containing top electrode.

    摘要翻译: 一种形成电容器的方法包括提供含金属的底部电极,在含金属的底部电极上形成电容器绝缘体,在电容器绝缘体之上形成含金属的顶部电极,并在 电容器绝缘体并且至少部分地围绕含金属的顶部电极。 形成含电介质的场改性层可以包括氧化含金属的场改性层的侧壁。 在形成含金属的顶部电极之前,可以在电容器绝缘体上形成阻挡层。

    Process for making a MIM capacitor
    5.
    发明授权
    Process for making a MIM capacitor 失效
    制造MIM电容器的工艺

    公开(公告)号:US06461914B1

    公开(公告)日:2002-10-08

    申请号:US09942208

    申请日:2001-08-29

    IPC分类号: H01L218242

    摘要: A process for forming a metal-insulator-metal (MIM) capacitor structure includes forming a recess in the dielectric layer (20) of a semiconductor substrate (10). A first capacitor electrode (30, 40) is formed in the recess having a copper first metal layer (30) with a conductive oxidation barrier (40) formed over the first metal layer (30). The first capacitor electrode (30, 40) is planarized relative to the dielectric layer (20). An insulator (50) is formed over the first capacitor electrode (30, 40) and a second capacitor electrode (65) is formed over the insulator (50). Forming the first capacitor electrode (30, 40) in the recess maintains the alignment of a periphery of the copper first metal layer (30) with the conductive oxidation barrier (40).

    摘要翻译: 一种形成金属 - 绝缘体 - 金属(MIM)电容器结构的方法包括在半导体衬底(10)的介电层(20)中形成凹陷。 在具有在第一金属层(30)上形成有导电氧化阻挡层(40)的铜第一金属层(30)的凹部中形成第一电容器电极(30,40)。 第一电容器电极(30,40)相对于电介质层(20)平面化。 绝缘体(50)形成在第一电容器电极(30,40)上,并且第二电容器电极(65)形成在绝缘体(50)上。 在凹部中形成第一电容器电极(30,40)保持铜第一金属层(30)的周边与导电氧化屏障(40)的对准。