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    • 3. 发明申请
    • Semiconductor device
    • 半导体器件
    • US20090189282A1
    • 2009-07-30
    • US12318862
    • 2009-01-09
    • Yoshihisa TakadaSatoshi Kageyama
    • Yoshihisa TakadaSatoshi Kageyama
    • H01L23/532
    • H01L23/53238H01L23/53295H01L2924/0002H01L2924/00
    • A semiconductor device according to the present invention includes: a low dielectric layer made of a low dielectric material; a high dielectric layer formed on the low dielectric layer and made of a high dielectric material having a higher dielectric constant than the low dielectric material; a protective layer formed on the high dielectric layer and made of an insulating material differing from the low dielectric material and the high dielectric material; a groove formed by digging in from an upper surface of the protective layer to the low dielectric layer; a barrier film coated onto a bottom surface and side surfaces of the groove and made of a material having a barrier property with respect to diffusion of Cu; and a wiring formed on the barrier film, made of a metal material having Cu as a main component, and completely filling the groove.
    • 根据本发明的半导体器件包括:由低介电材料制成的低介电层; 形成在低介电层上并由具有比低电介质材料更高的介电常数的高电介质材料制成的高介电层; 形成在高电介质层上并由不同于低电介质材料和高电介质材料的绝缘材料制成的保护层; 通过从所述保护层的上表面向所述低介电层进行挖掘而形成的槽; 阻挡膜涂覆在槽的底表面和侧表面上,并且由相对于Cu的扩散具有阻挡性的材料制成; 以及形成在由Cu作为主要成分的金属材料制成的阻挡膜上并且完全填充槽的布线。
    • 4. 发明授权
    • Semiconductor device having multilayer interconnection structure
    • 具有多层互连结构的半导体器件
    • US08164197B2
    • 2012-04-24
    • US12222309
    • 2008-08-06
    • Yuichi NakaoSatoshi Kageyama
    • Yuichi NakaoSatoshi Kageyama
    • H01L23/535
    • H01L23/522H01L23/53295H01L2924/0002H01L2924/00
    • A semiconductor device according to the present invention includes: a first interlayer dielectric film; a lower wire formed on the first interlayer dielectric film; a second interlayer dielectric film formed on the first interlayer dielectric film and the lower wire; and an upper wire formed on the second interlayer dielectric film to intersect with a prescribed portion of the lower wire in plan view. The first interlayer dielectric film is provided with a groove dug from the upper surface thereof in a region including the prescribed portion in plan view. The prescribed portion enters the groove. At least a portion of the second interlayer dielectric film formed on the lower wire has a planar upper surface.
    • 根据本发明的半导体器件包括:第一层间电介质膜; 形成在所述第一层间电介质膜上的下线; 形成在第一层间电介质膜和下导线上的第二层间绝缘膜; 以及形成在第二层间电介质膜上的上部线,在平面图中与下部电线的规定部分相交。 第一层间电介质膜在平面图中包括从规定部分的区域中从其上表面挖出的沟槽。 规定部分进入凹槽。 形成在下导线上的第二层间绝缘膜的至少一部分具有平坦的上表面。
    • 5. 发明申请
    • SEMICONDUCTOR DEVICE AND SEMICONDUCTOR DEVICE MANUFACTURING METHOD
    • 半导体器件和半导体器件制造方法
    • US20100032837A1
    • 2010-02-11
    • US12445168
    • 2007-10-11
    • Ryosuke NakagawaTakahisa YamahaYuichi NakaoKatsumi SameshimaSatoshi Kageyama
    • Ryosuke NakagawaTakahisa YamahaYuichi NakaoKatsumi SameshimaSatoshi Kageyama
    • H01L23/532H01L21/768
    • H01L21/76808H01L21/2855H01L21/76846H01L23/53238H01L23/53295H01L2924/0002H01L2924/00
    • A semiconductor device according to the present invention includes: a semiconductor substrate; a first copper interconnection provided on the semiconductor substrate; an insulating layer provided over the first copper interconnection and having a hole extending therethrough to the first copper interconnection; a barrier layer composed of a tantalum-containing material and covering at least a sidewall of the hole and a part of the first copper interconnection exposed in the hole; and a second copper interconnection provided in intimate contact with the barrier layer and electrically connected to the first copper interconnection via the barrier layer; wherein the barrier layer has a nitrogen concentration profile such that the concentration of nitrogen contained in the material varies to be lower in a boundary portion of the barrier layer adjacent to the first copper interconnection and in a boundary portion of the barrier layer adjacent to the second copper interconnection and higher in an intermediate portion of the barrier layer defined between the boundary portions.
    • 根据本发明的半导体器件包括:半导体衬底; 设置在半导体衬底上的第一铜互连; 绝缘层,设置在所述第一铜互连上并且具有穿过其延伸到所述第一铜互连的孔; 由含钽材料构成并且覆盖所述孔的至少一个侧壁和暴露在所述孔中的所述第一铜互连的一部分的阻挡层; 以及第二铜互连,其与阻挡层紧密接触并且经由阻挡层电连接到第一铜互连; 其中所述阻挡层具有氮浓度分布,使得所述材料中包含的氮的浓度在与所述第一铜互连相邻的所述阻挡层的边界部分中以及在与所述第二铜互连相邻的所述势垒层的边界部分中变低 铜互连并且在边界部分之间限定的阻挡层的中间部分中较高。