Method for manufacturing semiconductor device having porous structure with air-gaps
    1.
    发明申请
    Method for manufacturing semiconductor device having porous structure with air-gaps 有权
    具有空隙的具有多孔结构的半导体器件的制造方法

    公开(公告)号:US20040087133A1

    公开(公告)日:2004-05-06

    申请号:US10693200

    申请日:2003-10-24

    Applicant: ASM JAPAN K.K.

    Inventor: Devendra Kumar

    CPC classification number: H01L21/76835 H01L21/76807 H01L21/7682

    Abstract: A method for manufacturing a semiconductor device includes: (i) depositing a sacrificial layer made of an organic polymer such as benzocyclobutene on a substrate having a circuit formed thereon; (ii) etching the sacrificial layer except for a portion where air gaps are to be formed; (iii) depositing a low-dielectric layer over the substrate until the portion for air gaps is entirely enclosed in the low-dielectric layer; (iv) etching the low-dielectric layer to form via holes and trenches there through; (v) prior or subsequent to step (iv), removing the portion for air gaps; and (vi) depositing copper in the vias and trenches which are filled with the copper contacting a surface of the substrate.

    Abstract translation: 半导体器件的制造方法包括:(i)在其上形成有电路的基板上沉积由诸如苯并环丁烯的有机聚合物制成的牺牲层; (ii)蚀刻除了要形成气隙的部分之外的牺牲层; (iii)在所述衬底上沉积低介电层,直到所述空隙部分完全封闭在所述低电介质层中; (iv)蚀刻低电介质层以在其上形成通孔和沟槽; (v)在步骤(iv)之前或之后,除去气隙部分; 和(vi)在通孔和沟槽中沉积铜,所述通孔和沟槽填充有与基底表面接触的铜。

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