Method for preventing extreme low-K (ELK) dielectric layer from being damaged during plasma process
    5.
    发明授权
    Method for preventing extreme low-K (ELK) dielectric layer from being damaged during plasma process 有权
    用于防止极低K(ELK)电介质层在等离子体处理过程中损坏的方法

    公开(公告)号:US09355893B1

    公开(公告)日:2016-05-31

    申请号:US14600452

    申请日:2015-01-20

    Abstract: A method for forming an interconnect structure is provided. The method includes providing a substrate. The method also includes forming a dielectric layer on the substrate, and the dielectric layer includes an extreme low-k (ELK) dielectric layer. The method includes forming a via hole in the dielectric layer and forming a photoresist in the via hole and on the dielectric layer. The method also includes removing the photoresist by a plasma process using a CxHyOz gas and forming a conductive structure in the via hole.

    Abstract translation: 提供一种形成互连结构的方法。 该方法包括提供基板。 该方法还包括在衬底上形成电介质层,并且介电层包括极低k(ELK)电介质层。 该方法包括在电介质层中形成通孔,并在通孔和电介质层上形成光致抗蚀剂。 该方法还包括通过使用C x H y O z气体的等离子体工艺去除光致抗蚀剂并在通孔中形成导电结构。

    Removing polymer through treatment

    公开(公告)号:US12272595B2

    公开(公告)日:2025-04-08

    申请号:US17453872

    申请日:2021-11-08

    Abstract: A method includes depositing a mask layer over a dielectric layer, patterning the mask layer to form a trench, applying a patterned photo resist having a portion over the mask layer, and etching the dielectric layer using the patterned photo resist as an etching mask to form a via opening, which is in a top portion of the dielectric layer. The method further includes removing the patterned photo resist, and etching the dielectric layer to form a trench and a via opening underlying and connected to the trench. The dielectric layer is etched using the mask layer as an additional etching mask. A polymer formed in at least one of the trench and the via opening is removed using nitrogen and argon as a process gas. The trench and the via opening are filled to form a metal line and a via, respectively.

    Mechanisms for forming semiconductor device structure with feature opening
    10.
    发明授权
    Mechanisms for forming semiconductor device structure with feature opening 有权
    用于形成具有特征开口的半导体器件结构的机构

    公开(公告)号:US09425094B2

    公开(公告)日:2016-08-23

    申请号:US14583238

    申请日:2014-12-26

    Abstract: A method for forming a semiconductor device structure is provided. The method includes forming a dielectric layer over a semiconductor substrate and forming a hard mask layer over the dielectric layer. The method also includes performing a plasma etching process to etch the hard mask layer to form an opening, and a gas mixture used in the plasma etching process includes a nitrogen-containing gas, a halogen-containing gas, and a carbon-containing gas. The gas mixture has a volumetric concentration of the nitrogen-containing gas in a range from about 20% to about 30%. A volumetric concentration ratio of the carbon-containing gas to the halogen-containing gas in the gas mixture is equal to about 0.3. The method further includes etching the dielectric layer through the opening in the hard mask layer to form a feature opening in the dielectric layer. The method includes forming a conductive material in the feature opening.

    Abstract translation: 提供一种形成半导体器件结构的方法。 该方法包括在半导体衬底上形成电介质层并在电介质层上形成硬掩模层。 该方法还包括执行等离子体蚀刻工艺以蚀刻硬掩模层以形成开口,并且在等离子体蚀刻工艺中使用的气体混合物包括含氮气体,含卤素气体和含碳气体。 气体混合物的含氮气体的体积浓度在约20%至约30%的范围内。 气体混合物中含碳气体与含卤素气体的体积浓度比等于约0.3。 该方法还包括通过硬掩模层中的开口蚀刻介电层,以形成电介质层中的特征开口。 该方法包括在特征开口中形成导电材料。

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