Trench capacitors with insulating layer collars in undercut regions and method of fabricating the same
    1.
    发明申请
    Trench capacitors with insulating layer collars in undercut regions and method of fabricating the same 失效
    在底切区域具有绝缘层套的沟槽电容器及其制造方法

    公开(公告)号:US20050212026A1

    公开(公告)日:2005-09-29

    申请号:US11037626

    申请日:2005-01-18

    摘要: Trench capacitors that have insulating layer collars in undercut regions and methods of fabricating such trench capacitors are provided. Some methods of fabricating a trench capacitor include forming a first layer on a substrate. A second layer is formed on the first layer opposite to the substrate. A mask is formed that has an opening on top of the first and second layers. A first trench is formed by removing a portion of the first and second layers through the opening in the mask. A portion of the first layer under the second layer is removed to form an undercut region under the second layer. An insulating layer collar is formed in the undercut region under the second layer. A second trench is formed that extends from the first trench by removing a portion of the substrate through the opening in the mask. A buried plate is formed in the substrate along the second trench. A dielectric layer is formed on an inner wall and bottom of the second trench. A storage electrode is formed in the second trench on the dielectric layer.

    摘要翻译: 提供了在底切区域中具有绝缘层套环的沟槽电容器和制造这种沟槽电容器的方法。 制造沟槽电容器的一些方法包括在衬底上形成第一层。 在与衬底相对的第一层上形成第二层。 形成在第一和第二层的顶部上具有开口的掩模。 通过从掩模中的开口去除第一层和第二层的一部分来形成第一沟槽。 除去第二层下面的第一层的一部分,以在第二层下形成底切区域。 在第二层下方的底切区域中形成绝缘层套环。 形成第二沟槽,其通过从掩模中的开口去除衬底的一部分而从第一沟槽延伸。 掩埋板沿着第二沟槽形成在衬底中。 介电层形成在第二沟槽的内壁和底部上。 在电介质层上的第二沟槽中形成存储电极。

    Trench capacitors with insulating layer collars in undercut regions
    2.
    发明授权
    Trench capacitors with insulating layer collars in undercut regions 失效
    带有绝缘层的沟槽电容器在底切区域

    公开(公告)号:US07531861B2

    公开(公告)日:2009-05-12

    申请号:US12033065

    申请日:2008-02-19

    IPC分类号: H01L29/94

    摘要: Trench capacitors that have insulating layer collars in undercut regions and methods of fabricating such trench capacitors are provided. Some methods of fabricating a trench capacitor include forming a first layer on a substrate. A second layer is formed on the first layer opposite to the substrate. A mask is formed that has an opening on top of the first and second layers. A first trench is formed by removing a portion of the first and second layers through the opening in the mask. A portion of the first layer under the second layer is removed to form an undercut region under the second layer. An insulating layer collar is formed in the undercut region under the second layer. A second trench is formed that extends from the first trench by removing a portion of the substrate through the opening in the mask. A buried plate is formed in the substrate along the second trench. A dielectric layer is formed on an inner wall and bottom of the second trench. A storage electrode is formed in the second trench on the dielectric layer.

    摘要翻译: 提供了在底切区域中具有绝缘层套环的沟槽电容器和制造这种沟槽电容器的方法。 制造沟槽电容器的一些方法包括在衬底上形成第一层。 在与衬底相对的第一层上形成第二层。 形成在第一和第二层的顶部上具有开口的掩模。 通过从掩模中的开口去除第一层和第二层的一部分来形成第一沟槽。 除去第二层下面的第一层的一部分,以在第二层下形成底切区域。 在第二层下方的底切区域中形成绝缘层套环。 形成第二沟槽,其通过从掩模中的开口去除衬底的一部分而从第一沟槽延伸。 掩埋板沿着第二沟槽形成在衬底中。 介电层形成在第二沟槽的内壁和底部上。 在电介质层上的第二沟槽中形成存储电极。

    TRENCH CAPACITORS WITH INSULATING LAYER COLLARS IN UNDERCUT REGIONS
    3.
    发明申请
    TRENCH CAPACITORS WITH INSULATING LAYER COLLARS IN UNDERCUT REGIONS 失效
    在内陆地区具有绝缘层的TRENCH电容器

    公开(公告)号:US20080135876A1

    公开(公告)日:2008-06-12

    申请号:US12033065

    申请日:2008-02-19

    IPC分类号: H01L29/94

    摘要: Trench capacitors that have insulating layer collars in undercut regions and methods of fabricating such trench capacitors are provided. Some methods of fabricating a trench capacitor include forming a first layer on a substrate. A second layer is formed on the first layer opposite to the substrate. A mask is formed that has an opening on top of the first and second layers. A first trench is formed by removing a portion of the first and second layers through the opening in the mask. A portion of the first layer under the second layer is removed to form an undercut region under the second layer. An insulating layer collar is formed in the undercut region under the second layer. A second trench is formed that extends from the first trench by removing a portion of the substrate through the opening in the mask. A buried plate is formed in the substrate along the second trench. A dielectric layer is formed on an inner wall and bottom of the second trench. A storage electrode is formed in the second trench on the dielectric layer.

    摘要翻译: 提供了在底切区域中具有绝缘层套环的沟槽电容器和制造这种沟槽电容器的方法。 制造沟槽电容器的一些方法包括在衬底上形成第一层。 在与衬底相对的第一层上形成第二层。 形成在第一和第二层的顶部上具有开口的掩模。 通过从掩模中的开口去除第一层和第二层的一部分来形成第一沟槽。 除去第二层下面的第一层的一部分,以在第二层下形成底切区域。 在第二层下方的底切区域中形成绝缘层套环。 形成第二沟槽,其通过从掩模中的开口去除衬底的一部分而从第一沟槽延伸。 掩埋板沿着第二沟槽形成在衬底中。 介电层形成在第二沟槽的内壁和底部上。 在电介质层上的第二沟槽中形成存储电极。

    Methods of fabricating trench capacitors with insulating layer collars in undercut regions
    4.
    发明授权
    Methods of fabricating trench capacitors with insulating layer collars in undercut regions 失效
    在底切区域制造具有绝缘层环的沟槽电容器的方法

    公开(公告)号:US07354821B2

    公开(公告)日:2008-04-08

    申请号:US11037626

    申请日:2005-01-18

    IPC分类号: H01L21/8242 H01L21/336

    摘要: Trench capacitors that have insulating layer collars in undercut regions and methods of fabricating such trench capacitors are provided. Some methods of fabricating a trench capacitor include forming a first layer on a substrate. A second layer is formed on the first layer opposite to the substrate. A mask is formed that has an opening on top of the first and second layers. A first trench is formed by removing a portion of the first and second layers through the opening in the mask. A portion of the first layer under the second layer is removed to form an undercut region under the second layer. An insulating layer collar is formed in the undercut region under the second layer. A second trench is formed that extends from the first trench by removing a portion of the substrate through the opening in the mask. A buried plate is formed in the substrate along the second trench. A dielectric layer is formed on an inner wall and bottom of the second trench. A storage electrode is formed in the second trench on the dielectric layer.

    摘要翻译: 提供了在底切区域中具有绝缘层套环的沟槽电容器和制造这种沟槽电容器的方法。 制造沟槽电容器的一些方法包括在衬底上形成第一层。 在与衬底相对的第一层上形成第二层。 形成在第一和第二层的顶部上具有开口的掩模。 通过从掩模中的开口去除第一层和第二层的一部分来形成第一沟槽。 除去第二层下面的第一层的一部分,以在第二层下形成底切区域。 在第二层下方的底切区域中形成绝缘层套环。 形成第二沟槽,其通过从掩模中的开口去除衬底的一部分而从第一沟槽延伸。 掩埋板沿着第二沟槽形成在衬底中。 介电层形成在第二沟槽的内壁和底部上。 在电介质层上的第二沟槽中形成存储电极。

    Methods for forming semiconductor devices including thermal processing
    9.
    发明授权
    Methods for forming semiconductor devices including thermal processing 有权
    用于形成包括热处理的半导体器件的方法

    公开(公告)号:US07335550B2

    公开(公告)日:2008-02-26

    申请号:US11641138

    申请日:2006-12-19

    IPC分类号: H01L21/8234

    CPC分类号: H01L28/65 H01L28/40

    摘要: Methods for fabricating semiconductor memory devices may include forming a first conductive layer for a first electrode on a semiconductor substrate, forming a dielectric layer on the first conductive layer, and forming a second conductive layer for a second electrode on the dielectric layer. Portions of the second conductive layer and the dielectric layer can be removed, and a thermal process can be performed on the second conductive layer and the dielectric layer. The thermal process can reduce interface stress between the second conductive layer and the dielectric layer and/or cure the dielectric layer. In addition, the dielectric layer may be maintained in an amorphous state during and after the thermal process.

    摘要翻译: 用于制造半导体存储器件的方法可以包括在半导体衬底上形成用于第一电极的第一导电层,在第一导电层上形成电介质层,以及在电介质层上形成用于第二电极的第二导电层。 可以去除第二导电层和电介质层的部分,并且可以在第二导电层和电介质层上进行热处理。 热处理可以减少第二导电层和电介质层之间的界面应力和/或固化电介质层。 此外,在热处理期间和之后,电介质层可以保持在非晶状态。