METHOD FOR PRODUCTION OF A MEMORY CAPACITOR
    1.
    发明申请
    METHOD FOR PRODUCTION OF A MEMORY CAPACITOR 审中-公开
    用于生产存储器用电容器

    公开(公告)号:WO02069345A2

    公开(公告)日:2002-09-06

    申请号:PCT/DE0200436

    申请日:2002-02-06

    Abstract: The invention relates to a novel method for production of a memory capacitor, embodied as a trench or laminar condenser and is used, in particular, in a DRAM memory cell. Said method comprises the following steps: a lower metallic condenser electrode (13), a storage dielectric (14) and an upper condenser electrode (15) are formed, whereby the lower metallic condenser electrode (13) is formed in a self-justified manner on a silicon base material (1), then a free silicon region is formed in those positions where the lower condenser electrode is to be formed and then metal silicide (13) is formed selectively on the free silicon.

    Abstract translation: 本发明涉及一种用于存储电容器,其被设计为沟槽或叠层电容器,特别是用于在DRAM的存储单元的制备的新方法。 本发明方法包括在上一个硅基底材料的自对准的方式形成下金属电容器电极(13),存储介质(14)和上电容器电极(15),所述下部金属电容器电极(13)的步骤(1)形成 是,首先在在该下电容器电极是该位置的所有暴露的硅区中形成,产生,然后施加到金属硅化物(13)的暴露的硅区域上选择性地形成。

    TRENCH CONDENSER AND METHOD FOR PRODUCTION THEREOF
    2.
    发明申请
    TRENCH CONDENSER AND METHOD FOR PRODUCTION THEREOF 审中-公开
    抓斗电容器及其制造方法

    公开(公告)号:WO02069375A3

    公开(公告)日:2003-03-13

    申请号:PCT/DE0200515

    申请日:2002-02-13

    CPC classification number: H01L27/10861 H01L27/1203

    Abstract: The invention relates to a trench condenser for use in a DRAM memory cell and a method for production of said trench condenser. Said trench condenser comprises a lower condenser electrode (10), a memory dielectric (12) and an upper condenser electrode (18), at least partly arranged in a trench (5), whereby the lower condenser electrode (10) lies adjacent to a wall of the trench in the lower region of the trench, whilst in the upper region of the trench, a spacer layer (9), made from an insulating material, is provided adjacent to the wall of the trench. The upper electrode (18) comprises at least two layers (13, 14, 15), of which at least one is metallic, with the proviso that the upper electrode does not comprise two layers of which the lower is tungsten silicide and the upper doped polymeric silicon, whereby the layers (13, 14, 15) of the upper electrode run along the walls and the floor of the trench (5) at least as far as the upper edge of the spacer layer.

    Abstract translation: 本发明涉及一种在DRAM存储单元中的严重电容器使用和用于制造这样的Grabenkondensators.Der发明严重电容器包括下电容器电极(10),存储介质(12)和上电容器电极(18)的方法,至少部分地在 的沟槽(5)被布置,其中,在所述上严重区域被提供而邻近于所述沟槽间隔件的壁中的层(9)由绝缘材料制成的下电容器电极(10)的下严重区域与沟槽的壁相邻,和上 电极(18)的至少两个层(13,14,15),其中之一至少是金属的,与上部电极不是由两个层,其中一个是较低的硅化钨和上部掺杂多晶硅的条件,其中 上部电极未的层(13,14,15)沿着每个壁的 延伸到所述沟槽(5)的底部,以至少间隔件(9)D的上边缘上。

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