연마용 슬러리 및 이를 이용한 기판 연마 방법
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    연마용 슬러리 및 이를 이용한 기판 연마 방법 有权
    抛光浆和使用其抛光方法

    公开(公告)号:KR101257336B1

    公开(公告)日:2013-04-23

    申请号:KR1020120038419

    申请日:2012-04-13

    CPC classification number: C23F1/14 C09G1/02 C09K3/1409 H01L21/3212 H01L21/7684

    Abstract: PURPOSE: Slurry for polishing tungsten is provided to improve polishing selection ratio of a tungsten and insulative film by using titanium oxide as an abrasive. CONSTITUTION: Slurry for polishing tungsten comprises an abrasive(300) for polishing tungsten; and an oxidation accelerator for accelerating the formation of oxide. The abrasive comprises a titanium dioxide particle. A polishing method of a substrate comprises a step of arranging a substrate(100) on which a tungsten layer(120) is formed; a step of arranging a primary slurry including a titanium oxide and oxidation accelerator; and a step of polishing the tungsten layer while supplying a primary slurry on a substrate. On the upper surface of the tungsten layer, a tungsten oxide layer is formed.

    Abstract translation: 目的:提供用于抛光钨的浆料,以通过使用氧化钛作为研磨剂来改善钨和绝缘膜的抛光选择比。 构成:用于抛光钨的浆料包括用于抛光钨的磨料(300) 和用于加速氧化物形成的氧化促进剂。 研磨剂包含二氧化钛颗粒。 衬底的抛光方法包括布置其上形成有钨层(120)的衬底(100)的步骤; 布置包括氧化钛和氧化促进剂的一次浆料的步骤; 以及在基板上供给一次浆料的同时研磨钨层的步骤。 在钨层的上表面上形成氧化钨层。

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