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Sidewall formation for sidewall patterning of sub 100 nm structures

机译:用于亚100 nm结构侧壁图案化的侧壁形成

摘要

In one embodiment, the present invention relates to a method of forming a conductive structure having a width of about 100 nm or less, involving the steps of providing a substrate having a conductive film; patterning a photoresist over a first portion of the conductive film wherein a second portion of the conductive film is exposed, the photoresist having at least one sidewall over the conductive film; depositing a sidewall film over the conductive film and the photoresist, the sidewall film having a vertical portion adjacent the sidewall of the photoresist and a horizontal portion in areas not adjacent the sidewall of the photoresist; removing the horizontal portion of the sidewall film exposing a third portion of the conductive film; removing the photoresist exposing a fourth portion of the conductive film; and etching the third portion and the fourth portion of the conductive film thereby providing the conductive structure having a width of about 100 nm or less underlying the vertical portion of the sidewall film.
机译:在一个实施例中,本发明涉及一种形成具有大约100nm或更小的宽度的导电结构的方法,该方法包括以下步骤:提供具有导电膜的基板。在导电膜的第一部分上构图光刻胶,其中导电膜的第二部分被暴露,该光刻胶在导电膜上具有至少一个侧壁;在导电膜和光致抗蚀剂上沉积侧壁膜,该侧壁膜具有与光致抗蚀剂的侧壁相邻的垂直部分和在不邻近光致抗蚀剂的侧壁的区域中的水平部分;去除侧壁膜的水平部分,露出导电膜的第三部分;去除暴露出导电膜的第四部分的光致抗蚀剂;蚀刻导电膜的第三部分和第四部分,从而提供在侧壁膜的垂直部分下面具有约100nm或更小的宽度的导电结构。

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