公开(公告)号：US08703396B2

公开(公告)日：2014-04-22

申请号：US13710729

申请日：2012-12-11

Applicant: Micron Technology, Inc.

Inventor： Scott Sllls ,  Gurtej Sandhu ,  John Smythe ,  Ming Zhang

IPC: G03F7/26

CPC classification number: H01L21/0274 ,  G03F7/20 ,  G03F7/40 ,  H01L21/0337 ,  H01L21/0338

Abstract: Some embodiments include methods of forming patterns of openings. The methods may include forming spaced features over a substrate. The features may have tops and may have sidewalls extending downwardly from the tops. A first material may be formed along the tops and sidewalls of the features. The first material may be formed by spin-casting a conformal layer of the first material across the features, or by selective deposition along the features relative to the substrate. After the first material is formed, fill material may be provided between the features while leaving regions of the first material exposed. The exposed regions of the first material may then be selectively removed relative to both the fill material and the features to create the pattern of openings.

Abstract translation: 一些实施例包括形成开口图案的方法。 所述方法可以包括在衬底上形成间隔的特征。 特征可以具有顶部并且可以具有从顶部向下延伸的侧壁。 第一材料可以沿着特征的顶部和侧壁形成。 第一材料可以通过将特征上的第一材料的共形层旋转浇铸而形成，或通过相对于基底的特征的选择性沉积来形成。 在形成第一材料之后，可以在特征之间提供填充材料，同时使第一材料的区域暴露。 然后可以相对于填充材料和特征来选择性地去除第一材料的暴露区域以产生开口图案。