发明授权
US07109086B2 Technique for forming a spacer for a line element by using an etch stop layer deposited by a highly directional deposition technique 有权
通过使用通过高度定向沉积技术沉积的蚀刻停止层来形成用于线元件的间隔物的技术

Technique for forming a spacer for a line element by using an etch stop layer deposited by a highly directional deposition technique
摘要:
The present invention provides a technique that enables the formation of a recessed spacer element by using an anisotropically deposited etch stop layer. Accordingly, in subsequent cleaning processes, material residues of the etch stop layer may be efficiently removed from upper sidewall portions of a line element, thereby increasing the available area for a diffusion path in a subsequent silicidation process. The anisotropic deposition of the etch stop layer may be accomplished by high density plasma enhanced CVD or by directional sputter techniques.
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