Etch stop layer in poly-metal structures

Semiconductor device manufacturing: process – Coating with electrically or thermally conductive material – Insulated gate formation

Reexamination Certificate

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C438S595000, C438S514000

Reexamination Certificate

active

07094673

ABSTRACT:
In accordance with one embodiment of the present invention, a method of forming an etch stop layer in a semiconductor structure is provided. A polysilicon layer on the semiconductor substrate and ions are implanted into the polysilicon layer to form an etch stop layer. An oxide layer can be provided between the semiconductor substrate and the polysilicon layer.

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