Methods of forming integrated circuit structures using...

Semiconductor device manufacturing: process – Chemical etching – Combined with coating step

Reexamination Certificate

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Details

C438S694000, C438S696000, C438S700000, C438S508000

Reexamination Certificate

active

07541288

ABSTRACT:
Methods of forming integrated circuit devices include depositing an electrically insulating layer onto an integrated circuit substrate having integrated circuit structures thereon. This deposition step results in the formation of an electrically insulating layer having an undulating surface profile, which includes at least one peak and at least one valley adjacent to the at least one peak. A non-uniform thickening step is then performed. This non-uniform thickening step includes thickening a portion of the electrically insulating layer by redepositing portions of the electrically insulating layer from the least one peak to the at least one valley. This redeposition occurs using a sputter deposition technique that utilizes the electrically insulating layer as a sputter target.

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