Method of depositing a sculptured copper seed layer
A method of applying a sculptured copper seed layer on a semiconductor feature surface using ion deposition sputtering. A first protective layer of material is deposited on a substrate surface using traditional sputtering or ion deposition sputtering, in combination with sufficiently low substrate b...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | A method of applying a sculptured copper seed layer on a semiconductor feature surface using ion deposition sputtering. A first protective layer of material is deposited on a substrate surface using traditional sputtering or ion deposition sputtering, in combination with sufficiently low substrate bias that a surface onto which the layer is applied is not eroded away or contaminated during deposition of the protective layer. Subsequently, a sculptured second layer of material is applied using ion deposition sputtering at an increased substrate bias, to sculpture a shape from a portion of the first protective layer of material and the second layer of depositing material. |
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