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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Bibliographische Detailangaben
Hauptverfasser: Chiang, Tony, Yao, Gongda, Ding, Peijun, Chen, Fusen E, Chin, Barry L, Kohara, Gene Y, Xu, Zheng, Zhang, Hong
Format: Patent
Sprache:eng
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Beschreibung
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.