METHODS FOR FORMING SELF-ALIGNED INTERCONNECT STRUCTURES

The present disclosure provides a semiconductor structure. The semiconductor structure includes a substrate, a first conductive feature positioned in a top portion of the substrate, a dielectric layer over the substrate, and a second conductive feature surrounded by the dielectric layer and in conta...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Chang, Shih-Ming, Liu, Ru-Gun, Ng, Hoi-Tou
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The present disclosure provides a semiconductor structure. The semiconductor structure includes a substrate, a first conductive feature positioned in a top portion of the substrate, a dielectric layer over the substrate, and a second conductive feature surrounded by the dielectric layer and in contact with the first conductive feature. The first conductive feature includes a metal layer and a reflective layer on the metal layer. The metal layer and the reflective layer have a same width. The reflective layer has a reflectivity higher than the metal layer.