Integrated Trench Capacitor

A deep trench capacitor and a method for providing the same in a semiconductor process are disclosed. The method includes forming a plurality of deep trenches in a first region of a semiconductor wafer, the first region having well doping of a first type. A dielectric layer is formed on a surface of...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Hu Binghua, Pendharkar Sameer P, Kawahara Hideaki
Format: Patent
Sprache:eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A deep trench capacitor and a method for providing the same in a semiconductor process are disclosed. The method includes forming a plurality of deep trenches in a first region of a semiconductor wafer, the first region having well doping of a first type. A dielectric layer is formed on a surface of the plurality of deep trenches and a doped polysilicon layer is deposited to fill the plurality of deep trenches, with the doped polysilicon being doped with a dopant of a second type. Shallow trench isolation is formed overlying the dielectric layer at an intersection of the dielectric layer with the surface of the semiconductor wafer.