NOVEL CONTACT ETCH STOP FILM

A system and method for improved dry etching system. According to an embodiment, the present invention provides a partially completed integrated circuit device. The partially completed integrated circuit device includes a semiconductor substrate having a surface region. The partially completed integ...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HO HOK MIN, MA CHING TIEN, SONG WOEI JI
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:A system and method for improved dry etching system. According to an embodiment, the present invention provides a partially completed integrated circuit device. The partially completed integrated circuit device includes a semiconductor substrate having a surface region. The partially completed integrated circuit device also includes an etch stop layer overlying the surface region. The etch stop layer is characterized by a thickness having at least a first thickness portion and a second thickness portion. The second thickness portion includes an etch stop surface region. The partially completed integrated circuit device additionally includes a silicon dioxide material provided within the first thickness portion of the etch stop layer. The partially completed integrated circuit device includes a silicon nitride material provided within the second thickness portion of the etch stop layer. In addition, the partially completed integrated circuit device includes a profile characterized by the silicon dioxide material in the first thickness portion changing to the silicon nitride material in the second thickness portion.