METHOD FOR FABRICATING A SEMICONDUCTOR DEVICE

A method for fabricating a semiconductor device includes providing a substrate having first to fourth regions defined thereon. First to fourth active patterns are formed in the first to fourth regions, respectively. Each of the first to fourth active patterns extends in a first horizontal direction....

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Bibliographische Detailangaben
Hauptverfasser: SEO, Myung Soo, OH, Joong Gun, KIM, Ju Youn, KIM, Jin Woo, YUN, Seul Gi
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method for fabricating a semiconductor device includes providing a substrate having first to fourth regions defined thereon. First to fourth active patterns are formed in the first to fourth regions, respectively. Each of the first to fourth active patterns extends in a first horizontal direction. A gate insulating layer is formed on each of the first to fourth active patterns. A first gate electrode is formed in the first region and includes first and fifth layers, a second gate electrode is formed in the second region and includes first, second and fifth layers, a third gate electrode is formed in the third region and includes first, third, fourth and fifth layers and a fourth gate electrode is formed in the fourth region and includes first, second, third, fourth and fifth layers.