| 摘要 |
In manufacturing a semiconductor device, an insulator layer is formed on a semiconductor substrate. A polycrystal silicon layer is formed on an upper insulator surface of the insulator layer to have a first upper surface leaving a surrounding area of the upper insulator surface. The polycrystal silicon layer has impurities which are doped in the polycrystal silicon layer. A titanium silicide nitride layer is formed on the first upper surface. A titanium silicide layer is formed on the titanium silicide nitride layer.
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