Patent ID: 7560341
Filing Date: 2009-07-14
Classification: H01L

Abstract:
1. A manufacturing method for a semiconductor device including a semiconductor substrate and a plurality of electronic elements formed on said semiconductor substrate, each of said electronic elements having an electrode and a dielectric film interposed between said semiconductor substrate and said electrode, said dielectric films of said electronic elements having different electrical effective film thicknesses required, said manufacturing method comprising the steps of: forming said dielectric film on said semiconductor substrate; forming an amorphous semiconductor layer on said dielectric film; converting said amorphous semiconductor layer into a polycrystalline semiconductor layer so that said polycrystalline semiconductor layer has a plurality of regions having different average grain sizes so as to respectively correspond to said plurality of electronic elements; and processing said polycrystalline semiconductor layer to form a plurality of polycrystalline electrodes from said regions having said different average grain sizes, wherein, said converting step comprises the steps of: