http://www.w3.org/ns/prov#value | - In order to accomplish the aforementioned and other objects, according to one aspect of the present invention, a thin film transistor comprises: an insulating substrate; a semiconductor layer of a polycrystalline silicon formed on the insulating substrate; a gate insulator film formed so as to contact the semiconductor layer; a gate electrode formed so as to contact the gate insulator film ; an ac
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