Patent ID: 6828648
Filing Date: 2004-12-07
Classification: H01L

Abstract:
A semiconductor device comprising:a semiconductor substrate having an element region; a first gate insulating film of a transistor, formed on the element region of the semiconductor substrate; a first gate electrode layer of the transistor, formed on a portion of a surface of the first gate insulating film, the first gate electrode layer being smaller in a width direction of a channel of the transistor than the element region so that the surface of the first gate insulating film has a peripheral portion in the width direction of the channel of the transistor, in which the first gate electrode layer is not formed; and an element isolation film embedded in a trench formed between adjacent element regions, a surface of the element isolation film being higher than the surface of the first gate insulation film so that the element isolation film has a portion overhanging on the peripheral portion of the surface of the first gate insulating film.