Patent ID: 6952031
Filing Date: 2005-10-04
Classification: G11C,H01L

Abstract:
1. A nonvolatile semiconductor memory including a memory cell, the memory cell comprising: a semiconductor substrate including a pair of trenches formed on a surface thereof, the pair of trenches spaced apart in an X direction; a first electrode formed in each trench through the intervention of a first insulating film; a second electrode formed on the semiconductor substrate at least partially between the trenches through the intervention of a second insulating film; a third electrode extending in the X direction on the second electrode through the intervention of a third insulating film; and wherein in a pair of selective transistors each including the first electrode, one end of one transistor in a Y direction crossing the X direction is connected to a source region through intervention of the first insulating film, and one end of the other transistor in the Y direction is connected to a drain region through the intervention of the first insulating film.