Patent ID: 7218560
Filing Date: 2007-05-15
Classification: G11C,H01L

Abstract:
1. A semiconductor memory device comprising: a fuse element including a first terminal and a second terminal, which stores data based on whether or not it is electrically blown by a laser beam; a node in which the data is transferred; a semiconductor region provided in a substrate; and a first transistor provided between the first terminal and the node, which sets the data to the node, and includes a gate insulating film provided on the semiconductor region, a first gate electrode provided on the gate insulating film and a first source region and a first drain region provided in the semiconductor region, the first source region being connected to the first terminal via a first contact plug, the first drain region being connected to the node via a second contact plug, wherein a first distance between the first gate electrode and the first contact plug is longer than a second distance between the first gate electrode and the second contact plug.