Patent ID: 7847337
Filing Date: 2010-12-07
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate; a memory cell provided on the semiconductor substrate, the memory cell having a first insulating film, a first electrode layer, a second insulating film, and a second electrode layer provided on the semiconductor substrate in the order presented; a selection transistor provided on the semiconductor substrate and adjacent to the memory cell, the selection transistor having the first insulating film, the first electrode layer, the second insulating film, and the second electrode layer provided on the semiconductor substrate in the order presented, the second insulating film having an opening for the selection transistor, and the second electrode layer being electrically connected to the first electrode layer through the opening for the selection transistor; and a peripheral circuit provided on the semiconductor substrate, the peripheral circuit having the first insulating film, the first electrode layer, the second insulating film, and the second electrode layer, the second insulating film having an opening for the peripheral circuit, and the second electrode layer being electrically connected to the first electrode layer through the opening for the peripheral circuit; wherein a thickness of the first electrode layer under the second insulating film of the peripheral circuit is thicker than a thickness of the first electrode layer under the second insulating film of the selection transistor.