Patent ID: 7266006
Filing Date: 2007-09-04
Classification: G11C

Abstract:
1. A multiple-layer serial diode cell comprising a unit serial diode cell including: a serial diode switch comprising an insulating layer formed on a substrate and at least two or more of diode devices which are made of a silicon layer on the insulating layer and connected in series; a nonvolatile ferroelectric capacitor, which comprises a top electrode, a ferroelectric film and a bottom electrode, for reading/writing corresponding data depending on the amount of current applied from a word line or a bit line; a bit line connected to both nodes of the serial diode switch through a bit line contact node; a contact node for connecting an interval between the bottom electrode and a common node connected to two or more of the diode devices; and a word line formed on the top electrode, wherein a plurality of the unit serial diode cells are arranged in row and column directions, and the plurality of unit serial diode cells are deposited with a multiple structure which is separated by the insulating layer.