Patent ID: 6956767

Claim:
A nonvolatile memory device using a serial diode cell, comprising: a plurality of serial diode cell arrays each having a hierarchical bit line structure including a main bit line and a sub bit line and each including a sub cell array having a plurality of unit serial diode cells arranged in row and column directions between a word line and the sub bit line; a plurality of word line driving units for selectively driving the word lines of the plurality of serial diode cell arrays; and a plurality of sense amplifiers for sensing and amplifying data applied from the plurality of serial diode cell arrays, wherein each of the plurality of the serial diode cells comprises a nonvolatile ferroelectric capacitor whose one terminal is connected to the word line, and a serial diode switch which includes at least two or more diode devices successively connected in series between the sub bit line and the other terminal of the nonvolatile ferroelectric capacitor and is selectively switched depending on a voltage applied to the word line and the sub bit line.