REDUCTION OF IMPRINT IN FERROELECTRIC DEVICES USING DEPOLYING TECHNIQUE

摘要

PURPOSE: A method using a depolying technique is provided to reduce or eliminate imprint effects in ferroelectric device without exposing the ferroelectric device to excessive temperatures. CONSTITUTION: A method for reducing imprint in a ferroelectric device includes the steps of: applying a signal having a bipolar pulse shape for a predetermined time to the ferroelectric device(100) and decreasing the signal amplitude gradually in predetermined intervals of time and amplitude. Preferably, the bipolar shape signal is a sinusoidal wave, a square wave, or a sawtooth wave and the ferroelectric device(100) is a capacitor of a memory cell in a computer. Also provided is an apparatus for reducing imprint in a ferroelectric device.