Patent ID: 8531861

Claim:
A one time programming memory, characterized in: the one time programming memory comprises a diode ( 10 ) having a unidirectional conducting rectification characteristic and a variable-resistance memory ( 20 ) having a bipolar conversion characteristic; the rectification diode ( 10 ) having the unidirectional conducting characteristic and the variable-resistance memory ( 20 ) having the bipolar conversion characteristic are connected in series; the rectification diode ( 10 ) enables the bipolar variable-resistance memory ( 20 ) to carry out one time programming via the unidirectional conducting characteristic; and, the bipolar variable-resistance memory ( 20 ) carries out one time programming in different states via different voltages or currents, wherein the rectification function of the diode ( 10 ) having the unidirectional conducting rectification characteristic causes the resistance of the variable-resistance memory ( 20 ) having the bipolar conversion characteristic not to vary at the voltage or current of opposite polar in order to be always in a low resistance state to carry out one time programming.