Patent ID: 7550761
Filing Date: 2009-06-23
Classification: B82Y,G11C,H01L

Abstract:
1. A system that programs a passive memory cell array including a switchable diode integrated therewith, each memory cell comprising: an active layer with a state changeable based on a migration of electrons or holes therefrom when subject to an external electric field or light radiation, the state indicative of information content; a passive layer that facilitates supply of charges to the active layer, one of the active layer and the passive layer is composed of a P-type material and one of the active layer and the passive layer is composed of an N-type material; the active and passive layer arrangement form a component with two terminals that exhibits properties of a switchable forward diode element with electrical isolation characteristics, wherein decreasing voltage of the device in “ON” state to an erase voltage threshold point switches the device to “OFF” state, increasing the voltage of the device in “OFF” state to a write voltage threshold switches the device to “ON” state, and wherein a read threshold voltage is intermediate between the erase voltage threshold and write voltage threshold.