Chalcogenide glass constant current device, and its method of fabrication and operation

摘要

The invention is related to methods and apparatus for providing a two-terminal constant current device, and its operation thereof. An aspect of the invention provides a constant current device that maintains a constant current over an applied voltage range of at least approximately 700 mV. An aspect of the invention also provides a method of changing and resetting the constant current value in a constant current device by either applying a positive potential to decrease the constant current value, or by applying a voltage more negative than the existing constant current's voltage upper limit, thereby resetting or increasing its constant current level to its original fabricated value. An aspect of the invention further provides a method of forming and converting a memory device into a constant current device. An aspect of the invention also provides a method for using a constant current device as an analog memory device.