Non-volatile, solid state bistable electrical switch

Details Non-volatile, solid state bistable electrical switch Non-volatile, solid state bistable electrical switch

1991-01-28

1994-01-11

James, Andrew J.

Active solid-state devices (e.g., transistors, solid-state diode

Bulk effect device

Bulk effect switching in amorphous material

307201, 338 13, 338 38, 361500, 257528, H01L 4500

Patent

active

052786366

ABSTRACT:
A bistable switching element is made of a material whose electrical resistance reversibly decreases in response to intercalation by positive ions. Flow of positive ions between the bistable switching element and a positive ion source is controlled by means of an electrical potential applied across a thermal switching element. The material of the thermal switching element generates heat in response to electrical current flow therethrough, which in turn causes the material to undergo a thermal phase transition from a high electrical resistance state to a low electrical resistance state as the temperature increases above a predetermined value. Application of the electrical potential in one direction renders the thermal switching element conductive to pass electron current out of the ion source. This causes positive ions to flow from the source into the bistable switching element and intercalate the same to produce a non-volatile, low resistance logic state. Application of the electrical potential in the opposite direction causes reverse current flow which de-intercalates the bistable switching element and produces a high resistance logic state.

REFERENCES:
patent: 1863253 (1930-06-01), Polin
patent: 3540006 (1970-10-01), Lauer
patent: 3908148 (1975-09-01), Lehrer
patent: 4020443 (1977-04-01), LeRoy et al.
patent: 4163982 (1979-08-01), Di Domenico, Jr. et al.
patent: 4187530 (1980-02-01), Singh et al.
patent: 4253742 (1981-03-01), Morita
patent: 4945257 (1990-07-01), Marrocco, III

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