Method of manufacturing a cold cathode, field emission device an

Details Method of manufacturing a cold cathode, field emission device an Method of manufacturing a cold cathode, field emission device an

1989-07-13

1990-11-13

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

Electrode making

313309, 445 51, H01J 902, H01J 1924

Patent

active

049698508

ABSTRACT:
A method is provided for manufacturing a cold cathode field emission device. The method comprises the steps of:
providing a layer of anodised alumina having a plurality of elongate pores which are substantially orthogonal to major surfaces of the layer;
filling said pores completely with an electron emission material, and then removing at least a part of said layer to form a defined surface of said layer and to produce a plurality of electron emissive spikes extruding from and at an angle to said defined surface wherein a plurality of electron emissive structures are produced, each structure comprising a plurality of electron emissive spikes inclined to one another.

REFERENCES:
patent: 3466485 (1969-09-01), Arthur et al.
patent: 3671798 (1972-06-01), Lees
patent: 3745402 (1973-07-01), Shelton et al.
patent: 3746905 (1973-07-01), Shelton et al.
patent: 3783325 (1974-01-01), Shelton
patent: 3982147 (1976-09-01), Redman
patent: 4163918 (1979-08-01), Shelton

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