Electron beam source formed with biologically derived tubule mat

Details Electron beam source formed with biologically derived tubule mat Electron beam source formed with biologically derived tubule mat

1990-09-28

1992-02-18

Ramsey, Kenneth J.

Electric lamp and discharge devices

Electrode and shield structures

Multipointed or serrated edge electrode

445 51, 445 35, H01J 902

Patent

active

050897420

ABSTRACT:
A field emitter array comprises an array of aligned metallic, conductive rotubules extending from a conductive base. The array is typically made by cutting a matrix comprising the aligned microtubules into sections, usually normal to the tubule alignment axis. One end surface of a section is etched or otherwise treated to remove the matrix, but not the tubules. That end surface is then provided with a conductive coating and fixed to a contact. The other end surface of that section is then also treated to remove the matrix material and leave the tubules extending from the conductive metal base. Field emitter arrays made according to the present invention provide a greater brightness than conventional field emitter arrays.

REFERENCES:
patent: 2189340 (1940-02-01), Donal
patent: 2197753 (1940-04-01), Liebmann
patent: 3562881 (1971-02-01), Barrington et al.
patent: 3746905 (1973-07-01), Shelton et al.
patent: 4344104 (1982-08-01), Habets et al.
patent: 4877501 (1989-10-01), Schmur et al.

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