Field emission device

Details Field emission device Field emission device

1985-11-15

1987-05-05

Chatmon, Saxfield

Electric lamp and discharge devices

Electrode and shield structures

Point source cathodes

75230, 75235, 313346R, 313310, 313633, H01J 116, H01J 1910

Patent

active

046635599

ABSTRACT:
A device is disclosed which produces high current, low noise, low lateral energy, stochastic electron emission from a multiplicity of insulative particles subjected to a field. The insulative particles are in and of a surface thickness comprised of a random mixture of insulative and conductive particles in ohmic contact. Emission is achieved at applied potentials of about 5 volts which produce a field sufficient to emit electron currents of nanoamperes to milliamperes. Single devices or arrays of devices may be batch fabricated. Each device has an imtegral, implicity self-aligned electron optic system comprising means for modulating, focusing and deflecting the formed current beam, and means shielding the device from ambient magnetic fields.

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