Method of forming a doped field emitter array

Details Method of forming a doped field emitter array Method of forming a doped field emitter array

1995-10-16

1998-06-30

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

Electrode making

438 20, H01J 902

Patent

active

057724881

ABSTRACT:
According to one aspect of the invention, a field emission display is provided comprising: an anode; a phosphor screen located on the anode; a cathode; an evacuated space between the anode and the cathode; an emitter located on the cathode opposite the phosphor; wherein the emitter comprises an electropositive element both in a body of the emitter and on a surface of the emitter. According to another aspect of the invention a process for manufacturing an FED is provided comprising the steps of: forming an emitter comprising an electropositive element in the body of the tip; positioning the emitter in opposing relation to a phosphor display screen; creating an evacuated space between the emitter tip and the phosphor display screen; and causing the electropositive element to migrate to the an emission surface of the emitter.

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