US 5,844,252 A · Field emission devices having diamond field emitter, methods for making same, and methods for fabricating porous diamond

Abstract

A field emission device according to the present invention comprises a support substrate; a cathode mounted on a surface of said support substrate; a first diamond portion located on any surface of said substrate, said first diamond portion substantially having an electrical connection with said cathode; a second diamond portion located on the substrate surface on which said first diamond portion is also located, said second diamond portion including plurality of diamond protuberances; and an anode positioned spaced apart from said first and second diamond portions, wherein a space is formed between said anode and said second diamond portion.

Claims8

Dependent claims

A field emission device comprising:

a support substrate;
a base electrode disposed on a surface of said support substrate;
a first substantially undoped diamond portion disposed on a second doped diamond portion, said first diamond portion including substantially no electron-emitting protuberance;
said second diamond portion disposed on said support substrate surface, said second diamond portion including a plurality of electron-emitting protuberance upon which no first diamond portion is disposed, and being electrically coupled to said base electrode;
and
an anode positioned space apart from said first and second diamond portions.

3 more elements

Dependencies are inferred from the claim text.

Field emission devices having diamond field emitter, methods for making same, and methods for fabricating porous diamond

Life of this patent

Field emission devices having diamond field emitter, methods for making same, and methods for fabricating porous diamond

Life of this patent

Abstract

Claims8