Cathode structure for field emission device and method of fabricating the same

A method of fabricating a cathode for a field emission device using a particulate emitter, comprising the steps of:

• producing an emitting compound using a particulate emitter;
• forming a sacrifice layer on a cathode electrode and then patterning said sacrifice layer;
• coating said emitting compound on said patterned sacrifice layer;
• and
• selectively patterning said emitting compound by lift-off process.

A method of fabricating a cathode for a triode-type field emission device using a particulate emitter, said cathode including a base plate, the method comprising the steps of:

• forming a cathode electrode on said base plate;
• forming an insulator;
• forming a gate electrode;
• forming a sacrifice layer;
• patterning said sacrifice layer;
• coating an emitting compound on said cathode electrode and said sacrificial layer;
• and
• selectively patterning said emitting compound.

A cathode for a triode-type field emission device using a particulate emitter,

• wherein said cathode includes a base plate,
• a cathode electrode is formed on said base plate,
• an insulator and a gate electrode are sequentially formed on said cathode electrode,
• an emitting compound formed by a patterning process situates on said cathode electrode which is partially exposed portion.