Patent ID: 6340859
Filing Date: 2002-01-22
Classification: H01J

Abstract:
A cold cathode electron emission device which activates electron emission by applying an external electric field, the cold cathode electron emission device comprising:a substrate of a first conductivity type which is a base of the electron emission device; at least one active region of the first conductivity type which is formed in the upper portion of the substrate and has a predetermined alignment pattern; a contact region of a second conductivity type which is formed in the upper portion of the substrate to surround the active region, and spaced from the active region; and a gate region which is formed in the upper portion of the contact region electrically insulated from the contact region, the active region being operable to form an inversion layer of the second conductivity type disposed on and around the upper portion of the active region, upon application of a voltage between the gate region and the substrate.