Patent ID: 6297587
Filing Date: 2001-10-02
Classification: H01J

Abstract:
A process for the production of a cold cathode field emission device comprising the steps of;(A) forming a patterned electrode layer on a dielectric supporting substrate,(B) forming an insulating interlayer on the dielectric supporting substrate and the electrode layer,(C) forming a gate electrode comprising a first conductive layer on the insulating interlayer,(D) forming an opening portion which penetrates through at least the insulating interlayer and has a bottom portion where the electrode layer is exposed,(E) forming a side-wall of an insulating material on side walls of the opening portion, to decrease the opening portion in diameter,(F) forming a second conductive layer on at least the insulating interlayer, the gate electrode and inside of the opening portion by a physical or chemical vapor deposition method,(G) etching back the second conductive layer to form an emitter electrode having a column shape and comprising the second conductive layer in the opening portion, and(H) removing at least an upper portion of the side-wall.