Patent ID: 6620013
Filing Date: 2003-09-16
Classification: H01J

Abstract:
In a base structure for a cathode of a flat panel display, said base structure formed with a first passivation layer said first passivation layer having a thickness, a method of forming an array of cavities for cathodic emitters and corresponding gates for said cathode, said method comprising:depositing stick chromium; disposing a blanket coat over said base structure implanting a plurality of iron tracks in said blanket coat; etching said gates; and etching said cavities for cathodic emitters corresponding to said indentations; wherein said method does not require deposition of a second passivation layer nor process steps corresponding to deposition thereof, an wherein said etching said gates and said etching said cavities for cathodic emitter corresponding to said indentations are performed by a gaseous etchant com rising a mixture of octafluorocyclobutane, carbon monoxide, argon, and nitrogen.