Patent ID: 7264978
Filing Date: 2007-09-04
Classification: H01J,Y10S

Abstract:
1. A method of fabricating a field emission type cold cathode, including: a first step of forming an electrically insulating layer and a gate electrode layer in this order on a substrate at least a surface of which is electrically conductive; a second step of partially removing said gate electrode layer and said electrically insulating layer such that said electrically insulating layer is formed therethrough with a first opening and said gate electrode layer is formed therethrough with a second opening almost concentric with said first opening and having a minimum diameter equal to or greater than a maximum diameter of said first opening; a third step of forming a mask on said gate electrode layer which mask is formed with a third opening above said first opening; and a fourth step of depositing a material of which an emitter layer is composed, in said first opening through said mask to form an emitter layer on a bottom and on an inner sidewall of said first opening at the maximum diameter of said first opening, wherein said mask is comprised of a metal mask.