Patent ID: 7794298
Filing Date: 2010-09-14
Classification: H01J

Abstract:
1. A method of producing an FE type electron-emitting device provided with a gate hole aperture at an electron emission region, which includes a cathode, an electron emission film comprising a carbon layer including metal, which is disposed on the cathode and provided with the electron emission region therein, and an electron beam focusing electrode disposed on a predetermined region on the electron emission film and a gate electrode, comprising the steps of: A) fabricating a laminate structure which comprises at least an electroconductive layer forming the cathode, a carbon layer in contact with the electroconductive layer, a metal layer or a metal-containing layer in contact with the carbon layer, an insulating layer on the metal layer or metal-containing layer and a conductive layer forming the gate electrode on the insulating layer; and subsequently B) heating at least the formed carbon layer and the formed metal or metal-containing layer to diffuse metal contained in the metal layer or metal-containing layer into the carbon layer, C) removing part of the metal layer or metal-containing layer, part of the insulating layer and part of the gate electrode-conductive layer after the processing of said step (B) to form the gate hole aperture by exposing part of the carbon layer which constitutes the electron emission region, wherein part of the metal layer or metal-containing layer remained after the removal processing step (C) which surrounds the gate hole aperture constitutes the electron beam focusing electrode.