Patent ID: 7399214
Filing Date: 2008-07-15
Classification: B82Y,H01J

Abstract:
1. A method of manufacturing an electron emission source, comprising the steps of: forming a cathode electrode on a substrate; forming a carbon nanotube layer on said cathode electrode; forming an insulating layer to cover said cathode electrode and said carbon nanotube layer; and forming an opening in said insulating layer to expose said carbon nanotube layer without exposing said cathode electrode, by using dry etching, wherein the step of said dry etching includes first dry etching step of forming a hole to such a depth as not exposing said carbon nanotube layer under a condition that a pressure in a reaction chamber is set to a first predetermined value, and second dry etching step of removing a bottom surface portion of said hole to expose said carbon nanotube layer under a condition that the pressure in the reaction chamber is set to a second predetermined value, the first predetermined value begin smaller than the second predetermined value.