Patent ID: 8241081
Filing Date: 2012-08-14
Classification: H01J

Abstract:
1. A method for making a field emission cathode device, comprising the following steps: step (a), providing an insulative substrate, wherein the insulative substrate comprises a first surface and a second surface opposite to the first surface, and the insulative substrate defines one or more openings extending through from the first surface to the second surface; step (b), disposing at least one electron emitter corresponding to one of the one or more openings, wherein the at least one electron emitter comprises a fixing portion and an electron emission portion connected to the fixing portion, the fixing portion is fixed on the first surface, and the electron emission portion extends from the fixing portion into one of the one or more openings, wherein step (b) comprises the following substeps of: step (c), forming at least one cathode electrode on the first surface, wherein the fixing portion is located between the insulative substrate and the at least one cathode electrode.