Patent ID: 6753196
Filing Date: 2004-06-22
Classification: B82Y,H01J

Abstract:
A method of manufacturing a field emission type electron source having an electrically conductive substrate, a strong field drift layer formed on one surface of the electrically conductive substrate, and an electrically conductive thin film formed on the strong field drift layer, wherein a voltage is applied so that the electrically conductive thin film becomes positive in polarity relevant to the electrically conductive substrate, whereby electrons injected from the electrically conductive substrate into the strong field drift layer drift within the strong field drift layer and are emitted through the electrically conductive thin film, said method comprising:an anodic oxidation processing step of, when the strong field drift layer is formed, forming a porous semiconductor layer which contains a semiconductor nanocrystal by anodic oxidation; and an insulating film forming step of forming an insulating film on the surface of each semiconductor nanocrystal, wherein, in said anodic oxidation processing step, anodic oxidation processing is carried out while emitting light which primarily contains a wavelength in a visible light region relevant to a semiconductor layer.