Electron emission element, electron emission device, charge device, image forming device, electron radiation curing device, light-emitting device, image display device, blower device, cooling device, and manufacturing method for electron emission element

A method for manufacturing an electron emission element which includes an electrode substrate, a thin film electrode, and an electron accelerating layer that contains at least insulating fine particles, the electron emission element emitting, from the thin film electrode, electrons which are accelerated between the electrode substrate and the thin film electrode by voltage application across the electrode substrate and the thin film electrode,

• said method comprising the steps of:
• (a) forming the electron accelerating layer on the electrode substrate;
• (b) forming the thin film electrode on the electron accelerating layer;
• and
• (c) forming openings in the thin film electrode,
• the electrode substrate having a convexoconcave surface on which the electron accelerating layer is provided, and
• in the step (c), the opening being formed above convex parts of the electrode substrate in the thin film electrode by voltage application across the substrate electrode having the convexoconcave surface and the thin film electrode.