SURFACE CONDUCTIVE ELECTRON EMISSION ELEMENT, ELECTRON SOURCE, IMAGE FORMING DEVICE USING IT AND MANUFACTURE

摘要

PURPOSE: To provide a surface conductive electron emission element as an electron source by which the large area and the high grade of an image forming device can be realized. CONSTITUTION: In a surface conductive electron emission element wherein an electron emitting part 2 is provided on a conductive thin film 3 extending between element electrodes 4, 5 formed on a base plate 1, one side element electrode 5 is alloy-reacted with the conductive thin film 3, and the other element electrode 4 dose not exhibit reactivity with the conductive thin film 3, and the electron emitting part 2 is formed near only the edge of the element electrode 5 by the alloy reaction to be generated by heat treatment. Since the shape and the position of the electron emitting part 2 can be controlled, the element having uniform electron emission characteristics can be obtained.