ELECTRON EMISSION ELEMENT, ELECTRON SOURCE AND IMAGE FORMING DEVICE AND METHOD OF FABRICATING THE ELECTRON EMISSION ELEMENT

摘要

PROBLEM TO BE SOLVED: To provide an electron emission element, realizing an improvement in electron orbit binding and electron emission efficiency and also realizing in an inhibition of a potential drop of an upper electrode. SOLUTION: The electron emission element includes a convex structure, which has an insulating layer 3 on a substrate 1 and a high potential electrode 4 extended from the upper surface portion to the sidewall of the insulating layer 3; a low potential electrode 2; and paired electron emission portions 5a and 5b formed on the sidewall of the convex structure while intervening a gap G therebetween. The high potential electrode 4 has a buried electrode 4b having a more thick thickness than that of an upper electrode 4b on the sidewall of the convex structure.