METHOD OF MANUFACTURING ELECTRON EMISSION ELEMENT, ELECTRON SOURCE, AND IMAGE FORMING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a method of manufacturing an under-gate type electron emission element capable of increasing an efficiency by lowering an ineffective current flowing in a gate electrode and providing, with a high reproducibility, the electron emission element with a small beam diameter by preventing emission electrons from dispersing.

SOLUTION: An electron emission member 5 installed on the upper surface of a cathode electrode 4 is moved backward from the end part of the cathode electrode 4 on a side opposed to the gate electrode 2, and disposed by controlling the width of the a backward movement area.

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