| 摘要 |
<p>PROBLEM TO BE SOLVED: To surely increase the number of electrons emitted to vacuum so as to improve electron emission efficiency and so as to form an image with high luminance by absorbing fluorine/fluoride onto the surface of a glass base board. SOLUTION: In a forming process, an electron emission part 5 including a crack is formed in a conductive film 4 part when electric current flows between element electrodes 2, 3. In this case, fluorine/fluoride gas is introduced with a base board temperature kept at a room temperature. In this process, fluorine/fluoride gas molecules are absorbed onto the surface of a glass base board 1. Under this condition, when voltage is applied between the element electrodes 2, 3, electron emission is started at a voltage above a threshold. Electrons reach the positive electrode side so as to be scattered, and a part of the scattered electrons collides against the surface of the glass base board 1 inside the crack to which fluorine gas molecules and the like absorbed, so that the absorbed molecules are dissociated and the glass base board 1 surface is terminated by means of fluorine atoms.</p> |
