| 摘要 |
<p>An electron emission element is provided with: an electron emission layer (3) that emits electrons from a surface-emitting section (9) thereof; a gate electrode layer (6) that is film-formed upon the surface of the electron emission layer (3) with a first insulator layer (5) interposed therebetween; a focusing electrode layer (8) that is film-formed upon the surface of the gate electrode layer (6) with a second insulator layer (7) interposed therebetween, and that focuses the emitted electrons; and an electron emission recess section (10) that penetrates the focusing electrode layer (8), the second insulator layer (7), the gate electrode layer (6), and the first insulator layer (5), and that is opened in recess form on the surface of the surface-emitting section (9). The layer-end of the focusing electrode layer (8) is positioned so as to be within an angle of ? ± 10° with respect to a perpendicular line extending from the center of the surface-emitting section (9), where ? is the angle between the aforementioned perpendicular line and a virtual line extending from the center of the surface-emitting section (9) so as to come in contact with the layer-end of the gate electrode layer (6).</p> |
