| 摘要 |
<p>PURPOSE:To provide a electron emitting element which particularly does not require manufacturing technique as high in accuracy as technique required by a conical shape, enables shortcircuiting caused by damaged electrons to hardly occur, and furthermore is excellent in electrical characteristics, and high in uniformity and stability in electron emission as compared with those of the case of an edge shape. CONSTITUTION:Each electron emitting element includes, for example, an emitter 1 formed in such a way that a plurality of overhang sections 11a formed in a rectangle shape are arranged in a radial shape or a centripetal shape, and a gate 2 which is provided close to the emitter 1 to apply an electric field to the emitter 1. Two tip projections 10a each of which is projected in three dimensions with its tip end sharply pointed, are formed at the tip end of each overhang of the emitter 1, when the electric field is applied between the emitter 1 and the gate 2, electrons are convergently emitted out of each tip projection 10a.</p> |
