| 摘要 |
PROBLEM TO BE SOLVED: To provide an electron emission element which can emit electrons with uniform distribution, even if the electron emission element has a large area.SOLUTION: An electron acceleration layer (14) is provided between a lower electrode (12) and a surface electrode (13), and at least one electrode (12 or 13) out of the lower electrode (12) and surface electrode (13) is a stripe electrode consisting of a plurality of unit electrodes (e.g., 12a-12f) arranged regularly. An electrode selection section (18) selects a unit electrode to which a voltage is applied sequentially from the plurality of unit electrodes (e.g., 12a-12f). |
