| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce the deflection of the shape of an electron-beam spot on a luminous surface, and movement of an arrival position, etc. SOLUTION: This field emission cathode has extraction electrode parts 1c formed on insulating layers 3, emitter chips such as coned emitters 11 provided within openings 4 bored in the insulating layers 3 and the stacking parts of the extraction electrode parts 1c, and focusing electrodes 2 formed on the same plane of the insulating layer 3, together with the extraction electrode parts 1c, to surround the extraction electrode parts 1c at intervals while party having open parts. The extraction electrodes 1c are connected to a gate wiring part 1a by leader parts 1c through the open parts, and the surface of each leader part 1b is covered with an insulating film 5. The extraction electrode parts 1c are provided crosswise by three to correspond to the colors of each one picture element, and the focusing electrodes 2 are provided with four toothed parts corresponding to each picture element in such a way that the toothed parts sandwich each extraction electrode 1c.</p> |
