| 摘要 |
<p>PURPOSE: To make the length of an electron emitting part constant to prevent decrease of brightness and its nonuniformity of an image, by forming both end parts in a row direction of a pair of element electrodes arranged on an electron source substrate so as to be covered with an insulating film. CONSTITUTION: On the surface of an insulating substrate 1, a surface conduction electron emitting element formed of an element electrode 2 provided with an electron emitting part is arranged, to obtain an electron source of an image forming device. Here is formed an insulating film 6 so as to cover both end parts in a row direction Y of a pair of element electrodes. A length in the row direction of a pair of these element electrodes is formed preferably longer than a length in a row direction of a pair of the element electrodes not covered with the insulating film by 60μm or more. Row direction wiring 6 connected to an element electrode 2, line direction wiring 8 and the insulating film 6 are preferably formed by a screen method, thus to enable a pattern position deviation to reduce to a minium limit.</p> |
