| 摘要 |
PROBLEM TO BE SOLVED: To provide an image display device capable of preventing an electron source from being damaged by preventing creep discharge even when abnormal discharge is generated. SOLUTION: In this image forming device for displaying a picture image by radiating electrons emitted from an electron source of a cathode substrate on a fluorescent film of an anode substrate, intervals 3 for dividing a metal back 2 into plural portions, are formed on the metal back 2 formed on the anode substrate, where a high voltage is applied in order to accelerate the emitted electrons, and coats 9 made of conductive material for covering the intervals 3 are installed to prevent creeping discharge from being induced on the surfaces of the interval parts, even when abnormal discharge is generated.
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