| 摘要 |
A front substrate of an image display device has a phosphor screen and a metal back layer superposed on the phosphor screen. A plurality of electron emitting elements which emit electrons toward the phosphor screen are located on a rear substrate opposed to the front substrate. The metal back layer has a region which corresponds to the phosphor screen and is divided by gaps g 1 in a first direction and gaps g 2 in a second direction perpendicular to the first direction such that there are relations g 1 <g 2 , and rhog 1 <rhog 2 , where rhog 1 and rhog 2 are sheet resistances at the gaps g 1 and g 2 , respectively.
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