| 摘要 |
PROBLEM TO BE SOLVED: To reduce color drift or distortion at an end of an image display region by providing a support frame that supports between a front surface plate and a rear surface plate and has, on its surface, a second conductive film electrically connected with a first conductive film included in the front surface plate. SOLUTION: A first conductive film 10 is formed from the periphery of an image forming member 6 on a front surface plate 7 to a joint portion with a support frame 9, the first conductive film 10 is electrically connected with the image forming member 6. A second conductive film 11 is formed on the support frame 9, from a joint portion with the front surface plate 7 to a joint portion with a rear surface plate 4. The first conductive film 10 is electrically connected with the second conductive film 11 at their joint portion. By considering structure parameters around the support frame 9 and, if necessary, setting sheet resistances of the first conductive film 10 and the second conductive film 11, voltages on the surface of the support frame 9 and around the image display member 6 on the front surface plate 7 are prevented from un- stabilizing during image display. Thus, the orbit of the electron beams emitted from an electron emitting element corresponding to the end of an image display region is not disturbed.
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