| 摘要 |
PROBLEM TO BE SOLVED: To provide a color image display device which has a simple and inexpensive peripheral brightness compensation device that utilizes an electronic gun of a cathode-ray tube. SOLUTION: The color image display device includes a panel which has a screen on an internal surface, a funnel which is joined to the panel, an electronic gun which is arranged at the neck section of the funnel and discharges electron beams to the screen, a deflection device which is used to display an image on the screen by deflecting the electron beams discharged from the electron gun in horizontal and vertical directions and a shadow mask which is arranged with a prescribed gap from the screen. The electronic gun includes a triode section consists of a cathode which generates electron beams, a grid electrode 4 which is arranged adjacent to the cathode and an accelerating electrode 5 which is arranged adjacent to the grid electrode. A variable voltage VG is applied to either the electrode 4 or the electrode 5 to compensate for brightness. COPYRIGHT: (C)2004,JPO
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