| 摘要 |
A picture display apparatus for displaying a picture on a screen by causing a fluorescent material coated on the screen to emit light, comprises an input picture processor processing input picture signal from picture signal source, and outputting picture signal, a signal converter receiving picture signal from input picture processor, and dividing, into a plurality of zones, a picture corresponding to picture signal and displayed on the screen, the signal converter processing a picture signal component belonging to each of the zones such that an area ratio of a certain zone included in the zones to the screen is increased, and an area ratio of another zone included in the zones to the screen is reduced, and a shift processor varying an area ratio of each of zones at predetermined timing, and shifting boundary lines of the zones of the picture displayed on the screen.
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