METHOD AND APPARATUS FOR IMPROVEMENT OF BRIGHTNESS UNIFORMITY ON A DISPLAY SCREEN

摘要

The method according to the present invention reduces the reduction of the light beam toward the edge of the display screen 10 of the display tube 1. Particularly, the reduction of the light beam changes in accordance with the increase of the free surface of the display screen 10 from the center of the display screen 10 toward the edge. Due to the present invention, such reduction of the light rays is corrected by decreasing the deflection velocity (C1; CS) from the center of the display screen 10 towards the edge.