Flat type cathode ray tube and color image display apparatus utilizing

Abstract

A flat type cathode ray tube comprises, in a vacuum enclosure, a plurality of vertically extending line cathodes, as many vertical scan electrodes as 1/n (n.gtoreq.2) of the number of horizontal scan lines arranged behind the line cathodes perpendicularly to the line cathodes, and modulation electrodes, planar grid electrodes, vertical deflection electrodes, horizontal deflection electrodes and a phosphor screen all of which are arranged sequentially in front of the line cathodes. The modulation electrodes are separated into a plurality of planar sections which are arranged in one-to-one correspondence with the respective line cathodes. The vertical deflection electrodes include two planar electrodes having respective electron beam passing openings provided therein which are shifted from each other. The horizontal deflection electrodes are divided into a plurality of sections in the direction of the electron beam paths. In a color display tube having a phosphor screen in which three primary color phosphors are arranged sequentially and repeatedly with black areas intervening therebetween, the timings for the electron beams to scan predetermined positions on the phosphor screen are stored, and a color video signal to be applied to the color display tube is controlled to make the electron beams correspond to the respective proper positions on the phosphor screen based on the stored timings, thereby compensating for a deviation occurring in the horizontal landing positions of the electron beams.