ELECTRON GUN OF COLOR CATHODE-RAY TUBE (OPTIONS) Russian patent published in 1997 - IPC

FIELD: high-definition color cathode-ray tubes. SUBSTANCE: introduced in color cathode-ray tube that has cathode, control, accelerating, two focusing, and positive electrodes arranged along tube axis is additional cathode electrode whose voltage is synchronized with that applied to main cathode electrode inserted between control electrode and nearest focusing electrode. Additional cathode electrode may be optionally placed between first and second focusing electrodes. EFFECT: improved design. 3 cl, 15 dwg