FIELD: electronic engineering. SUBSTANCE: device has rarefaction balloon with electronic projector for generating at least one electronic beam. The balloon has screen panel having luminescent screen on the internal surface with luminophore strips. Focusing uniaxial tension mask is positioned near the effective area of the screen image having a number of the first metal strips separated from each other in space. The distance between the first metal strips determines the number of slits set practically in parallel to the luminophore strips of the screen. Each of the first metal strips running across the effective area of the screen image, has practically continuous first layer of insulator on the side facing the screen. The second insulating layer is placed above the first one. The set of the second metal strips is directed practically in perpendicular to the first metal strips and is attached to them by means of the second insulating layer. EFFECT: prevent short circuit between intersecting grid conductors. 11 cl, 7 dwg
