Abstract: A method of manufacturing a phosphor screen of a cathode ray tube, comprises forming a pattern having a particle-receptive adhesive surface on an inner surface of a faceplate having a peripheral wall, rotating the faceplate about an axis perpendicular to its inner surface and passing its center, and charging phosphor particles onto the inner surface of the faceplate during or before rotation thereof so as to allow the phosphor particles to slide on the inner surface of the faceplate and to attach to the particle-receptive adhesive surface. The method can form a phosphor film having a uniform and sufficient thickness without an irregularity in the amount of phosphor attached.

Abstract: A color picture tube fitted with a phosphor screen formed of a green-emitting phosphor prepared from copper and aluminum-activated zinc sulfide, a red-emitting phosphor prepared from europium-activated yttrium oxysulfide, and a blue-emitting phosphor prepared from silver-activated zinc sulfide, and wherein the copper concentration ranges between 0.01 and 0.03% by weight and the europium concentration ranges between 5.1 and 6.1% by weight.

Abstract: A method for forming a pattern of a non-light-emitting black material on the inner surface of a faceplate of a color cathode ray tube is provided, which comprises the steps of forming a photoresist layer of a photoresist containing a water-soluble bisazidocompound, a water-soluble diazocompound, and a water-soluble polymeric material, on an inner surface of a faceplate of a color cathode ray tube, selectively exposing parts of the photoresist layer using a shadow mask so as to photocure the exposed parts, developing the photoresist layer to remove unexposed parts of the photoresist layer, thereby forming dots of the photoresist, forming a film of a non-light-emitting black material on the inner surface of the faceplate including the dots, and removing the dots and the non-light-emitting black material on the dots so as to form holes in the film of the non-light-emitting black material.

Abstract: A method for forming a pattern of a non-light-emitting black material on the inner surface of a faceplate of a color cathode ray tube is provided, which comprises the steps of:forming a photoresist layer of a photoresist containing a water-soluble bisazidocompound, a water-soluble diazocompound, and a water-soluble polymeric material, on an inner surface of a faceplate of a color cathode ray tube;selectively exposing parts of the photoresist layer using a shadow mask so as to photocure the exposed parts;developing the photoresist layer to remove unexposed parts of the photoresist layer, thereby forming dots of the photoresist;forming a film of a non-light-emitting black material on the inner surface of the faceplate including the dots; andremoving the dots and the non-light-emitting black material on the dots so as to form holes in the film of the non-light-emitting black material.

Abstract: A green-emitting phosphor for a cathode-ray tube contains calcium sulfide activated by cerium and lithium. Decreases in the brightness when the tube is excited with an electron beam of high current densities or is subjected to high temperatures are eliminated.