FLAT LUMINESCENT SCREEN, PROCESS OF MANUFACTURE OF FLAT LUMINESCENT SCREEN AND TECHNIQUE OF GENERATION OF IMAGE ON FLAT LUMINESCENT SCREEN Russian patent published in 2000 - IPC

FIELD: development of luminescent screens. SUBSTANCE: flat luminescent screen has backing, matrix of current-conducting elements in the form of lines and columns positioned in screen. Emitter is manufactured in the form of assemblage of micropeaks of conductive material placed across sections of crossing of lines and columns and having height h and diameter d. Each section of crossing of lines and columns is image cell housing at least one micropeak. Luminophor film carrying activating agents is chosen from group composed of ZnS with activating agent chosen from group made of Cu, Al, Ag, Mn or SrSrGa₂S₄ with activating agent Eu or ZnGd₂O₄ with activating agent Cy, ZnS, SrGa₂S₄ and ZnGd₂O₄ are color triad of luminophors. Anode coming in the form of current-conducting film produced from optically clear material is put on luminophor film with activating agents. Semiconductor film is placed on surface of emitter on vertexes of micropeaks and is designed to heat up electrons. Film thickness is not less than half-height of micropeak. Luminophor film with activating agents located on surface of semiconductor film has thickness determined by length of relaxation of maximum energy W max of hot electrons and contacts anode on its other side. Dielectric material is placed in regions between micropeaks. Distances between lines and columns lie in limits from diameter d of micropeak to height h of micropeak. Technical objective of invention is manufacture of flat luminescent screen in which semiconductor films are positioned on micropeaks of emitter surface to make it possible to raise resolving power of image, to increase its brightness, to decrease mass and thickness of screen, to simplify its design, to produce flexible, rolling up screen. EFFECT: simplified design, increased brightness, decreased mass and thickness of screen. 23 cl, 11 dwg