SINGLE-CRYSTAL SCREEN Russian patent published in 1997 - IPC

FIELD: electronic engineering, in particular, screens of cathode-ray tubes of a high resolving power, can be used in cathode-ray tubes intended for use in information processing systems. SUBSTANCE: the single-crystal screen has backing 1, for instance, sapphire or glass on which light-emitting layer 2 and light-reflecting layer 3, for instance aluminium or silver, are placed in succession. Light-emitting layer 2 represents a semiconductor heterostructure, for example Al_0,5Ga_0,5As/GaAs/Al_0,5Ga_0,5As, which consists of wideband barrier layers 4 and 6 and narrowband active layer 5. EFFECT: enhanced quality. 1 dwg, 2 tbl