A laser CRT includes a vacuum bulb provided with a metal flange, and a laser screen secured in the metal flange and having a laser target mounted on the side of the vacuum bulb. A high-voltage input passes through the wall of the vacuum bulb at a distance from the metal flange, the laser target being electrically insulated from the metal flange and connected to the high-voltage input through an electrically conductive element disposed inside the vacuum bulb. The laser CRT further includes two screening electrodes mounted inside the vacuum bulb in the interspace between the wall of the vacuum bulb, the metal flange, the high-voltage input and the electrically conductive element, the screening electrodes being respectively connected to the high-voltage input and to the metal flange and extending from them towards each other so as to prevent electrical discharges between the metal flange and the high-voltage input and between the metal flange and the electrically conductive element in the interspace.