| 摘要 |
The display device comprises at least one compartment (30, 30', 30'') which contains an ionizable gas (33). Walls of the compartments (30, 30', 30'') are provided with electrodes (31, 32) for selectively ionizing the gas (33), during operation, by means of a direct current. The display device is characterized in that the walls of the compartment (30, 30', 30'') are provided with a layer (20) of a secondary electron-emitting material, the electrons (31, 32) remaining completely or partly uncovered. Preferably, the thickness of the layer (20) exceeds 20 nm, and the secondary electron-emitting material comprises a material of the group formed by magnesium oxide, chromium oxide, silicon nitride and yttrium oxide. Preferably, the display device further comprises an electro-optical layer (35), and a further layer (36) of a dielectric material is situated between the compartment (30, 30', 30'') and the electro-optical layer (35), which further layer (36) is provided with the secondary electro-emitting layer (21) on a side facing away from the electro-optical layer (35).
|
