| 摘要 |
<p>Picture display device with an evacuated tube comprising, around a longitudinal axis (20), a display window (2), a conical portion (4) and a neck portion (5), said conical portion (4) being connected to an upstanding wall (15) of the display window (2). The conical portion (4) has a reduced wall thickness. The conical portion is preferably provided with a coating (17) having a layer thickness of preferably less than 50 νm. The coating preferably comprises a layer of polyurethane.</p> |
