| 摘要 |
A segmented display system (10) comprises a cathode plate (30) with slots (38) therein aligned with the segments (12, 14, 16, 18, 20, 22, 24) of a traditional numerical display pattern. Slots (38) are lined with a metallic lining (42) and act as cathode cells selectively energisable by external contacts (46-56). Overlying the surface of the cathode plate (30) is a display panel (80) transparent to UV-radiation and carrying on its surface segments of fluorescent material (78) aligned with the cathode cells and covered by a transparent protective film (88). The cathode plate is backed by an anode plate (62) spaced therefrom to form a hermetically sealed chamber (64) containing an inert gas. Ultraviolet radiation generated within the selectively energised cathode cells by application of a potential across the anode and the selected cell lining impinges on the corresponding fluorescent segment to activate the display. |
