| 摘要 |
<p>An indicator device (14) having no moving parts includes a layered assembly (26) visible through an aperture (28) in a wall member (30), and a light source (38) positioned behind the layered assembly (26). The layered assembly (26) comprises a first transparent sheet (32) of a first colour, a second transparent sheet (34) of a second colour, and an LCD panel (36) interposed between the two sheets (32,34). The LCD panel (36) is adapted to be rendered transparent when energized and to be rendered opaque when de-energized. When the LCD panel (36) and the light source (38) are de-energized, the first colour (e.g. red) is seen through the aperture (28), and when the LCD panel (36) and the light source (38) are energized a third colour (e.g. green) is seen through the aperture (28). The indicator device (14) may be used, for example, as an in-service indicator of an ATM. <IMAGE></p> |
