| 摘要 |
<p>A key sheet and a key top of novel design such that a character or a symbol cannot be recognized visually when not illuminated and can be recognized visually only when illuminated. In the key sheet (1) comprising a key top (4) for pressing a key and a key pad (23) on which a plurality of key tops are placed in a matrix and which supports them integrally through transparent adhesive (27), the key top (4) is composed of a transparent material, e.g. resin or glass, and provided with a metal thin film (half-silvered mirror) (42) on the upper or lower surfaces. Consequently, a character or a symbol cannot be recognized visually when not illuminated and can be recognized visually only when illuminated.</p> |
