| 摘要 |
A temperature indicator lable includes a liquid crystal material 34 color-responsive to temperature change, which is adhered to a surface portion of a transparent substrate 32 and a black background 38 adhered at least behind the liquid crystal material, with an adhesive 40 adhered behind the black background and any portion of the substrate not covered by the black background. The liquid crystal is preferably confined to a surface area smaller than the entire surface of the substrate, and a border member 36 is positioned either between the liquid crystal and the substrate or between the liquid crystal and the black background. The black background may cover the entire back surface of the substrate and alpha-numeric characters 36a be located between the substrate and the black background. The label is used with a battery charger, positioned adjacent a circuit element which heats up when current flows through battery cells placed in the charger. <IMAGE> |
