| 摘要 |
A battery tester circuit in one aspect of the present invention comprises a display circuit for a battery comprising a display component for displaying information pertaining to the battery, and a display driver component for receiving power from the battery to drive the display component, wherein at least one of the components is printed on a substrate. In another aspect, a battery label comprises a label substrate for covering an outer portion of a battery, and an electric field-responsive liquid crystal display printed on an outer surface of the label substrate for displaying information pertaining to the battery. Preferably, the display driver component comprises a battery discharge level sensing circuit that continuously senses the discharge level and the display continuously displays the discharge level. The display is preferably an electric field-responsive liquid crystal display comprising either polymer liquid crystal or polymer-dispersed liquid crystal material. The display may be formed of one or more layers of active liquid crystal material. The display driver component is preferably an oscillator circuit that may also be printed on the substrate. |
