| 摘要 |
<p>A visual display dependent upon the use of thermochromic materials is formed as a thin structure on a substrate sheet (21) with a vapor deposited conductive film heater (40) applied thereto. The current is applied to the heater through parallel opposed bus bars (52, 54). A non-thermochromic image layer (22) is mounted on the substrate, with one or more thermochromic image layers (24, 26, 28) thereover. One thermochromic image layer (24) covers a first portion of a visible display area (30) of the substrate, while a second thermochromic layer (26) covers a second portion of the visible display area, with the first and second portions overlapping slightly along contiguous edges thereof. As the display is heated and cooled, the thermochromic materials of the thermochromic imager layers reach their respective transition temperatures to change state from opaque to colorless or vice-versa, or from one color to another. The visual display is mounted within an enclosure.</p> |
