| 摘要 |
<p>The present invention comprises a window material comprising two liquid crystal material cells or panels opposite each other. The opaque appearing liquid crystal material is sectioned into a plurality of segments on at least one of the cells. A voltage source can be applied to one or more of these segments, across the cells, to produce a transparent appearance in the selected segments. The effect is to create a window shade appearance in the window material.</p> |
