| 摘要 |
<p>A disposable picture display device having a suitable substrate which carries a plurality of colour cells. Each colour cell is configured such as to exhibit a change in its external colour and/or to emit electromagnetic energy at least in the form of visible light in correlation with the application of electrical current and/or voltage to the cell. Suitable electrical connections to each colour cell are provided, the electrical connections being electrically connectable to a suitable electrical power supply and adapted to provide the colour cell with a suitable electrical current and/or voltage.</p> |
