| 摘要 |
<p>A co-ordinate addressed bistable liquid crystal cell is switchable between its two stable states by oppositely directed electric potential differences applied across the liquid crystal layer thickness between a front-plane electrode and the members of a co-ordinate address array of electrode pads of an active back-plane. Refresh data is compared with currently displayed data so that only those pixels scheduled for switching are subjected to switching stimuli. The electrode pad of a pixel scheduled for switching is taken from a potential of the front-plane electrode to a different potential by connection to a voltage source. It is then electrically isolated from that voltage source for a further period before its potential is restored to that of the front-plane electrode. This enables rows of pixels to be addressed with a line address time considerably shorter than the time necessary to effect full switching.</p> |
