| 摘要 |
PCT No. PCT/GB91/01535 Sec. 371 Date Feb. 24, 1993 Sec. 102(e) Date Feb. 24, 1993 PCT Filed Sep. 10, 1991 PCT Pub. No. WO92/04708 PCT Pub. Date Mar. 19, 1992.In an active back-plane co-ordinate addressed liquid crystal cell exhibiting an analogue optical response to the application of an analogue electric potential, refreshing is carried out in two sequential stages in order to avoid cumulative charge imbalance effects. In one stage the pixels are set to their required optical states using the appropriate applied potential differences, and in the other stage the pixels are set with the same potential differences, but applied the other way round.
|
