Activation
Liquid crystals can be aligned by both magnetic and electric fields. The strength of the required magnetic field is too high to be feasible for display applications.
One electro-optical effect with LCs requires a current through the LC-cell; all other practiced electro-optical effects only require an electric field (without current) for alignment of the LC.
| Electro-optical effects in Liquid Crystals LCs can be aligned by electric and magnetic fields |
|
| electric field effects | electro-hydrodynamic effects |
|---|---|
| the electrical field aligns the liquid crystal no current is necessary (very low power required for operation). |
current induced domain formation and scattering requires current for activation. |
| twisted nematic field effect | dynamic scattering mode, DMS |
Visual information can be generated by the processes of
|
|
Read more about this topic: LCD Classification