VISUALIZZATORE A CRISTALLO LIQUIDO

According to the state of the art, LC displays are known whose torsion angle is between about 180 DEG and 300 DEG . Such displays exhibit good independence of angle of view of white impression and contrast, but they are not gray scale capable and are not free of hysteresis. For that reason, the invention presents a display (10) whose product of plate separation (d) and anisotropy of the angle of refraction is equal to or greater than 0.45 and smaller than 0.65 mu m, whose torsion angle phi is between 260 DEG and 360 DEG , whose liquid crystal molecules (18) have an approach angle theta between 7 DEG and 25 DEG , and encompass a liquid crystal material between the substrate plates (11) in which the relationship of the elastic constant K3 to the elastic constant K1 is between 1.4 and 0.6. The angular relationships ( beta , gamma ) of the polarization directions P.u, P.o with the respective orientation direction eta .u, eta .o is a function of torsion angle phi . An improvement of the contrast relationships is provided, if the relationship between the upper polarization direction P.o and the lower polarization direction P.u is smaller than 90 DEG .