FERROELECTRIC LIQUID CRYSTAL DISPLAY CELL Russian patent published in 2014 - IPC G02F1/137 G09G3/36 

FIELD: physics.

SUBSTANCE: ferroelectric liquid crystal display cell has two flat transparent plates arranged in parallel one above the other, on one side of which there are polaroids and on the other - transparent current-conducting coatings which are connected to an alternating-sign voltage source, on the surface of which a direction is selected for providing uniform orientation of liquid crystal molecules, a ferroelectric liquid crystal situated in the space between the transparent current-conducting coatings of the plates and which varies its optical anisotropy under the effect of an electric field. The crystal is non-helicoidal, and the values of rotational viscosity, spontaneous polarisation and modulus of elasticity, which determines deformation along smectic layers, are in a ratio to each other which provides periodic spatial deformations along the smectic layers and a characteristic relationship between birefringence of the display cell and alternating frequency of the electric field.

EFFECT: continuous anhysteretic modulation characteristic at light modulation frequencies of several kilohertz while controlling alternating-sign pulses, reduced power consumption, improved optical contrast.

5 dwg