FERROELECTRIC LIQUID CRYSTAL DISPLAY CELL

摘要

The invention relates to optoelectronics and is used in information visualization, display, storage and processing devices and systems: in two-dimensional and three-dimensional displays, for instance those of computers and televisions, in light modulators such as spacial light modulators, and in image processing and recognition devices. The display cell comprises two flat transparent plates arranged in parallel one above the other, one side of each plate having polarizers applied thereto, the other side having transparent conductive coatings connected to a source of alternating electric voltage, on the surface of which conductive coatings a preferred direction is set for providing a unidirectional orientation of liquid crystal molecules, and also comprises ferroelectric liquid crystal which is located in the space between the transparent conducting coatings of the plates and which experiences changes in the optical anisotropy thereof under the influence of an electric field, wherein the ferroelectric liquid crystal is chosen to be non-helicoidal, having properties of rotational viscosity, spontaneous polarization, and modulus of elasticity, which modulus of elasticity determines the longitudinal deformation of smectic layers, which properties maintain a certain proportional relationship relative to one another, thus providing for periodic spacial longitudinal deformations of the smectic layers and a characteristic dependence of the birefringence of the display cell on the frequency of changes in the electric field.