LCD display screens emit light, and as we all know, this is a type of liquid crystal material that plays a crucial role. Today, the editor will share with you about the photoelectric effect of liquid crystals in LCD displays.
Liquid crystal is the fundamental material of liquid crystal display devices. In order to meet the various performance parameters requirements of liquid crystal display devices and adapt to the process requirements of liquid crystal display devices, it is necessary for liquid crystal materials to have a wide range of performance parameters, and no single liquid crystal monomer material can meet all these requirements. So, practical liquid crystal materials are all mixed liquid crystal materials. Sometimes, in order to meet certain special requirements, it is even necessary to mix and add certain non liquid crystal additives. In the liquid crystal used for dynamic scattering devices, some ionic materials need to be added, and in the liquid crystal used for guest host effect display devices, some dichroic dyes need to be added.
The photoelectric effect of liquid crystal refers to a light modulation phenomenon in which the arrangement of molecules in liquid crystal changes under the action of an external electric field, resulting in changes in the photochemical properties of the liquid crystal cell. Due to the dielectric anisotropy and conductivity anisotropy of liquid crystals, an external electric field can cause changes in the arrangement of liquid crystal molecules and optical modulation. At the same time, due to birefringence, special optical properties such as optical rotation, optical interference, and light scattering can be displayed.
The general research on the photoelectric effects of liquid crystals includes: dynamic scattering effect, guest host effect, electrically controlled birefringence effect, phase transition effect, thermal optical effect, distortion effect, super distortion effect, and ferroelectric effect.
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