Liquid crystal screens are based on liquid crystal materials. Because liquid crystal is between solid and liquid, it not only has the optical properties of solid crystals, but also has liquid flow characteristics, so it can be said to be an intermediate phase. To understand the photoelectric effect produced by liquid crystals, we must explain the physical properties of liquid crystals, including its viscosity and elasticity and its polarization.
From the point of view of fluid mechanics, the viscosity and elasticity of liquid crystals can be said to be a liquid with alignment properties, which should have different effects according to different directions of the acting force. It’s like throwing a short wooden stick into the flowing river water. The short wooden stick flows with the river and looks messy at first. After a while, the long axis of all the short wooden sticks naturally becomes the direction of the river flowing. Consistent, this represents the sub-viscous flow mode, and is also a physical model with the lowest free energy of flow.
In addition, in addition to the viscous reaction, the liquid crystal also has an elastic reaction. They all have a directional effect on the applied force. Therefore, when light enters the liquid crystal material, it will inevitably proceed according to the arrangement of the liquid crystal molecules, resulting in a natural deflection phenomenon. As for the electronic structure of liquid crystal molecules, they all have a strong ability to conjugate electrons. Therefore, when liquid crystal molecules are subjected to an external electric field, they can easily be polarized to produce induced dipolarity. This is also how the liquid crystal molecules interact with each other. The source of power. The liquid crystal display used in general electronic products uses the photoelectric effect of liquid crystals, through external voltage control, and then through the refraction characteristics of liquid crystal molecules and the ability to rotate light to obtain bright and dark conditions (or known as the Optometry contrast), and then achieve the purpose of imaging.
Post time: Dec-11-2020