Principle of liquid crystal pass-through

The LCD panel of the TN(twisted alignment) monochromatic LCD consists of two rather delicate sodium-free glass materials, called Substrates, sandwiched between a layer of liquid crystals that are constructed like a "sandwich". Let's focus on the mesosphere, which is the liquid crystal layer, and the liquid crystal is not simply poured into it, but into two layers that have grooves inside them, and these two layers have grooves inside them so that the liquid crystal molecules can line up neatly, because if they don't line up neatly, the light can't get through the liquid crystal. And in order to get a neat arrangement, these slots are very finely made, and the liquid crystal molecules are arranged along the slots, and the slots are very parallel, so the molecules are completely parallel.

These two interlayers are usually called upper and lower interlayers, in which the liquid crystal molecules are arranged neatly, but in different directions. The liquid crystal molecules in the upper interlayer are arranged according to the direction of the upper channel, while the liquid crystal molecules in the lower interlayer are arranged according to the direction of the lower channel. In the production process, the upper and lower grooves are cross (vertical 90 degrees), that is, the arrangement of liquid crystal molecules on the upper layer is horizontal, the arrangement of liquid crystal molecules on the lower layer is vertical, so that the liquid crystal molecules located between the upper layer and the upper layer are close to the horizontal arrangement, and those close to the lower layer are vertical arrangement.

If taken as a whole, the liquid crystals are arranged like spirals in a twist, and the key to the twist is the molecules between the layers. And set up one of the key equipment in the mezzanine, called polarization filter, the arrangement of the two pieces of filter and pervious to light Angle the same as the interlayer grooves arranged up and down, assuming that under normal circumstances the light from the top down, usually only one point of view, the light can penetrate down through the filter into the groove of the upper layers, and then through the arrangement of the liquid crystal molecules, pathway from the filter, form a complete light penetrating way. However, once these liquid crystal molecules are charged through the electrode, they are no longer arranged in their normal way due to the influence of external voltage, but become upright, so that light cannot pass through, resulting in black on the display screen. This will form a transparent (that is, no power) for white, opaque (power) for black, characters can be displayed on the screen, this is the most simple display principle.