PI-oriented film entry knowledge

As the liquid crystal molecules anchored the main material, application-oriented films from pure ionic interactions to intermolecular forces in a major development, application-oriented film, not only ionic bonding force, but the main thing is to have molecular key force, coupled with the continuous development of surface treatment technology,Character LCD Module continuous improvement of processing machines, in addition to increase production, and improve the viewing angle requirements, guide further research trial in the membrane material, the orientation film material has almost finalized.

It is surprising that, as a general guide TN-LCD using membrane materials, production processing, but in some LCD production plant harder than STN-LCD. In fact, STN-LCD products, low contrast, viewing angle is wide, but obscures some of the electrical properties of oriented films of defects. Unless there is a very serious collapse pretilt angle, oriented film defects in the STN-LCD display products, the total does not cause customers special attention. But in TN-LCD production on membrane performance oriented migration is often a direct reaction to the product's effect on the 128x32 oled.
Anchoring the liquid crystal material molecules, the pretilt angle of the alignment film in the TN-LCD and STN-LCD product is almost the same role. However, TN-LCD and STN-LCD compared, because the movement of the liquid crystal molecules in a different way, and thus the two types of product-oriented film soon diverged, STN-LCD-oriented film material used in the production, the use of more stringent environmental and purity of raw materials. In addition there are a number of manufacturers in the branched-chain molecules are used on other long-chain and secondary chain technology, so that more stable branched molecules, the pretilt angle is more consistent, but this structure due to the secondary branched intermolecular forces between the mutually exclusive , so that there is a certain branched structure similar to their own repair function, so that the performance of the machine-oriented processing deficiencies have some compensation, because in theory, mechanical precision insatiable pretilt alignment film processing accuracy requirements. This approach produced a guide film used in a low drive large ones, small area, wide line spacing on the product, its unique properties may not be reflected in production but high drive large ones, a large area and micro-line distance products, improve product yields, improve product stability and repeatability of production, and its excellent performance is the other without using this technology to produce oriented films can not be compared.
TN-LCD products with the guide film, due to the width of the viewing angle, it is impossible using the above-described structure, but due to the production cost reasons, is not necessary. And because the process improvements, machinery and equipment to improve the performance of the previous cost-oriented film material that was once affected by the process is unstable because, by the exclusion of everyone, but now because it can be in different processes under different effects, but more by a number of TN-LCD manufacturer of all ages, especially in some process adjustments automatic production line easily.