VA type: LCD type LCD screens have been widely used in current display products. The 16.7-meter color and large viewing angle are the most obvious technical characteristics.At present its panels are divided into two categories, one is MVA and the other is It is PVA.MVA is a tablet led by Fujitsu, which is called multi-domainverticalalignment and is a multi-quadrant vertical alignment technology.
It uses a protruding material to make the liquid crystal static instead of the traditional upright, but rests at a certain angle; when a voltage is applied, the liquid crystal molecules become horizontally backlit faster, thereby greatly reducing the display time, and because the protrusions change the liquid crystal molecules, allowing a wider viewing angle The increase in viewing angle can reach 160 degrees, and the response time is shortened to 20ms.
The PVA type is a flat panel type introduced by Samsung.It is based on the further development of Fujitsu MVA panels.It is an image vertical adjustment technology. This technology directly changes the structure of liquid crystal cells, which indicates that we can improve the efficiency and the output of MVA. Brightness and contrast are much better.
In addition, on the basis of these two types, the delayed modified PVA and P MVA two panel types are more advanced in technology development, the viewing angle of 170 degrees, and the response time is controlled at 20 milliseconds (over-acceleration to achieve 8 msgtg) And contrast can easily exceed 700: 1 level, most Samsung-made brand products, PVA LCD panels.
IPS mode: It is also a major type of LCD panel. Hitachi launched Japan in 2001. The method of switching to liquid crystal molecules is based on the angle of the plane. Using the thickness of the space and the change of the lateral electric field drive to make the maximum plane rotation angle of the liquid crystal. Molecules to increase the frictional strength of the viewing angle and effective; there are commercial products without additional compensation films, and high visual contrast.
It can reach a viewing angle of 160 degrees, and the response time can be shortened to 40ms. Therefore, the IPS LCD panel has the advantages of a large viewing angle, delicate colors, and looks more transparent, but the response time is slow and the contrast is difficult to improve. An obvious disadvantage of the panel. IPS is the first-generation IPS technology, which achieves a better viewing angle. S-IPS is the second-generation IPS technology, which introduces some new technologies to improve the grayscale of the IPS mode at a certain angle Reverse.
