By comparing the liquid crystal azimuths of Mura area and OK area, it is concluded that there are differences between azimuths of Mura area and OK area when they are compared with the azimuths of theoretical, but the differences between azimuths of Mura area and azimuths of theoretical are larger. It is proved that the differences can be reduced by directional adjustment of TFT/CF exposure energy and optimization of specific substrate PI film thickness, Improve the taste level of products, and at the same time, improve the panel transmittance.

In order to achieve the high transmittance of the high‐definition Display/8K Display panel, the B19 factory has successfully developed a new photo alignment process‐double photo alignment technology SUVA4 and SUV AS, which is the world's first. This new technology reduces the dark lines generated by the pixel ideal alignment division patterns, thereby achieving high panel transmittance. At the same time, the SUVA4 uses the VATN method, which can achieve high panel contrast.