Diffusion film LCD converts point light source or line light source (such as LED or CCFL) into uniform surface light source to ensure the brightness and color uniformity of LCD display. The light source of LCD motherboard with diffusion film can directly use LED lamp beads to reduce the cost of backlight source, and can also effectively cover the dots or other optical defects on the light guide plate, so that the brightness of LCD display is more uniform.

Color film LCD is a color film combined with a fully transparent LCD to present color display content. For fixed display content, it can present the effect of a TFT color screen, and can be customized in special shapes. The price is much lower than that of a TFT color screen, the power consumption is low, and the high and low temperature performance is better than TFT. Color film LCD is usually in negative display mode and is used in combination with a backlight.

DFSTN (Double-layer Super Twisted Nematic) LCD is a super twisted nematic display technology based on a double-layer compensation film. The product needs to be used in conjunction with a backlight, has the characteristics of high contrast, wide viewing angle, and is suitable for dynamic display. It is widely used in medical equipment, industrial equipment, consumer electronics and other fields.