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VA: Vertical Alignment
MVA: Multi-domain Vertical Alignment
These displays offer wide viewing angles, good black depth, fast response times and good color reproduction and depth. Each pixel within a MVA type TFT consists of three sub-pixels (Red, Green and Blue).
Each of these sub-pixels is divided further into two or more sub-pixels, where the liquid crystals are randomly lined up due to the ridged polarized glass. When a charge is applied to the transistor, the crystals twist.
With these crystals being randomly placed, it allows the backlight to shine through in all different directions keeping the intended color saturation retained while giving the display a 150° viewing angle.
Premium (MVA) TFT Displays
Premium TFT Displays are a step up from our standard TN TFTs with brighter backlights and wider viewing angles. By using MVA technology, these displays offer rich blacks and have the ability to retain constant color reproduction at up to 75° angles from all sides. Premium TFT displays also have higher brightness LEDs than the standard TFT displays giving these display types a better overall picture quality for more visually demanding applications.
FFS/AFFS TFT LCD
FFS (Fringe Field Switching)
AFFS (Advanced Fringe Field Switching)
The AFFS is similar to the IPS in concept; both align the crystal molecules in a parallel-to-substrate manner, improving viewing angles. However, the AFFS is more advanced and can better optimize power consumption. Most notably, AFFS has high transmittance, meaning that less of the light energy is absorbed within the liquid crystal layer and more is transmitted towards the surface. IPS TFT LCDs typically have lower transmittances, hence the need for the brighter backlight. This transmittance difference is rooted in the AFFS’s compact, maximized active cell space beneath each pixel.
Since 2004, Hydis, who developed the AFFS, has licensed the AFFS to the Japanese company Hitachi Displays, where people are developing complicated AFFS LCD panels. Hydis has improved display properties like outdoor readability of the screen, making it even more appealing to use for its main application: mobile phones displays.
