Standard (normal mode)
Off = frosted, on = clear. The most common and affordable variant. Ideal when the glass should usually be private, or when “fail-safe privacy” is wanted during a power failure.
Reverse PDLC
Off = clear, on = frosted. Useful for windows that are usually transparent (e.g. car windows or shop windows), because you only use power when you want privacy. More expensive and less widely available.
Coloured
Grey, bronze, blue or other tints in the film, or via coloured PVB/EVA interlayers in laminated glass. Grey also gives somewhat more light reduction.
Dimmable
With a suitable driver the voltage can be varied continuously, so the glass takes intermediate states from slightly hazy to fully frosted.
PNLC
Polymer Network Liquid Crystal: the crystal sits in a network instead of droplets. Often a higher crystal content, a whiter frosted state and a lower drive voltage.
Low-voltage & high-clarity
Newer films that switch at 24–36 V AC, or that are extra clear in the on state (low haze). Check the datasheet: specifications vary widely. [13]