From 1974 to 2017, EC technology underwent substantial changes and improvements.
Early gel-based EC technology could only produce small-area EC products. Today, Ambilight's flexible solid-state EC film technology enables the creation of large-area, curved-surface EC products, which can be applied to products of various shapes.

1st Generation: 1974 Gel-Based EC Tech

Uses viologens as the primary EC material. The liquid gel EC material is poured between two glass panels, resulting in uneven coloration and small product sizes.

2nd Generation: 1989 Inorganic Solid-State EC Tech

Uses inorganic materials (such as tungsten trioxide) as the primary EC material. The EC material is bonded to the glass surface using high-energy impact. This allows for large-area products but not large curved surfaces.

3rd Generation EC Tech：2017 Ambilight's flexible solid-state EC film technology

It utilizes new polymer EC materials and roll-to-roll coating processes. The polymer materials are evenly dispersed into a solution, which is then coated onto the film and dried at high temperatures to create the EC film.

Ambilight's flexible solid-state EC film technology uses PET flexible substrates for the first time, enabling the production of large-curved products, which makes EC products available in various sizes and shapes, offering imaginable possibilities.