Window film technology
Indium Tin Oxide (ITO)
Indium tin oxide (ITO) is a transparent conductive coating sometimes used in advanced window films, valued for combining optical clarity with selective infrared rejection.
ITO is best known from touchscreen and OLED display manufacturing. In window film, ITO coatings can be sputter-deposited at very thin layers to reject specific IR bands.
ITO films sit between traditional metallised and pure nano-ceramic in performance. They are signal-friendlier than aluminium-metallised films but not entirely metal-free.
In Singapore, ITO films are less common than pure nano-ceramic for automotive use. They appear more in industrial and architectural specifications where signal transparency is not critical.