“Hard-coating” is always a hot topic in surface enhancement
because all designers want their product to be more robust and durable. Currently,
manufacturers have several hard-coating methods, such as through Diamond Like Carbon (DLC) &
Silicon Nitride (SiN). However, these methods have their drawbacks, and they can only be
applied on particular products due to their non-transparency and huge capital investment.
Sapphire is the second hardest transparency material in the world. Using sapphire film
directly applied as cover glass can provide excellent protection from being scratched, but
they are expensive, heavy, very brittle and difficult for mass-production.
Therefore, a HKBU (Baptist University) professor invented a unique sapphire
thin-film coating by using the PVD technique and the PVD facility is well established in the
current industry. Besides, the sapphire thin-film coating is highly transparent and does not
affect the original properties and aesthetic of the substrate after the deposition
Anti-Scratch durable coating.
Applicable on multitude of substrate materials, including flexible plastics.
High optical transmission
Cost effective for a premium product
Using conventional Physical Vapour Deposition (PVD) - thus avoiding the need for large
scale investments in production machinery