Hong Kong Baptist University

Hkbu R&d Licensing Limited

Cathay Photonics Limited

Wing Yui Lam

Kok Wai Cheah

Hoi Lam Tam

Yu Wai Chan

King Fai Li

Ka Suen Lee

Guixin Li

Suet Ying Ching

Gui Xin Li

Shing Chi Tse

A method for forming a substrate with a multi-layered, flexible, and anti-scratch metal oxides protective coating being deposited onto the substrate is provided in the present invention, wherein the top most layer of the coating comprises AlOor a mixture thereof such that the top most layer acts as an anti-scratching layer. The multi-layered, flexible and anti-scratch metal oxides protective coating also retains the flexibility of the underlying substrate.

Sapphire coated substrate with a flexible, anti-scratch and multi-layer coating

A method to transfer a layer of harder thin film substrate onto a softer, flexible substrate. In particular, the present invention provides a method to deposit a layer of sapphire thin film on to a softer and flexible substrate e.g. quartz, fused silica, silicon, glass, toughened glass, PET, polymers, plastics, paper and fabrics. This combination provides the hardness of sapphire thin film to softer flexible substrates.

Sapphire thin film coated substrate

A composition of AR layer that is aimed to match the refractive index of the underlying substrate e.g. glass, chemically strengthened glass, plastics etc., so as maximum light is transmitting through it. For a device with an sapphire film for anti-scratch protection, because sapphire has a different refractive index to that of the substrate, therefore existing AR layer will not function as well as it should; not only the transmitted light is reduced in quantity, its transmitted range will be changed such that imaging or display color is compromised. Therefore an integrated AR with sapphire film with the top most AR layer as AlOwhich also acts as anti-scratching layer will eliminate this problem. This claim involves replacing one of the materials for AR layer is AlOsuch that the top most AR layer as AlOwhich also acts as anti-scratching layer.

A method to transfer a layer of harder thin film substrate onto a softer, flexible substrate. In particular, the present invention provides a method to deposit a layer of sapphire thin film on to a softer and flexible substrate e.g. PET, polymers, plastics, paper and fabrics. This combination provides the hardness of sapphire thin film to softer flexible substrates.

Sapphire thin film coated flexible substrate

A method to deposit a layer of harder thin film substrate onto a softer substrate. In particular, the present invention provides a method to deposit a layer of sapphire thin film on to a softer substrate e.g. quartz, fused silica, silicon and (toughen) glass. This combination is better than pure sapphire substrate.

Growing community of inventors

Hong Kong, China

Wing Yui Lam