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Samsung working on new screen

Samsung have filed a patent for an anti-fingerprint smartphone screen.

The technology giant are reportedly working on a special self-healing screen which can "fix" itself as well as have "anti-fingerprinting composition" properties.

They wrote in the patent: "Provided is an anti-fingerprinting composition and a film including the anti-fingerprinting composition having a low friction coefficient with excellent slip properties, excellent water repellency, and high hardness and transparency. The film it may be self-healed after being scratched and has excellent flexibility and thus may be applied to a flexible device and the like. A laminate including the film and a device including the same are provided.

"In an embodiment, an anti-fingerprinting composition having a self-healing property includes a polyrotaxane, a polyhedral silsesquioxane, and a fluorinated (meth)acryl compound. The polyrotaxane may be a compound including a cyclic molecule, a linear molecule penetrating a ring of the cyclic molecule, and a capping group at each terminal end of the linear molecule."

The technology firm are keen to develop the "self-healing protective films" available already on the market and make them resist fingerprints too.

They added: "Many commercially available self-healing protective films have a high tacky (sticky) property and a high coefficient of friction relative to a surface on which they are disposed, so that the self-healing protective films have unfavorable slip properties and insufficient self-healing characteristics. An anti-fingerprinting film is a relatively brittle coating film having a three-dimensional cross-linked structure, and as a result, has a deteriorated flexibility.

"A scratch is formed in the anti-fingerprinting film when a polymer chain forming the film is cut due to an external stress. Such anti-fingerprinting films rarely demonstrate self-healing characteristics after being scratched, so their application to a device having self-healing characteristics is limited. Thus, it would be advantageous to provide an anti-fingerprinting film having good slip properties instead of the self-healing protective film, or which may be additionally formed on the surface of the self-healing protective film. As used herein, the term "anti-fingerprinting" refers to a material prevents the deposition of fingerprints on a surface."

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