Single- and/or multi-charged gas ion beam treatment method for producing an anti-glare sapphire material
AssigneeQuertech
InventorsDenis Busardo, Frédéric Guernalec
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Abstract
A treatment method of a sapphire material, said method comprising bombardment of a surface of the sapphire material, said surface facing a medium different from the sapphire material, by a single- and/or multi-charged gas ion beam so as to produce an ion implanted layer in the sapphire material, wherein the ions are selected from ions of the elements from the list consisting of helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), boron (B), carbon (C), nitrogen (N), oxygen (O), fluorine (F), silicon (Si), phosphorus (P) and sulphur (S). Use of said method to obtain a capacitive touch panel having a high transmission in the visible range.
Claims26
A treatment method of a sapphire material, said method comprising bombardment of a surface of the sapphire material, said surface facing a medium different from the sapphire material, by a single- and/or multi-charged gas ion beam so as to produce an ion implanted layer in the sapphire material, wherein:
- the dose of implanted single- and/or multi-charged gas ions per unit of surface area is chosen in a range between 1012 ions/cm2 and 1018 ions/cm2;
- and,
- the acceleration voltage is chosen in a range between 5 kV and 1000 kV;
- the dose of implanted single- and/or multi-charged gas ions and the acceleration voltage are further chosen so that to obtain an anti-glare treatment in the visible range;
- and,
- wherein the ions of the single- and/or multi-charged gas ions are selected from ions of the elements from the list consisting of helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), boron (B), carbon (C), nitrogen (N), oxygen (O), fluorine (F), silicon (Si), phosphorus (P) and sulphur (S).
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A synthetic sapphire material comprising at least one surface with implanted ions of the elements from the list consisting of helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), boron (B), carbon (C), nitrogen (N), oxygen (O), fluorine (F), silicon (Si), phosphorus (P) and sulphur (S), wherein the reflection of an incident wave in the visible range on said surface is equal or less to 2% when measured at a 560 nm wavelength.
A capacitive touch panel having a high transmission in the visible range comprising:
- a) a front face made of a sapphire material where the front side of the sapphire material has been ion bombarded by using an ion beam wherein the ions are chosen from the ions of the atoms from the list consisting of helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), boron (B), carbon (C), nitrogen (N), oxygen (O), fluorine (F), silicon (Si), phosphorus (P) and sulphur (S);
- b) a capacitive touch detection layer,
- c) a display screen.
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Dependencies are inferred from the claim text.