Abstract: A method for chemical toughening a thin glass article with a thickness of at most 0.07 mm is provided. The method includes immersing the glass article into a bath of molten salt having a certain toughening temperature for a certain toughening time to form a toughened glass article; lifting the toughened glass article out of the bath of molten salt; post-toughening dwelling the toughened glass article for a certain dwelling time at a dwelling temperature that is higher than a melting point of the bath of molten salt and lower than a transition temperature (Tg) of the toughened glass article; and cooling and cleaning the toughened glass article.

Abstract: An ultrathin glass article has a thickness of less than or equal to 0.5 mm. The glass has a low TTV and a large threshold diffusivity. The glass has a working point T4 of more than 1100° C. and a linear thermal expansion coefficient CTE of more than 6*10-6/° C. in the temperature range between 25° C. and 300° C. A method for producing the article as well as the use of the article is also provided. The glass article can be chemically strengthened and forms surface compressive stress layers on surfaces and center tension layer in the center. The toughened ultrathin glass sheet is more flexible and has extraordinary thermal shock resistance which makes it easier to handle for processing.

Abstract: A method for producing a flat thin glass ribbon is provided. The method includes the steps of drawing melted glass downward away from a tank in a pulling direction while applying tensile forces which act in the pulling direction to form the thin glass ribbon having a thickness of at most 250 ?m and cooling the thin glass ribbon until a temperature of the thin glass ribbon undershoots a glass transition temperature. The tensile forces are transferred to the thin glass ribbon by at least two pairs of drawing rollers. The at least two pairs of drawing rollers are spaced apart transversely to the pulling direction and contact the thin glass ribbon on longitudinal edges of the thin glass ribbon. The thin glass ribbon only makes contact with the at least two pairs of drawing rollers at a position where the temperature of the thin glass ribbon is at most at or below 500° C.

Abstract: The invention relates to a coated glass substrate or glass ceramic substrate with resistant, multi-functional surface properties, including a combination of anti-microbial, anti-reflective and anti-fingerprint properties, or a combination of anti-microbial, anti-reflective and anti-fingerprint properties where the substrate is chemically pre-stressed, or a combination of anti-microbial and anti-reflective properties where the substrate is chemically pre-stressed. The coated glass substrate or glass ceramic substrate exhibits a unique combination of functions which are permanently present and do not exert a negative effect on each other.

Abstract: An ultrathin glass-ceramic article is provided having an article thickness (t) of equal to or less than 0.3 mm and an outer surface followed towards the inside of the article by an outer layer and a central part. The glass-ceramic has a crystal phase and an amorphous phase and the outer layer includes the crystal phase. The article has a gradient structure or a layered structure.

Abstract: A method for chemical toughening a thin glass article with a thickness of at most 0.07 mm is provided. The method includes immersing the glass article into a bath of molten salt having a certain toughening temperature for a certain toughening time to form a toughened glass article; lifting the toughened glass article out of the bath of molten salt; post-toughening dwelling the toughened glass article for a certain dwelling time at a dwelling temperature that is higher than a melting point of the bath of molten salt and lower than a transition temperature (Tg) of the toughened glass article; and cooling and cleaning the toughened glass article.

Abstract: The present invention is directed to a kind of machinable glass ceramic which can be chemically toughened. The machinable and chemically toughenable glass ceramic, which comprises, as represented by weight percentage based on the following compositions, 25-75 wt % of SiO2, 6-30 wt % of Al2O3, 0.1-30 wt % of Na2O, 0-15 wt % of K2O, 0-30 wt % of B2O3, 4-35 wt % of MgO, 0-4 wt % of CaO, 1-20 wt % of F, 0-10 wt % of ZrO2, 0.1-10 wt % of P2O5, 0-1 wt % of CeO2 and 0-1 wt % of SnO2, wherein P2O5+Na2O>3 wt %, and Al2O3+Na2O+P2O5>17 wt %. Mica crystalline phase can be formed in the glass ceramic and the glass ceramic can be chemically toughened by one step, two steps or multiple steps with depth of K-ion layer of at least 15 ?m and surface compress stress of at least 300 MPa. The profile on depth of the ion exchange layer follows the complementary error function. Hardness can be improved by at least 20% after chemical toughening. The dimension deviation ratio is less than 0.06% by ion-exchanging.

Abstract: The present disclosure relates to a protective cover including at least one transparent inorganic layer and at least one transparent adhesion layer. The transparent inorganic layer may include glass or glass ceramic. In a preferred embodiment, the inorganic layer is glass or glass ceramic. In an embodiment, the protective cover further includes a polymer layer disposed between the inorganic layer and the adhesion layer.

Abstract: A chemically toughenable or toughened glass is provided. The glass has, before chemical toughening, a thickness of at most 500 ?m. The glass, after chemical toughening, has a BACT (bendability and chemical toughenability) calculated as BACT=(CS*DoL)/(t*E) which is greater than 0.00050 and/or a NS (normalized stiffness) calculated as NS=CS/E which is greater than 0.0085, where CS is a compressive stress in MPa measured at one side of the glass after chemical toughening, DoL is a total depth of all ion-exchanged layers in ?m on one side of the glass after chemical toughening, t is a thickness of the glass in ?m after chemical toughening, and E is a E-modulus in MPa after chemical toughening.

Abstract: A thin glass article is provided that has a first face, a second face, one or more edges joining the first and second faces, and a thickness between the first and second faces, where the faces and the one or more edges together form an outer surface of the thin glass article. The thin glass article has an ion-exchanged surface layer on its outer surface. The ion-exchanged surface layer is non-uniform, wherein the non-uniform ion-exchanged surface layer has an associated compressive surface stress which varies between a minimum and a maximum value over the outer surface and/or a depth of layer which varies between a minimum and a maximum value over the outer surface. A method for producing a thin glass article and a use of a thin glass article are also provided.

Abstract: An electronic device structure and an ultra-thin glass sheet used therein. The electronic device structure includes a functional device and an ultra-thin glass above the functional device. The ultra-thin glass has a thickness of no more than 0.4 mm and also has a toughening layer, of which the thickness does not exceed 50% of the thickness of the ultra-thin glass. The ultra-thin glass has a total thickness variation of no more than 20 ?m. The ultra-thin glass used in the electronic device structure according to the present invention provides quality assurance for subsequent potential processes, such as cutting, drilling, coating, screen-printing, laminating, gluing and the like, due to the toughening layer. Moreover, the ultra-thin glass improves functionality of the electronic device structure, in particular of the device, due to its small total thickness variation.

Abstract: A chemically toughenable or toughened glass has, before chemical toughening, a thickness t of at most 1100 ?m. The glass comprises the following components: 45-75 mol-% SiO2; 10-25 mol-% Al2O3; >1-11 mol-% Li2O; 0-15 mol-% P2O5; 0-8 mol-% B2O3; and 0-5 mol-% TiO2. The average number of bridging oxygen per polyhedron (BO) calculated as 2*4?2*(cmol(O)/(cmol(Si)+cmol(Al)+cmol(B)+cmol(P)+cmol(Ti))) is higher than 3.55. Upon chemical toughening, the linear dimension variation in the unit of percentage (V1) is so low that the overall geometry variation (OGV) calculated as (DoL/t)/V1 is higher than 0.8. DoL is the total depth of all ion-exchange layers on one side of the glass and DoL is more than 1 ?m, when the glass is chemically toughened with NaNO3 only, KNO3 only or with both KNO3 and NaNO3.

Abstract: A flexible article made of glass and metal foil, as well as the production thereof, are provided. The flexible article is a multilayered structure having at least one glass layer and one metal foil layer, and the shear strength between glass and metal foil is above 1 MPa/mm2. The glass layer of said flexible article has high electrical resistivity at ambient temperature, low roughness, low thickness, good adherence to metal foil, and the glass in the glass layer has high temperature stability and low flowing temperature, and the thermal expansion coefficient (20 to 300° C.) is 1×10?6/K to 25×10?6/K. The whole article is flexible and can be bent, and the curvature radius of the bent flexible article is above 1 mm.

Abstract: An ultrathin glass article has a thickness of less than or equal to 0.5 mm. The glass has a low TTV and a large threshold diffusivity. The glass has a working point T4 of more than 1100° C. and a linear thermal expansion coefficient CTE of more than 6*10?6/° C. in the temperature range between 25° C. and 300° C. A method for producing the article as well as the use of the article is also provided. The glass article can be chemically strengthened and forms surface compressive stress layers on surfaces and center tension layer in the center. The toughened ultrathin glass sheet is more flexible and has extraordinary thermal shock resistance which makes it easier to handle for processing.

Abstract: A chemically toughened ultrathin glass is provided. The glass has a thickness less than 500 ?m and a surface compressive layer having a depth of at most 30 ?m. The toughened ultrathin glass sheet is more flexible and has extraordinary thermal shock resistance with the glass being easier to handle for processing.

Abstract: An electronic device structure and an ultra-thin glass sheet used therein. The electronic device structure includes a functional device and an ultra-thin glass above the functional device. The ultra-thin glass has a thickness of no more than 0.4 mm and also has a toughening layer, of which the thickness does not exceed 50% of the thickness of the ultra-thin glass. The ultra-thin glass has a total thickness variation of no more than 20 ?m. The ultra-thin glass used in the electronic device structure according to the present invention provides quality assurance for subsequent potential processes, such as cutting, drilling, coating, screen-printing, laminating, gluing and the like, due to the toughening layer. Moreover, the ultra-thin glass improves functionality of the electronic device structure, in particular of the device, due to its small total thickness variation.

Abstract: The present invention is directed to a kind of machinable glass ceramic which can be chemically toughened. The machinable and chemically toughenable glass ceramic, which comprises, as represented by weight percentage based on the following compositions, 25-75 wt % of SiO2, 6-30 wt % of Al2O3, 0.1-30 wt % of Na2O, 0-15 wt % of K2O, 0-30 wt % of B2O3, 4-35 wt % of MgO, 0-4 wt % of CaO, 1-20 wt % of F, 0-10 wt % of ZrO2, 0.1-10 wt % of P2O5, 0-1 wt % of CeO2 and 0-1 wt % of SnO2, wherein P2O5+Na2O>3 wt %, and Al2O3+Na2O+P2O5>17 wt %. Mica crystalline phase can be formed in the glass ceramic and the glass ceramic can be chemically toughened by one step, two steps or multiple steps with depth of K-ion layer of at least 15 ?m and surface compress stress of at least 300 MPa. The profile on depth of the ion exchange layer follows the complementary error function. Hardness can be improved by at least 20% after chemical toughening. The dimension deviation ratio is less than 0.06% by ion-exchanging.

Abstract: A thin glass article is provided that has a first face, a second face, one or more edges joining the first and second faces, and a thickness between the first and second faces, where the faces and the one or more edges together form an outer surface of the thin glass article. The thin glass article has an ion-exchanged surface layer on its outer surface. The ion-exchanged surface layer is non-uniform, wherein the non-uniform ion-exchanged surface layer has an associated compressive surface stress which varies between a minimum and a maximum value over the outer surface and/or a depth of layer which varies between a minimum and a maximum value over the outer surface. A method for producing a thin glass article and a use of a thin glass article are also provided.

Abstract: The invention relates to a coated glass substrate or glass ceramic substrate with resistant, multi-functional surface properties, including a combination of anti-microbial, anti-reflective and anti-fingerprint properties, or a combination of anti-microbial, anti-reflective and anti-fingerprint properties where the substrate is chemically pre-stressed, or a combination of anti-microbial and anti-reflective properties where the substrate is chemically pre-stressed. The coated glass substrate or glass ceramic substrate exhibits a unique combination of functions which are permanently present and do not exert a negative effect on each other.

Abstract: A flexible article made of glass and metal foil, as well as the production thereof, are provided. The flexible article is a multilayered structure having at least one glass layer and one metal foil layer, and the shear strength between glass and metal foil is above 1 MPa/mm2. The glass layer of said flexible article has high electrical resistivity at ambient temperature, low roughness, low thickness, good adherence to metal foil, and the glass in the glass layer has high temperature stability and low flowing temperature, and the thermal expansion coefficient (20 to 300° C.) is 1×10?6/K to 25×10?6/K. The whole article is flexible and can be bent, and the curvature radius of the bent flexible article is above 1 mm.