Abstract:
A glass article includes a glass composition including mole percent (mol %) to 70 mol % of SiO2, 5 mol % to 15 mol % of Al2O3, 5 mol % to 15 mol % of Na2O, greater than 0 mol % and equal to or less than 5 mol % of K2O, 5 mol % to 15 mol % of Li2O, and greater than 0 mol % and equal to or less than 5 mol % of MgO, and satisfying Relation (1) below: 0.1≤Al2O3/(sum of Na2O,K2O, and Li2O)≤0.7 (1), where Al2O3, Na2O, K2O, and Li2O in the Relation (1) denote contents (mol %) of Al2O3, Na2O, K2O, and Li2O, respectively, in the glass composition, and the glass article has a thickness of 100 micrometers (μm) or less.
Abstract:
A glass article includes lithium aluminosilicate, includes a first surface, a second surface opposed to the first surface, a first compressive region extending from the first surface to a first compression depth, a second compressive region extending from the second surface to a second compression depth, and, a tensile region disposed between the first compression depth and the second compression depth, where a stress profile of the first compressive region has a first local minimum point at which the stress profile is convex downward and a first local maximum point at which the stress profile is convex upward, where a depth of the first local maximum point is greater than a depth of the first local minimum point, and where a stress of the first local maximum point is greater than a compressive stress of the first local minimum point.
Abstract:
A display panel may include a first display substrate, a second display substrate disposed over the first display substrate, and a sealing member bonding the first display substrate and the second display substrate. The sealing member may include a frit sealing member including an outer region and an inner region, with the inner region disposed next to an inner side of the outer region and having a first crystallization temperature lower than a second crystallization temperature of the outer region, and an organic sealing member disposed next to an inner side of the frit sealing member.
Abstract:
A glass manufacturing apparatus includes a support configured to hold a glass including a first flat portion, a second flat portion, and a curved portion connecting one side of the first flat portion and one side of the second flat portion. The support includes a first flat surface supporting the first flat portion, a second flat surface facing the first flat surface and supporting the second flat portion, and a curved surface connecting the flat surface to the second flat surface and supporting the curved portion.
Abstract:
An apparatus for manufacturing a glass article includes a plurality of side portions spaced apart from each other; and a plurality of heat supply portions disposed on each of the side portions; where the side portions adjacent to each other are disposed to face each other, and a glass is allowed to be disposed between the adjacent side portions.
Abstract:
A method of manufacturing a window for a display apparatus according to the present invention includes: providing, on a stage, a substrate including a foldable part bending around a folding axis extending in a first direction, and forming a groove on the foldable part. The forming the groove includes: grinding the foldable part by using a first machining wheel; grinding the foldable part by using a second machining wheel; and machining the foldable part by using a polishing wheel. The groove has at least one radius of curvature. The first machining wheel includes first abrasive grains, and the second machining wheel includes second abrasive grains less in size than the first abrasive grains.
Abstract:
Disclosed is a substrate for a curved display device, including: an alkali-free glass substrate that does not contain an alkali metal oxide; and an inorganic coating part formed on at least one of a display surface and a lateral surface of the alkali-free glass substrate, and having a larger value of a coefficient of thermal expansion than that of the glass substrate.
Abstract:
A glass composition, a glass article prepared therefrom, and a display device are provided. The glass article includes as a glass composition: 59 to 69 mol % of SiO2, 8 to 18 mol % of Al2O3, greater than 0 to 5 mol % of Na2O, greater than 0 to 5 mol % of ZnO, and greater than 0 to 10 mol % of B2O3, and glass article further includes 10 to 20 mol % of CaO or 15 to 25 mol % of MgO, satisfies Relation 1 below, and has a thickness of 100 μm or less,
4.5≤Al2O3/Na2O≤5.5 (Relation 1),
where, in Relation 1, Al2O3 and Na2O represent contents (mol %) of corresponding components, respectively, in the glass composition.
Abstract:
A glass article has a thickness in a range of 20 μm to 100 μm and a third elastic energy index of 1.8 MPa2/m0.5 or greater, where the third elastic energy index is defined by Equation 2-3: Third elastic energy index (Eelas3)=GIC×(1/B)×Eabs (Equation 2-3), where GIC is a fracture energy index defined by Equation 1: Fracture energy index (GIC)=(KIC2×(1−v2))/E (Equation 1), where KIC is fracture toughness, v is Poisson's ratio, and E is Young's modulus, B is brittleness (fracture toughness KIC/hardness Hv), and Eabs is absorption energy defined by Equation A: Absorption energy (Eabs)=σ2×(1−v)/E (Equation A), where σ is surface strength defined by Equation B: Surface strength (σ)=(E×α×ρ2)/(1−v) (Equation B), where E is Young's modulus, α is a thermal expansion coefficient, ρ is density, and v is Poisson's ratio.
Abstract:
A glass article prepared from a glass composition includes SiO2 in a range of about 48 mol % to about 57 mol %, Al2O3 in a range of about 10 mol % to about 20 mol %, Na2O in a range of about 8 mol % to about 18 mol %, K2O greater than 0 mol % and equal to or less than about 10 mol %, B2O3 in a range of about 10 mol % to about 17 mol %, and CaO or MgO greater than 0 mol % and equal to or less than about 7 mol % based on a total weight. A ration of Al2O3 and Na2O+K2O is in a range of about 0.7 to about 1.3, and a thickness of the glass article is equal to or less than about 100 μm.