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US 11,613,490 B2Granted
3D cover glass, mold for molding same, and method for manufacturing 3D cover glass
AssigneeAGC Inc.
InventorsSatoshi Kanasugi, Takanori Fukushi, Shunji Wachi
Life of this patent
Estimating the term…
Abstract
A 3D cover glass, having a polygonal shape in a plan view which corner part may comprise a rounded portion, and containing a central part being flat plane, and curved parts each with a three-dimensional curved surface having a curvature radius of 100 mm or less on peripheries of at least two of the sides of the polygonal shape, wherein the 3D cover glass shows the maximum value of retardation per 1 mm thickness being 16 nm/mm or less when measured by irradiating a light having a wavelength of 543 nm onto the central part orthogonally.
Claims18
A 3D cover glass,
- having a polygonal shape in a plan view which corner part may comprise a rounded portion,
- comprising a central part being flat plane, and peripheries having curved parts each with a three-dimensional curved surface, and
- having a double curvature,
- wherein the curved parts have the three-dimensional curved surface having a curvature radius of 100 mm or less on the peripheries of at least two of the sides of the polygonal shape,
- wherein the 3D cover glass shows the maximum value of retardation per 1 mm thickness being 16 nm/mm or less when measured by irradiating a light having a wavelength of 543 nm onto the central part orthogonally to thereby suppress generation of wrinkles in corners of the central part.
2 more elements
A 3D cover glass,
- having a polygonal shape in a plan view which corner part may comprise a rounded portion,
- comprising a central part being flat plane, and peripheries having curved parts each with a three-dimensional curved surface, and
- having a multi curvature,
- wherein the curved parts have the three-dimensional curved surface having a curvature radius of 100 mm or less on the peripheries of at least two of the sides of the polygonal shape,
- wherein the 3D cover glass shows the maximum value of retardation per 1 mm thickness being 16 nm/mm or less when measured by irradiating a light having a wavelength of 543 nm onto the central part orthogonally to thereby suppress generation of wrinkles in corners of the central part.
2 more elements
Dependencies are inferred from the claim text.