Agc Inc.

Takeaki Ono

Koki Moriya

Atsushi Inoue

Toru Ikeda

Kensuke Fujii

Yasuhiro Inoue

Kyohei Hashimoto

A glass substrate includes a first major surface, a second major surface, an end surface, a first boundary surface, a second boundary surface, and a bent portion in which the first major surface is bent so as to be concave and the second major surface is bent so as to be convex. The bent portion includes a portion in which a distance Dfrom the end surface to the first major surface in a tangential direction, extending from the end surface toward the first major surface, of the glass substrate is longer than a distance Dfrom the end surface to the second major surface in a tangential direction, extending from the end surface toward the second major surface, of the glass substrate. A difference between the distance Dand the distance Dis 50 μm or larger.

Glass substrate

A glass substrate includes: a first major surface; a second major surface that is opposite to the first major surface; an end surface interposed between the first major surface and the second major surface; a first boundary surface that is interposed between the first major surface and the end surface and connected to the end surface; and a second boundary surface that is connected to the first major surface and the first boundary surface. The second boundary surface is a convex curved surface, and the second boundary surface has a radius of curvature Rof 0.1 mm or larger and 2.0 mm or smaller.

Glass substrate and method for manufacturing same

A curved cover glass includes a plate-like glass body having a first surface, a second surface facing the first surface and at least one end face. The plate-like glass body has an average thickness of 5 mm or less. Among tangential directions on the first surface at an arbitrary point, when an X-axis is assumed to be a direction in which a first curvature radius Rin cross-section of the first surface in an XZ plane is minimum, the first surface has a curvature part in which the surface is bent in the X-axis direction at least at one point on the first surface. The first curvature radius Ris 10,000 mm or less. The curvature part includes at least one opening or concave part extending from the first surface to the second surface.

Curved cover glass and method for manufacturing same, and glass member, display device, and curved glass

A cover glass for covering a display panel of a display device, includes a front surface not to be faced to the display panel, a back surface to be faced the display panel, a front-side chamfered part which is a chamfered part on the side of the front surface, and a back-side chamfered part which is a chamfered part on the side of the back surface. The front-side chamfered part has a surface roughness Ra of more than 100 nm. The back-side chamfered part has a surface roughness Ra of 100 nm or less.

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Tokyo, Japan

Takeaki Ono