GLASS SHEET AND ITS MANUFACTURING METHOD

To reduce breakdown of a glass sheet by improving end surface strength of the glass sheet.SOLUTION: In a glass sheet provided with a pair of front and back main surfaces, and an end surface connecting each of end parts of the pair of front and back main surfaces, the end surface has a recess region made of a plurality of recess parts, among the recess parts contained in the range of arbitrary 30 μm square of the recess region, a ratio of the first recess part where a maximum value of a linear distance between two points on an apex part outer periphery becomes 0.5 μm or larger is 50% or larger, and the recess part does not reach the main front surface.SELECTED DRAWING: Figure 1 【課題】ガラス板の端面強度の向上を図り、ガラス板の破損を低減する。【解決手段】 表裏一対の主表面と、前記一対の主表面各々の端部を結ぶ端面とを備えたガラス板において、前記端面は、複数の凹部からなる凹部領域を有し、前記凹部領域の任意の３０μｍ□の範囲内に含まれる前記凹部のうち、頂部外周上の二地点間の直線距離の最大値が０．５μｍ以上となる第一凹部の割合が５０％以上であり、前記凹部領域が前記主表面に至っていないことを特徴とするガラス板。【選択図】図１