Glass plate manufacturing method and manufacturing apparatus

A manufacturing method for a glass sheet, the method comprising a breaking step of breaking the glass sheet being in a vertical orientation and having a scribe line formed on a front surface and extending in a vertical direction, to separate a first region and a second region which are adjacent to each other in a horizontal direction across the scribe line as a boundary,

• wherein the glass sheet has the second regions on both sides of the first region in the horizontal direction,
• wherein the manufacturing method further comprises a preparation step of achieving a state ready for breaking the glass sheet, the preparation step being followed by the breaking step conducted on the glass sheet in a curved state, and
• wherein, in the preparation step, an upper part of the glass sheet is held by a holding member so that the glass sheet is suspended, and a lower part of the first region is pressed from a back surface side by a pressing member.

A manufacturing apparatus for a glass sheet, the manufacturing apparatus comprising a breaking mechanism configured to break the glass sheet being in a vertical orientation and having a scribe line formed on a front surface and extending in a vertical direction, to separate a first region and a second region which are adjacent to each other in a horizontal direction across the scribe line as a boundary,

• wherein the breaking mechanism comprises a curving mechanism configured to curve the glass sheet before breaking such that the front surface is shaped into a convex curved surface in a cross section parallel to the horizontal direction.