Glass sheet for chemical strengthening, manufacturing method of strengthened glass sheet, and glass sheet
AssigneeNippon Electric Glass Co., Ltd.
InventorsShigeyoshi Ito, Masashi Kosugi
Life of this patent
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Abstract
In a glass sheet 12 for chemical strengthening having a thickness of 0.1 mm or less, the glass sheet 12 has a warped shape as a whole or includes a warped part in a portion thereof. When the glass sheet 12 is placed on a horizontal surface with one main surface 12a facing upward, a first peak position D1 is present in a part inside a peripheral edge portion 12e of the glass sheet 12, where the first peak position D1 is a position having the highest height from the horizontal surface in the glass sheet 12, and the peripheral edge portion 12e is a part having a width of 10 mm along a peripheral edge of the glass sheet 12.
Claims15
A glass sheet having a thickness of 0.1 mm or less, wherein
- the glass sheet has a warped shape as a whole or includes a warped part in a portion thereof,
- the thickness of the glass sheet is t [mm],
- a first peak position of warpage is present in a part located further inside than a peripheral edge portion of the glass sheet, where
- the first peak position of warpage is, when a first placement form is adopted in which the glass sheet is placed on a horizontal surface with one main surface facing upward, a position having a highest height from the horizontal surface in the glass sheet, and
- the peripheral edge portion is a part having a width of 10 mm along a peripheral edge of the glass sheet.
Dependencies are inferred from the claim text.