Chemically strengthened glass and method for manufacturing chemically strengthened glass
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United States of America Patent
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Oct 25, 2022
Grant Date -
May 21, 2020
app pub date -
Jul 19, 2018
filing date -
Jul 24, 2017
priority date (Note) -
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Abstract
Provided is a tempered glass sheet, including: a compressive stress layer having a compressive stress of 20 MPa or more continuously from a main surface in a depth direction thereof; a tensile stress layer that is arranged on an inner side with respect to the compressive stress layer in a sheet thickness direction and has a tensile stress of 20 MPa or more continuously in a depth direction thereof; and a stress-neutral layer arranged between the compressive stress layer and the tensile stress layer, wherein the stress-neutral layer has a compressive stress of less than 20 MPa and/or a tensile stress of less than 20 MPa continuously in the sheet thickness direction, and has a thickness of 5.3% or more of a sheet thickness.
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