Chemically Strengthened Glass Ceramic, Preparation Method Thereof, and Electronic Device
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United States of America Patent
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Sep 12, 2024
app pub date -
Jan 5, 2022
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Jan 30, 2021
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A chemically strengthened glass ceramic includes strengthening layers respectively formed on opposite sides, and each of the strengthening layers includes a potassium strengthening layer and a sodium strengthening layer sequentially located from a surface to an inside of the chemically strengthened glass ceramic. A depth of the potassium strengthening layer is 0.01 micrometers (μm) to 5 μm. A depth of the sodium strengthening layer is greater than or equal to 0.1t, where t is a thickness of the chemically strengthened glass ceramic. An average transmittance of a three-dimensional (3D) chemically strengthened glass ceramic in an optical wavelength range of 400 nanometers (nm) to 700 nm is greater than or equal to 85 percent %; a b value of a Lab color chromaticity indicator is greater than or equal to −2.0; and a haze is less than or equal to 0.25%.
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