Glass substrate for display cover glass and its production process

摘要

To provide a glass substrate for a display cover glass not only having excellent strength and antibacterial properties but also having a high transparency and a high visible transmittance suitable as a cover glass for a display device. A glass substrate for a display cover glass, which comprises a surface compressive stress layer and an antibacterial substance-containing layer formed on the glass substrate surface, characterized by having a ratio (T1/T2) of the transmittance T1 at a wavelength of 428 nm to the transmittance T2 at a wavelength of 650 nm of the glass substrate of at least 0.95, and a transmittance at a wavelength of 428 nm of at least 86% when the thickness of the glass substrate is from 0.1 to 3.0 mm.

主权项

1. A glass substrate for a display cover glass, which comprises a surface compressive stress layer and an antibacterial substance-containing layer on the glass substrate surface, wherein the glass substrate has a ratio (T1/T2) of the transmittance T1 at a wavelength of 428 nm to the transmittance T2 at a wavelength of 650 nm of the glass substrate of at least 0.95, and a transmittance at a wavelength of 428 nm of at least 86% when the thickness of the glass substrate is from 0.1 to 3.0 mm, and
wherein the antibacterial substance-containing layer is a silver ion diffusion layer having silver ions diffused in the glass substrate surface and the silver is present in an amount of from 0.2 to 100 μg/cm2 at a depth of 40 μm from the glass substrate surface.