Glass ceramic, chemically strengthened glass, and semiconductor support substrate

• Main Authors: ARAI YUSUKE, SAWAMURA SHIGEKI, LI QING, KOIKE AKIO, ONO KAZUTAKA, FURUTA HITOMI
• Format: Patent
• Language: Chinese; English
• Published: 12.12.2023
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

The invention relates to a glass ceramic, a chemically strengthened glass, and a semiconductor support substrate. The purpose of the present invention is to provide: a glass ceramic which has excellent transparency and chemical strengthening properties; and a chemically strengthened glass which has a large coefficient of thermal expansion, excellent transparency and strength, and in which fragments do not easily scatter when broken. The present invention relates to: a glass ceramic having a specific composition and having a visible light transmittance at a thickness of 0.7 mm and a haze value at a thickness of 0.7 mm within specific ranges; the present invention relates to a chemically strengthened glass having a compressive stress layer on the surface, and having a visible light transmittance when converted to a thickness of 0.7 mm, a haze value when converted to a thickness of 0.7 mm, a surface compressive stress, and a compressive stress layer depth within specific ranges, and the chemically strengthened g