Abstract: A glass of the present invention includes as a glass composition, in terms of mol %, 60% to 80% of SiO2, 12% to 25% of Al2O3, 0% to 3% of B2O3, 0% to 3% of Li2O+Na2O+K2O, 5% to 25% of MgO+CaO+SrO+BaO, and 0.1% to 10% of P2O5, and has a strain point of more than 730° C.

Abstract: A carrier glass of the present invention is a carrier glass for carrying an organic resin substrate, wherein the carrier glass has a flat sheet shape having a thickness of from 0.1 mm to 1.2 mm, wherein the carrier glass has a content of iron in glass in terms of Fe2O3 of from 45 ppm by mass to 130 ppm by mass, and wherein the carrier glass has a transmittance at a wavelength of 308 nm in a thickness direction of from 71% to 81%.

Abstract: A glass substrate of the present invention has a temperature at a viscosity at high temperature of 102.5 dPa·s of 1,650° C. or less, and an estimated viscosity Log ?500 at 500° C. of 26.0 or more calculated by the equation Log ?500=0.167×Ps-0.015×Ta-0.062×Ts-18.5.

Abstract: A glass sheet of the present invention has a content of Li2O+Na2O+K2O of from 0 mol % to less than 1.0 mol % and a content of B2O3 of from 0 mol % to less than 2.0 mol % in a glass composition, has a ?-OH value of less than 0.20/mm, and has a thermal shrinkage ratio of 20 ppm or less when increased in temperature from normal temperature at a rate of 5° C./min, kept at a temperature of 500° C. for 1 hour, and decreased in temperature at a rate of 5° C./min.

Abstract: A technical object of the present invention is to devise an alkali-free glass substrate having high devitrification resistance and high heat resistance. In order to achieve the above-mentioned technical object, the alkali-free glass substrate of the present invention includes as a glass composition, in terms of mol %, 60% to 80% of SiO2, 8% to 25% of Al2O3, 0% to less than 3% of B2O3, 0% to less than 1% of Li2O+Na2O+K2O, 0% to 10% of MgO, 1% to 15% of CaO, 0% to 12% of SrO, 0% to 12% of BaO, 0% to less than 0.05% of As2O3, and 0% to less than 0.05% of Sb2O3, and has a thickness of from 0.05 mm to 0.7 mm, a strain point of 700° C. or more, and a ?-OH value of less than 0.20/mm.

Abstract: Devised is a glass which has high heat resistance and a low thermal expansion coefficient, and is excellent in productivity. A glass of the present invention includes as a glass composition, in terms of mol %, 55% to 80% of SiO2, 12% to 30% of Al2O3, 0% to 3% of B2O3, 0% to 1% of Li2O+Na2O+K2O, and 5% to 35% of MgO+CaO+SrO+BaO, and has a thermal expansion coefficient within a temperature range of from 30° C. to 380° C. of less than 40×10?7/° C.

Abstract: A glass of the present invention includes as a glass composition, in terms of mass %, 55% to 70% of SiO2, 15% to 25% of Al2O3, 1% to 5% of B2O3, 0% to 0.5% of Li2O+Na2O+K2O, 0% to 4% of MgO, 3% to 11% of CaO, 0% to 4% of SrO, and 0% to 11% of BaO, and has a strain point of more than 715° C.

Abstract: Provided are a top panel for a tactile sensation display device and a tactile sensation display device that are capable of enhancing the expressiveness of tactile sensation. A top panel 1 for a tactile sensation display device is for use in a tactile sensation display device 10 and has an internal friction of 1.0×10?2 or less.

Abstract: An alkali-free glass of the present invention includes as a glass composition, in terms of mass %, 55% to 70% of SiO2, 15% to 25% of Al2O3, 0% to 1% of B2O3, 0% to 0.5% of Li2O+Na2O+K2O, 2% to 6% of MgO, 2% to 8% of CaO, 0% to 4% of SrO, and 6% to 12% of BaO, and has a strain point of more than 720° C.

Abstract: A glass of the present invention includes as a glass composition, in terms of mol %, 60% to 80% of SiO2, 12% to 25% of Al2O3, 0% to 3% of B2O3, 0% to 3% of Li2O+Na2O+K2O, 5% to 25% of MgO+CaO+SrO+BaO, and 0.1% to 10% of P2O5, and has a strain point of more than 730° C.

Abstract: A technical object of the present invention is to devise an alkali-free glass substrate having high devitrification resistance and high heat resistance. In order to achieve the above-mentioned technical object, the alkali-free glass substrate of the present invention includes as a glass composition, in terms of mol %, 60% to 80% of SiO2, 8% to 25% of Al2O3, 0% to less than 3% of B2O3, 0% to less than 1% of Li2O+Na2O+K2O, 0% to 10% of MgO, 1% to 15% of CaO, 0% to 12% of SrO, 0% to 12% of BaO, 0% to less than 0.05% of As2O3, and 0% to less than 0.05% of Sb2O3, and has a thickness of from 0.05 mm to 0.7 mm, a strain point of 700° C. or more, and a ?-OH value of less than 0.20/mm.

Abstract: Devised is a glass which has high heat resistance and a low thermal expansion coefficient, and is excellent in productivity. A glass of the present invention includes as a glass composition, in terms of mol %, 55% to 80% of SiO2, 12% to 30% of Al2O3, 0% to 3% of B2O3, 0% to 1% of Li2O+Na2O+K2O, and 5% to 35% of MgO+CaO+SrO+BaO, and has a thermal expansion coefficient within a temperature range of from 30° C. to 380° C. of less than 40×10?7/° C.