A glass roof shingle includes a shingle cover layer made of a glass. A shingle base layer is disposed underneath the shingle cover layer. The shingle base layer and shingle cover layer define a cavity. A seal area formed between the shingle base layer and shingle cover layer and around the cavity controls ingress of moisture into the cavity. A photovoltaic module may be disposed within the cavity.

A laminate includes at least two sheets, one of the at least two sheets including a colored glass and another of the at least two sheets being a further sheet. The sheet including the colored glass in a wavelength range from 875 nm to 1600 nm has an internal transmittance at at least one wavelength of at least 75%. A connecting layer is disposed between the at least two sheets. The laminate has a thickness of at most 6 mm. The laminate in a wavelength range from 400 to 700 nm has an average transmittance .sub.avg,400 nm to 700 nm of less than 15% where .sub.avg,400 nm to 700 nm is defined as

[00001]${}_{avg,400\mathrm{nm}-700\mathrm{nm}}=\frac{{}_{400\mathrm{nm}}^{700\mathrm{nm}}d}{700\mathrm{nm}-400\mathrm{nm}}$

and/or at each wavelength has a spectral transmittance of less than 15%.

A multilayer glass stack for a vehicle windshield with improved durability is described. The multilayer glass stack includes an external-facing glass layer, an internal-facing glass layer, and an adhesive interlayer positioned between the external-facing and internal-facing glass layers. The external-facing glass layer may include borosilicate and/or does not include soda lime glass. Methods of manufacturing the multilayer glass stack are also described.

A laminated glazing with an optically transparent area including at least one inner and one outer glass sheet, each having an internal and an external face, and being high level of near infrared radiation transmission glass sheets, at least one thermoplastic interlayer to laminate the at least the inner and the outer glass sheets, including at least a first zone and a second zone, the second zone being delimited by the optically transparent area, and at least one optical sensor device provided on the inner face of the inner pane integrated in the optically transparent area. The thermoplastic interlayer further includes a second zone delimited by the optically transparent area where the laminated glazing has a value of infrared transmission TIR1 higher than the value of infrared transmission TIR2 of the first zone for the working wavelengths of the optical device.

A laminate glass-ceramic article is provided that includes: a core glass layer having a first coefficient of thermal expansion (CTE); and a plurality of clad glass-ceramic layers, each having a CTE that is lower than or equal to the first CTE of the core glass layer. A first of the clad glass-ceramic layers is laminated to a first surface of core glass layer and a second of the clad glass-ceramic layers is laminated to a second surface of the core glass layer. Further, a total thickness of the plurality of clad glass-ceramic layers is from about 0.05 mm to about 0.5 mm. In addition, each of the glass-ceramic layers includes: an alumino-boro-silicate glass, 0 mol %MoO.sub.315 mol %, and 0 mol %WO.sub.315 mol %, the WO.sub.3 (mol %) plus the MoO.sub.3 (mol %) is from 0.7 mol % to 19 mol %.

A strengthened cover glass or glass-ceramic sheet or article as well as processes and systems for making the strengthened glass or glass-ceramic sheet or article is provided for use in consumer electronic devices. The process comprises cooling the cover glass sheet by non-contact thermal conduction for sufficiently long to fix a surface compression and central tension of the sheet. The process results in thermally strengthened cover glass sheets for use in or on consumer electronic products.

Embodiments of a laminate including a first curved glass substrate comprising a first viscosity (poises) at a temperature of 630 C.; a second curved glass substrate comprising a second viscosity that is greater than the first viscosity at a temperature of 630 C.; and an interlayer disposed between the first curved glass substrate and the second curved glass substrate, are disclosed. In one or more embodiments, the first curved glass substrate exhibits a first sag depth that is within 10% of a second sag depth of the second curved glass substrate. In one or more embodiments, the first glass substrate and the second glass substrate exhibit a shape deviation therebetween of about 5 mm or less as measured by an optical three-dimensional scanner or exhibit minimal optical distortion. Embodiments of vehicles including such laminates and methods for making such laminates are also disclosed.

Embodiments of a laminate including a first curved glass substrate comprising a first viscosity (poises) at a temperature of 630 C.; a second curved glass substrate comprising a second viscosity that is greater than the first viscosity at a temperature of 630 C.; and an interlayer disposed between the first curved glass substrate and the second curved glass substrate, are disclosed. In one or more embodiments, the first curved glass substrate exhibits a first sag depth that is within 10% of a second sag depth of the second curved glass substrate. In one or more embodiments, the first glass substrate and the second glass substrate exhibit a shape deviation therebetween of about 5 mm or less as measured by an optical three-dimensional scanner or exhibit minimal optical distortion. Embodiments of vehicles including such laminates and methods for making such laminates are also disclosed.

Embodiments of a laminate including a first curved glass substrate comprising a first viscosity (poises) at a temperature of 630? C.; a second curved glass substrate comprising a second viscosity that is greater than the first viscosity at a temperature of 630? C.; and an interlayer disposed between the first curved glass substrate and the second curved glass substrate, are disclosed. In one or more embodiments, the first curved glass substrate exhibits a first sag depth that is within 10% of a second sag depth of the second curved glass substrate. In one or more embodiments, the first glass substrate and the second glass substrate exhibit a shape deviation therebetween of about ?5 mm or less as measured by an optical three-dimensional scanner or exhibit minimal optical distortion. Embodiments of vehicles including such laminates and methods for making such laminates are also disclosed.

A first aspect of the present invention relates to a glass substrate having a content of alkali metal oxides, as represented by molar percentage based on oxides, of 0 to 0.1%, a devitrification-temperature viscosity of 10.sup.3.2 dPa.Math.s or higher, and an average coefficient of thermal expansion at 30 to 220 C. of 7.80 to 9.00 (ppm/ C.). A second aspect of the present invention relates to a glass substrate which is to be used for a support substrate for semiconductor packages, the glass substrate having a content of alkali metal oxides, as represented by molar percentage based on oxides, of 0 to 0.1% and a photoelastic constant of 10 to 26 nm/cm/MPa.