Embodiments of the disclosure relate to a rollable glass sheet configured to reversibly transition between a flat configuration and a bent configuration. The rollable glass sheet includes a first major surface and a second major surface opposite to the first major surface. The first major surface and the second major surface define a thickness of the glass sheet that is 0.4 mm or less. In the flat configuration, the first major surface includes a first surface compressive stress and a first depth of compression, and in the bent configuration, the first major surface includes a curvature. At a radius of curvature of 50 mm, the first major surface includes a second surface compressive stress less than the first compressive stress and a second depth of compression less than the first depth of compression and greater than 11 μm.

Embodiments of thermally and chemically strengthened glass-based articles are disclosed. In one or more embodiments, the glass-based articles may include a first surface and a second surface opposing the first surface defining a thickness (t), a first CS region comprising a concentration of a metal oxide that is both non-zero and varies along a portion of the thickness, and a second CS region being substantially free of the metal oxide of the first CS region, the second CS region extending from the first surface to a depth of compression of about 0.17•t or greater. In one or more embodiments, the first surface is flat to 100 μm total indicator run-out (TIR) along any 50 mm or less profile of the first surface. Methods of strengthening glass sheets are also disclosed, along with consumer electronic products, laminates and vehicles including the same are also disclosed.

A plate-like chemically strengthened glass having a compression stress layer on the surface of the glass, wherein the compressive stress value (CS.sub.0) at the glass surface of is 500 MPa or more, the plate thickness (t) is 400 μm or more, the compressive stress depth of layer (DOL) is (t×0.15) μm or more, the compressive stress values (CS.sub.1) and (CS.sub.2) when the depth from the glass surface is ¼ and ½, respectively, are 50 MPa or more, m.sub.1 expressed by {m.sub.1=(CS.sub.1−CS.sub.2/(DOL/4−DOL/2)} is −1.5 MPa/μm or more, m.sub.2 expressed by {m.sub.2=(CS.sub.2/(DOL/2−DOL)} is 0 MPa/μm or less, and m.sub.2 is less than m.sub.1.

The present disclosure relates to an ultrathin glass comprising a coating layer, wherein the coating layer comprises a top surface coating layer formed on the top surface of the ultrathin glass and a side surface coating layer that is connected to the top surface coating layer and covers the side surface of the ultrathin glass, and a method for preparing the same.

The present invention relates to a glass plate which is provided with a first main surface, and a second main surface which faces the first main surface. An antiglare portion and a non-antiglare portion are provided to the first main surface. The average lengths (RSm) of elements of roughness curves of the antiglare portion and the non-antiglare portion are respectively 1 μm or higher. The difference between the RSm of the antiglare portion and the RSm of the non-antiglare portion is 100 μm or lower.

The present invention provides a method of increasing the strength of a glass substrate for optical filters and a tempered-glass optical filter using a tempered glass substrate manufactured using the same, in which the glass substrate for optical filters is subjected to chemical tempering so that a compressive stress (CS) and a depth of layer (DOL) of the glass substrate are adjusted to increase the bending strength thereof.

A glass and an enclosure, including windows, cover plates, and substrates for mobile electronic devices comprising the glass. The glass has a crack initiation threshold that is sufficient to withstand direct impact, has a retained strength following abrasion that is greater than soda lime and alkali aluminosilicate glasses, and is resistant to damage when scratched. The enclosure includes cover plates, windows, screens, and casings for mobile electronic devices and information terminal devices.

Provided is a chemically strengthened optical glass with improved crack resistance and high hardness, in which the refractive index, the Abbe number, and the transmittance required for a conventional optical glass are maintained.

The chemically strengthened optical glass includes a compressive stress layer on a surface, and contains, by mass % in terms of oxide: 20.0% to 50.0% of a SiO.sub.2 component, 10.0% to 45.0% of a TiO.sub.2 component, and 0.1 to 20.0% of a Na.sub.2O component, and the chemically strengthened optical glass is characterized in that an Hv change rate defined as [(Hv.sub.after−Hv.sub.before)/Hv.sub.before]×100 is equal to or greater than 3.0%.

A glass substrate has a first surface, a second surface opposite to the first surface, and a thickness from the first surface to the second surface. The glass substrate includes a first region, a second region, and a third region. The first region extends from the first surface a first depth into the glass substrate and has a first compressive stress. The second region extends from the second surface a second depth into the glass substrate and has a second compressive stress different from the first compressive stress. The third region is between the first region and the second region. In the glass substrate, the first compressive stress has a maximum value at a location between the first surface and the first depth, and the second compressive stress has a maximum value at a location between the second surface and the second depth.

The present invention relates to an ultra-thin glass having a thickness (t), characterized in that, when the first surface is defined as a point (t.sub.0) with t=0, and the second surface is defined as a point (t.sub.t) with t=t, the point (t.sub.Kmax) at which the concentration of potassium ions (K.sup.+) is maximum between t.sub.0 and t.sub.t satisfies at least one of Equations 1 and 2 below, and the ultra-thin glass has a bend radius of less than 26.Math.t, and a method for manufacturing the same.

t.sub.0<t.sub.Kmax≤0.5.Math.t.sub.t  [Equation 1]

0.5.Math.t.sub.t≤t.sub.Kmax<t.sub.t.  [Equation 2]