A method of forming a strengthened glass article is provided. The method includes providing a strengthened glass article. The strengthened glass article is in the form of a container including a sidewall having an exterior surface and an interior surface that encloses an interior volume. The sidewall has an exterior strengthened surface layer that includes the exterior surface, an interior strengthened surface layer that includes the interior surface and a central layer between the exterior strengthened surface layer and the interior strengthened surface layer that is under a tensile stress. A laser-induced intended line of separation is formed in the central layer at a predetermined depth between the exterior strengthened surface layer and the interior strengthened surface layer by irradiating the sidewall with a laser without separating the glass article.

The disclosure provides textured glass components as well as electronic device cover assemblies and enclosures which include the textured glass components. In some cases, a protruding portion of the glass component includes a textured region provided over a camera assembly of the electronic device. One or more openings may be provided in the textured region. The textured region may be configured to provide a translucent or hazy appearance to the electronic device while providing a desirable “feel” to the electronic device and level of cleanability.

A glass composition includes: greater than or equal to 55 mol % and less than or equal to 70 mol % SiO.sub.2; greater than or equal to 14 mol % and less than or equal to 25 mol % Al.sub.2O.sub.3; greater than or equal to 0 mol % B.sub.20.sub.3; greater than or equal to 0 mol % P.sub.2O.sub.5; greater than or equal to 0 mol % and less than or equal to 10 mol % Li.sub.2O; greater than or equal to 6.5 mol % and less than or equal to 20 mol % Na.sub.2O; greater than or equal to 0 mol % K.sub.2O; greater than or equal to 0.1 mol % and less than or equal to 4.5 mol % MgO; greater than or equal to 0 mol % CaO; and greater than or equal to 0 mol % SrO. The sum of Li.sub.2O, Na.sub.2O, and K.sub.2O in the glass composition may be greater than or equal to 6.5 mol % and less than or equal to 22 mol %. The glass composition may satisfy the relationship Al.sub.2O.sub.3*(2.94)+B.sub.2O.sub.3*(−0.58)+P.sub.2O.sub.5*(−3.87)+Li.sub.2O*(5.01)+Na.sub.2O*(1.89)+K.sub.2O*(−2.03) is greater than 100.

A method of manufacturing a strengthened glass article includes forming a glass-to-glass laminate by fusing clad and core glasses, where the clad has greater high-temperature coefficient of thermal expansion (HTCTE) than the core but a lesser low-temperature coefficient of thermal expansion (LTCTE). The method includes cooling the laminate to impart stresses through contraction mismatch between the clad and core, where stresses in the laminate from HTCTE differences at least partially offset stresses in the laminate from LTCTE. After the cooling, the method includes modifying geometry of the laminate, then relaxing at least some of the stresses in the glass-to-glass laminate from differences in the HTCTE.

Separation lines are formed in a glass plate having first and second main surfaces by irradiating with laser light. The separation lines are configured of a product line corresponding to an outline of a glass article to be separated; and a release line. The product line includes a first in-plane void array configured of in-plane voids arranged on the first main surface; and internal void arrays for product line, each having an in-plane void. The release line includes internal void arrays for release line. A maximum length of the internal void array for product line L.sub.1max is equal to a maximum length of the internal void array for release line L.sub.2max, and a minimum length of the internal void array for product line L.sub.1min is greater than a minimum length of the internal void array for release line L.sub.2min; or the length L.sub.1max is greater than the length L.sub.2max.

Provided is a glass strengthening method including preparing a glass and strengthening the glass by providing the glass with a molten salt, wherein the molten salt has a freezing point of about 220° C. or more and less than 320° C. In addition, the molten salt includes a first salt and a second salt that are different from each other, wherein the first salt is KNO.sub.3, and the second salt includes at least one ion of Li.sup.+, Na.sup.+, K.sup.+, Cs.sup.+, and/or Rb.sup.+.

Glass-based articles are disclosed having a thickness in a range of from about 0.2 mm to about 4.0 mm, a first compressive stress layer extending from a first surface of the glass-based article to a first depth of compression that is in a range of from about 5% to about 20% of the thickness, a second compressive stress layer extending from a second surface of the glass-based article to a second depth of compression that is in a range of from about 5% to about 20% of the thickness, wherein the second surface is opposite the first surface, and a central region extending from the first depth of compression to the second depth of compression and having a maximum tensile stress in a range of from about 0.5 MPa to about 20 MPa. Electronic devices comprising the glass-based articles and methods of making glass-based articles are also disclosed.

An LED tube lamp with overvoltage protection capability is provided. The LED tube lamp includes a lamp tube, two external connection terminals, a rectifying circuit, a filtering circuit, an LED module, and a protection circuit. The protection circuit is coupled between two input terminals of the LED module and configured to perform overvoltage protection when determining that a voltage level between the two input terminals of the LED module reaches or is higher than a predefined voltage value, wherein the protection circuit includes a diode and the predefined voltage value is in a range of about 40V to about 600V.

An inference method includes inferring a value that includes a stress value in a region located 50 μm or shallower from a surface of a chemically strengthened glass, by receiving as input at least a temperature and a time used upon chemical strengthening, and stress values at three or more different depth positions 20 μm or deeper from the surface of the chemically strengthened glass that has been obtained by chemically strengthening a glass having a thickness of 0.2 mm or greater with the temperature and the time.

Disclosed is a lithium zirconium-based aluminosilicate glass, comprising the following components by mass percentage: 50%-72% of SiO.sub.2, 10%-27% of Al.sub.2O.sub.3, 0.1%-10.0% of B.sub.2O.sub.3, 2%-10% of Li.sub.2O, 4%-15% of Na.sub.2O, 0.1%-5.0% of ZrO.sub.2, and 0-4% of K.sub.2O, wherein the total mass percentage of Li.sub.2O, Na.sub.2O and K.sub.2O is ≥9%, and the ratio of the mass of Li.sub.2O to the total mass of Li.sub.2O, Na.sub.2O and K.sub.2O is (0.22-0.48):1.