Flexible Glass/Metal Foil Composite Articles and Production Process Thereof

A flexible article suitable for producing substrates of flexible devices, comprising:

• a multilayered structure including a layer of glass and a layer of metal foil, the glass being produced by high temperature melting and cooling in the absence of any precursor, wherein the glass has an electrical resistivity of above 5×1010 Ω·m at ambient temperature, a surface roughness of below 300 nm, a porosity of below 0.1% on the surface, a thickness of below 350 μm, a flowing temperature of below 1200° C., and a softening temperature of above 350° C., wherein the layer of glass has a content of Na2O+SiO2+P2O5+B2O3+SO3+V2O5+TiO2+BaO+ZnO that is 10-95 wt. %, wherein the glass is aluminosilicate glass or soda lime glass, and wherein the layer of metal foil has a thickness below 1 mm;
• and
• wherein between the layer of glass and the layer of metal foil there is a shear strength above 1 MPa/mm2, the multilayered structure being curvable to a curvature radius of above 1 mm.