Glass article with improved surface quality

A glass article having a thickness of from 10 μm to 150 μm, the glass article comprising:

• a first surface;
• a second surface, wherein a surface roughness Ra (arithmetic average roughness) of the second surface is at most 0.30 nm;
• and
• at least one edge connecting the first surface and the second surface.

A glass article having a thickness of from 10 μm to 150 μm, the glass article comprising:

• a first surface;
• a second surface, wherein the first surface and the second surface are essentially parallel to each other;
• and
• at least one edge connecting the first surface and the second surface, wherein the at least one edge has a chamfer structure comprising three surfaces comprising a perpendicular surface being essentially perpendicular to the first surface and to the second surface, a primary connecting surface connecting the perpendicular surface and the first surface, and a secondary connecting surface connecting the perpendicular surface and the second surface, wherein the chamfer structure has a profile such that a tangent line A to the primary connecting surface crosses a tangent line B to the first surface at a distance d1 from a tangent line C to the perpendicular surface and a tangent line D to the secondary connecting surface crosses a tangent line E to the second surface at a distance d2 from the tangent line C to the perpendicular surface, wherein both d1 and d2 are measured perpendicular to the tangent line C to the perpendicular surface, wherein tangent lines A, B, C, D, and E are obtained by fitting a respective tangent line to the corresponding surface in a profile of the chamfer structure, wherein the chamfer structure is asymmetric such that d1≠d2.

A glass article having a thickness of from 10 μm to 150 μm, the glass article comprising:

• a first surface having an impact resistance corresponding to a pen drop height of at least 5 mm;
• a second surface having a ball-on-ring failure force of at least 5.0 N and/or a 2-point bending strength of at least 2,000 MPa;
• and
• at least one edge connecting the first surface and the second surface.

A method of processing a plurality of glass articles each having a first surface and a second surface, the method comprising:

• providing a plurality of glass articles;
• forming a stack assembly comprising the plurality of glass articles and at least one adhesive layer between two adjacent glass articles of the stack assembly, wherein the first surface of the glass articles is in contact with a first type of adhesive and the second surface of the glass articles is in contact with a second type of adhesive;
• contacting the stack assembly or smaller stack assemblies obtained therefrom with a first etching solution;
• delaminating the stack assembly or the smaller stack assemblies obtained therefrom by removing the first type of adhesive, wherein sandwich assemblies are obtained consisting of two glass articles and the second type of adhesive located between the two glass articles;
• contacting the sandwich assemblies with a second etching solution;
• and
• delaminating the sandwich assemblies by removing the second type of adhesive.