This part of IEC 61747-40 is a mechanical performance testing procedure for cover glass used in electronic flat panel displays in mobile devices. This standard is focused on the measurement of as-received edge strength via uni-axial flexure generated by a four-point bend.
IEC 61747-40-2:2015 history
2015IEC 61747-40-2:2015 Liquid crystal display devices - Part 40-2: Mechanical testing of display cover glass for mobile devices - Uni-axial flexural strength (4-point bend)