This part of IEC 61747 is a mechanical performance testing procedure for cover glass used in electronic flat panel displays in mobile devices. This document focuses on the measurement of surface fracture load after flaw introduction via grit particle abrasion. After abrasion, the retained surface fracture load is measured with the method documented in IEC 61747-40-4.dition 1.0 2018-02 INTERNATIONAL STANDARD colour inside Liquid crystal display devices – Part 40-6: Mechanical testing of display cover glass for mobile devices – Retained biaxial flexural strength (abraded ring-on-ring) IEC 61747-40-6:2018-02(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright ？ 2018 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this public