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immediate downloadReleased: 2018-03-12
BS IEC 61747-40-5:2018
Liquid crystal display devices Mechanical testing of display cover glass for mobile devices. Strength against dynamic impact by a sharp object with the specimen rigidly supported
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| Standard number: | BS IEC 61747-40-5:2018 |
| Pages: | 16 |
| Released: | 2018-03-12 |
| ISBN: | 978 0 580 95924 0 |
| Status: | Standard |
DESCRIPTION
BS IEC 61747-40-5:2018
This standard BS IEC 61747-40-5:2018 Liquid crystal display devices is classified in these ICS categories:
- 31.120 Electronic display devices
This part of IEC 61747 is a mechanical performance testing procedure for cover glass used in electronic displays in mobile devices. This document focuses on the measurement of surface impact energy required to fracture a specimen due to the collision of sharp particles onto the surface of a cover glass. This is achieved by dropping a ball on a sheet of coated abrasives placed on the cover glass, which is rigidly supported. The failure mode is associated with damage introduction via sharp contact. Crack propagation is enhanced by central tension in the case of strengthened glass. This failure mode represents one of several field failure modes observed in mobile devices.