IEC 61747-40-5:2018
Current
The latest, up-to-date edition.
Liquid crystal display devices - Part 40-5: 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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English
27-02-2018
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FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 General
5 Apparatus
6 Procedure
7 Calculations
8 Reporting
9 Specifications
IEC 61747-40-5:2018(E) 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.
| Committee |
TC 110
|
| DevelopmentNote |
Stability Date: 2023. (03/2018)
|
| DocumentType |
Standard
|
| Pages |
13
|
| PublisherName |
International Electrotechnical Committee
|
| Status |
Current
|
| Standards | Relationship |
| BS IEC 61747-40-5:2018 | Identical |
| IEC 61649:2008 | Weibull analysis |
| ISO 6344-1:1998 | Coated abrasives Grain size analysis Part 1: Grain size distribution test |
| ISO 8512-2:1990 | Surface plates — Part 2: Granite |
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