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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Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

27-02-2018

Publisher

International Electrotechnical Committee

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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IEC 61747-40-5:2018

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