IEC 61747-40-5:2018

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

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.

General Information

• Status: Published
• Publication Date: 26-Feb-2018
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 31.120 - Electronic display devices
• Technical Committee: TC 110 - Electronic displays
• Drafting Committee: WG 2 - TC 110/WG 2
• Current Stage: PPUB - Publication issued
• Start Date: 23-Mar-2018
• Completion Date: 27-Feb-2018

Standards Content (Sample)

IEC 61747-40-5
®

Edition 1.0 2018-02
INTERNATIONAL
STANDARD

colour
inside


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
IEC 61747-40-5:2018-02(en)

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IEC 61747-40-5

®


Edition 1.0 2018-02




INTERNATIONAL



STANDARD








colour

inside










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























INTERNATIONAL

ELECTROTECHNICAL


COMMISSION





ICS 31.120 ISBN 978-2-8322-5402-8



  Warning! Make sure that you obtained this publication from an authorized distributor.


® Registered trademark of the International Electrotechnical Commission

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– 2 – IEC 61747-40-5:2018 © IEC 2018
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 General . 7
5 Apparatus . 8
5.1 Testing environment and pre-conditioning . 8
5.2 Apparatus overview .
...