Liquid crystal display devices - Part 40-1: Mechanical testing of display cover glass for mobile devices - Guidelines

IEC 61747-40-1:2013 is a mechanical performance testing guideline for cover glass used in electronic flat panel displays in mobile devices. This document focuses on key mechanical testing performance parameters and covers mainly strength and damage resistance attributes. The test methods will focus on the cover glass level testing only.

Dispositifs d'affichage à cristaux liquides - Partie 40-1: Essais mécaniques des verres protecteurs des affichages pour les dispositifs mobiles - Lignes directrices

La CEI 61747-40-1:2013 constitue les lignes directrices des essais de performances mécaniques pour les verres protecteurs utilisés dans les dispositifs d'affichages électroniques à écran plat des dispositifs mobiles. Ce document porte essentiellement sur les paramètres clés des performances d'essais mécaniques et il couvre principalement les attributs de résistance et de résistance aux dommages. Les méthodes d'essais seront axées sur les essais du niveau des verres protecteurs uniquement.

General Information

Status
Published
Publication Date
17-Jun-2013
Technical Committee
Drafting Committee
Current Stage
DELPUB - Deleted Publication
Start Date
09-Feb-2018
Completion Date
17-Apr-2019
Ref Project

Relations

Buy Standard

Standard
IEC 61747-40-1:2013 - Liquid crystal display devices - Part 40-1: Mechanical testing of display cover glass for mobile devices - Guidelines Released:6/18/2013
English and French language
20 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)


IEC 61747-40-1 ®
Edition 1.0 2013-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Liquid crystal display devices –
Part 40-1: Mechanical testing of display cover glass for mobile devices –
Guidelines
Dispositifs d’affichage à cristaux liquides –
Partie 40-1: Essais mécaniques des verres protecteurs des affichages pour les
dispositifs mobiles – Lignes directrices

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,

please contact the address below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni
utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les

microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.

Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette

publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

Useful links:
IEC publications search - www.iec.ch/searchpub Electropedia - www.electropedia.org
The advanced search enables you to find IEC publications The world's leading online dictionary of electronic and
by a variety of criteria (reference number, text, technical electrical terms containing more than 30 000 terms and
committee,…). definitions in English and French, with equivalent terms in
It also gives information on projects, replaced and additional languages. Also known as the International
withdrawn publications. Electrotechnical Vocabulary (IEV) on-line.

IEC Just Published - webstore.iec.ch/justpublished Customer Service Centre - webstore.iec.ch/csc
Stay up to date on all new IEC publications. Just Published If you wish to give us your feedback on this publication
details all new publications released. Available on-line and or need further assistance, please contact the
also once a month by email. Customer Service Centre: csc@iec.ch.

A propos de la CEI
La Commission Electrotechnique Internationale (CEI) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.

Liens utiles:
Recherche de publications CEI - www.iec.ch/searchpub Electropedia - www.electropedia.org
La recherche avancée vous permet de trouver des Le premier dictionnaire en ligne au monde de termes
publications CEI en utilisant différents critères (numéro de électroniques et électriques. Il contient plus de 30 000
référence, texte, comité d’études,…). termes et définitions en anglais et en français, ainsi que
Elle donne aussi des informations sur les projets et les les termes équivalents dans les langues additionnelles.
publications remplacées ou retirées. Egalement appelé Vocabulaire Electrotechnique
International (VEI) en ligne.
Just Published CEI - webstore.iec.ch/justpublished
Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications de la CEI.
Just Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur
Disponible en ligne et aussi une fois par mois par email. cette publication ou si vous avez des questions
contactez-nous: csc@iec.ch.
IEC 61747-40-1 ®
Edition 1.0 2013-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Liquid crystal display devices –

Part 40-1: Mechanical testing of display cover glass for mobile devices –

Guidelines
Dispositifs d’affichage à cristaux liquides –

Partie 40-1: Essais mécaniques des verres protecteurs des affichages pour les

dispositifs mobiles – Lignes directrices

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX K
ICS 31.120 ISBN 978-2-83220-862-5

– 2 – 61747-40-1 © IEC:2013
CONTENTS
FOREWORD . 3

INTRODUCTION . 5

1 Scope . 6

2 Terms and definitions . 6

3 Mechanical performance testing guidelines . 7

3.1 General . 7

3.2 Mechanical testing guidelines for display cover glass for mobile devices . 8

4 Brief overview of mechanical test methods . 8
Bibliography . 10

Table 1 – Mechanical attributes and measurement methods . 8

61747-40-1 © IEC:2013 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
LIQUID CRYSTAL DISPLAY DEVICES –

Part 40-1: Mechanical testing of display cover glass

for mobile devices – Guidelines

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 61747-40-1 has been prepared by IEC technical committee 110:
Electronic display devices.
The text of this standard is based on the following documents:
FDIS Report on voting
110/464/FDIS 110/476/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – 61747-40-1 © IEC:2013
A list of all the parts in the IEC 61747 series, under the general title Liquid crystal display

devices, can be found on the IEC website.

Future standards in this series will carry the new general title as cited above. Titles of existing

standards in this series will be updated at the time of the next edition.

The committee has decided that the contents of this publication will remain unchanged until

the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data

related to the specific publication. At this date, the publication will be

• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
61747-40-1 © IEC:2013 – 5 –
INTRODUCTION
Mobile electronic devices have become increasingly sophisticated and often incorporate

displays for the purposes of user interface and viewing. Such displays commonly incorporate

a transparent cover glass which aids in protecting the display against the introduction of

damage through routine device transport and use, as well as occasional or accidental misuse.

The purpose of this standard is to provide mechanical testing guidelines for cover glasses

utilized in such applications. Such glasses may or may not be strengthened, for example via

an ion-exchange process, which acts to increase mechanical strength through the introduction

of a surface compressive layer.

It is assumed that all measurements – described in detail in individual test method standards
– are performed by personnel skilled in the general art of mechanical property measurements.
Furthermore, it should be assured that all equipment is suitably calibrated as is known to
skilled personnel and that records of the calibration data and traceability are kept.

– 6 – 61747-40-1 © IEC:2013
LIQUID CRYSTAL DISPLAY DEVICES –

Part 40-1: Mechanical testing of display cover glass

for mobile devices – Guidelines

1 Scope
This part of IEC 61747 is a mechanical performance testing guideline for cover glass used in
electronic flat panel displays in mobile devices. This document focuses on key mechanical
testing performance parameters and covers mainly strength and damage resistance attributes.
The test methods will focus on the cover glass level testing only.
NOTE The glass used for cover glasses for electronic mobile devices can be chemically strengthened by an ion-
exchange process. This ion exchange process increases the mechanical strength of the glass.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
abraded
subjected to a defined process which introduces mechanical abrasive damage to a portion of
the specimen to be placed under tension during subsequent flexural strength testing, for
example, biaxial flexure via ring-on-ring
2.2
as-received
representative of standard sample preparation and handling practices, and therefore free of
intentional mechanical damage such as abrasion, scratching, or indentation
Note 1 to entry: The strength of glass is not an intrinsic material property, and like other brittle elastic materials,
is highly dependent upon the surface flaw population. The term “as-received” is meant to represent the surface
condition upon specimen receipt and should be distinguished from a condition where damage has been
intentionally introduced prior to testing.
2.3
central tension
CT
tensile stress generated within the interior of a glass article which serves to co
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.