IEC 62341-5-2:2019

Organic light emitting diode (OLED) displays - Part 5-2: Mechanical endurance test methods

IEC 62341-5-2:2019 defines test methods for evaluating the mechanical endurance quality of organic light emitting diode (OLED) display panels and modules or their packaged form for transportation. It takes into account, wherever possible, the environmental test methods outlined in IEC 60068 (all parts). The object of this document is to establish uniform preferred test methods for judging the mechanical endurance properties of OLED display devices.
This edition includes the following significant technical changes with respect to the previous edition:
- Vibration and shock tests for large displays (for example, TVs and monitors) are added.

General Information

• Status: Published
• Publication Date: 17-Mar-2019
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 31.260 - Optoelectronics. Laser equipment
• Technical Committee: TC 110 - Electronic displays
• Drafting Committee: WG 18 - TC 110/WG 18
• Current Stage: PPUB - Publication issued
• Start Date: 29-Mar-2019
• Completion Date: 18-Mar-2019

Relations

• Revises: IEC 62341-5-2:2013 - Organic light emitting diode (OLED) displays - Part 5-2: Mechanical endurance testing methods
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62341-5-2 ®
Edition 2.0 2019-03
INTERNATIONAL
STANDARD
colour
inside
Organic light emitting diode (OLED) displays –
Part 5-2: Mechanical endurance test methods
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.

IEC Central Office Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
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 corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and
once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or CISPR.

need further assistance, please contact the Customer Service

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IEC 62341-5-2 ®
Edition 2.0 2019-03
INTERNATIONAL
STANDARD
colour
inside
Organic light emitting diode (OLED) displays –

Part 5-2: Mechanical endurance test methods

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.260 ISBN 978-2-8322-6603-8

– 2 – IEC 62341-5-2:2019 © IEC 2019
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Abbreviated terms . 7
5 Standard atmospheric conditions . 7
6 Evaluation . 7
6.1 Visual examination and verification of dimensions . 7
6.2 Reporting . 8
7 Mechanical endurance test methods . 8
7.1 General . 8
7.2 Vibration (sinusoidal) . 8
7.2.1 General . 8
7.2.2 Purpose . 8
7.2.3 Test apparatus . 8
7.2.4 Test procedure . 8
7.2.5 Evaluation . 12
7.3 Shock . 12
7.3.1 General . 12
7.3.2 Purpose . 12
7.3.3 Test apparatus . 12
7.3.4 Test procedure . 12
7.3.5 Evaluation . 13
7.4 Quasistatic strength . 13
7.4.1 General . 13
7.4.2 Purpose . 13
7.4.3 Specimen . 14
7.4.4 Test apparatus . 14
7.4.5 Test procedure . 14
7.4.6 Evaluation . 15
7.5 Four-point bending test . 15
7.5.1 General . 15
7.5.2 Purpose . 15
7.5.3 Specimen . 15
7.5.4 Test apparatus . 16
7.5.5 Test procedure . 17
7.5.6 Post-testing analysis . 17
7.5.7 Evaluation . 18
7.6 Transportation drop test . 18
7.6.1 General . 18
7.6.2 Purpose . 18
7.6.3 Test sample . 18
7.6.4 Test procedure . 18
7.6.5 Evaluation . 19
7.7 Peel strength test . 19
7.7.1 Purpose . 19

7.7.2 Test procedure . 19
7.7.3 Evaluation . 20
7.8 Shock test for large size display . 20
7.8.1 Purpose . 20
7.8.2 Test procedure . 20
Annex A (informative) Example of raw test data reduction for four-point bending test . 21
A.1 Purpose . 21
A.2 Sample test results . 21
A.3 Finite element analysis . 22
A.4 Use of conversion factor . 26
A.5 Evaluation . 27
Bibliography . 29

Figure 1 – Example of the specimen and jig . 9
Figure 2 – Directions of vibration test . 9
Figure 3 – Configuration of OLED shock test set-up . 12
Figure 4 – Schematic of quasistatic strength measurement apparatus example . 14
Figure 5 – Schematics of test apparatus and pinned bearing edges . 16
Figure 6 – Specimen configuration under four-point bending test . 16
Figure 7 – Order of transportation package drop . 19
Figure 8 – Example of peeling strength test . 20
Figure A.1 – Specimen dimensions used for sample test . 21
Figure A.2 – Examples of test results: Load-displacement curves . 22
Figure A.3 – Finite element model of test specimen . 23
Figure A.4 – Displacement contour map after moving the loading bar down by 2 mm . 24
Figure A.5 – Contour map of maximum principal stress distribution . 24
Figure A.6 – Maximum principal stress and maximum stress along the edge . 25
Figure A.7 – Final relationship between panel strength and failure load . 25
Figure A.8 – Extraction of conversion factor by linear fitting . 26
Figure A.9 – Example of Weibull distribution of strength data and statistical outputs . 28
Figure A.10 – Fitted failure probability distribution of strength data and B strength . 28
Table 1 – Frequency range – Lower end . 10
Table 2 – Frequency range – Upper end . 10
Table 3 – Recommended frequency ranges . 11
Table 4 – Recommended vibration amplitudes . 11
Table 5 – Conditions for shock test . 13
Table 6 – Examples of test parameter combinations . 17
Table 7 – Example of package drop sequence . 19
Table A.1 – Results of raw test data . 22
Table A.2 – Example of conversion factor (t = 0,4mm, test span = 20mm/40mm) . 26
Table A.3 – Failure load and converted strength data . 27

– 4 – IEC 62341-5-2:2019 © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ORGANIC LIGHT EMITTING DIODE (OLED) DISPLAYS –

Part 5-2: Mechanical endurance test methods

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 i
...

IEC 62341-5-2 ®
Edition 2.0 2019-03
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Organic light emitting diode (OLED) displays –
Part 5-2: Mechanical endurance testing methods

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.

IEC Central Office Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
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 corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and
once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or CISPR.

need further assistance, please contact the Customer Service

Centre: [e-mail].
IEC 62341-5-2 ®
Edition 2.0 2019-03
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Organic light emitting diode (OLED) displays –

Part 5-2: Mechanical endurance testing methods

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.260 ISBN 978-2-8322-6683-0

– 2 – IEC 62341-5-2:2019 RLV © IEC 2019
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Abbreviated terms . 7
5 Standard atmospheric conditions . 8
6 Evaluation . 8
6.1 Visual examination and verification of dimensions . 8
6.2 Reporting . 8
7 Mechanical endurance test methods . 8
7.1 General . 8
7.2 Vibration (sinusoidal) . 8
7.2.1 General . 8
7.2.2 Purpose . 8
7.2.3 Test apparatus . 8
7.2.4 Test procedure . 9
7.2.5 Evaluation . 12
7.3 Shock . 12
7.3.1 General . 12
7.3.2 Purpose . 12
7.3.3 Test apparatus . 12
7.3.4 Test procedure . 12
7.3.5 Evaluation . 13
7.4 Quasistatic strength . 13
7.4.1 General . 13
7.4.2 Purpose . 13
7.4.3 Specimen . 14
7.4.4 Test apparatus . 14
7.4.5 Test procedure . 14
7.4.6 Evaluation . 15
7.5 Four-point bending test . 15
7.5.1 General . 15
7.5.2 Purpose . 15
7.5.3 Specimen . 15
7.5.4 Test apparatus . 16
7.5.5 Test procedure . 17
7.5.6 Post-testing analysis . 17
7.5.7 Evaluation . 18
7.6 Transportation drop test . 18
7.6.1 General . 18
7.6.2 Purpose . 18
7.6.3 Test sample . 18
7.6.4 Test procedure . 18
7.6.5 Evaluation . 19
7.7 Peel strength test . 19
7.7.1 Purpose . 19

7.7.2 Test procedure . 19
7.7.3 Evaluation . 20
7.8 Shock test for large size display . 20
7.8.1 Purpose . 20
7.8.2 Test procedure . 20
Annex A (informative) Example of raw test data reduction for four-point bending test . 21
A.1 Purpose . 21
A.2 Sample test results . 21
A.3 Finite element analysis . 22
A.4 Use of conversion factor . 26
A.5 Evaluation . 27
Bibliography . 29

Figure 1 – Example of the specimen and jig . 9
Figure 2 – Directions of vibration test . 9
Figure 3 – Configuration of OLED shock test set-up . 12
Figure 4 – Schematic of quasistatic strength measurement apparatus example . 14
Figure 5 – Schematics of test apparatus and pinned bearing edges . 16
Figure 6 – Specimen configuration under four-point bending test . 16
Figure 7 – Order of transportation package drop . 19
Figure 8 – Example of peeling strength test . 20
Figure A.1 – Specimen dimensions used for sample test . 21
Figure A.2 – Examples of test results: Load-displacement curves . 22
Figure A.3 – Finite element model of test specimen . 23
Figure A.4 – Displacement contour map after moving down the loading bar down
by 2 mm . 24
Figure A.5 – Contour map of maximum principal stress distribution . 24
Figure A.6 – Maximum principal stress and maximum stress along the edge . 25
Figure A.7 – Final relationship between panel strength and failure load . 25
Figure A.8 – Extraction of conversion factor by linear fitting . 26
Figure A.9 – Example of Weibull distribution of strength data and statistical outputs . 28
Figure A.10 – Fitted failure probability distribution of strength data and B10 strength. 28

Table 1 – Frequency range – Lower end . 10
Table 2 – Frequency range – Upper end . 10
Table 3 – Recommended frequency ranges . 11
Table 4 – Recommended vibration amplitudes . 11
Table 5 – Conditions for shock test . 13
Table 6 – Examples of test parameter combinations . 17
Table 7 – Example of package drop sequence . 19
Table A.1 – Results of raw test data . 22
Table A.2 – Example of conversion factor (t = 0,4mm, test span = 20mm/40mm) . 26
Table A.3 – Failure load and converted strength data . 27

– 4 – IEC 62341-5-2:2019 RLV © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ORGANIC LIGHT EMITTING DIODE (OLED) DISPLAYS –

Part 5-2: Mechanical endurance testing methods

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 Comm
...