IEC 62899-502-1:2017

IEC 62899-502-1 ®
Edition 1.0 2017-03
INTERNATIONAL
STANDARD
colour
inside
Printed electronics –
Part 502-1: Quality assessment – Organic light emitting diode (OLED) elements –
Mechanical stress testing of OLED elements formed on flexible substrates

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IEC 62899-502-1 ®
Edition 1.0 2017-03
INTERNATIONAL
STANDARD
colour
inside
Printed electronics –
Part 502-1: Quality assessment – Organic light emitting diode (OLED) elements –

Mechanical stress testing of OLED elements formed on flexible substrates

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.035.01; 31.260 ISBN 978-2-8322-4078-6

– 2 – IEC 62899-502-1:2017 © IEC 2017
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
3.1 General terms . 8
3.2 Terms related to optical and electrical properties . 8
3.3 Terms related to mechanical stress test . 9
4 Standard atmospheric condition for measurements and tests . 9
5 Evaluation methods of optical and electrical properties . 9
5.1 General . 9
5.2 Sample preparation of OLED element(s) for optical and electrical
measurements . 9
5.3 IVL characteristics . 10
5.4 Luminous flux . 10
5.5 Luminance uniformity . 10
6 Mechanical stress test methods . 10
6.1 General . 10
6.2 Bending test . 10
6.2.1 General . 10
6.2.2 Testing apparatus . 10
6.2.3 Testing procedure . 10
6.2.4 Evaluation . 11
6.2.5 Testing conditions . 11
6.3 Rolling test. 12
6.3.1 General . 12
6.3.2 Testing apparatus . 12
6.3.3 Testing procedure . 12
6.3.4 Evaluation . 13
6.3.5 Testing conditions . 13
6.4 Torsion test . 14
6.4.1 General . 14
6.4.2 Testing apparatus . 14
6.4.3 Testing procedure . 14
6.4.4 Evaluation . 15
6.4.5 Testing conditions . 15
6.5 Tension test . 16
6.5.1 General . 16
6.5.2 Testing apparatus . 16
6.5.3 Testing procedure . 16
6.5.4 Evaluation . 16
6.5.5 Testing conditions . 16
7 Failure criteria . 17
Annex A (normative) Measurement methods of IVL characteristics . 18
A.1 General . 18
A.2 Measurement method . 18

A.2.1 General . 18
A.2.2 Measurement apparatus . 18
A.2.3 Measurement procedure . 18
A.2.4 Acceptance . 18
A.2.5 Items for relevant specification . 18
Annex B (normative) Measurement methods of luminous flux . 20
B.1 General . 20
B.2 Measurement method . 20
B.2.1 General . 20
B.2.2 Measurement apparatus . 20
B.2.3 Measurement procedure . 21
B.2.4 Acceptance . 22
B.2.5 Terms for additional definition . 22

Figure 1 – Apparatus for bending test . 12
Figure 2 – Apparatus for rolling test . 13
Figure 3 – Apparatus for torsion test . 15
Figure 4 – Example of sample alignment for torsion testing . 15
Figure 5 – Apparatus for tension test . 17
Figure A.1 – Layout of luminous measurement system . 19
Figure B.1 – Example of measurement apparatus for luminous flux using an integral
sphere . 21

– 4 – IEC 62899-502-1:2017 © IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PRINTED ELECTRONICS –
Part 502-1: Quality assessment – Organic light emitting diode (OLED)
elements – Mechanical stress testing of OLED elements
formed on flexible substrates
FOREWORD
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