IEC 62899-502-2:2019

IEC 62899-502-2 ®
Edition 1.0 2019-07
INTERNATIONAL
STANDARD
colour
inside
Printed electronics –
Part 502-2: Quality assessment – Organic light emitting diode (OLED) elements –
Combined mechanical and environmental stress test methods for flexible OLED
elements
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IEC 62899-502-2 ®
Edition 1.0 2019-07
INTERNATIONAL
STANDARD
colour
inside
Printed electronics –
Part 502-2: Quality assessment – Organic light emitting diode (OLED) elements –

Combined mechanical and environmental stress test methods for flexible OLED

elements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.035.01; 31.260 ISBN 978-2-8322-7220-6

– 2 – IEC 62899-502-2:2019  IEC 2019
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 General . 8
4.1 Overview. 8
4.2 Structure of measuring equipment . 8
4.3 Standard conditions . 8
4.4 Standard atmospheric conditions for referee measurements and tests . 8
4.5 Standard atmospheric conditions for measurements and tests . 9
4.6 Recovery conditions . 9
4.7 Operating conditions . 9
4.8 Flexible OLED element test configuration. 9
5 Measurements and analysis . 9
5.1 General . 9
5.2 Sample preparation of OLED element(s) for optical and electrical
measurements . 10
5.3 Visual inspection . 10
5.4 IVL characteristics . 10
5.5 Luminous flux . 10
5.6 Mechanical status . 10
6 Combined mechanical and environmental stress test . 10
6.1 Mechanical stress test (deformation) . 10
6.2 Cyclic bending test . 11
6.2.1 General . 11
6.2.2 Purpose . 11
6.2.3 Test apparatus . 11
6.2.4 Testing conditions . 11
6.2.5 Test procedure . 11
6.3 Static bending test . 12
6.3.1 General . 12
6.3.2 Purpose . 12
6.3.3 Test apparatus . 12
6.3.4 Testing conditions . 13
6.3.5 Test procedure . 13
6.4 Dynamic and static rolling test . 14
6.4.1 General . 14
6.4.2 Purpose . 14
6.4.3 Test apparatus . 14
6.4.4 Testing conditions . 15
6.4.5 Test procedure . 16
6.5 Environmental testing methods . 16
6.5.1 General . 16
6.5.2 Environmental test at certain temperatures . 16
7 Reports and results . 18

Annex A (normative) IVL measurement methods . 19
A.1 General . 19
A.2 Measurement method . 19
A.2.1 General . 19
A.2.2 Measurement apparatus . 19
A.2.3 Measurement procedure . 19
A.2.4 Acceptance . 19
A.2.5 Items for the relevant specification . 19
Annex B (normative) Luminous flux measurement methods . 21
B.1 General . 21
B.2 Measurement method . 21
B.2.1 General . 21
B.2.2 Measurement apparatus . 21
B.2.3 Measurement procedure . 22
B.2.4 Acceptance . 23
B.2.5 Terms for additional definition . 23
Bibliography . 24

Figure 1 – Apparatus for cyclic bending test . 12
Figure 2 – Apparatus for static bending test . 13
Figure 3 – Example of apparatus for rolling test . 15
Figure A.1 – Layout of luminous measurement system . 20
Figure B.1 – Example of measurement apparatus for luminous flux using an integral
sphere . 22

Table 1 – Standard conditions for referee measurements and tests . 8
Table 2 – Examples of the test conditions . 17

– 4 – IEC 62899-502-2:2019  IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PRINTED ELECTRONICS –
Part 502-2: Quality assessment –
Organic light emitting diode (OLED) elements –
Combined mechanical and environmental stress
test methods for flexible OLED elements

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