IEC 62679-3-2:2013

IEC 62679-3-2 ®
Edition 1.0 2013-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electronic paper display –
Part 3-2: Measuring method – Electro-optical

Afficheur de papier électronique –
Partie 3-2: Méthode de mesure – Electro-optique

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IEC 62679-3-2 ®
Edition 1.0 2013-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electronic paper display –
Part 3-2: Measuring method – Electro-optical

Afficheur de papier électronique –

Partie 3-2: Méthode de mesure – Electro-optique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX T
ICS 31.120; 31.260 ISBN 978-2-8322-1044-4

– 2 – 62679-3-2 © IEC:2013
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Abbreviations . 6
3 Overview . 6
3.1 General . 6
3.2 Measuring equipment . 6
3.3 Standard locations of measurement field . 7
3.3.1 Matrix displays . 7
3.3.2 Segment displays . 7
3.4 Initial reflectance light signal . 8
3.5 Standard DUT operating conditions . 9
3.5.1 General . 9
3.5.2 Response time. 9
3.5.3 Frame response . 11
3.6 Electrical characteristics – Rewriting electric energy . 15
3.6.1 Purpose . 15
3.6.2 Measuring instruments . 15
3.6.3 Measuring method . 15
3.6.4 Explanation . 16
3.6.5 Specified conditions . 17
3.7 Image retention duration . 17
3.7.1 Purpose . 17
3.7.2 Measuring instruments . 17
3.7.3 Measuring method . 17
3.7.4 Explanation . 18
3.7.5 Specified conditions . 18
3.8 Electric power of keeping the image contrast . 19
3.8.1 Purpose . 19
3.8.2 Measuring instruments . 19
3.8.3 Measuring method . 19
3.8.4 Explanation . 20
3.8.5 Specified conditions . 20
3.9 Electric energy of keeping the image contrast for a certain time period . 21
3.9.1 Purpose . 21
3.9.2 Measuring instruments . 21
3.9.3 Measuring method . 21
3.9.4 Explanation . 22
3.9.5 Specified conditions . 23
Bibliography . 24

Figure 1 – Measurement locations of display active area . 7
Figure 2 – HL pattern . 8
Figure 3 – Sampling points . 8
Figure 4 – An example of block diagram of an electronic paper display panel and
module . 10
Figure 5 – Relationship between driving signal and optical response time . 10

62679-3-2 © IEC:2013 – 3 –
Figure 6 – An example of driving signal and frame response time (segment) . 13
Figure 7 – An example of driving signal and frame response time (matrix) . 14
Figure 8 – Checkerboard pattern . 16
Figure 9 – An example of block diagram for measuring the rewriting electric energy of
an electronic paper display module . 16
Figure 10 – Temporal characteristics of contrast ratio . 18
Figure 11 – Image contrast and driving mode. 19
Figure 12 – Image contrast, driving mode and measuring period . 22

– 4 – 62679-3-2 © IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRONIC PAPER DISPLAY –
Part 3-2: Measuring method –
Electro-optical
FOREWORD
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