IEC 62341-6-3:2017
(Main)Organic light emitting diode (OLED) displays - Part 6-3: Measuring methods of image quality
Organic light emitting diode (OLED) displays - Part 6-3: Measuring methods of image quality
IEC 62341-6-3:2017(E) specifies the standard measurement conditions and measuring methods for determining the image quality of organic light emitting diode (OLED) display panels and modules.
This second edition cancels and replaces the first edition published in 2012. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) the measuring method for viewing angle has been modified. Measurement of the half luminance angle, gamma distortion, and directional colour variation is added;
b) measurement method for colour characteristics is added;
c) additional explanation is added in static image resolution clause;
d) moving image resolution clause has been moved to Annex B.
The contents of the corrigendum of October 2019 have been included in this copy.
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IEC 62341-6-3 ®
Edition 2.0 2017-11
INTERNATIONAL
STANDARD
colour
inside
Organic light emitting diode (OLED) displays –
Part 6-3: Measuring methods of image quality
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IEC 62341-6-3 ®
Edition 2.0 2017-11
INTERNATIONAL
STANDARD
colour
inside
Organic light emitting diode (OLED) displays –
Part 6-3: Measuring methods of image quality
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.260 ISBN 978-2-8322-4977-2
– 2 – IEC 62341-6-3:2017 © IEC 2017
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, and abbreviated terms . 6
3.1 Terms and definitions . 6
3.2 Abbreviated terms . 7
4 Standard measuring equipment and coordinate system . 7
4.1 Light measuring device . 7
4.2 Viewing direction coordinate system . 8
4.3 Standard measuring environmental conditions . 9
4.4 Power supply . 9
4.5 Warm-up time . 10
4.6 Standard measuring dark-room conditions . 10
4.7 Standard set-up conditions . 10
5 Measuring methods . 10
5.1 Measuring methods for spatial image quality . 10
5.1.1 Viewing angle . 10
5.1.2 Colour characteristics . 17
5.1.3 Crosstalk . 22
5.1.4 Static image resolution . 25
5.2 Measuring methods for temporal image quality . 30
5.2.1 Flicker . 30
5.2.2 Grey-to-grey response time . 34
Annex A (informative) Simple matrix method for correcting the stray light of imaging
instruments . 36
A.1 Purpose . 36
A.2 Measuring method . 36
Annex B (informative) Measuring the moving picture perceptual resolution of a display . 38
B.1 Purpose . 38
B.2 Measuring conditions . 38
B.2.1 Measuring equipment . 38
B.2.2 Requirements for the camera system . 38
B.2.3 Requirements for test pattern . 38
B.2.4 Parameters for measuring condition . 40
B.2.5 Measurement procedure . 40
Bibliography . 42
Figure 1 – Representation of the viewing direction . 9
Figure 2 – DUT installation conditions . 10
Figure 3 – Conceptual geometry used for measuring the viewing angle range . 11
Figure 4 – 4 % window pattern for half luminance angle . 12
Figure 5 – Test pattern for gamma measurement . 14
Figure 6 – Example of linear regression of log(△L ) versus log(△V ) at normal
i j
direction (0°) . 15
Figure 7 – 4 % window pattern for measuring the ‘red’ primary colour . 18
Figure 8 – 4 % window pattern for each G, B, C, M, Y colour . 18
Figure 9 – Test pattern for gamut change of the colour scale . 20
Figure 10 – Example of the measurement results . 21
Figure 11 – Test pattern for colour desaturation . 22
Figure 12 – Standard measurement positions . 23
Figure 13 – Luminance measurement of 4 % window at P . 23
Figure 14 – Luminance measurement at P with windows A , A , A and A . 24
0 W1 W2 B3, B4
Figure 15 – Luminance measurement at P with windows A , A , A and A . 25
0 W5 W8 B5 B8
Figure 16 – Test pattern for effective resolution . 26
Figure 17 – Example of luminance window for one-line grilled input . 28
Figure 18 – Contrast modulation measurement . 29
Figure 19 – Apparatus arrangement . 30
Figure 20 – Temporal contrast sensitivity function . 32
Figure 21 – Example of flicker modulation waveform . 33
Figure 22 – Example of response time waveform . 35
Figure A.1 – Result of spatial stray light correction for an imaging photometer . 37
Figure B.1 – Example of grey levels . 39
Figure B.2 – Example of frequency based on full HD resolution . 39
Figure B.3 – Example of test signal for full HD . 40
Figure B.4 – Example of captured image and one-dimensional data . 41
Figure B.5 – Example of motion blur threshold point . 41
Table 1 – Working example for gamma distortion from viewing direction . 15
Table 2 – Reference areas for the colour reproduction range . 16
Table 3 – Example of measurement results for colour fidelity . 20
Table 4 – Example of measurement results for gamut change of colour scale . 20
Table 5 – Example of measurement results for 1 x 1 grilled colour desaturation . 21
Table 6 – Temporal contrast sensitivity function . 31
Table 7 – Example of reporting form of grey-to-grey response time . 35
Table B.1 – Six different grey levels . 39
– 4 – IEC 62341-6-3:2017 © IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
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ORGANIC LIGHT EMITTING DIODE (OLED) DISPLAYS –
Part 6-3: Measuring methods of image quality
FOREWORD
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