BS EN 62341-6-2:2012
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Organic light emitting diode (OLED) displays – Measuring methods of visual quality and ambient performance
| Published By | Publication Date | Number of Pages |
| BSI | 2012 | 48 |
This part of IEC 62341 specifies the standard measurement conditions and measurement methods for determining the visual quality and ambient performance of organic light-emitting diode (OLED) display modules and panels. This document mainly applies to colour display modules.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | English CONTENTS |
| 8 | 1 Scope 2 Normative references 3 Terms, definitions and abbreviations 3.1 Terms and definitions |
| 11 | 3.2 Abbreviations 4 Structure of measuring equipment 5 Standard measuring conditions 5.1 Standard measuring environmental conditions |
| 12 | 5.2 Standard lighting conditions 5.2.1 Dark-room conditions 5.2.2 Ambient illumination conditions Figures Figure 1 – Example of visual inspection room setup for control of ambient room lighting and reflections |
| 15 | Figure 2 – Example of measurement geometries for diffuse illumination condition using an integrating sphere and sampling sphere |
| 17 | 5.3 Standard setup conditions 5.3.1 General 5.3.2 Adjustment of OLED display modules Figure 3 – Directional source measurement geometry using an isolated source Figure 4 – Directional source measurement geometry using a ring light source |
| 18 | 5.3.3 Starting conditions of measurements 5.3.4 Conditions of measuring equipment Figure 5 – Layout diagram of measurement set up |
| 19 | 6 Visual inspection of static images 6.1 General 6.2 Classification of visible defects 6.2.1 Classification scheme 6.2.2 Reference examples for subpixel defects Figure 6 – Classification of visible defects |
| 20 | Figure 7 – Bright subpixel defects |
| 21 | 6.2.3 Reference example for line defects 6.2.4 Reference example for mura defects Figure 8 – Criteria for classifying bright and dark subpixel defects Figure 9 – Bright and dark line defects |
| 22 | 6.3 Visual inspection method and criteria 6.3.1 Standard inspection conditions Figure 10 – Sample image of line mura defect associated with TFT non-uniformity Figure 11 – Example of spot mura defect in a grey background |
| 23 | 6.3.2 Standard inspection method |
| 24 | Figure 12 – Setup condition for visual inspection of electro-optical visual defects |
| 25 | 6.3.3 Inspection criteria |
| 26 | 7 Electro-optical measuring methods under ambient illumination 7.1 Reflection measurements 7.1.1 Purpose 7.1.2 Measuring conditions Figure 13 – Shape of scratch and dent defect Tables Table 1 – Definitions for type of scratch and dent defects |
| 27 | 7.1.3 Measuring the hemispherical diffuse reflectance factor |
| 28 | Table 2 – Eigenvalues M1 and M2 for CIE Daylight Illuminants D50 and D75 |
| 29 | 7.1.4 Measuring the reflectance factor for a directed light source |
| 31 | 7.2 Ambient contrast ratio 7.2.1 Purpose 7.2.2 Measuring conditions |
| 32 | 7.2.3 Measuring method 7.3 Ambient display colour 7.3.1 Purpose 7.3.2 Measuring conditions 7.3.3 Measuring method |
| 33 | 7.4 Ambient colour gamut volume 7.4.1 Purpose |
| 34 | 7.4.2 Measuring conditions 7.4.3 Measuring method Table 3 – Example of minimum colours required for gamut volume calculation of a 3-primary 8-bit display |
| 35 | 7.4.4 Reporting Figure 14 – An example of range in colours produced by a given display as represented by the CIELAB colour space |
| 36 | Table 4 – Measured tristimulus values for the minimum set of colours (see Table 3) required for gamut volume calculation under the specified ambient illumination condition Table 5 – Calculated white point in the darkened room and ambient condition Table 6 – Colour gamut volume in the CIELAB colour space |
| 37 | Annex A (informative) Measuring relative photoluminescence contribution from displays |
| 38 | Figure A.1 – Scaled bi-spectral photoluminescence response from a display Figure A.2 – Decomposed bi-spectral photoluminescence response from a display |
| 40 | Annex B (informative) Calculation method of ambient colour gamut volume Figure B.1 – Analysis flow chart for calculating the colour gamut volume |
| 41 | Figure B.2 – Graphical representation of the colour gamut volume for sRGB in the CIELAB colour space Table B.1 – Tristimulus values of the sRGB primary colours Table B.2 – Example of sRGB colour set represented in the CIELAB colour space |
| 42 | Table B.3 – Example of sRGB colour gamut volume in the CIELAB colour space |
| 46 | Bibliography |
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BS EN 62341-6-2:2012
Organic light emitting diode (OLED) displays – Measuring methods of visual quality and ambient performance…
