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.<\/p>\n
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| 6<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 1 Scope 2 Normative references 3 Terms, definitions and abbreviations 3.1 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 3.2 Abbreviations 4 Structure of measuring equipment 5 Standard measuring conditions 5.1 Standard measuring environmental conditions <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 5.2 Standard lighting conditions 5.2.1 Dark-room conditions 5.2.2 Ambient illumination conditions Figures Figure 1 \u2013 Example of visual inspection room setup for control of ambient room lighting and reflections <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | Figure 2 \u2013 Example of measurement geometries for diffuse illumination condition using an integrating sphere and sampling sphere <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 5.3 Standard setup conditions 5.3.1 General 5.3.2 Adjustment of OLED display modules Figure 3 \u2013 Directional source measurement geometry using an isolated source Figure 4 \u2013 Directional source measurement geometry using a ring light source <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 5.3.3 Starting conditions of measurements 5.3.4 Conditions of measuring equipment Figure 5 \u2013 Layout diagram of measurement set up <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 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 \u2013 Classification of visible defects <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Figure 7 \u2013 Bright subpixel defects <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 6.2.3 Reference example for line defects 6.2.4 Reference example for mura defects Figure 8 \u2013 Criteria for classifying bright and dark subpixel defects Figure 9 \u2013 Bright and dark line defects <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 6.3 Visual inspection method and criteria 6.3.1 Standard inspection conditions Figure 10 \u2013 Sample image of line mura defect associated with TFT non-uniformity Figure 11 \u2013 Example of spot mura defect in a grey background <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 6.3.2 Standard inspection method <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Figure 12 \u2013 Setup condition for visual inspection of electro-optical visual defects <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 6.3.3 Inspection criteria <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 7 Electro-optical measuring methods under ambient illumination 7.1 Reflection measurements 7.1.1 Purpose 7.1.2 Measuring conditions Figure 13 \u2013 Shape of scratch and dent defect Tables Table 1 \u2013 Definitions for type of scratch and dent defects <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 7.1.3 Measuring the hemispherical diffuse reflectance factor <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Table 2 \u2013 Eigenvalues M1 and M2 for CIE Daylight Illuminants D50 and D75 <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 7.1.4 Measuring the reflectance factor for a directed light source <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 7.2 Ambient contrast ratio 7.2.1 Purpose 7.2.2 Measuring conditions <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | 7.2.3 Measuring method 7.3 Ambient display colour 7.3.1 Purpose 7.3.2 Measuring conditions 7.3.3 Measuring method <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | 7.4 Ambient colour gamut volume 7.4.1 Purpose <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | 7.4.2 Measuring conditions 7.4.3 Measuring method Table 3 \u2013 Example of minimum colours required for gamut volume calculation of a 3-primary 8-bit display <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | 7.4.4 Reporting Figure 14 \u2013 An example of range in colours produced by a given display as represented by the CIELAB colour space <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | Table 4 \u2013 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 \u2013 Calculated white point in the darkened room and ambient condition Table 6 \u2013 Colour gamut volume in the CIELAB colour space <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | Annex\u00a0A (informative) Measuring relative photoluminescence contribution from displays <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | Figure A.1 \u2013 Scaled bi-spectral photoluminescence response from a display Figure A.2 \u2013 Decomposed bi-spectral photoluminescence response from a display <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | Annex B (informative) Calculation method of ambient colour gamut volume Figure B.1 \u2013 Analysis flow chart for calculating the colour gamut volume <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | Figure B.2 \u2013 Graphical representation of the colour gamut volume for sRGB in the CIELAB colour space Table B.1 \u2013 Tristimulus values of the sRGB primary colours Table B.2 \u2013 Example of sRGB colour set represented in the CIELAB colour space <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | Table B.3 \u2013 Example of sRGB colour gamut volume in the CIELAB colour space <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Organic light emitting diode (OLED) displays – Measuring methods of visual quality and ambient performance<\/b><\/p>\n |