IEC 62341-6-4:2017(E) specifies the standard measurement conditions and measuring methods for determining the optical performance of transparent properties of organic light emitting diode (OLED) display panels and modules. This document includes the display performance under darkroom conditions, and front and back illumination.<\/p>\n
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| 2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4 Measuring conditions 4.1 Standard measuring environmental conditions 4.2 Standard lighting conditions 4.2.1 Darkroom conditions 4.2.2 Ambient illumination conditions <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 4.2.3 Ambient illumination spectra 4.3 Standard setup conditions 4.3.1 Starting conditions of measurements Tables Table 1 \u2013 Standard ambient conditions <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 4.3.2 Conditions of measuring equipment Figures Figure 1 \u2013 Layout diagram of measurement setup <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 5 Measuring methods of transparent properties 5.1 Measuring methods of transmission performance 5.1.1 Hemispherical transmittance factor with specular included <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 5.1.2 Transmitted haze under hemispherical illumination Figure 2 \u2013 Side view of measuring concept for the hemispherical transmittance factor measurement with specular included or excluded <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 5.1.3 Directional transmittance factor Figure 3 \u2013 Schematic arrangement of haze measurement Table 2 \u2013Measuring conditions of the ports <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 5.1.4 Measurement method of purity Figure 4 \u2013 Side view of measuring concept for the hemispherical transmittance factor measurement with specular included or excluded <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Figure 5 \u2013 Measuring configuration for purity measurement Figure 6 \u2013 Test patterns for purity measurement <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 5.1.5 Colour variation caused by a transparent display Table 3 \u2013 Measured example for purity <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 5.2 Measuring methods of on-screen performance in a darkroom 5.2.1 Luminance and its uniformity Table 4 \u2013 Working example for colour variation index <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | Figure 7 \u2013 Test pattern for 4 % window luminance <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | Figure 8 \u2013 Example of luminance loading measurement Table 5 \u2013 Worked example for luminance loading <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 5.2.2 Chromaticity and colour non-uniformity Figure 9 \u2013 Measurement locations Table 6 \u2013 Example of luminance non-uniformity <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 5.2.3 Darkroom contrast ratio Table 7 \u2013 Example of colour uniformity measurement <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 5.2.4 Grey scale and gamma characteristics <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Figure 10 \u2013 Measuring patterns for gamma measurement Table 8 \u2013 Example of gamma measurement <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 5.2.5 Colour gamut <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Table 9 \u2013 Reference areas for the colour reproduction range Table 10 \u2013 Example of measurement for the colour gamut variation ratio <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | 5.2.6 Directional optical characteristics <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | 6 Measuring methods of reflection properties 6.1 Hemispherical reflectance factor with specular included 6.1.1 Purpose 6.1.2 Measuring conditions 6.1.3 Measuring method Table 11 \u2013 Example of measurement for the directional electro-optical characteristic <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | 6.2 Directional reflectance factor 6.2.1 Purpose 6.2.2 Measuring conditions 6.2.3 Measuring method 7 Optical on-screen performance under ambient illumination 7.1 Ambient contrast ratio 7.1.1 Purpose <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | 7.1.2 Measuring conditions 7.1.3 Measuring method <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | 7.2 Display ambient colour measurement 7.2.1 Purpose 7.2.2 Measuring conditions <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | 7.2.3 Measuring method <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | Annex A (normative)Alternative method for measuring the hemispherical transmittance factor of a transparent OLED display A.1 Purpose A.2 Measuring conditions A.3 Measuring the transmittance <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | Figure A.1 \u2013 Measurement geometry using a sampling sphere <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Organic light emitting diode (OLED) displays – Measuring methods of transparent properties<\/b><\/p>\n |