BS EN 61747-30-1:2012
$198.66
Liquid crystal display devices – Measuring methods for liquid crystal display modules. Transmissive type
| Published By | Publication Date | Number of Pages |
| BSI | 2012 | 52 |
IEC 61747-30-1:2012 is restricted to transmissive liquid crystal display-modules using either segment, passive or active matrix and achromatic or colour type LCDs. Furthermore, the transmissive modes of transflective LCD modules with backlights ON are comprised in this document. An LCD module in combination with a touch-panel or a front-light-unit is excluded from the scope because measurements are frequently inaccurate. Touch-panels or front-light-units are removed before measurement. Throughout the main body of this standard, an integrated backlight is assumed to provide the illumination for the measurements. Deviations from this (e.g. segmented displays without integrated backlights) may usually be handled in the same way as display modules with integrated backlight, if an external backlight is provided. However, in the case where one of the two situations should be handled differently, this will be specifically stated. This first edition cancels and replaces IEC 61747-6 published in 2004. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) the document structure was brought in line with 61747-6-2; and b) various technical and editorial changes were made. This publication is to be read in conjunction with /2.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | English CONTENTS |
| 9 | INTRODUCTION |
| 10 | 1 Scope 2 Normative references 3 Terms, definitions and abbreviations 3.1 Terms and definitions |
| 11 | 3.2 Abbreviations 4 Illumination and illumination geometry 4.1 General comments and remarks on the measurement of transmissive LCDs 4.2 Viewing-direction coordinate system |
| 12 | 4.3 Standard illumination geometries Figures Figure 1 – Representation of the viewing-direction (equivalent to the direction of measurement) by the angle of inclination,θ and the angle of rotation (azimuth angle), θ in a polar coordinate system |
| 13 | 5 Standard measurement equipment and set-up 5.1 Light measuring devices (LMD) 5.2 Positioning and alignment 5.3 Standard measurement arrangements 5.3.1 LMD conditions 5.3.2 Effects of receiver inclination |
| 14 | 5.4 Standard locations of measurement field 5.4.1 Matrix displays Figure 2 – Shape of measuring spot on DUT for two angles of LMD inclination Figure 3 – Standard measurement positions are at the centres of all rectangles p0-p24. |
| 15 | 5.4.2 Segment displays 5.5 Standard DUT operating conditions 5.5.1 General 5.5.2 Standard ambient conditions 5.6 Standard measuring process |
| 16 | 6 Standard measurements and evaluations 6.1 Luminance – photometric 6.1.1 Purpose 6.1.2 Measurement equipment 6.1.3 Measurement method |
| 17 | 6.1.4 Definitions and evaluations 6.2 Contrast ratio 6.2.1 Purpose 6.2.2 Measurement equipment 6.2.3 Measurement method |
| 18 | 6.2.4 Definitions and evaluations 6.2.5 Specified conditions |
| 19 | 6.3 Chromaticity and reproduction of colour 6.3.1 Purpose 6.3.2 Measurement equipment 6.3.3 Measurement method: photoelectric tristimulus colorimetry 6.3.4 Measurement method spectrophotometric colorimetry 6.3.5 Definitions and evaluations |
| 21 | 6.3.6 Specified conditions 6.4 Viewing angle range 6.4.1 Purpose 6.4.2 Measurement equipment 6.4.3 Contrast and luminance based viewing angle range |
| 22 | 6.4.4 Viewing angle range without grey-level inversion |
| 23 | 6.4.5 Chromaticity based viewing angle range 6.4.6 Visual quality-based viewing angle range Figure 4 – Example of grey-scale inversion |
| 24 | 6.5 Electro-optical transfer function – photometric 6.5.1 Purpose 6.5.2 Measurement equipment 6.5.3 Measurement method 6.5.4 Evaluation and representation |
| 25 | 6.6 Electro-optical transfer function – colorimetric 6.6.1 Purpose 6.6.2 Set-up 6.6.3 Measurement method 6.6.4 Definitions and evaluations |
| 26 | 6.7 Lateral variations (photometric, colorimetric) 6.7.1 Purpose 6.7.2 Measurement equipment 6.7.3 Uniformity of luminance |
| 27 | 6.7.4 Uniformity of white 6.7.5 Uniformity of chromaticity 6.7.6 Uniformity of primary colours |
| 28 | 6.7.7 Cross-talk |
| 30 | 6.7.8 Mura 6.7.9 Image sticking 6.7.10 Specified conditions 6.8 Reflectance from the active area surface 6.8.1 Purpose |
| 31 | 6.8.2 Measurement equipment 6.8.3 Measurement method Figure 5 – Example of standard set-up for specular reflection measurements |
| 32 | 6.8.4 Definitions and evaluation 6.8.5 Specified conditions 6.9 Spectral transmittance factor 6.9.1 Purpose |
| 33 | 6.9.2 Measurement equipment 6.9.3 Definitions and evaluation |
| 34 | 6.10 Temporal variations 6.10.1 Response time Figure 6 – Example of equipment for measurement of temporal variations |
| 36 | 6.10.2 Flicker / frame response (multiplexed displays) Figure 7 – Relationship between driving signal and optical response times |
| 37 | Figure 8 – Frequency characteristics of the integrator (response of human visual system) |
| 38 | 6.10.3 Critical flicker frequency 6.10.4 Specified conditions Figure 9 – Example of power spectrum |
| 39 | 6.11 Electrical characteristics 6.11.1 Purpose 6.11.2 Measurement equipment 6.11.3 Measurement method Figure 10 – Checker-flag pattern for current and power consumption measurements |
| 40 | 6.11.4 Definitions and evaluations 6.11.5 Specified conditions |
| 41 | 6.12 Warm-up characteristics 6.12.1 Purpose 6.12.2 Measurement equipment 6.12.3 Measurement method Figure 11 – Example of measuring block diagram for currentand power consumption of a liquid crystal display device |
| 42 | 6.12.4 Specified conditions Figure 12 – Example of warm-up characteristic |
| 43 | Annex A (informative) Standard measuring conditions |
| 44 | Figure A.1 – Terminology for LMDs |
| 46 | Annex B (informative) Devices for thermostatic control |
| 47 | Annex C (informative) Measuring the electro-optical transfer function |
| 48 | Annex D (informative) Planned future structure |
| 49 | Bibliography |
