1、 IEC 61747-6-2 Edition 1.0 2011-06 INTERNATIONAL STANDARD NORME INTERNATIONALE Liquid crystal display devices Part 6-2: Measuring methods for liquid crystal display modules Reflective type Dispositifs daffichage cristaux liquides Partie 6-2: Mthodes de mesure pour les modules daffichage cristaux liq
2、uides Type rflexible IEC 61747-6-2:2011 colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2011 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, incl
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16、ous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 61747-6-2 Edition 1.0 2011-06 INTERNATIONAL STANDARD NORME INTERNATIONALE Liquid crystal display devices Part 6-2: Measuring methods for liquid crystal displa
17、y modules Reflective type Dispositifs daffichage cristaux liquides Partie 6-2: Mthodes de mesure pour les modules daffichage cristaux liquides Type rflexible INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XA ICS 31.120 PRICE CODE CODE PRIX ISBN 978-2-88912-507-4
18、 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale colour inside 2 61747-6-2 IEC:2011 CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Scope . 8 2 Normative references . 8 3 Illumination and illumination geometry 9 3.1 General
19、 comments and remarks on the measurement of reflective LCDs . 9 3.2 Viewing-direction coordinate system 9 3.3 Basic illumination geometries 10 3.4 Realization of illumination geometries . 10 3.4.1 General . 10 3.4.2 Directional illumination 11 3.4.3 Ring-light illumination 11 3.4.4 Conical illuminat
20、ion . 12 3.4.5 Hemispherical illumination . 12 4 Standard measurement equipment and set-up 13 4.1 Light measuring devices (LMD) . 13 4.2 Positioning and alignment . 13 4.3 Standard measurement arrangements . 13 4.3.1 General . 13 4.3.2 Directional illumination 14 4.3.3 Ring-light illumination 15 4.3
21、.4 Conical illumination . 15 4.3.5 Hemispherical illumination . 16 4.3.6 Other illumination conditions 17 4.4 Standard specification of measurement conditions 17 4.4.1 Illumination conditions . 17 4.4.2 LMD conditions 19 4.4.3 Unwanted effects of receiver inclination . 20 4.4.4 Control and suppressi
22、on of front-surface reflections 20 4.5 Working standards and references 21 4.5.1 Diffuse reflectance standard 21 4.5.2 Specular reflectance standard . 21 4.6 Standard locations of measurement field . 22 4.6.1 Matrix displays 22 4.6.2 Segment displays 22 4.7 Standard DUT operating conditions . 23 4.7
23、.1 General . 23 4.7.2 Standard ambient conditions . 23 4.8 Standard measuring process . 23 5 Standard measurements and evaluations . 24 5.1 Reflectance Photometric. 24 5.1.1 Purpose . 24 5.1.2 Measuring equipment 24 5.1.3 Measuring method . 24 5.1.4 Definitions and evaluations 25 5.2 Contrast ratio
24、26 61747-6-2 IEC:2011 3 5.2.1 Purpose . 26 5.2.2 Measuring equipment 26 5.2.3 Measurement method 26 5.2.4 Definitions and evaluations 27 5.3 Peak viewing direction / viewing angle range . 27 5.3.1 Purpose / definition 27 5.3.2 Measuring equipment 27 5.3.3 Viewing angle 27 5.3.4 Viewing angle range w
25、ithout gray-level inversion . 28 5.3.5 Specular reflectance from the active area surface . 29 5.4 Chromaticity 31 5.4.1 Purpose . 31 5.4.2 Measuring equipment 31 5.4.3 Measuring method . 31 5.4.4 Definitions and evaluations 31 5.4.5 Specified conditions 32 5.5 Electro-optical transfer function Photo
26、metric 33 5.5.1 Purpose . 33 5.5.2 Set-up . 33 5.5.3 Procedure 33 5.5.4 Evaluation and representation . 33 5.6 Electro-optical transfer function Colorimetric 34 5.6.1 Purpose . 34 5.6.2 Set-up . 34 5.6.3 Procedure 34 5.6.4 Evaluation and representation . 35 5.7 Lateral variations (photometric, color
27、imetric) . 35 5.7.1 Purpose . 35 5.7.2 Measuring equipment 35 5.7.3 Uniformity of reflectance 36 5.7.4 Uniformity of white . 36 5.7.5 Uniformity of chromaticity 37 5.7.6 Uniformity of primary colours . 37 5.7.7 Cross-talk 38 5.7.8 Specified conditions 40 5.8 Temporal variations . 40 5.8.1 Response t
28、ime 40 5.8.2 Flicker / frame response (multiplexed displays) . 43 5.8.3 Specified conditions 44 5.9 Electrical characteristics 45 5.9.1 Purpose . 45 5.9.2 Measuring instruments 45 5.9.3 Measuring method . 45 5.9.4 Definitions and evaluations 45 5.9.5 Specified conditions 46 Annex A (informative) Sta
29、ndard measuring conditions . 47 Bibliography 51 4 61747-6-2 IEC:2011 Figure 1 Representation of the viewing-direction (equivalent to the direction of measurement) by the angle of inclination, and the angle of rotation (azimuth angle), in a polar coordinate system 9 Figure 2 Directional illumination
30、with a flat source disk 10 Figure 3 Realization alternatives for directional illumination . 11 Figure 4 Examples of ring-light illumination 12 Figure 5 Examples of conical illumination with a spherical dome (left) and an integrating sphere with large aperture (right) . 12 Figure 6 Examples of hemisp
31、herical illumination 13 Figure 7 Side-view of the measuring set-up using directional illumination 14 Figure 8 Side-view of the ring-light illumination measuring set-up 15 Figure 9 Side-view of the conical illumination measuring set-up . 16 Figure 10 Side-view of the hemispherical illumination measur
32、ing set-up 17 Figure 11 Hemispherical illumination with gloss-trap (GT) opposite to receiver inclination . 18 Figure 12 Normalized illuminance at the location of the measuring spot . 18 Figure 13 Lines of equal chromaticity differences u (left), v (right) 19 Figure 14 Shape of measuring spot on DUT
33、for two angles of receiver inclination 20 Figure 15 Reflections from the first surface of a transparent medium (glass substrate, polarizer, etc.) superimposed to the reflection component that is modulated by the display device . 21 Figure 16 Standard measurement positions are at the centres of all r
34、ectangles p0- p24. Height and width of each rectangle is 20 % of display height and width respectively. . 22 Figure 17 Example of standard set-up for specular reflection measurements . 30 Figure 18 Example of equipment for measurement of temporal variations 41 Figure 19 Relationship between driving
35、signal and optical response times . 42 Figure 20 Frequency characteristics of the integrator (response of human visual system) . 44 Figure 21 Example of power spectrum . 44 Figure 22 Checker-flag pattern for current and power consumption measurements 45 Figure 23 Example of measuring block diagram f
36、or current and power consumption of a liquid crystal display device 46 Figure A.1 Coordinate system for measurement of the BRDF, index “i“ for incident light, index “r“ for reflected light. Directions are described by two angles, and (inclination and azimuth) in a polar coordinate system as shown 48
37、 Figure A.2 Terminology for LMDs . 49 61747-6-2 IEC:2011 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ LIQUID CRYSTAL DISPLAY DEVICES Part 6-2: Measuring methods for liquid crystal display modules Reflective type FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organiza
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47、) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rig
48、hts. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61747-6-2 has been prepared by IEC technical committee 110: Flat panel display devices. This standard should be read together with the generic specification to which it refers. The text o
49、f this standard is based on the following documents: FDIS Report on voting 110/281/FDIS 110/299/RVD Full information on the voting for the approval on this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. 6 61747-6-2 IEC:2011 A list of all the parts in
