IEC_61747-30-4-2016.pdf

IEC 61747-30-4 Edition 1.0 2016-08 INTERNATIONAL STANDARD Liquid crystal display devices Part 30-4:Measuring methods for liquid crystal display modules Dynamic backlight units IEC 61747-30-4:2016-08(en)colourinside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2016 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,including photocopying and microfilm,without permission in writing from either IEC or IECs member National Committee in the country of the requester.If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,please contact the address below or your local IEC member National Committee for further information.IEC Central Office Tel.:+41 22 919 02 11 3,rue de Varemb Fax:+41 22 919 03 00 CH-1211 Geneva 20 infoiec.ch Switzerland www.iec.ch About the IEC The International Electrotechnical Commission(IEC)is the leading global organization that prepares and publishes International Standards for all electrical,electronic and related technologies.About IEC publications The technical content of IEC publications is kept under constant review by the IEC.Please make sure that you have the latest edition,a corrigenda or an amendment might have been published.IEC Catalogue-webstore.iec.ch/catalogue The stand-alone application for consulting the entire bibliographical information on IEC International Standards,Technical Specifications,Technical Reports and other documents.Available for PC,Mac OS,Android Tablets and iPad.IEC publications search-www.iec.ch/searchpub The advanced search enables to find IEC publications by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,replaced and withdrawn publications.IEC Just Published-webstore.iec.ch/justpublished Stay up to date on all new IEC publications.Just Published details all new publications released.Available online and also once a month by email.Electropedia-www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing 20 000 terms and definitions in English and French,with equivalent terms in 15 additional languages.Also known as the International Electrotechnical Vocabulary(IEV)online.IEC Glossary-std.iec.ch/glossary 65 000 electrotechnical terminology entries in English and French extracted from the Terms and Definitions clause of IEC publications issued since 2002.Some entries have been collected from earlier publications of IEC TC 37,77,86 and CISPR.IEC Customer Service Centre-webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance,please contact the Customer Service Centre:csciec.ch.IEC 61747-30-4 Edition 1.0 2016-08 INTERNATIONAL STANDARD Liquid crystal display devices Part 30-4:Measuring methods for liquid crystal display modules Dynamic backlight units INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 31.120 ISBN 978-2-8322-3608-6 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.colourinside 2 IEC 61747-30-4:2016 IEC 2016 CONTENTS FOREWORD.4 1 Scope.6 2 Normative references.6 3 Terms,definitionsand abbreviations.6 3.1 Terms and definitions.6 3.2 Abbreviations.6 4 Standard measuring equipment.7 5 Measuring conditions.7 5.1 Standard measuring environmental conditions.7 5.2 Power supply.7 5.3 Warm-up time.7 5.4 Standard measuring dark-room conditions.8 5.5 Standard set-up conditions.8 5.6 Signal patterns.8 5.6.1 Full screen pattern.8 5.6.2 Checkerboard patterns.9 5.6.3 Increasing window patterns.9 5.6.4 Line patterns.10 5.6.5 Moving image.10 5.6.6 Video signal.11 6 Measuring methods.11 6.1 Optical performance.11 6.1.1 Luminance and uniformity.11 6.1.2 Chromaticity and uniformity.12 6.1.3 Window size dependence of luminance and chromaticity.14 6.1.4 Contrast ratio.15 6.1.5 Flicker.16 6.1.6 Judder.19 6.2 Power consumption.21 6.2.1 Static power consumption.21 6.2.2 Dynamic power consumption.22 Annex A(informative)Example of flicker measurement.23 Bibliography.26 Figure 1 DUT set-up conditions.8 Figure 2 Full screen pattern.9 Figure 3 Checkerboard patterns.9 Figure 4 Increasing window patterns.10 Figure 5 Line patterns.10 Figure 6 Moving image.11 Figure 7 Example of input signal level dependence on chromaticity.13 Figure 8 Window size dependence on luminance and chromaticity.15 Figure 9 Apparatus arrangement.17 Figure 10 Temporal contrast sensitivity function.18 Figure 11 Example of the luminance waveform by weighting TCSF.19 IEC 61747-30-4:2016 IEC 2016 3 Figure 12 Dynamic curve of the judder.21 Figure A.1 Luminance as a function of time L(t).23 Figure A.2 Power spectrum with Fourier Transform.23 Figure A.3 Perceptive power spectrum of example flicker.24 Figure A.4 Luminance of example screen flicker by weighting TCSF.24 Table 1 A