IEC_61747-20-3-2016.pdf

IEC 61747-20-3 Edition 1.0 2016-02 INTERNATIONAL STANDARD Liquid crystal display devices Part 20-3:Visual inspection Active matrix colour liquid crystal display modules IEC 61747-20-3:2016-02(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by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,replaced and withdrawn publications.IEC Just Published-webstore.iec.ch/justpublished Stay up to date on all new IEC publications.Just Published details all new publications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 61747-20-3 Edition 1.0 2016-02 INTERNATIONAL STANDARD Liquid crystal display devices Part 20-3:Visual inspection Active matrix colour liquid crystal display modules INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 31.120 ISBN 978-2-8322-3210-1 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.colourinside 2 IEC 61747-20-3:2016 IEC 2016 CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative references.6 3 Terms,definitions and abbreviations.6 3.1 General.6 3.3 Abbreviations.11 4 Visual inspection method and criteria.11 4.1 Standard inspection conditions.11 4.1.1 Ambient conditions.11 4.1.2 Visual inspection conditions.12 4.1.3 Electrical driving conditions.12 4.2 Standard inspection method.12 4.2.1 Setup of inspection equipment and liquid crystal display modules.12 4.2.2 Inspector and limit sample for visual inspection.12 4.2.3 Inspection and record of result.12 4.3 Criteria.12 4.3.1 Bright subpixel defects.12 4.3.2 Dark subpixel defects.12 4.3.3 Intermediate subpixel defects.13 4.3.4 Cluster subpixel defects.13 4.3.5 Bright line defects.13 4.3.6 Dark line defects.13 4.3.7 Scratch and dent defects.13 4.3.8 Foreign material and bubble defects.13 4.3.9 Light leakage defects.14 Bibliography.15 Figure 1 Classification of defects by visual inspection.7 Figure 2 Examples of bright subpixel and adjacent subpixel defects in case of an RGB primary colour display.8 Figure 3 Examples of dark subpixel and adjacent subpixel defects in case of RGB primary colour display.9 Figure 4 Examples of minimum distance between subpixel defects.10 Figure 5 Example of light leakage between the top case and outer black matrix.11 Figure 6 Shape of scratch and dent defects.13 Figure 7 Shape of foreign material and bubble defects.14 Table 1 Criteria for scratch and dent defects.13 Table 2 Criteria for foreign material and bubble defects.14 IEC 61747-20-3:2016 IEC 2016 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ LIQUID CRYSTAL DISPLAY DEVICES Part 20-3:Visual inspection Active matrix colour liquid crystal display modules FOREWORD 1)The International Electrotechnical Commission(IE