IEC IEC61747-20-1 Edition1.02015-02 INTERNATIONAL STANDARD Liquidcrystaldisplaydevices.- Part20-1:Visual inspection-Monochrome liquid crystal display cells (excludingallactivematrixliquidcrystaldisplaycells) IEC 61747-20-1:2015-02(en) THISPUBLICATIONISCOPYRIGHTPROTECTED Copyright2015IEC,Geneva,Switzerland orbyanymeans,electronicormechanical,includingphotocopyingandmicrofilm,withoutpermission in writingfrom either IEC or IEC's member National Committee in the country of therequester.If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,please contact theaddress below or yourlocal IECmemberNational Committeeforfurther information. IECCentral Office Tel.: +41 22 919 02 11 3,ruedeVarembe Fax:+41229190300 CH-1211Geneva 20 [email protected] Switzerland www.iec.ch AbouttheIEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standardsforallelectrical,electronicandrelatedtechnologies. AboutIECpublications latestedition,acorrigendaoranamendmentmighthavebeenpublished. IECCatalogue-webstore.iec.ch/catalogue Electropedia-www.electropedia.org The stand-aloneapplication for consulting theentire The world's leading online dictionary of electronic and bibliographical information on IEc Intemational Standards, electrical terms containing more than 30 000 terms and Technical Specifications, Technical Reports and other definitionsinEnglishandFrench,withequivalenttermsin15 documents.AvailableforPC,Mac OS,Android Tablets and additional languages.Also known as the International iPad. Electrotechnical Vocabulary(IEV)online. IECpublicationssearch-www.iec.ch/searchpub IECGlossary-std.iec.ch/glossary The advanced search enables to find IEC publications bya More than 60 000 electrotechnical terminology entries in variety of criteria (reference number, text,technical English and French extractedfrom the Terms and Definitions clause of IEC publications issued since 2002.Some entries have been collected from earlierpublications ofIEC TC 37, andwithdrawnpublications. 77,86andCISPR. IEcJustPublished-webstore.iec.ch/justpublished Stay up to date on all new IEC publications.Just Published IECCustomer ServiceCentre-webstore.iec.ch/csc details allnewpublicationsreleased.Availableonlineand If you wish to give us yourfeedback on this publication or also oncea monthby email. needfurtherassistance,please contacttheCustomerService Centre:[email protected]. IEC IEC61747-20-1 Edition1.02015-02 INTERNATIONAL STANDARD Liquidcrystaldisplaydevices- Part20-1:Visual inspection-Monochromeliquidcrystaldisplaycells (excludingall activematrix liquid crystal displaycells) INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS31.120 ISBN 978-2-8322-2256-0 Warning! Make sure that you obtained this publication from an authorized distributor.