1、 IEC 61747-40-4 Edition 1.0 2015-01 INTERNATIONAL STANDARD Liquid crystal display devices Part 40-4:Mechanical testing of display cover glass for mobile devices Biaxial flexural strength(ring-on-ring)IEC 61747-40-4:2015-01(en)THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2015 IEC,Geneva,Switzerl
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10、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 61747-40-4 Edition 1.0 2015-01 INTERNATIONAL STANDARD Liquid crystal display devices Part 40-4:Mechanical testing of display cover glass for mobile devi
11、ces Biaxial flexural strength(ring-on-ring)INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 31.120 ISBN 978-2-8322-2212-6 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.2 IEC 61747-40-4:2015 IEC 2
12、015 CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative references.6 3 Terms,definitions and abbreviations.6 3.1 Terms and definitions.6 3.2 Abbreviations.6 4 General.7 5 Apparatus.7 5.1 Testing environment and pre-conditioning.7 5.2 Testing frame.7 5.3 Test fixture and setup.9 5.4 Test fixture
13、 dimensions.11 5.5 Loading rate.11 6 Procedure.11 6.1 Safety.11 6.1.1 Hazard Broken glass.11 6.1.2 Crush hazard Only one person may operate the testing frame.11 6.1.3 Crush hazard Take care when installing or removing a specimen.11 6.1.4 Hazard Press the emergency stop button when an unsafe conditio
14、n is observed.12 6.1.5 Flying debris hazard Ensure that specimens are installed correctly.12 6.1.6 Hazard Protect control cables from damage or disconnection.12 6.2 Sample.12 6.3 Individual specimen.12 6.4 Complete the report.14 7 Calculations.15 8 Reporting.16 8.1 Information to be reported for eac
15、h test.16 8.2 Information to be made available upon request.16 9 Specifications.16 Bibliography.18 Figure 1 Testing frame.8 Figure 2 Support assembly(side view,cross-section).9 Figure 3 Support assembly(top view).9 Figure 4 Load assembly(side view,cross-section).10 Figure 5 Load assembly(bottom view
16、).10 Figure 6 Surface fracture originating from inside the load ring.13 Figure 7 Surface fracture originating from underneath the load ring.14 Figure 8 Edge fracture originating from outside the load ring.14 Figure 9 Example Weibull plot.16 IEC 61747-40-4:2015 IEC 2015 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ LIQUID CRYSTAL DISPLAY DEVICES Part 40-4:Mechanical testing of display cover glass for mobile devices Biaxial flexural strength(ring-on-ring)FOREWORD 1)The International Electrotechnic
