1、 IEC 61747-5-3 Edition 1.0 2009-04 INTERNATIONAL STANDARD NORME INTERNATIONALE Liquid crystal display devices Part 5-3: Environmental, endurance and mechanical test methods Glass strength and reliability Dispositifs daffichage cristaux liquides Partie 5-3: Mthodes dessais denvironnement, dendurance
2、et mcaniques Rsistance et fiabilit du verre IEC 61747-5-3:2009 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2009 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 mechani
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16、n ou si vous 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 61747-5-3 Edition 1.0 2009-04 INTERNATIONAL STANDARD NORME INTERNATIONALE Liquid crystal display devices Part 5-3: Environmental, endurance and mecha
17、nical test methods Glass strength and reliability Dispositifs daffichage cristaux liquides Partie 5-3: Mthodes dessais denvironnement, dendurance et mcaniques Rsistance et fiabilit du verre INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE R ICS 31.120 PRICE CODE C
18、ODE PRIX ISBN 2-8318-1037-8 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 61747-5-3 IEC:2009 CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative references .6 3 Terms and definitions .6 4 Abbreviated terms 7
19、 5 Apparatus.7 5.1 General .7 5.2 Method A: Quasistatic biaxial strength.8 5.3 Method B: Quasistatic edge strength (parent glass).8 5.4 Method C: Quasistatic strength (module).9 5.5 Method D: Fatigue constant.10 6 Test sample10 6.1 General .10 6.2 Parent glass 11 6.3 Full size module 11 7 Procedure:
20、 Quasistatic loading.11 8 Stress calculations .11 8.1 General .11 8.2 Quasistatic biaxial strength (parent glass) .11 8.3 Quasistatic edge strength (parent glass) .12 8.4 Quasistatic failure load (LCD module) .12 9 Fatigue and reliability calculations12 9.1 General .12 9.2 Fatigue constant calculati
21、on 13 9.3 Weibull parameter calculation from dynamic failure stress data .13 9.4 Fatigue constant calculation 13 10 Reporting requirements 14 Annex A (informative) Worked test example.15 Bibliography18 Figure 1 Schematic of ROR test fixture for measuring biaxial strength of parent glass .8 Figure 2
22、Vertical bend test fixture for measuring the edge strength of parent glass9 Figure 3 Schematic of strength measurement for full-size LCD module 10 Figure A.1 Weibull plot of biaxial strength of abraded glass with different thicknesses .15 Figure A.2 Fracture surface of parent glass with 0,089 mm mir
23、ror radius .16 Figure A.3 Plot of calculated strength versus 1/square root of mirror radius .16 Figure A.4 Weibull distribution of the strength of 17” module17 Table A.1 Example of strength data before and after abrasion .15 Table A.2 Example of strength data for all modules and low strength modules
24、17 61747-5-3 IEC:2009 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ LIQUID CRYSTAL DISPLAY DEVICES Part 5-3: Environmental, endurance and mechanical test methods Glass strength and reliability FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardiz
25、ation comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes Internat
26、ional Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in
27、 this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the
28、 two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have
29、 the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misin
30、terpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding nation
31、al or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition o
32、f this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct o
33、r indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable
34、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 rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61747-5-3 has b
35、een prepared by IEC technical committee 110: Flat panel display devices. This International Standard replaces the IEC/PAS 61747-5-3, published in 2007. There have been no significant revisions since the publication of the PAS version. This part of IEC 61747 is a sectional specification for liquid cr
36、ystal display cells. It is to be read in conjunction with the IEC 61747-1 to which it refers. 4 61747-5-3 IEC:2009 The text of this standard is based on the following documents: FDIS Report on voting 110/169/FDIS 110/177/RVD Full information on the voting for the approval of this standard can be fou
37、nd in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. Future standards in this series will carry the new general title as cited above. Titles of existing standards in this series will be updated at the time of th
38、e next edition. A list of all parts of the IEC 61747 series, under the general title Liquid crystal display devices, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site
39、under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. 61747-5-3 IEC:2009 5 INTRODUCTION IEC 61747-5-3 facilitates the characterization of mechanical strength properties o
40、f LCD modules and their component glass. Analysis and testing are performed on LCD Module component glass as well as finished LCD modules. Statistics of mechanical strength of the modules are determined allowing a prediction of module failure probability at a given stress level or for a given probab
41、ility of failure, the maximum recommended safe loading stress for the module. 6 61747-5-3 IEC:2009 LIQUID CRYSTAL DISPLAY DEVICES Part 5-3: Environmental, endurance and mechanical test methods Glass strength and reliability 1 Scope This part of IEC 61747 applies to commercially available liquid crys
42、tal displays (LCDs). This standard applies to all LCD types, including transmissive, reflective or transflective liquid crystal display (LCD) modules using either segment, passive or active matrix and achromatic or colour type LCDs that are equipped with their own integrated source of illumination o
43、r without their own source of illumination. The objective of this standard is to establish uniform requirements for accurate and reliable measurements of the following LCD parameters: a) quasistatic strength, b) quasistatic fatigue. The methods described in this standard apply to all sizes, small an
44、d large, liquid crystal displays. NOTE Methods for measuring the fatigue constant are described in this standard and are taken from the referenced literature, see 13 1to 20. The primary results are formulae for estimated allowable stress for the specified lifetime or estimated failure rate for the s
45、pecified stress level. As an example, limited data for strength and fatigue behaviour of LCD glass are included in an informative Annex A. Similarly, limited data for static strength of LCD modules are also included and compared with that of parent glass. 2 Normative references The following referen
46、ced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 61747-1, Liquid crystal and solid-state display devices Part 1: Ge
47、neric specification IEC 61747-5:1998, Liquid crystal and solid-state display devices Part 5: Environmental, endurance and mechanical test methods 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 strength stress at which a sample fails for a gi
48、ven loading condition 3.2 LCD surface strength biaxial strength wherein surface flaws with different orientations are subjected to uniform tension during measurement 1Figures in square brackets refer to the bibliography. 61747-5-3 IEC:2009 7 NOTE Refer to 1 to 4 in the bibliography for further infor
49、mation. 3.3 LCD edge strength uniaxial strength wherein edge flaws are subjected to tension during measurement NOTE Refer to 5 to 8 in the bibliography for further information. 3.4 LCD (mechanical) reliability either an estimated allowable stress which the LCDs can sustain for a specified period of time or as an estimated failure rate at a specified stress le
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