1、 IEC 61747-2 Edition 2.0 2015-04 INTERNATIONAL STANDARD Liquid crystal display devices Part 2: Liquid crystal display modules Sectional specification IEC 61747-2:2015-04(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2015 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specifie
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10、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 61747-2 Edition 2.0 2015-04 INTERNATIONAL STANDARD Liquid crystal display devices Part 2: Liquid crystal display modules Sectional specification
11、INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 31.120 ISBN 978-2-8322-2569-1 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. 2 IEC 61747-2:2015 IEC 2015 CONTENTS FOREWORD . 3 1 Scope 5 2 Normat
12、ive reference 5 3 Terms and definitions. 5 4 Quality assessment procedure . 6 4.1 Primary stage of manufacture 6 4.2 Manufacturing process 6 4.2.1 General . 6 4.2.2 Major changes in manufacturing process 6 4.3 Subcontracting 7 4.4 Structural similarity procedures . 7 4.4.1 General . 7 4.4.2 Structur
13、ally similar modules . 7 4.4.3 Test-dependent criteria for structural similarity . 7 4.5 Qualification approval procedure . 8 4.6 Quality conformance inspection . 8 4.6.1 General . 8 4.6.2 Division into groups and subgroups 8 4.6.3 Groups and categories . 8 4.6.4 Group A Lot-by-lot inspections 8 4.6
14、.5 Group B Lot-by-lot inspections 8 4.6.6 Group C Periodic tests 9 4.6.7 Group D Periodic tests 9 4.6.8 Dimensions to be checked . 9 4.6.9 Sampling requirements (fixed sampling sizes) 9 4.7 Capability approval procedure . 9 4.8 Screening 9 4.9 Delayed deliveries . 9 5 Test and measurement procedures
15、 9 Table 1 Test-dependent criteria for structural similarity . 10 Table 2 Inspection requirements for qualification approval test 11 Table 3 Groups and categories of assessed quality 12 Table 4 Group A Lot-by-lot inspections 12 Table 5 Group B Lot-by-lot inspections 12 Table 6 Group C Periodic inspe
16、ctions 13 Table 7 Sampling requirements for group A tests 13 Table 8 Sampling requirements for group B and C tests 14 Table 9 Screening test item and conditions . 14 IEC 61747-2:2015 IEC 2015 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ LIQUID CRYSTAL DISPLAY DEVICES Part 2: Liquid crystal display
17、modules Sectional specification FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions c
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24、s provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to I
25、EC 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 or indirect, or for costs (including legal fees) and e
26、xpenses 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 for the correct application of this publication. 9) A
27、ttention 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 61747-2 has been prepared by IEC technical committee 110: Electronic
28、 display devices. This International Standard is to be used in conjunction with IEC 61747-1-1:2014. This second edition cancels and replaces the first edition published in 1998. This edition constitutes a technical revision. This edition includes the following significant technical changes with resp
29、ect to the previous edition: a) This version is applicable only for liquid crystal displays. b) All the references to IECQ and QC were removed in accordance with ISO/IEC Directives. c) The normative references were updated. 4 IEC 61747-2:2015 IEC 2015 The text of this standard is based on the follow
30、ing documents: CDV Report on voting 110/531/CDV 110/602/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all the parts
31、 in the IEC 61747 series, published under the general title Liquid crystal display devices, can be found on the IEC website. 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 the next edition. T
32、he committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site 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 revis
33、ed edition, or amended. A bilingual version of this publication may be issued at a later date. IEC 61747-2:2015 IEC 2015 5 LIQUID CRYSTAL DISPLAY DEVICES Part 2: Liquid crystal display modules Sectional specification 1 Scope This part of IEC 61747 applies to liquid crystal display modules such as th
34、e following: static/segment type liquid crystal display modules; passive matrix monochrome liquid crystal display modules; passive matrix colour liquid crystal display modules; active matrix monochrome liquid crystal display modules; active matrix colour liquid crystal display modules. It gives deta
35、ils of the quality assessment procedures, inspection requirements, screening sequences, sampling requirements, and test and measurement procedures required for the assessment of liquid crystal display modules. 2 Normative reference The following documents, in whole or in part, are normatively refere
36、nced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 61747-1-1:2014, Liquid crystal display devices Part 1-1: Generic Generi
37、c specification IEC 61747-10-1, Liquid crystal display devices Part 10-1: Environmental, endurance and mechanical test methods Mechanical IEC 61747-10-2, Liquid crystal display devices Part 10-2: Environmental, endurance and mechanical test methods Environmental and endurance 3 Terms and definitions
38、 For the purposes of this document, the following terms and definitions apply. 3.1 production line single set of process operations including one or several of the following manufacturing phases: a) connection of external electronic circuit devices to cell; b) finishing and final electrical and opti
39、cal measurements; c) screening (if applicable). Note 1 to entry: Quality assessment procedures are not included in these phases. 6 IEC 61747-2:2015 IEC 2015 3.2 production lot devices of the same type, manufactured in the same production lines and passing through the same nominated process, normally
40、 within one month 4 Quality assessment procedure 4.1 Primary stage of manufacture The quality assessment procedure is defined as outlined below. For the purpose of this sectional specification, this stage is defined as the first process step that connects external electronic circuit devices (includi
41、ng separate printed circuit boards (PCB) and/or connection cables) to a liquid crystal display cell, thus converting it to a liquid crystal module. 4.2 Manufacturing process 4.2.1 General The manufacturing process of liquid crystal display modules is classified as follows: a) connection of electroni
42、c circuit devices (including separate PCBs and/or connection cables): this process is the set of manufacturing process operations from the primary stage to the last step for electronic circuit device connections to the cell; b) finishing process and final electrical and optical measurements: this pr
43、ocess is the final set of manufacturing process operations comprising the assembly of a bezel, external connectors/pins and integrated backlight system to the cell if required, as well as the marking for the completion as a liquid crystal display module; c) screening (if applicable): this phase may
44、be part of the finishing operation(s). 4.2.2 Major changes in manufacturing process Any change in the manufacturing process or in the technology which could affect the quality or performance of a product supplied according to an approved specification, or which could require a product to be transfer
45、red from one structural similarity group to another (see 4.4) represents a change considered as major. It is the responsibility of the designated management representative (DMR) to decide whether the change is major or not. Any major change shall only be implemented with notification and demonstrati
46、on by test evidence of quality. Examples of major changes are: a) driver attachment: from two-bank to one-bank arrangement; b) integrated backlight system: lamp position from horizontal to vertical or from top to bottom arrangement; backlight-type change from electroluminescent to cold cathode fluor
47、escent lamp; light guide change from wedge to flat type; c) bezel material: from metal to plastic; d) connector change and/or pin assignment change: from type A to type B connector. NOTE Equipment change without changing the technology is not considered as a major change. IEC 61747-2:2015 IEC 2015 7
48、 4.3 Subcontracting The approved manufacturer shall ensure that the subcontracted manufacturing process is either part of or a whole of the cell and/or module manufacturing process, unconditionally, including screening steps which are incorporated in them. Screening operations applied after the asse
49、mbly process may also be independently subcontracted. It shall be ensured that the DMR that is certifying the components has been provided with the full quality assessment and inspection documentation of any operation outside the specified geographical area. The documentation shall include the inspection records for each sample of the product which undergoes inspection; regularly verifies that the quality assessment and inspection is applied in a
