IEC 61747-2:2015

IEC 61747-2 ®
Edition 2.0 2015-04
INTERNATIONAL
STANDARD
Liquid crystal display devices –
Part 2: Liquid crystal display modules – Sectional specification

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IEC 61747-2 ®
Edition 2.0 2015-04
INTERNATIONAL
STANDARD
Liquid crystal display devices –

Part 2: Liquid crystal display modules – Sectional specification

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.120 ISBN 978-2-8322-2569-1

– 2 – IEC 61747-2:2015 © IEC 2015
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative 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 Structurally 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
4.6.5 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 . 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 inspections . 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

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LIQUID CRYSTAL DISPLAY DEVICES –

Part 2: Liquid crystal display modules –
Sectional specification
FOREWORD
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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 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 respect 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 following 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 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.
The 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 revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

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 the 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 details 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 referenced 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 – Generic 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
mec
...