EN 61747-4:2012

SLOVENSKI STANDARD
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Liquid crystal display devices - Part 4: Liquid crystal display modules and cells -
Essential ratings and characteristics
Ta slovenski standard je istoveten z: EN 61747-4:2012
ICS:
31.120 Elektronske prikazovalne Electronic display devices
naprave
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61747-4
NORME EUROPÉENNE
December 2012
EUROPÄISCHE NORM
ICS 31.120 Supersedes EN 61747-4:1998

English version
Liquid crystal display devices -
Part 4: Liquid crystal display modules and cells -
Essential ratings and characteristics
(IEC 61747-4:2012)
Dispositifs d’affichage à cristaux liquides -  Flüssigkristall-Anzeige-Bauelemente -
Partie 4: Modules et cellules d’affichage à Teil 4: Flüssigkristall-Anzeigemodule und -
cristaux liquides - zellen -Wesentliche Grenz- und
Valeurs limites et caractéristiques Kennwerte
essentielles (IEC 61747-4:2012)
(CEI 61747-4:2012)
This European Standard was approved by CENELEC on 2012-10-31. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the CEN-CENELEC Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61747-4:2012 E
Foreword
The text of document 110/349/CDV, future edition 2 of IEC 61747-4, prepared by IEC/TC 110 "Electronic
display devices" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
(dop) 2013-07-31
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2015-10-31
standards conflicting with the
document have to be withdrawn
This document supersedes EN 61747-4:1998.
– 2.1 and 3.1 of EN 61747-4:1998 were deleted because these items are defined in EN 61747-1;
– 2.7.6, in 2.7, Supplementary information, of EN 61747-4:1998 was deleted because the scope of this
standard is about passive matrix monochrome liquid crystal display modules;
– the item “Gray scale: digital or analog” in 2.3.1 of EN 61747-4:1998 was changed to “Gray scale:
number” because it is more accurate;
– contrast mode: light symbol on dark background (“LOD” or “positive image”) or dark symbol on light
background (“DOL” or “negative image”) was introduced in this part of EN 61747 to replace the
description in 2.3.1 and 3.3.1 of EN 61747-4:1998.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
Endorsement notice
The text of the International Standard IEC 61747-4:2012 was approved by CENELEC as a European
Standard without any modification.

- 3 - EN 61747-4:2012
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 61747-1 1998 Liquid crystal and solid-state display devices - EN 61747-1 1999
Part 1: Generic specification
IEC 61747-4 ®
Edition 2.0 2012-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Liquid crystal display devices –

Part 4: Liquid crystal display modules and cells – Essential ratings and

characteristics
Dispositifs d’affichage à cristaux liquides –

Partie 4: Modules et cellules d’affichage à cristaux liquides – Valeurs limites et

caractéristiques essentielles
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX K
ICS 31.120 ISBN 978-2-83220-352-1

– 2 – 61747-4 © IEC:2012
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Liquid crystal display modules . 5
3.1 Principles and material used. 5
3.2 Modes of operation . 5
3.3 Details of outline . 5
3.4 Limiting values (absolute maximum rating system) over the operating
temperature range, unless otherwise stated . 6
3.5 Electrical and optical characteristics . 6
3.6 Supplementary information . 7
4 Liquid crystal display cells (LCD cells) . 8
4.1 Principle and material used . 8
4.2 Modes of operation . 8
4.3 Details of outline . 8
4.4 Limiting values (absolute maximum rating system) over the operating
temperature range, unless otherwise stated . 8
4.5 Electrical and optical characteristics . 9
4.6 Supplementary information . 9

Table 1 – Electrical and optical characteristics of LCD modules . 6
Table 2 – Electrical and optical characteristics of LCD cells . 9

61747-4 © IEC:2012 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LIQUID CRYSTAL DISPLAY DEVICES –

Part 4: Liquid crystal display modules and cells –
Essential ratings and characteristics

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 concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International 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 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 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 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
misinterpretation 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 national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies 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 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 or 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 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 61747-4 has been prepared by IEC technical committee 110:
Electronic display devices.
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:
– 2.1 and 3.1 of IEC 61747-4:1998 were deleted because these items are defined in
IEC 61747-1;
– 2.7.6, in 2.7, Supplementary information, of IEC 61747-4:1998 was deleted because the
scope of this standard is about passive matrix monochrome liquid crystal display modules;
– The item “Gray scale: digital or analog” in 2.3.1 of IEC 61747-4:1998 was changed to
“Gray scale: number” because it is more accurate;

– 4 – 61747-4 © IEC:2012
– Contrast mode: light symbol on dark background (“LOD” or “positive image”) or dark
symbol on light background (“DOL” or “negative image”) was introduced in this part of
IEC 61747 to replace the description in 2.3.1 and 3.3.1 of IEC 61747-4:1998.
The text of this standard is based on the following documents:
CDV Report on voting
110/349/CDV 110/393/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.
This International Standard is to be used in conjunction with IEC 61747-1:1998 and its
Amendment 1 (2003).
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 pu
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