1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 61747-6-2:2011Liquid crystal display devices Part 6-2: Measuring methods for liquidcrystal display modules Reflective typeBS EN 61747-6-2:2011Incorporating corrigendum January 2012BSI Standards Pub
2、licationBS EN 61747-6-2:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 61747-6-2:2011. It is idenitical to IEC 61747-6-2:2011.The UK participation in its preparation was entrusted to Technical Committee EPL/47, Semiconductors.A list of organizations repres
3、ented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011 ISBN 978 0 580 58325 4 ICS 31.120 Compliance with a British Standard cannot confer
4、immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2011.Amendments issued since publicationDate Text affectedBS EN 61747-6-2:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implemen
5、tation of EN 61747-6-2:2011. It is idenitical to IEC 61747-6-2:2011.The UK participation in its preparation was entrusted to Technical Committee EPL/47, Semiconductors.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport
6、to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011 ISBN 978 0 580 58325 4 ICS 31.120 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standar
7、ds Policy and Strategy Committee on 31 August 2011.Amendments issued since publicationDate Text affectedThis British Standard is the UK implementation of EN 61747-6-2:2011. It is identical to IEC 61747-6-2:2011, incorporating corrigendum January 2012.The start and finish of text introduced or altere
8、d by corrigendum is indicated in the text by tags. Text altered by IEC corrigendum January 2012 is indicated in the text by . The British Standards Institution 2013. Published by BSI Standards Limited 2013ISBN 978 0 580 78491 0ICS 31.120Compliance with a British Standard cannot confer immunity from
9、legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2011.Amendments/corrigenda issued since publicationDate Text affected31 May 2013 Implementation of IEC corrigendum January 2012BS EN 61747-6-2:2011EUROPEAN STANDARD E
10、N 61747-6-2NORME EUROPENNE EUROPISCHE NORM August 2011 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2011 CENELEC - All rights of
11、exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61747-6-2:2011 E ICS 31.120 English version Liquid crystal display devices - Part 6-2: Measuring methods for liquid crystal display modules - Reflective type (IEC 61747-6-2:2011) Dispositifs daffichage cris
12、taux liquides - Partie 6-2: Mthodes de mesure pour les modules daffichage cristaux liquides - Type rflexible (CEI 61747-6-2:2011) Flssigkristall-Anzeige-Bauelemente - Teil 6-2: Messverfahren fr Flssigkristall-Anzeigemodule - Reflektive Ausfhrung (IEC 61747-6-2:2011) This European Standard was approv
13、ed by CENELEC on 2011-07-15. 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 nation
14、al standards may be obtained on application to the Central Secretariat 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
15、and notified to the Central Secretariat 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
16、 Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 61747-6-2:2011EN 61747-6-2:2011 - 2 - Foreword The text of document 110/281/FDIS, future edition 1 of IEC 61747-6-2, prepared by IEC
17、 TC 110, Flat panel display devices, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61747-6-2 on 2011-07-15. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held respo
18、nsible for identifying any or all such patent rights. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2012-04-15 latest date by which the national standards conflicting with t
19、he EN have to be withdrawn (dow) 2014-07-15 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61747-6-2:2011 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have
20、to be added for the standards indicated: 19 IEC 61747-6 NOTE Harmonized as EN 61747-6. 20 ISO 9241-7 NOTE Harmonized as EN ISO 9241-7. 21 ISO 13406-2 NOTE Harmonized as EN ISO 13406-2. 23 IEC 61747-1 NOTE Harmonized as EN 61747-1. 24 IEC 61747-5 NOTE Harmonized as EN 61747-5. _ BS EN 61747-6-2:2011-
21、 3 - EN 61747-6-2:2011 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated r
22、eferences, 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 ISO 11664-2 2007 Colorimetry - Part 2: CIE
23、standard illuminants EN ISO 11664-2 2011 CIE 15.2 - CIE Recommendations on Colorimetry - - CIE 17.4 - International Lighting Vocabulary - - CIE 38 - Radiometric and photometric characteristics of materials and their measurement - - CIE 1931 - CIE XYZ colour space - - CIE 1976 - CIE LAB colour space
24、- - 2 61747-6-2 IEC:2011 CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Scope . 8 2 Normative references . 8 3 Illumination and illumination geometry 9 3.1 General comments and remarks on the measurement of reflective LCDs . 9 3.2 Viewing-direction coordinate system 9 3.3 Basic illumination geometries 10
25、3.4 Realization of illumination geometries . 10 3.4.1 General . 10 3.4.2 Directional illumination 11 3.4.3 Ring-light illumination 11 3.4.4 Conical illumination . 12 3.4.5 Hemispherical illumination . 12 4 Standard measurement equipment and set-up 13 4.1 Light measuring devices (LMD) . 13 4.2 Positi
26、oning and alignment . 13 4.3 Standard measurement arrangements . 13 4.3.1 General . 13 4.3.2 Directional illumination 14 4.3.3 Ring-light illumination 15 4.3.4 Conical illumination . 15 4.3.5 Hemispherical illumination . 16 4.3.6 Other illumination conditions 17 4.4 Standard specification of measure
27、ment conditions 17 4.4.1 Illumination conditions . 17 4.4.2 LMD conditions 19 4.4.3 Unwanted effects of receiver inclination . 20 4.4.4 Control and suppression of front-surface reflections 20 4.5 Working standards and references 21 4.5.1 Diffuse reflectance standard 21 4.5.2 Specular reflectance sta
28、ndard . 21 4.6 Standard locations of measurement field . 22 4.6.1 Matrix displays 22 4.6.2 Segment displays 22 4.7 Standard DUT operating conditions . 23 4.7.1 General . 23 4.7.2 Standard ambient conditions . 23 4.8 Standard measuring process . 23 5 Standard measurements and evaluations . 24 5.1 Ref
29、lectance Photometric. 24 5.1.1 Purpose . 24 5.1.2 Measuring equipment 24 5.1.3 Measuring method . 24 5.1.4 Definitions and evaluations 25 5.2 Contrast ratio 26 BS EN 61747-6-2:2011 2 61747-6-2 IEC:2011 CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Scope . 8 2 Normative references . 8 3 Illumination and i
30、llumination geometry 9 3.1 General comments and remarks on the measurement of reflective LCDs . 9 3.2 Viewing-direction coordinate system 9 3.3 Basic illumination geometries 10 3.4 Realization of illumination geometries . 10 3.4.1 General . 10 3.4.2 Directional illumination 11 3.4.3 Ring-light illum
31、ination 11 3.4.4 Conical illumination . 12 3.4.5 Hemispherical illumination . 12 4 Standard measurement equipment and set-up 13 4.1 Light measuring devices (LMD) . 13 4.2 Positioning and alignment . 13 4.3 Standard measurement arrangements . 13 4.3.1 General . 13 4.3.2 Directional illumination 14 4.
32、3.3 Ring-light illumination 15 4.3.4 Conical illumination . 15 4.3.5 Hemispherical illumination . 16 4.3.6 Other illumination conditions 17 4.4 Standard specification of measurement conditions 17 4.4.1 Illumination conditions . 17 4.4.2 LMD conditions 19 4.4.3 Unwanted effects of receiver inclinatio
33、n . 20 4.4.4 Control and suppression of front-surface reflections 20 4.5 Working standards and references 21 4.5.1 Diffuse reflectance standard 21 4.5.2 Specular reflectance standard . 21 4.6 Standard locations of measurement field . 22 4.6.1 Matrix displays 22 4.6.2 Segment displays 22 4.7 Standard
34、 DUT operating conditions . 23 4.7.1 General . 23 4.7.2 Standard ambient conditions . 23 4.8 Standard measuring process . 23 5 Standard measurements and evaluations . 24 5.1 Reflectance Photometric. 24 5.1.1 Purpose . 24 5.1.2 Measuring equipment 24 5.1.3 Measuring method . 24 5.1.4 Definitions and
35、evaluations 25 5.2 Contrast ratio 26 BS EN 61747-6-2:201161747-6-2 IEC:2011 3 5.2.1 Purpose . 26 5.2.2 Measuring equipment 26 5.2.3 Measurement method 26 5.2.4 Definitions and evaluations 27 5.3 Peak viewing direction / viewing angle range . 27 5.3.1 Purpose / definition 27 5.3.2 Measuring equipment
36、 27 5.3.3 Viewing angle 27 5.3.4 Viewing angle range without gray-level inversion . 28 5.3.5 Specular reflectance from the active area surface . 29 5.4 Chromaticity 31 5.4.1 Purpose . 31 5.4.2 Measuring equipment 31 5.4.3 Measuring method . 31 5.4.4 Definitions and evaluations 31 5.4.5 Specified con
37、ditions 32 5.5 Electro-optical transfer function Photometric 33 5.5.1 Purpose . 33 5.5.2 Set-up . 33 5.5.3 Procedure 33 5.5.4 Evaluation and representation . 33 5.6 Electro-optical transfer function Colorimetric 34 5.6.1 Purpose . 34 5.6.2 Set-up . 34 5.6.3 Procedure 34 5.6.4 Evaluation and represen
38、tation . 35 5.7 Lateral variations (photometric, colorimetric) . 35 5.7.1 Purpose . 35 5.7.2 Measuring equipment 35 5.7.3 Uniformity of reflectance 36 5.7.4 Uniformity of white . 36 5.7.5 Uniformity of chromaticity 37 5.7.6 Uniformity of primary colours . 37 5.7.7 Cross-talk 38 5.7.8 Specified condi
39、tions 40 5.8 Temporal variations . 40 5.8.1 Response time 40 5.8.2 Flicker / frame response (multiplexed displays) . 43 5.8.3 Specified conditions 44 5.9 Electrical characteristics 45 5.9.1 Purpose . 45 5.9.2 Measuring instruments 45 5.9.3 Measuring method . 45 5.9.4 Definitions and evaluations 45 5
40、.9.5 Specified conditions 46 Annex A (informative) Standard measuring conditions . 47 Bibliography 51 BS EN 61747-6-2:2011 4 61747-6-2 IEC:2011 Figure 1 Representation of the viewing-direction (equivalent to the direction of measurement) by the angle of inclination, and the angle of rotation (azimut
41、h angle), in a polar coordinate system 9 Figure 2 Directional illumination with a flat source disk 10 Figure 3 Realization alternatives for directional illumination . 11 Figure 4 Examples of ring-light illumination 12 Figure 5 Examples of conical illumination with a spherical dome (left) and an inte
42、grating sphere with large aperture (right) . 12 Figure 6 Examples of hemispherical illumination 13 Figure 7 Side-view of the measuring set-up using directional illumination 14 Figure 8 Side-view of the ring-light illumination measuring set-up 15 Figure 9 Side-view of the conical illumination measuri
43、ng set-up . 16 Figure 10 Side-view of the hemispherical illumination measuring set-up 17 Figure 11 Hemispherical illumination with gloss-trap (GT) opposite to receiver inclination . 18 Figure 12 Normalized illuminance at the location of the measuring spot . 18 Figure 13 Lines of equal chromaticity d
44、ifferences u (left), v (right) 19 Figure 14 Shape of measuring spot on DUT for two angles of receiver inclination 20 Figure 15 Reflections from the first surface of a transparent medium (glass substrate, polarizer, etc.) superimposed to the reflection component that is modulated by the display devic
45、e . 21 Figure 16 Standard measurement positions are at the centres of all rectangles p0-p24. Height and width of each rectangle is 20 % of display height and width respectively. . 22 Figure 17 Example of standard set-up for specular reflection measurements . 30 Figure 18 Example of equipment for mea
46、surement of temporal variations 41 Figure 19 Relationship between driving signal and optical response times . 42 Figure 20 Frequency characteristics of the integrator (response of human visual system) . 44 Figure 21 Example of power spectrum . 44 Figure 22 Checker-flag pattern for current and power
47、consumption measurements 45 Figure 23 Example of measuring block diagram for current and power consumption of a liquid crystal display device 46 Figure A.1 Coordinate system for measurement of the BRDF, index “i“ for incident light, index “r“ for reflected light. Directions are described by two angl
48、es, and (inclination and azimuth) in a polar coordinate system as shown 48 Figure A.2 Terminology for LMDs . 49 BS EN 61747-6-2:2011 4 61747-6-2 IEC:2011 Figure 1 Representation of the viewing-direction (equivalent to the direction of measurement) by the angle of inclination, and the angle of rotati
49、on (azimuth angle), in a polar coordinate system 9 Figure 2 Directional illumination with a flat source disk 10 Figure 3 Realization alternatives for directional illumination . 11 Figure 4 Examples of ring-light illumination 12 Figure 5 Examples of conical illumination with a spherical dome (left) and an integrating sphere with large aperture (right) . 12 Figure 6 Examples of hemispherical illumination 13 Figure 7 S
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