EN 61747-4-2012 en Liquid crystal display devices - Part 4 Liquid crystal display modules and cells - Essential ratings and characteristics.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationLiquid crystal display devicesPart 4: Liquid crystal display modules and cells Essential ratings and characteristicsBS EN 61747-4:2012National forewordThis British Standard is th

2、e UK implementation of EN 61747-4:2012. It is identical to IEC 61747-4:2012. It supersedes BS EN 61747-4:1998 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee EPL/47, Semiconductors.A list of organizations represented on this committee can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 o

3、n 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. The British Standards Institution 2013.Published by BSI Standards Limited 2013 ISBN 978 0 580 75543 9 ICS 31.120 Compliance with a Br

4、itish Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2013.Amendments issued since publicationDate Text affectedBRITISH STANDARDBS EN 61747-4:2012EUROPEAN STANDARD EN 61747-4 N

5、ORME EUROPENNE EUROPISCHE NORM December 2012 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2012 CENELEC - All rights of exploitati

6、on in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61747-4:2012 E 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) Dispos

7、itifs daffichage cristaux liquides - Partie 4: Modules et cellules daffichage cristaux liquides - Valeurs limites et caractristiques essentielles (CEI 61747-4:2012) Flssigkristall-Anzeige-Bauelemente - Teil 4: Flssigkristall-Anzeigemodule und -zellen -Wesentliche Grenz- und Kennwerte (IEC 61747-4:20

8、12) 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 bibliographi

9、cal 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 responsibi

10、lity 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, F

11、ormer 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. BS EN 61747-4:2012EN 61747-4:2012

12、- 2 - 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 EN 61747-4:2012. The following dates are fixed: latest date by which the document has to be

13、implemented at national level by publication of an identical national standard or by endorsement (dop) 2013-07-31 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2015-10-31 This document supersedes EN 61747-4:1998. EN 61747-4:2012 includes the fol

14、lowing significant technical changes with respect to 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 monochr

15、ome 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

16、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

17、 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. BS EN 61747-4:2012- 3 - EN 61747-4:2012 Annex ZA (normative) Normative references to international publications with their c

18、orresponding 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 (includi

19、ng 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 - Part 1: Generic specification EN 61747-1 1

20、999 BS EN 61747-4:2012 2 61747-4 IEC:2012 CONTENTS 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 rang

21、e, 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

22、 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 BS EN 61747-4:201261747-4 IEC:2012 5 LIQU

23、ID CRYSTAL DISPLAY DEVICES Part 4: Liquid crystal display modules and cells Essential ratings and characteristics 1 Scope This part of IEC 61747 describes the essential ratings and characteristics of LCD cells and passive matrix monochrome liquid crystal display modules. It does not apply to active

24、matrix LCD cells nor to multicolour cells. 2 Normative references 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 t

25、he referenced document (including any amendments) applies. IEC 61747-1:1998, Liquid crystal and solid-state display devices Part 1: Generic specification 3 Liquid crystal display modules 3.1 Principles and material used Example: a TN display cell with electronic circuits and connector pins. Where ap

26、propriate, a type of light source. 3.2 Modes of operation 3.2.1 Optical mode of operation illumination mode: for example reflective, transmissive, transflective gray scale: number contrast mode: light symbol on dark background (“LOD” or “positive image”) or dark symbol on light background (“DOL” or

27、“negative image”) 3.2.2 Electrical mode of operation example: static mode or multiplex mode, etc. 3.3 Details of outline 3.3.1 Material, mechanical description examples: glass, plastic, metal, etc. construction: for example integrated backlight, bezel structure 3.3.2 Method of connection connector,

28、flex cable or connection pins, etc. BS EN 61747-4:2012 6 61747-4 IEC:2012 3.3.3 Outline drawing and dimensions overall dimensions viewing area and display centre 3.3.4 Pinout table and/or connection diagram type of connectors 3.3.5 Preferred or designed viewing direction 3.4 Limiting values (absolut

29、e maximum rating system) over the operating temperature range, unless otherwise stated 3.4.1 Minimum and maximum operating temperature (Top) 3.4.2 Minimum and maximum storage temperature (Tstg) 3.4.3 Minimum and maximum value of supply voltages for logic and LCD drive (VDD-VSS，VDD-VEE，VEE-VSS，VO-VSS

30、，VDD-VO) 3.4.4 Minimum and maximum value of input signal voltage (VIN) 3.4.5 Where appropriate, maximum value of backlight voltage (VBL) 3.4.6 Where appropriate, maximum soldering temperature (Tsld) maximum soldering time and minimum distance to module package should be specified 3.5 Electrical and

31、optical characteristics The following parameters should be specified in Table 1. Table 1 Electrical and optical characteristics of LCD modules Reference Characteristics Condition at Top= 25 C unless otherwise specified Symbol Requirements 3.5.1 Supply voltage for logic drive Supply voltage for LCD d

32、rive VDD-VSSMin. Max. VDD-VEEVEE-VSSVO-VSSVDD-VO3.5.2 Input signal voltages High level input signal voltage Low level input signal voltage VINVIHVILMin. Max. 3.5.3 Backlight voltages (where appropriate) VBLMin. Max. 3.5.4 Operating frequency (where appropriate) Frame frequency Oscillator frequency f

33、opfFRMfOSCMin. Max. 3.5.5 Supply currents (without backlight) Conditions chosen to achieve maximum supply current, e.g. operating supply voltage, display pattern, etc., as appropriate ItotIDDand/or IEEMax. BS EN 61747-4:201261747-4 IEC:2012 7 Reference Characteristics Condition at Top= 25 C unless o

34、therwise specified Symbol Requirements 3.5.6 High level input signal current (where appropriate) IIHMax. 3.5.7 Low level input signal current (where appropriate) IILMax. 3.5.8 Operating backlight current (where appropriate) IBLMax. 3.5.9 Contrast ratio (diffused light and/or direct beam) When the mo

35、dule has a backlight system, this system shall be used at a specified level during the contrast ratio measurements CRdiffCRdirMin. 3.5.10 Luminance (where appropriate) Specified measuring method and conditions L Min. 3.5.11 Viewing angle range Specified definition of viewing direction and specified

36、contrast ratio Vand HMin. Max. 3.5.12 Turn-on time Specified temperature tonMax. 3.5.13 Turn-off time Specified temperature toffMax. 3.5.14 Transmittance (regular and/or diffuse) (where appropriate) Specified measuring method and conditions r and/or dMin. 3.5.15 Reflectance (regular and/or diffuse)

37、(where appropriate) Specified measuring method and conditions rand/or dMin. Max. 3.6 Supplementary information (To be given only as far as necessary for the specification and use of the device.) 3.6.1 Angular dependence of contrast ratio 3.6.2 Switching times versus temperature 3.6.3 Timing characte

38、ristics and timing of logic voltages 3.6.4 Supply voltages sequence condition, where appropriate 3.6.5 Operating voltage range, if appropriate, as a function of temperature at specified contrast ratio 3.6.6 Handling and operating information 3.6.7 Precautions with respect to electrostatic discharges

39、 3.6.8 Precautions of installation: mechanical and/or electrical 3.6.9 Safety information 3.6.10 Characterization of diffuse and specular reflectance and transmittance BS EN 61747-4:2012 8 61747-4 IEC:2012 4 Liquid crystal display cells (LCD cells) 4.1 Principle and material used Example: twisted ne

40、matic cell 4.2 Modes of operation 4.2.1 Optical mode of operation illumination mode: for example reflective, transmissive, transflective contrast mode: light symbol on dark background (“LOD” or “positive image”) or dark symbol on light background (“DOL” or “negative image”) 4.2.2 Electrical mode of

41、operation Static mode or multiplex mode 4.3 Details of outline 4.3.1 Mechanical description Example: glass or plastic 4.3.2 Method of connection 4.3.3 Outline drawing Dimensions and display pattern 4.3.4 Pinout table and/or connection diagram 4.3.5 LCD cell reference axis for definition of viewing a

42、ngle 4.3.6 Recommended viewing direction 4.4 Limiting values (absolute maximum rating system) over the operating temperature range, unless otherwise stated 4.4.1 Minimum and maximum storage temperatures (Tstg) 4.4.2 Minimum and maximum operating temperatures (Top) 4.4.3 Maximum ambient humidity (RH)

43、 4.4.4 Minimum and maximum atmospheric pressure outside 4.4.5 Maximum mechanical shock 4.4.6 Maximum vibration 4.4.7 Maximum acceleration 4.4.8 Maximum bending strength of the cell 4.4.9 Maximum torsional strength of the cell BS EN 61747-4:201261747-4 IEC:2012 9 4.4.10 Maximum r.m.s. value of applie

44、d driving voltage 4.4.11 Maximum peak-to-peak value of applied driving voltage 4.4.12 Maximum d.c. voltage component of the applied driving voltage 4.4.13 Maximum soldering temperature and time, where appropriate 4.5 Electrical and optical characteristics The following parameters should be specified

45、 in Table 2: viewing direction and contrast condition; electrical mode of operation. Table 2 Electrical and optical characteristics of LCD cells Reference Characteristics Condition at Top= 25 C unless otherwise stated Symbols Requirements 4.5.1 Driving voltage Min. Max. 4.5.2 Driving frequency Min.

46、Max. 4.5.3 Threshold voltage At specified frequency VthMin. Max. 4.5.4 Saturation voltage At specified frequency VsatMin. Max. 4.5.5 Total current: All picture elements activated at MPX. ratio = 1 At specified voltage and frequency Max. 4.5.6 Total capacitance: All picture elements activated at MPX.

47、 ratio = 1 At specified voltage and frequency Max. 4.5.7 Contrast ratio At specified viewing direction. Diffuse light and/or direct beam CRdirand/or CRdiffMin. 4.5.8 Turn-on time tonMax. 4.5.9 Turn-off time toffMax. 4.5.10 Where appropriate, regular and/or diffuse transmittance rand/or dMin. 4.5.11

48、Where appropriate, regular and/or diffuse reflectance rand/or dMin. Max. 4.6 Supplementary information (To be given only as far as necessary for the specification and use of the device.) 4.6.1 Angular dependence of contrast ratio 4.6.2 Switching times versus temperature 4.6.3 Operating range thresho

49、ld voltage versus temperature; operating voltage range as a function of temperature at specified contrast ratio. BS EN 61747-4:2012 10 61747-4 IEC:2012 4.6.4 Total picture element area (Sum of all single picture element areas, for example, segments, symbols or dots.) 4.6.5 Handling and operation information 4.6.6 Precautions 4.6.7 Chromaticity co-ordinates 4.6.8 Uniformity characteristics _ BS EN 61747-4:2012This page deliberately l