EN 62341-6-3-2012 en Organic light emitting diode (OLED) displays - Part 6-3 Measuring methods of image quality.pdf

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1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationOrganic light emitting diode (OLED) displaysPart 6-3: Measuring methods of image qualityBS EN 62341-6-3:2012National forewordThis British Standard is the UK implementation of EN

2、62341-6-3:2012. It isidentical to IEC 62341-6-3:2012.The UK participation in its preparation was entrusted to Technical CommitteeEPL/47, Semiconductors.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all th

3、e necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 65574 6ICS 31.260Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard w

4、as published under the authority of the StandardsPolicy and Strategy Committee on 31 October 2012.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 62341-6-3:2012EUROPEAN STANDARD EN 62341-6-3 NORME EUROPENNE EUROPISCHE NORM September 2012 CENELEC European Committee

5、 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 exploitation in any form and by any means reserved worldwide for CENELEC members.

6、 Ref. No. EN 62341-6-3:2012 E ICS 31.260 English version Organic light emitting diode (OLED) displays - Part 6-3: Measuring methods of image quality (IEC 62341-6-3:2012) Afficheurs diodes lectroluminescentes organiques (OLED) - Partie 6-3: Mthodes de mesure de la qualit des images (CEI 62341-6-3:201

7、2) Anzeigen mit organischen Leuchtdioden (OLEDs) - Teil 6-3: Messverfahren fr Bildqualitt (IEC 62341-6-3:2012) This European Standard was approved by CENELEC on 2012-09-13. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Eu

8、ropean 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 v

9、ersions (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

10、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, Slovak

11、ia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 62341-6-3:2012EN 62341-6-3:2012 - 2 - Foreword The text of document 110/374/FDIS, future edition 1 of IEC 62341-6-3, prepared by IEC/TC 110, “Flat panel display devices“, was submitted to the IEC-CENELEC parallel vote and

12、 approved by CENELEC as EN 62341-6-3:2012. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2013-06-13 latest date by which the national standards conflicting with the doc

13、ument have to be withdrawn (dow) 2015-09-13 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 Interna

14、tional Standard IEC 62341-6-3:2012 was approved by CENELEC as a European Standard without any modification. BS EN 62341-6-3:2012- 3 - EN 62341-6-3:2012 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in w

15、hole 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 publicati

16、on has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 62341-1-2 2007 Organic light emitting diode displays - Part 1-2: Terminology and letter symbols EN 62341-1-2 2009 CIE 15 2004 Colorimetry - - ISO 11664-1/ CIE S 014-1 -

17、 Colorimetry - Part 1: CIE standard colorimetric observers - - ISO 11664-5 CIE S 014-5 - Colorimetry - Part 5: CIE 1976 L*u*v* Colour space and u, v uniform chromaticity scale diagram - - BS EN 62341-6-3:2012 2 62341-6-3 IEC:2012 CONTENTS 1 Scope . 6 2 Normative references . 6 3 Terms, definitions,

18、symbols, units and abbreviations 6 3.1 Terms, definitions, symbols and units 6 3.2 Abbreviations 6 4 Standard measuring equipment and coordinate system 7 4.1 Light measuring devices 7 4.2 Viewing direction coordinate system 7 5 Measuring conditions 8 5.1 Standard measuring environmental conditions .

19、 8 5.2 Power supply . 9 5.3 Warm-up time 9 5.4 Standard measuring dark-room conditions . 9 5.5 Standard set-up conditions 9 6 Measuring methods of image quality . 10 6.1 Viewing angle range 10 6.1.1 Purpose . 10 6.1.2 Measuring conditions . 10 6.1.3 Set-up . 10 6.1.4 Measurement and evaluation . 11

20、6.1.5 Reporting. 12 6.2 Cross-talk 13 6.2.1 Purpose . 13 6.2.2 Measuring conditions . 13 6.2.3 Measurement and evaluation . 13 6.2.4 Reporting. 16 6.3 Flicker . 16 6.3.1 Purpose . 16 6.3.2 Measuring conditions . 16 6.3.3 Set-up . 16 6.3.4 Measuring method . 17 6.3.5 Evaluation method . 17 6.3.6 Repo

21、rting. 19 6.4 Static image resolution 19 6.4.1 Purpose . 19 6.4.2 Measuring conditions . 20 6.4.3 Measuring method . 20 6.4.4 Calculation and reporting . 20 6.5 Moving image resolution 21 6.5.1 Purpose . 21 6.5.2 Measuring conditions . 21 6.5.3 Temporal integration method . 23 6.5.4 Image tracking m

22、ethod 25 6.5.5 Dynamic MTF calculation . 27 BS EN 62341-6-3:201262341-6-3 IEC:2012 3 6.5.6 Reporting. 27 Annex A (informative) Simple matrix method for correction stray light of imaging instruments . 28 Bibliography 30 Figure 1 Representation of the viewing direction (equivalent to the direction of

23、measurement) by the angle of inclination, and the angle of rotation (azimuth angle), in a polar coordinate system 8 Figure 2 DUT installation conditions . 9 Figure 3 Geometry used for measuring viewing angle range 11 Figure 4 Standard measurement positions, indicated by P0-P8, are located relative t

24、o the height (V) and display width (H) of active area. . 13 Figure 5 Luminance measurement of 4 % window at P0. 14 Figure 6 Luminance measurement at P0with windows AW1,AW2, AB3and AB4. 15 Figure 7 Luminance measurement at P0with windows AW5, AW8, AB5and AB815 Figure 8 Apparatus arrangement 16 Figure

25、 9 Temporal contrast sensitivity function 18 Figure 10 Example of flicker modulation waveform . 18 Figure 11 Contrast modulation measurement . 21 Figure 12 Peak luminance and amplitude of display test signal 23 Figure 13 Set-up for measurement of the temporal response of the DUT . 23 Figure 14 Sinus

26、oidal luminance pattern and corresponding gray level values 24 Figure 15 Input code sequences (left) and corresponding temporal luminance transitions (right). 25 Figure 16 Example of captured image 26 Figure 17 Example of Fourier transform . 27 Figure 18 Example of limit resolution evaluation 27 Fig

27、ure A.1 Result of spatial stray light correction for an imaging photometer used to measure a black spot surrounded by a large bright light source. . 29 Table 1 Temporal contrast sensitivity function 17 BS EN 62341-6-3:2012 6 62341-6-3 IEC:2012 ORGANIC LIGHT EMITTING DIODE (OLED) DISPLAYS Part 6-3: M

28、easuring methods of image quality 1 Scope This part of IEC 62341 specifies the standard measurement conditions and measuring methods for determining image quality of organic light emitting diode (OLED) display panels and modules. More specifically, this standard focuses on five specific aspects of i

29、mage quality, i.e., the viewing angle range, cross-talk, flicker, static image resolution, and moving image resolution. 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, on

30、ly the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 62341-1-2:2007, Organic light emitting diode (OLED) displays Part 1-2: Terminology and letter symbols CIE 015:2004, Colorimetry, 3rd Edition ISO 11664-1/CIE S 0

31、14-1, Colorimetry Part 1: CIE standard colorimetric observers ISO 11664-5/CIE S 014-5, Colorimetry Part 5: CIE 1976 L*u*v* Colour space and u, v uniform chromaticity scale diagram 3 Terms, definitions, symbols, units and abbreviations 3.1 Terms, definitions, symbols and units For the purposes of thi

32、s document, the terms, definitions, symbols and units given in IEC 62341-1-2 apply. 3.2 Abbreviations CCD Charge coupled device CIE International Commission on Illumination (Commission Internationale de Lclairage) CFF Critrical flicker frequency CIELAB CIE 1976 (L*a*b*) colour space DUT Device under

33、 test HVS Human visual system LED Light emitting diode LMD Light measuring device OLED Organic light emitting diode ppf pixels per frame BS EN 62341-6-3:201262341-6-3 IEC:2012 7 PSF Point spread function RGB Red, green, blue SLSF Spectral line spread function 4 Standard measuring equipment and coord

34、inate system 4.1 Light measuring devices The system configurations and/or operating conditions of the measuring equipment shall comply with the structure specified in each item. To ensure reliable measurements, the following requirements apply to the light measuring equipment, listed below: a) Lumin

35、ance meter 11: the instruments spectral responsivity shall comply with the CIE photopic luminous efficiency function with a CIE-f1value no greater than 3 % 2; the relative luminance uncertainty of measured luminance (relative to CIE illuminant A source) shall not be greater than 4 % for luminance va

36、lues over 10 cd/m2and not be greater than 10 % for luminance values 10 cd/m2and below. b) Colorimeter: the detectors spectral responsivity shall comply with the colour matching functions for the CIE 1931 standard colorimetric observer (as defined in ISO 11664-1/CIE S 014-1) with a colorimetric accur

37、acy of 0,002 for the CIE chromaticity coordinates x and y (relative to CIE illuminant A source). A correction factor can be used for required accuracy by application of a standard source with similar spectral distribution as the display to be measured. c) Spectroradiometer: the wavelength range shal

38、l be at least from 380 nm to 780 nm, and the wavelength scale accuracy shall be less than 0,5 nm. The relative luminance uncertainty of measured luminance (relative to CIE illuminant A source) shall not be greater than 4 % for luminance values over 10 cd/m2and not be greater than 10 % for luminance

39、values 10 cd/m2and below. Note that errors from spectral stray light within a spectroradiometer can be significant and shall be corrected. A simple matrix method may be used to correct the stray light errors, by which stray light errors can be reduced for one to two orders of magnitudes. Details of

40、this correction method are discussed in 3. d) Goniophotometric mechanism: the DUT or LMD can be driven rotating around a horizontal axis and vertical axis; angle accuracy shall be better than 0,5. e) Imaging colorimeter: number of pixels of the detector shall not be less than 4 for each display sub-

41、pixel within the colorimeters measurement field of view; more than 12 bit digital resolution; spectral responsivity complies with colour matching functions for the CIE 1931 standard colorimetric observer with colorimetric accuracy of 0,004 for the CIE coordinates x and y, and photopic vision respons

42、e function with CIE-f1 no greater than 3 %. f) Fast-response photometer: the linearity shall be better than 0,5 % and frequency response higher than 1 kHz; and photopic vision response function with CIE-f1 no greater than 5 %. 4.2 Viewing direction coordinate system The viewing direction is the dire

43、ction under which the observer looks at the spot of interest on the DUT (see also IEC 62341-1-2:2007, Figure A.2). During the measurement, the LMD is replacing the observer, looking from the same direction at a specified spot (i.e. measuring spot, measurement field) on the DUT. The viewing direction

44、 is conveniently defined by two angles: the angle of inclination (related to the surface normal of the DUT) and the angle of rotation (also called azimuth angle) as illustrated in Figure 1. The azimuth angle is related to 1Numbers in square brackets refer to the bibliography. BS EN 62341-6-3:2012 8

45、62341-6-3 IEC:2012 the directions on a watch-dial as follows: = 0 is referred to as the 3 oclock direction (“right“), = 90 as the 12 oclock direction (“top“), = 180 as the 9 oclock direction (“left“) and = 270 as the 6 oclock direction (“bottom“). Normal direction = 0 Viewing direction ( , ) Upside

46、z 12 oclock = 90 3 oclock = 0 x y x 9 oclock = 180 6 oclock = 270 y z Down side Display plane IEC 1573/12 Key incline angle from normal direction azimuth angle 3 oclock right edge of the screen as seen from the user 6 oclock bottom edge of the screen as seen from the user 9 oclock left edge of the s

47、creen as seen from the user 12 oclock top edge of the screen as seen from the user Figure 1 Representation of the viewing direction (equivalent to the direction of measurement) by the angle of inclination, , and the angle of rotation (azimuth angle), in a polar coordinate system 5 Measuring conditio

48、ns 5.1 Standard measuring environmental conditions Measurements shall be carried out under the standard environmental conditions: temperature: 25 C 3 C; relative humidity: 25 % RH to 85 % RH; atmospheric pressure: 86 kPa to 106 kPa. When different environmental conditions are used, they shall be not

49、ed in the measurement report. BS EN 62341-6-3:201262341-6-3 IEC:2012 9 5.2 Power supply The power supply for driving the DUT shall be adjusted to the rated voltage 0,5 %. In addition, the frequency of power supply shall provide the rated frequency 0,2 %. 5.3 Warm-up time Measurements shall be carried out after sufficient warm-up. Warm-up time is defined as th