SIST EN 62341-6-1:2011

Organic light emitting diode (OLED) displays - Part 6-1: Measuring methods of optical and electro-optical parameters (IEC 62341-6-1:2009)

This part of IEC 62341 specifies the standard measurement conditions and measuring methods for determining optical and electro-optical parameters of organic light emitting diode (OLED) display modules, and where specified, OLED display panels, in the following areas: a) luminance and uniformity; b) dark room contrast ratio; c) chromaticity, colour uniformity, colour gamut and white field correlated colour temperature; d) power consumption.

Anzeigen mit organischen lichtemittierenden Dioden - Teil 6-1: Messmethoden für optische und elektro-optische Parameter (IEC 62341-6-1:2009)

Afficheurs à diodes électroluminescentes organiques (OLED) - Partie 6-1: Méthodes de mesure des paramètres optiques et électro-optiques (CEI 62341-6-1:2009)

La CEI 62341-6-1:2009 spécifie les conditions de mesure et méthodes de mesure normalisées, en vue de déterminer les paramètres optiques et électro-optiques des modules d'affichage à diode électroluminescente organique (OLED, Organic Light Emitting Diode), et si cela est spécifié, des panneaux d'affichage OLED, dans les domaines suivants:  a) luminance et uniformité;  b) rapport de contraste en chambre noire;  c) chromaticité, uniformité de la couleur, gammes de couleurs et température de couleur proximale du blanc plein écran;  d) consommation d'énergie.

Prikazovalniki z organskimi svetlečimi diodami (OLED) - 6-1. del: Merilne metode za optične in optoelektrične parametre (IEC 62341-6-1:2009)

Ta del IEC 62341 določa standardne pogoje meritev in merilne metode za določanje optičnih in optoelektričnih parametrov prikazovalnih modulov z organskimi svetlečimi diodami (OLED) in kjer določeno, OLED prikazovalnike na naslednjih področjih: a) svetilnost in enotnost, b) razmerje kontrasta v temnem prostoru, c) kromatičnost, enotnost barv, barvna paleta in z belim poljem povezana temperatura barv, d) poraba energije.

General Information

• Status: Published
• Publication Date: 21-Feb-2011
• ICS: 31.120 - Electronic display devices
• Technical Committee: I11 - Imaginarni 11
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 09-Feb-2011
• Due Date: 16-Apr-2011
• Completion Date: 22-Feb-2011
• Ref Project: EN 62341-6-1:2011 - Organic light emitting diode (OLED) displays - Part 6-1: Measuring methods of optical and electro-optical parameters

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 62341-6-1:2011
01-april-2011
3ULND]RYDOQLNL]RUJDQVNLPLVYHWOHþLPLGLRGDPL2/('GHO0HULOQHPHWRGH
]DRSWLþQHLQRSWRHOHNWULþQHSDUDPHWUH,(&
Organic light emitting diode (OLED) displays - Part 6-1: Measuring methods of optical
and electro-optical parameters (IEC 62341-6-1:2009)
Anzeigen mit organischen lichtemittierenden Dioden - Teil 6-1: Messmethoden für
optische und elektro-optische Parameter (IEC 62341-6-1:2009)
Afficheurs à diodes électroluminescentes organiques (OLED) - Partie 6-1: Méthodes de
mesure des paramètres optiques et électro-optiques (CEI 62341-6-1:2009)
Ta slovenski standard je istoveten z: EN 62341-6-1:2011
ICS:
31.120 Elektronske prikazovalne Electronic display devices
naprave
SIST EN 62341-6-1:2011 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62341-6-1:2011

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SIST EN 62341-6-1:2011

EUROPEAN STANDARD
EN 62341-6-1

NORME EUROPÉENNE
February 2011
EUROPÄISCHE NORM

ICS 31.260


English version


Organic light emitting diode (OLED) displays -
Part 6-1: Measuring methods of optical and electro-optical parameters
(IEC 62341-6-1:2009)


Afficheurs à diodes électroluminescentes Anzeigen mit organischen
organiques (OLED) - lichtemittierenden Dioden -
Partie 6-1: Méthodes de mesure des Teil 6-1: Messmethoden für optische und
paramètres optiques et électro-optiques elektro-optische Parameter
(CEI 62341-6-1:2009) (IEC 62341-6-1:2009)




This European Standard was approved by CENELEC on 2011-01-02. 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 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 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,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland 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


© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62341-6-1:2011 E

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SIST EN 62341-6-1:2011
EN 62341-6-1:2011 - 2 -
Foreword
The text of document 110/170/FDIS, future edition 1 of IEC 62341-6-1, prepared by IEC/TC 110, Flat
panel display devices, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC
as EN 62341-6-1 on 2011-01-02.
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 responsible 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
(dop) 2011-10-02
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2014-01-02
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 62341-6-1:2009 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60068-1 NOTE  Harmonized as EN 60068-1.
IEC 61747-6 NOTE  Harmonized as EN 61747-6.
IEC 61988-2-1 NOTE  Harmonized as EN 61988-2-1.
IEC 62087 NOTE  Harmonized as EN 62087.
IEC 62341-1-1 NOTE  Harmonized as EN 62341-1-1.
__________

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SIST EN 62341-6-1:2011
- 3 - EN 62341-6-1:2011
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 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 62341-1-2 - Organic light emitting diode displays - EN 62341-1-2 -
Part 1-2: Terminology and letter symbols


CIE 15.2 1986 Colorimetry - -


CIE S 014-1/E 2006 Colorimetry - - -
Part 1: Standard Colorimetric Observers

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SIST EN 62341-6-1:2011

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SIST EN 62341-6-1:2011
IEC 62341-6-1
®
Edition 1.0 2009-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Organic light emitting diode (OLED) displays –
Part 6-1: Measuring methods of optical and electro-optical parameters

Afficheurs à diodes électroluminescentes organiques (OLED) –
Partie 6-1: Méthodes de mesure des paramètres optiques et électro-optiques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
U
CODE PRIX
ICS 31.260 ISBN 978-2-88910-677-6
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 62341-6-1:2011
– 2 – 62341-6-1 © IEC:2009
CONTENTS
FOREWORD.4
1 Scope.6
2 Normative references .6
3 Terms, definitions and units .6
4 Structure of measuring equipment .6
5 Standard measuring conditions.6
5.1 Standard measuring environmental conditions.6
5.2 Standard measuring dark-room conditions.6
5.3 Standard setup conditions .7
5.3.1 Adjustment of OLED display modules .7
5.3.2 Starting conditions of measurements .7
5.3.3 Conditions of measuring equipment.7
6 Measuring methods for optical parameters .8
6.1 Luminance and its uniformity.8
6.1.1 Purpose.8
6.1.2 Measuring conditions.9
6.1.3 Measuring methods .9
6.2 Dark room contrast ratio.12
6.2.1 Purpose.12
6.2.2 Measuring conditions.12
6.2.3 Measuring method .12
6.3 Chromaticity, colour uniformity, colour gamut and white field correlated
colour temperature .13
6.3.1 Purpose.13
6.3.2 Measuring conditions.13
6.3.3 Measuring method .13
7 Measuring methods for power consumption .16
7.1 Purpose .16
7.2 Measuring conditions .16
7.3 Measuring method.17
7.3.1 Measuring the power consumption of the OLED display module .17
Annex A (normative) Response time of passive matrix display panels.19
Annex B (normative) Luminance current efficiency.21
Annex C (informative) Veiling glare frustum .23
Annex D (informative) Methods to obtain the correlated colour temperature (CCT) from
chromaticity coordinates .24
Bibliography.27

8
Figure 1 – Layout diagram of measurement setup.
Figure 2 – Luminance measuring pattern .10
Figure 3 – Measurement points.11
Figure 4 – Example of the colour gamut.14
Figure 5 – Colour of blackbody source at various temperatures .16
Figure 6 – Example of measurement setup of power consumption .17
Figure A.1 – Relationship between driving signal and optical response times.20

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SIST EN 62341-6-1:2011
62341-6-1 © IEC:2009 – 3 –
Figure B.1 – Example of a measurement configuration for measuring luminance
current efficiency .22
Figure C.1 – Pattern for veiling glare frustum.23
Figure D.1 – CIE 1931 XYZ chromaticity diagram .25
Figure D.2 – Blackbody locus (Planckian locus) and isotemperature lines in CIE 1931 XYZ.26

Table 1 – Example of luminance non-uniformity .12
Table 2 – Example of chromaticity non-uniformity .15
Table 3 – Example of a module power consumption measurements summary sheet .18
Table D.1 – x , y , A and t for equation (D.3) and equation (D.4).24
e e i i

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SIST EN 62341-6-1:2011
– 4 – 62341-6-1 © IEC:2009
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________

ORGANIC LIGHT EMITTING DIODE (OLED) DISPLAYS –

Part 6-1: Measuring methods of optical and electro-optical parameters


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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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 62341-6-1 has been prepared by IEC technical committee 110:
Flat panel display devices.
The text of this standard is based on the following documents:
FDIS Report on voting
110/170/FDIS 110/179/RVD

Full information on the voting for the approval on 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.

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SIST EN 62341-6-1:2011
62341-6-1 © IEC:2009 – 5 –
A list of all the parts in the IEC 62341 series, under the general title Organic Light Emitting
Diode (OLED) Displays, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result 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.

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SIST EN 62341-6-1:2011
– 6 – 62341-6-1 © IEC:2009
ORGANIC LIGHT EMITTING DIODE (OLED) DISPLAYS –

Part 6-1: Measuring methods of optical and electro-optical parameters



1 Scope
This part of IEC 62341 specifies the standard measurement conditions and measuring
methods for determining optical and electro-optical parameters of organic light emitting diode
(OLED) display modules, and where specified, OLED display panels, in the following areas:
a) luminance and uniformity;
b) dark room contrast ratio;
c) chromaticity, colour uniformity, colour gamut and white field correlated colour temperature;
d) power consumption.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 62341-1-2, Organic light emitting diode (OLED) displays – Part 1-2: Terminology and
letter symbols
CIE 15.2:1986, Colorimetry (second edition)
CIE S 014-1/E:2006, Colorimetry – Part 1: CIE Standard Colorimetric Observers
3 Terms, definitions and units
For the purposes of this part of IEC 62341, most of the definitions and units used comply with
IEC 62341-1-2.
4 Structure of measuring equipment
The system diagrams and/or operating conditions of the measuring equipment shall comply
with the structure specified in each item.
5 Standard measuring conditions
5.1 Standard measuring environmental conditions
Measurements shall be carried out under the standard environmental conditions at a
temperature of 25 ºC ± 3 ºC, at a relative humidity of 25 % to 85 %, and pressure of 86 kPa to
106 kPa. When different environmental conditions are used, they shall be noted in the report.
5.2 Standard measuring dark-room conditions
With the OLED display turned off, the ambient illuminance at all points on the screen shall be
less than 0,3 lx. When a higher ambient illuminance on the display is present, the background

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SIST EN 62341-6-1:2011
62341-6-1 © IEC:2009 – 7 –
luminance measured when the display is OFF shall be subtracted from subsequent luminance
measurements of the display, and shall be reported.
5.3 Standard setup conditions
Standard setup conditions are given below. Any deviations from these conditions shall be
reported.
5.3.1 Adjustment of OLED display modules
The luminance, contrast, correlated colour temperature of the white field, and other relevant
parameters have to be adjusted to nominal values and they shall be reported in detail in the
specifications of the measurement. For a full colour display, the chromaticity of the white field
shall also be adjusted to match the product specification. When no levels are specified, the
maximum contrast and/or luminance level shall be used and the settings reported. These
adjustments shall be held constant for all measurements, unless stated otherwise. It is
important, however, to make sure that not only the adjustments are kept constant, but also
that the resulting physical quantities remain constant during the measurement. This is not
automatically the case because of, for example, warm-up effects.
5.3.2 Starting conditions of measurements
Warm-up time is defined as the time elapsed from the moment of switching on the supply
voltage until repeated measurements of the display show a variation in luminance of less than
2 % per minute. Repeated measurements shall be taken for at least a period of 15 min after
starting. The luminance variations shall also not exceed 5 % during the total measurement.
Measurements shall be started after the OLED displays and measuring instruments achieve
stability. Sufficient warm-up time has to be allowed for the OLED displays to reach
luminescence stability.
5.3.3 Conditions of measuring equipment
5.3.3.1 General conditions
The following general conditions apply.
a) The standard measurement setup is shown in Figure 1. The light measuring device (LMD)
may be any of the following meters:
1) a luminance meter with a spectral response approximating the spectral luminous
efficiency function for photopic vision;
2) a colorimetric meter with the spectral sensitivity as colour-matching functions for the
CIE 1931 standard colorimetric observer (specified in CIE S 014-1);
3) a spectroradiometer with a wavelength range from 380 nm to 780 nm;
4) an imaging photometer or colourimeter with the spectral sensitivity as colour-matching
functions for the CIE 1931 standard colorimetric observer.
Care shall be taken to ensure that the device is capable of performing the required task.
b) The light measuring device shall be aligned perpendicular to the area to be measured on
the image generating surface of the OLED display.
c) The relative uncertainty and relative repeatability of all the measuring devices shall be
maintained by following the instrument supplier’s recommended calibration schedule.

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SIST EN 62341-6-1:2011
– 8 – 62341-6-1 © IEC:2009
Acceptance

area
Luminance
Field of view
meter with
viewport
Anglar aperture
Measurement angle
Focus on object
Measurement field
being measured
IEC  614/09

Figure 1 – Layout diagram of measurement setup
d) The LMD lens shall be focused on the light emitting plane of the display, and the LMD
integration time shall be an integer number (≥10) of one frame period. Shorter integration
times are acceptable if the detector is synchronized with the display frame rate.
5.3.3.2 High pixel count matrix displays (≥320 × 240 pixels)
The following high pixel count matrix applies.
a) When measuring matrix displays, the measurement field shall include more than 500
pixels.
b) The standard measuring distance l is 2,5V (for V ≥ 20 cm) or 50 cm (for V < 20 cm),
xo
where V is the height of the display active area or the shorter of the screen width and
height dimensions. The measuring distance shall be reported.
c) The angular aperture shall be less than or equal to 5°, and measurement field angle shall
be less than or equal to 2°. The measuring distance and the measurement field angle may
be adjusted to achieve a measuring field greater than 500 pixels area if setting the above
aperture angle is difficult.
d) Displays shall be operated at their design frame frequency. When using separate driving
signal equipment to operate a panel, the drive conditions shall be reported.
5.3.3.3 Low pixel count matrix displays (<320 × 240 pixels) and segmented displays
The following low pixel count matrix applies.
a) Low pixel count displays may contain fewer than 500 pixels. When the pixel number of the
measuring field is less than 500, it shall be noted in the report. The angular aperture shall
be less than or equal to 5°, and measurement field angle shall be less than or equal to 2°.
b) For segment displays, the angular aperture shall be less than or equal to 5°, and
measurement field angle shall be less than or equal to 2°. All measurements shall be
performed at the centre of a segment with the measuring area completely contained within
the segment.
c) When the measurement conditions do not satisfy the requirement of ≤2° for the
measurement field angle, or the measurement field includes fewer than 500 pixels, the
measured values for these parameters shall be reported.
6 Measuring methods for optical parameters
6.1 Luminance and its uniformity
6.1.1 Purpose
The purpose of this method is to measure the full screen display luminance and luminance
uniformity of OLED display modules under test.

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62341-6-1 © IEC:2009 – 9 –
6.1.2 Measuring conditions
The following measuring conditions apply.
a) Apparatus: A light measuring device that can measure luminance, driving power source,
and driving signal equipment.
b) Standard measuring environmental conditions; Darkroom conditions; Standard setup
conditions.
6.1.3 Measuring methods
6.1.3.1 Maximum full screen luminance
For full screen luminance proceed as follows.
a) Set the OLED display and the LMD under the standard measuring conditions.
b) Set up the measurement following the layout diagram shown in Figure 1.
c) For a monochromatic display, apply a signal to make the full screen emit at the highest
grey level. For a colour display, apply a white signal level of 100 % over the entire screen.
d) The measurement position is at the centre of the screen.
e) If luminance is measured for displays with impulse-driving or duty driving, the high peak
luminance of these displays can cause detector saturation errors. The accuracy of these
measurements can be checked by attenuating the light with a neutral density filter. If the
change in signal amplitude of the detector is proportional to the transmittance of the
neutral density filter, then there are no detector saturation errors. This method is for
measuring the maximum time-averaged full screen luminance.
f) For a segmented display, measure the luminance inside each unique colour segment
closest to the centre at its maximum signal level. The segment location measured shall be
reported.
6.1.3.2 4 % window luminance
This method shall measure the maximum time-averaged luminance of a small emitting region
in the centre of the active area. The centre luminance of a 4 % window is the maximum
window luminance.
a) Set the OLED display and the LMD under the standard measuring conditions.
b) Set up the measurement following the layout diagram shown in Figure 1.
c) Create a 4 % white window pattern on a black background in the centre of the active area,
as shown in Figure 2. The 4 % window (100 %, white screen) has corresponding sides that
are 1/5 the vertical and horizontal dimensions of the active area.
d) For a monochrome display, apply a signal at the highest grey level. For a colour display,
apply a white signal level of 100 %.
e) Measure the time-averaged luminance at the centre of the active area (position P in
0
Figure 3).
f) If luminance is measured for displays with impulse-driving or duty driving, the high peak
luminance of these displays can cause detector saturation errors. The accuracy of these
measurements can be checked by attenuating the light with a neutral density filter.
g) If luminance loading effects exist, reduce the area of the white window pattern and
measure the luminance in the centre. If this luminance is larger than the 4 % window
luminance, continue reducing the emitting area and take luminance measurements until
the luminance no longer increases, or the measurement area becomes too small (≤500
pixels). The maximum window luminance is the stable maximum luminance value reached
when reducing the emitting area. If no stable maximum luminance value can be obtained,
then the luminance measured with the 4 % white window pattern shall be used as the
maximum window luminance.

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SIST EN 62341-6-1:2011
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Luminance
measuring
position (P )
0
A
0
2H/5 H/5
H
IEC  615/09
4 % window luminance measuring pattern

Figure 2 – Luminance measuring pattern
6.1.3.3 Sampled luminance non-uniformity
To achieve luminance non-uniformity, proceed as follows.
a) Set up the measurement following the layout diagram shown in Figure 1.
b) For a monochrome display, apply a signal to make the full screen emit at the highest grey
level. For a colour display, apply a white signal level of 100 % over the entire screen.
c) Either 5 or 9 measurement points shall be used. For 5 points, use P to P . For 9 points,
0 4
use P to P , see Figure 3.
0 8
V
2V/5
V/5

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SIST EN 62341-6-1:2011
62341-6-1 © IEC:2009 – 11 –

H/2 H/10
P P P
1 5 2
P P P
8 0 6
P P P
4 7 3
H
IEC  616/09

Figure 3 – Measurement points
The average luminance is:
n
1
= L
i (1)
L ∑
av
()
n + 1
=0
i
where
n = 4 or 8. L is the measured luminance at location P .
i i
The luminance deviation at P is: ΔL = L - L .
i i i av
The result of measurement shall be recorded as shown in Table 1.
The luminance non-uniformity of the display is characterized as the maximum ΔL /L × 100 %.
i av
V/2
V/10
V

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Table 1 – Example of luminance non-uniformity
Measuring point Luminance L (ΔL /L ) × 100 %
i i av

2
cd/m
%
P 210 +1,9
0
P 205 –0,5
1
P 208 +1,0
2
P 199 –3,4
3
P 195 –5,3
4
P 211 +2,4
5
P 215 +4,4
6
P 204 –1,0
7
P 207 +0,5
8
2 2 2
L : 215 cd/m ; L : 195 cd/m ; Average luminance: 206 cd/m
max min

The type of driving signal shall be specified. Report the number of sampl
...