Organic light emitting diode (OLED) displays - Part 6-5: Measuring methods of dynamic range properties

IEC TS 62341-6-5:2019 (E) specifies the standard measurement conditions and dynamic range properties for OLED display panels and modules. More precisely, this document focuses on the specific aspects of the dynamic range properties.

General Information

Status
Published
Publication Date
16-Apr-2019
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
17-Apr-2019
Ref Project

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IEC TS 62341-6-5:2019 - Organic light emitting diode (OLED) displays - Part 6-5: Measuring methods of dynamic range properties
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IEC TS 62341-6-5
Edition 1.0 2019-04
TECHNICAL
SPECIFICATION
Organic light emitting diode (OLED) displays –
Part 6-5: Measuring methods of dynamic range properties
IEC TS 62341-6-5:2019-04(en)
---------------------- Page: 1 ----------------------
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IEC TS 62341-6-5
Edition 1.0 2019-04
TECHNICAL
SPECIFICATION
Organic light emitting diode (OLED) displays –
Part 6-5: Measuring methods of dynamic range properties
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.260 ISBN 978-2-8322-6834-6

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – IEC TS 62341-6-5:2019  IEC:2019
CONTENTS

FOREWORD ........................................................................................................................... 4

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms, definitions, and abbreviated terms ....................................................................... 6

3.1 Terms and definitions .............................................................................................. 6

3.2 Abbreviated terms ................................................................................................... 6

4 Standard measuring equipment and coordinate system ................................................... 6

4.1 Light measuring devices ......................................................................................... 6

4.2 Viewing direction coordinate system ....................................................................... 7

5 Measuring conditions ....................................................................................................... 8

5.1 Standard measuring environmental conditions ........................................................ 8

5.2 Power supply .......................................................................................................... 8

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 dynamic range properties ............................................................. 9

6.1 Peak luminance ...................................................................................................... 9

6.1.1 Purpose ........................................................................................................... 9

6.1.2 Measuring conditions ..................................................................................... 10

6.1.3 Set-up ........................................................................................................... 10

6.1.4 Measurement of peak luminance ................................................................... 10

6.2 Black level and black constancy ............................................................................ 11

6.2.1 Purpose ......................................................................................................... 11

6.2.2 Measuring conditions ..................................................................................... 11

6.2.3 Set-up ........................................................................................................... 11

6.2.4 Measurement of black level and black constancy according to

background .................................................................................................... 12

6.3 Local contrast ....................................................................................................... 13

6.3.1 Purpose ......................................................................................................... 13

6.3.2 Measuring conditions ..................................................................................... 13

6.3.3 Set-up ........................................................................................................... 13

6.3.4 Measurement of local contrast ....................................................................... 13

6.4 Dynamic range coverage ...................................................................................... 14

6.4.1 Purpose ......................................................................................................... 14

6.4.2 Measuring conditions ..................................................................................... 14

6.4.3 Set-up ........................................................................................................... 14

6.4.4 Measurement of dynamic range coverage ...................................................... 14

Bibliography .......................................................................................................................... 16

Figure 1 – Representation of the viewing direction .................................................................. 8

Figure 2 – DUT installation conditions ..................................................................................... 9

Figure 3 – Test patterns for peak luminance measurement ................................................... 10

Figure 4 – Test pattern for black level and constancy measurement...................................... 12

Figure 5 – Test pattern for local contrast ............................................................................... 13

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IEC TS 62341-6-5:2019  IEC:2019 – 3 –

Table 1 – Working example for peak luminance .................................................................... 11

Table 2 – Working example for black level and constancy ..................................................... 12

Table 3 – Working example for local contrast ........................................................................ 14

Table 4 – Working example for dynamic range coverage ...................................................... 15

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– 4 – IEC TS 62341-6-5:2019  IEC:2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ORGANIC LIGHT EMITTING DIODE (OLED) DISPLAYS –
Part 6-5: Measuring methods of dynamic range properties
FOREWORD

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Technical specifications are subject to review within three years of publication to decide

whether they can be transformed into International Standards.

IEC TS 62341-6-5, which is a technical specification, has been prepared by IEC technical

committee 110: Electronic displays.
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IEC TS 62341-6-5:2019  IEC:2019 – 5 –
The text of this technical specification is based on the following documents:
Enquiry draft Report on voting
110/1017/DTS 110/1063A/RVC

Full information on the voting for the approval of this technical specification can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts in the IEC 62341 series, published 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 document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.
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– 6 – IEC TS 62341-6-5:2019  IEC:2019
ORGANIC LIGHT EMITTING DIODE (OLED) DISPLAYS –
Part 6-5: Measuring methods of dynamic range properties
1 Scope

This part of IEC 62341 specifies the standard measurement conditions and dynamic range

properties for OLED display panels and modules. More precisely, this document focuses on

the specific aspects of the dynamic range properties.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their

content constitutes requirements 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.

IEC 62341-1-2:2014, Organic light emitting diode (OLED) displays – Part 1-2: Terminology

and letter symbols
3 Terms, definitions, and abbreviated terms
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 62341-1-2 and the

following apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
dynamic range coverage

capability of the representable dynamic range relative to the reference input signal

EXAMPLE IEC sRGB, BT.1886, BT.2100, BT.2020, SMPTE ST.2084.
3.2 Abbreviated terms
APL average picture level

CIE Commission Internationale de l’Eclairage (International Commission on Illumination)

DUT device under test
LMD light measuring device
4 Standard measuring equipment and coordinate system
4.1 Light measuring devices

The system configurations and/or operating conditions of the measuring equipment shall

comply with the structure specified for each item.
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IEC TS 62341-6-5:2019  IEC:2019 – 7 –

To ensure reliable measurements, the following requirements apply to the light measuring

equipment:

1) Luminance meter[1 : the instrument's spectral responsivity shall comply with the CIE

’ .
photopic luminous efficiency function with a CIE-f value no greater than 3 % [2]
2) Spectroradiometer: the wavelength range shall be at least fr
...

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