IEC 62977-2-1:2021

Electronic displays - Part 2-1: Measurements of optical characteristics - Fundamental measurements

IEC 62977-2-1:2021

Name:IEC 62977-2-1:2021   Standard name:Electronic displays - Part 2-1: Measurements of optical characteristics - Fundamental measurements
Standard number:IEC 62977-2-1:2021   language:English language
Release Date:04-Jan-2021   technical committee:TC 110 - Electronic displays
Drafting committee:WG 13 - TC 110/WG 13   ICS number:31.120 - Electronic display devices

IEC 62977-2-1
Edition 1.0 2021-01
INTERNATIONAL
STANDARD
colour
inside
Electronic displays –
Part 2-1: Measurements of optical characteristics – Fundamental measurements





your local IEC member National Committee for further information.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de
CH-1211 Geneva 20
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC online collection - oc.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc

If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
.
IEC 62977-2-1
Edition 1.0 2021-01
INTERNATIONAL
STANDARD
colour
inside
Electronic displays –
Part 2-1: Measurements of optical characteristics – Fundamental measurements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.120; 31.260 ISBN 978-2-8322-9225-9

– 2 – IEC 62977-2-1:2021 © IEC 2021
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms, definitions and abbreviated terms . 10
3.1 Terms and definitions . 10
3.2 Abbreviated terms . 11
4 General . 11
4.1 Measured basic quantities . 11
4.2 Electrical driving of the display (depending on the nature of the display) . 11
4.3 Data acquisition timing and display driving . 12
4.3.1 Stationary measurements . 12
4.3.2 Properties of display under test . 12
5 Standard measuring conditions . 12
5.1 Standard measuring environmental conditions . 12
5.2 Standard measuring darkroom conditions . 12
5.3 Standard setup conditions . 12
5.3.1 General . 12
5.3.2 Adjustment of display . 12
5.3.3 Starting conditions of measurements . 13
5.3.4 Conditions of measuring equipment . 13
5.4 Location of measurement field . 15
5.5 Standard test patterns . 16
5.6 Viewing direction coordinate system . 16
6 Simple box optical measurement methods . 17
6.1 General . 17
6.2 Test patterns. 17
6.3 Luminance . 18
6.3.1 Purpose . 18
6.3.2 Measuring conditions . 18
6.3.3 Measuring method . 18
6.4 Darkroom contrast ratio . 19
6.4.1 Purpose . 19
6.4.2 Measuring conditions . 19
6.4.3 Measuring method . 19
6.5 Luminance uniformity . 20
6.5.1 Purpose . 20
6.5.2 Measuring conditions . 20
6.5.3 Measuring method . 20
6.6 Chromaticity . 21
6.6.1 Purpose . 21
6.6.2 Measuring conditions . 21
6.6.3 Measuring method . 22
6.7 White chromaticity and correlated colour temperature . 22
6.7.1 Purpose . 22
6.7.2 Measuring conditions . 22

6.7.3 Measuring method . 22
6.8 Chromaticity non-uniformity . 23
6.8.1 Purpose . 23
6.8.2 Measuring conditions . 23
6.8.3 Measuring method . 23
6.9 Chromaticity/colour gamut area. 24
6.9.1 Purpose . 24
6.9.2 Measuring conditions . 24
6.9.3 Measuring method . 25
6.9.4 Chromaticity/colour gamut area in CIE 1931 and CIE 1976 chromaticity
diagram . 27
6.10 Luminance and colour variation with viewing direction . 28
6.10.1 Purpose . 28
6.10.2 Measuring conditions . 28
6.10.3 Measuring method . 28
7 Display multi-colour optical measuring methods . 30
7.1 General . 30
7.2 Test patterns. 30
7.3 Luminance . 33
7.3.1 Purpose . 33
7.3.2 Measuring conditions . 33
7.3.3 Measuring method . 34
7.4 Darkroom contrast ratio . 35
7.4.1 Purpose . 35
7.4.2 Measuring conditions . 35
7.4.3 Measuring method . 35
7.5 Luminance uniformity . 35
7.6 Chromaticity, tristimulus values, and spectra . 35
7.6.1 Purpose . 35
7.6.2 Measuring conditions . 36
7.6.3 Measuring method . 36
7.7 White chromaticity and correlated colour temperature . 36
7.7.1 Purpose . 36
7.7.2 Measuring conditions . 36
7.7.3 Measuring method . 36
7.8 Chromaticity/colour gamut area. 37
7.8.1 Purpose . 37
7.8.2 Measuring conditions . 37
7.8.3 Measuring method . 37
7.8.4 Chromaticity/colour gamut area in CIE 1931 and CIE 1976 chromaticity
diagram . 37
7.9 Chromaticity non-uniformity . 38
7.10 Luminance and colour variation with viewing direction . 38
7.10.1 Purpose . 38
7.10.2 Measuring conditions . 38
7.10.3 Measuring method . 38
8 CIELAB colour gamut volume . 39
8.1 Purpose . 39
8.2 Measuring conditions . 40

– 4 – IEC 62977-2-1:2021 © IEC 2021
8.3 Measuring method . 40
Annex A (normative) RGB boundary colours for CIE
...

  • Relates Information
  • ISO 8130-9:1992

    ISO 8130-9:1992 - Coating powders
    09-28
  • EN 352-2:2020/FprA1

    EN 352-2:2021/oprA1:2023
    09-28
  • IEC TS 61158-4:1999

    IEC TS 61158-4:1999 - Digital data communications for measurement and control - Fieldbus for use in industrial control systems - Part 4: Data Link protocol specification Released:3/24/1999 Isbn:2831847656
    09-28
  • HD 566 S1:1990

    HD 566 S1:1998
    09-28
  • ISO 5131:1982/Amd 1:1992

    ISO 5131:1982/Amd 1:1992
    09-28
  • EN 60598-2-22:1990

    EN 60598-2-22:1996
    09-27
  • ISO 8504-2:1992

    ISO 8504-2:1992 - Preparation of steel substrates before application of paints and related products -- Surface preparation methods
    09-27
  • EN 12165:2024

    prEN 12165:2022
    09-27
  • IEC TS 61158-6:1999

    IEC TS 61158-6:1999 - Digital data communications for measurement and control - Fieldbus for use in industrial control systems - Part 6: Application Layer protocol specification Released:3/24/1999 Isbn:2831847613
    09-27
  • ISO 4252:1992

    ISO 4252:1992 - Agricultural tractors -- Operator's workplace, access and exit -- Dimensions
    09-27