IEC 62977-3-6:2025
(Main)Electronic displays - Part 3-6: Evaluation of optical performance - Spatial resolution
Electronic displays - Part 3-6: Evaluation of optical performance - Spatial resolution
IEC 62977-3-6:2025 specifies the measuring and evaluation methods of spatial resolution of flat panel emissive displays, by determining their contrast modulation and modulation transfer function (MTF).
General Information
Standards Content (Sample)
IEC 62977-3-6 ®
Edition 1.0 2025-06
INTERNATIONAL
STANDARD
Electronic displays –
Part 3-6: Evaluation of optical performance – Spatial resolution
ICS 31.120; 31.260 ISBN 978-2-8327-0456-1
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– 2 – IEC 62977-3-6:2025 © IEC 2025
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, abbreviated terms, letters and symbols. 7
3.1 Terms and definitions . 7
3.2 Abbreviated terms. 8
3.3 Letters and symbols . 8
4 Standard measuring equipment . 9
4.1 General . 9
4.2 Equipment . 9
4.2.1 Digital pattern generator . 9
4.2.2 Imaging LMD . 10
5 Standard measuring conditions . 11
5.1 Standard measuring environmental conditions . 11
5.2 Standard measuring darkroom conditions . 11
5.3 Measurement locations on the screen . 11
5.4 Input signal condition . 12
6 Display contrast modulation measurement . 12
6.1 General . 12
6.2 Contrast modulation . 12
6.3 Measuring method with grille pattern . 12
6.4 Spatial resolution evaluation using contrast modulation . 15
7 Display MTF measurement . 16
7.1 General . 16
7.2 MTF concept for sampled imaging systems . 17
7.3 Line-based method . 17
8 Reporting . 20
Annex A (informative) Evaluation of spatial resolution . 21
Annex B (normative) Edge-based LMD MTF measurement. 22
Annex C (informative) Precautions for spatial resolution measurement methods . 24
C.1 Sampling issues in grille pattern luminance contrast measurement method . 24
C.2 Constraints of the grille pattern luminance contrast and the line-based MTF
measurement methods . 24
C.3 Colour evaluation . 25
Annex D (informative) Example of line-based MTF evaluation . 26
Annex E (informative) Constraints on curved panel evaluation . 29
Bibliography . 30
Figure 1 – Diagram of DUT and measurement system . 10
Figure 2 – Example of nine measurement locations on DUT screen . 11
Figure 3 – Input signal image for grille pattern . 13
Figure 4 – Grille pattern examples of signal image on DUT screen . 13
Figure 5 – Example of luminance profile . 14
Figure 6 – Evaluation of contrast modulation measurement . 16
Figure 7 – Schematic of the display MTF measurement setup . 17
Figure 8 – Intermediate results obtained at different points in the MTF measurement
process . 19
Figure A.1 – Example image of luminance profile . 21
Figure B.1 – Schematic of the edge-based LMD MTF measurement setup . 22
Figure B.2 – Flow diagram of the edge-based LMD MTF measurement process . 23
Figure C.1 – Examples of display physical sub-pixel arrangements . 25
Figure D.1 – Computer-generated 200 (W) × 200 (H)-pixel images of a vertical line
displayed on the screen with the RGB-stripe array having the MTF of
|sinc(ξ , ξ )| for pixel ratios of 2 and 7 . 26
x,LMD y,LMD
Figure D.2 – RGB stripe arrangement: Layout of the micro-colour-filter array and
vertically averaged luminance profile . 26
Figure D.3 – Reference display MTF . 27
Figure D.4 – Flowchart of the algorithm for the line-based display MTF measurement . 27
Figure D.5 – Slanted line image captured by LMD (left) and obtained LSF (right) . 28
Table 1 – Symbols in this document . 9
– 4 – IEC 62977-3-6:2025 © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRONIC DISPLAYS –
Part 3-6: Evaluation of optical performance – Spatial resolution
FOREWORD
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IEC 62977-3-6 has been prepared by IEC technical committee 110: Electronic displays. It is an
International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
110/1752/FDIS 110/1769/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 62977 series, published under the general title Electronic 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 webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
– 6 – IEC 62977-3-6:2025 © IEC 2025
INTRODUCTION
Historically, the size of a scanned dot drawn on a cathode-ray tube display with an electron
beam was the ma
...
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