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BSI PD IEC TS 62977-3-1:2019

BSI PD IEC TS 62977-3-1:2019

$167.15

Electronic displays – Evaluation of optical performances. Colour difference based viewing direction dependence

Published By Publication Date Number of Pages
BSI 2019 34
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This part of IEC 62977 specifies the evaluation method of the viewing direction characteristics of electronic display devices under dark-room conditions. More specifically, this document focuses on the evaluation of the viewing direction characteristics based on colour difference.

This document applies to colour matrix displays, which are based on transmissive or emissive technologies.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
6 FOREWORD
8 INTRODUCTION
9 1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 General
3.2 Abbreviated terms
10 4 Standard measuring equipment and coordinate system
4.1 Light measuring device
4.2 Viewing direction coordinate system
Figures
Figure 1 – Illustration of viewing directions θ and φ
11 5 Measuring conditions
5.1 Standard measuring environmental conditions
5.2 Power supply
5.3 Warm-up time
5.4 Standard measuring dark-room conditions
5.5 Standard set-up conditions
5.5.1 General
5.5.2 Adjustment of display
12 6 Measurement methods
6.1 Measurement procedures
Figure 2 – Measuring layout for horizontal viewing direction dependency
13 6.2 Test signals (test charts)
Figure 3 – Measuring layout for vertical viewing direction dependency
Tables
Table 1 – Measurement directions for TV in living rooms
Table 2 – Measurement directions for mobile displays
14 7 Calculation of chromaticity and colour difference
Table 3 – Input signal of 4 % window for viewing direction measurements
16 Table 4 – Attenuation factors
17 8 Reporting
Table 5 – Parametric factors
18 Table 6 – Example of reporting format
21 Annex A (informative) Perception of colour difference
Table A.1 – Perception of colour difference
22 Annex B (informative) Other attenuation factors
B.1 General
B.2 Attenuation factors proposed
Table B.1 –- Attenuation factors
23 Annex C (informative) Other parameters
C.1 Measurement of half luminance angle
C.2 Measurement of gamma distortion from the viewing directions
24 Figure C.1 – Test pattern for gamma measurement
25 Figure C.2 – Example of linear regression of log(△Lj) versus log(△Vj) in normal direction (0°)
Table C.1 – Worked-out example for gamma distortion from viewing direction
26 Annex D (informative) Translation of RGB input signal to output colours
Table D.1 – Test colours
27 Table D.2 – RGB translation values for 8-bit colour (BT.2020 colour reference)
28 Table D.3 – RGB translation values for 10-bit colour (BT.2020 colour reference)
29 Table D.4 – RGB translation values for 10 bit colour (BT.709 colour reference)
30 Annex E (informative) Simulation result of chromaticity error versus number of pixels in the measurement area
E.1 General
E.2 Simulation conditions
Figure E.1 – Relative spectral radiance (left: LCD, right: OLED)
Table E.1– DUT’s primary chromaticity and chromaticity area gamut (% NTSC)
31 E.3 Simulation result
Figure E.2 – Measuring area versus DUT pixels
Table E.2 – Number of sub-pixels in the measurement area
Table E.3 – Simulation result of chromaticity error (around 100 pixels)
32 Figure E.3 – Number of measuring pixels versus chromaticity error
33 Bibliography

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BSI PD IEC TS 62977-3-1:2019
$167.15