{"id":363542,"date":"2024-10-20T01:46:13","date_gmt":"2024-10-20T01:46:13","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iec-62977-2-12021\/"},"modified":"2024-10-26T02:46:13","modified_gmt":"2024-10-26T02:46:13","slug":"bs-iec-62977-2-12021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iec-62977-2-12021\/","title":{"rendered":"BS IEC 62977-2-1:2021"},"content":{"rendered":"

This part of IEC 62977 specifies standard measurement conditions and measuring methods for determining the optical characteristics of electronic display modules and systems. These methods apply to emissive and transmissive direct view displays that render real 2D images on a flat panel. This document evaluates the optical characteristics of these displays under darkroom conditions. This document applies to the testing of display performance in response to standard analogue or digital input signals that are not absolute luminance encoded. The input signal is relative RGB without metadata information that codes for real luminance, colour space or colour coordinates. These methods are limited to input signals with typical OETFs such as defined in IEC 61966-2-1, ITU BT. Rec. 601, ITU BT. Rec.709, and ITU BT. Rec.2020. The tests in this document are not approved for use with HDR input signals.<\/p>\n

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NOTE A flat panel or flat panel display is a display with a flat surface and minimal depth that emits visible light from the surface. The display is subdivided into an array of electronically driven pixels which can be light valves modulating a backlight, or self-luminous. Emissive\/transmissive\/reflective hybrid displays can be flat panel or flat panel displays.<\/p>\n<\/blockquote>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
4<\/td>\nCONTENTS <\/td>\n<\/tr>\n
8<\/td>\nFOREWORD <\/td>\n<\/tr>\n
10<\/td>\nINTRODUCTION
Tables
Table 1 \u2013 Summary of display characteristics <\/td>\n<\/tr>\n
11<\/td>\n1 Scope
2 Normative references <\/td>\n<\/tr>\n
12<\/td>\n3 Terms, definitions and abbreviated terms
3.1 Terms and definitions <\/td>\n<\/tr>\n
13<\/td>\n3.2 Abbreviated terms
4 General
4.1 Measured basic quantities
4.2 Electrical driving of the display (depending on the nature of the display) <\/td>\n<\/tr>\n
14<\/td>\n4.3 Data acquisition timing and display driving
4.3.1 Stationary measurements
4.3.2 Properties of display under test
5 Standard measuring conditions
5.1 Standard measuring environmental conditions
5.2 Standard measuring darkroom conditions
5.3 Standard setup conditions
5.3.1 General
5.3.2 Adjustment of display <\/td>\n<\/tr>\n
15<\/td>\n5.3.3 Starting conditions of measurements
5.3.4 Conditions of measuring equipment <\/td>\n<\/tr>\n
16<\/td>\nFigures
Figure 1 \u2013 Layout diagram of measurement setup with terminology <\/td>\n<\/tr>\n
17<\/td>\n5.4 Location of measurement field <\/td>\n<\/tr>\n
18<\/td>\n5.5 Standard test patterns
5.6 Viewing direction coordinate system
Figure 2 \u2013 Example of measurement locations with nine measurement locationsequally spaced in the display active area <\/td>\n<\/tr>\n
19<\/td>\n6 Simple box optical measurement methods
6.1 General
6.2 Test patterns
Figure 3 \u2013 Representation of the viewing direction, or direction of measurement <\/td>\n<\/tr>\n
20<\/td>\n6.3 Luminance
6.3.1 Purpose
6.3.2 Measuring conditions
6.3.3 Measuring method
Figure 4 \u2013 Example of centre box test patterns using the standard 4 % and10 % area boxes <\/td>\n<\/tr>\n
21<\/td>\n6.4 Darkroom contrast ratio
6.4.1 Purpose
6.4.2 Measuring conditions
6.4.3 Measuring method <\/td>\n<\/tr>\n
22<\/td>\n6.5 Luminance uniformity
6.5.1 Purpose
6.5.2 Measuring conditions
6.5.3 Measuring method
Figure 5 \u2013 Example of uniformity measurement locationswith nine measurement locations <\/td>\n<\/tr>\n
23<\/td>\n6.6 Chromaticity
6.6.1 Purpose
6.6.2 Measuring conditions
Table 2 \u2013 Example of luminance of white, red, green, and blue measuredat nine screen locations and the resulting average luminance <\/td>\n<\/tr>\n
24<\/td>\n6.6.3 Measuring method
6.7 White chromaticity and correlated colour temperature
6.7.1 Purpose
6.7.2 Measuring conditions
6.7.3 Measuring method <\/td>\n<\/tr>\n
25<\/td>\n6.8 Chromaticity non-uniformity
6.8.1 Purpose
6.8.2 Measuring conditions
6.8.3 Measuring method <\/td>\n<\/tr>\n
26<\/td>\n6.9 Chromaticity\/colour gamut area
6.9.1 Purpose
6.9.2 Measuring conditions
Table 3 \u2013 Example of a white colour measured at nine screen locationsand the resulting chromaticity non-uniformity <\/td>\n<\/tr>\n
27<\/td>\n6.9.3 Measuring method
Table 4 \u2013 Standard digital-equivalent input signals for rendering the white,primary and secondary colours in test patterns <\/td>\n<\/tr>\n
28<\/td>\nFigure 6 \u2013 Examples of a display with colour boundaries representedby the black triangle in two common chromaticity diagrams <\/td>\n<\/tr>\n
29<\/td>\n6.9.4 Chromaticity\/colour gamut area in CIE 1931 and CIE 1976 chromaticity diagram <\/td>\n<\/tr>\n
30<\/td>\n6.10 Luminance and colour variation with viewing direction
6.10.1 Purpose
6.10.2 Measuring conditions
6.10.3 Measuring method <\/td>\n<\/tr>\n
31<\/td>\nFigure 7 \u2013 Top view example of configurations for measuring luminance and colourin the horizontal viewing direction <\/td>\n<\/tr>\n
32<\/td>\n7 Display multi-colour optical measuring methods
7.1 General
7.2 Test patterns
Figure 8 \u2013 Side view example of configurations for measuring luminanceand colour in the vertical viewing direction <\/td>\n<\/tr>\n
33<\/td>\nFigure 9 \u2013 Standard medium APL loading version of the colour tile test pattern with red,green, blue, and white boxes used for luminance and colour measurements
Figure 10 \u2013 Medium APL loading version of colour tile patterns illustrating the sequence of test patterns used for luminance and colour measurements <\/td>\n<\/tr>\n
35<\/td>\n7.3 Luminance
7.3.1 Purpose
7.3.2 Measuring conditions
Figure 11 \u2013 Standard medium APL RGBCMY test pattern used forcentre luminance and colour measurements with 25 % APL <\/td>\n<\/tr>\n
36<\/td>\n7.3.3 Measuring method
Figure 12 \u2013 Sequence for measuring luminance at the nine display locationsfor all coloured tile patterns <\/td>\n<\/tr>\n
37<\/td>\n7.4 Darkroom contrast ratio
7.4.1 Purpose
7.4.2 Measuring conditions
7.4.3 Measuring method
7.5 Luminance uniformity
7.6 Chromaticity, tristimulus values, and spectra
7.6.1 Purpose <\/td>\n<\/tr>\n
38<\/td>\n7.6.2 Measuring conditions
7.6.3 Measuring method
7.7 White chromaticity and correlated colour temperature
7.7.1 Purpose
7.7.2 Measuring conditions
7.7.3 Measuring method <\/td>\n<\/tr>\n
39<\/td>\n7.8 Chromaticity\/colour gamut area
7.8.1 Purpose
7.8.2 Measuring conditions
7.8.3 Measuring method
7.8.4 Chromaticity\/colour gamut area in CIE 1931 and CIE 1976 chromaticity diagram <\/td>\n<\/tr>\n
40<\/td>\n7.9 Chromaticity non-uniformity
7.10 Luminance and colour variation with viewing direction
7.10.1 Purpose
7.10.2 Measuring conditions
7.10.3 Measuring method <\/td>\n<\/tr>\n
41<\/td>\n8 CIELAB colour gamut volume
8.1 Purpose <\/td>\n<\/tr>\n
42<\/td>\n8.2 Measuring conditions
8.3 Measuring method <\/td>\n<\/tr>\n
44<\/td>\nFigure 13 \u2013 Example of range in colours produced by a given displayas represented by the CIELAB colour space
Table 5 \u2013 Example of report format for CIELAB gamut volume <\/td>\n<\/tr>\n
45<\/td>\nAnnex A (normative)RGB boundary colours for CIELAB colour gamut volume measurements
A.1 General
A.2 Equally-spaced 98 boundary colours on the RGB cube <\/td>\n<\/tr>\n
46<\/td>\nTable A.1 \u2013 Equally-spaced 98 RGB boundary colours used for CIELABcolour gamut volume measurements <\/td>\n<\/tr>\n
48<\/td>\nA.3 Recommended 602 boundary colours on the RGB cube
Table A.2 \u2013 Recommended RGB boundary colours used for CIELABcolour gamut volume measurements <\/td>\n<\/tr>\n
63<\/td>\nAnnex B (informative)Calculation method for CIELAB gamut volume
B.1 Purpose
B.2 Procedure for calculating the colour gamut volume
Figure B.1 \u2013 Analysis flow chart for calculating the CIELAB gamut volume <\/td>\n<\/tr>\n
64<\/td>\nB.3 Number of sampled colours
B.4 RGB cube surface subdivision method for CIELAB colour gamut volume calculation <\/td>\n<\/tr>\n
66<\/td>\nFigure B.2 \u2013 Example of tessellation using a 5 x 5 gridof surface colours on the RGB cube <\/td>\n<\/tr>\n
67<\/td>\nTable B.1 \u2013 Example data format used for CIELABcolour gamut volume measurements <\/td>\n<\/tr>\n
68<\/td>\nFigure B.3 \u2013 Example of tessellation for the RGB cube using a 3 x 3 grid
Figure B.4 \u2013 Example of tessellation for the CIELAB gamut volume using a 3 x 3 grid <\/td>\n<\/tr>\n
76<\/td>\nAnnex C (informative)Significance of Clause 6
C.1 Summary
C.2 Significance of Clause 6 during the research and development stage
Figure C.1 \u2013 Example of conceptual scheme for the supply chain of displays and the usage of the measurement methods (MM) of Clause 6 and Clause 7 <\/td>\n<\/tr>\n
77<\/td>\nC.3 Significance of Clause 6 during the manufacturing stage
Figure C.2 \u2013 Conceptual example of the evaluation of the components <\/td>\n<\/tr>\n
78<\/td>\nC.4 Significance of Clause 6 during the evaluation of other test results
Figure C.3 \u2013 Example of a mechanical stress test <\/td>\n<\/tr>\n
79<\/td>\nAnnex D (informative)Colour-signal luminance <\/td>\n<\/tr>\n
80<\/td>\nAnnex E (informative)Gamut rings
E.1 General <\/td>\n<\/tr>\n
81<\/td>\nE.2 Visualization method
Figure E.1 \u2013 Example of transformation of the CIELAB gamut volume (top) illustrated by L* slices into the concentric areas of the gamut ring representation (bottom) <\/td>\n<\/tr>\n
82<\/td>\nE.3 Software example
Figure E.2 \u2013 Example of calculation of gamut rings using the data from Table B.1 <\/td>\n<\/tr>\n
84<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Electronic displays – Measurements of optical characteristics. Fundamental measurements<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2021<\/td>\n86<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":363552,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-363542","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/363542","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/363552"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=363542"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=363542"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=363542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}