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BS IEC 62341-6-1:2025 Organic light emitting diode (OLED) displays - Measuring methods of optical and electro-optical parameters, 2025
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- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms, definitions and abbreviated terms [Go to Page]
- 3.1 Terms and definitions
- 3.2 Abbreviated terms
- 4 Structure of measuring equipment
- 5 Standard measuring conditions [Go to Page]
- 5.1 Standard measuring environmental conditions
- 5.2 Standard measuring dark room conditions
- 5.3 Standard setup conditions [Go to Page]
- 5.3.1 General
- 5.3.2 Adjustment of OLED displays
- 5.3.3 Starting conditions of measurements
- 5.3.4 Measuring equipment requirements
- Figures [Go to Page]
- Figure 1 – Layout diagram of measurement setup
- 5.4 Standard locations of measurement field
- Figure 2 – Standard measurement positions in the display active area
- 5.5 Standard test patterns
- Figure 3 – Test pattern scaling used to define the area size of the coloured rectangles in the active area of the display
- Figure 4 – Medium APL loading series of red, green, blue, and white test patterns used for basic luminance, colour, and uniformity measurements
- Figure 5 – Low and high APL loading versions of CTR pattern
- Figure 6 – Standard medium APL RGBCMY test pattern used for centre luminance and colour measurements with 25 % APL
- 6 Measuring methods for optical parameters [Go to Page]
- 6.1 Primary luminance, colour, and uniformity of full-colour high-resolution displays [Go to Page]
- 6.1.1 Purpose
- Figure 7 – Examples of variable signal loading RGBCMY test patterns used for centre luminance and colour measurements
- Tables [Go to Page]
- Table 1 – Standard digital-equivalent input signals for rendering the white, primary and secondary colours in test patterns [Go to Page]
- 6.1.2 Measuring conditions
- 6.1.3 Measuring methods for high-resolution full colours
- Figure 8 – Sequence for measuring luminance and colour at the nine standard display positions for all coloured tile patterns [Go to Page]
- 6.1.4 Maximum luminance of white and RGB primaries
- 6.1.5 Average colour of maximum white and RGB primaries
- Table 2 – Example of luminance measured for the same colour patch at the standard nine screen positions and the resulting luminance non-uniformity
- Table 3 – Example of the chromaticity measured for the same colour patch at the nine standard screen positions and the resulting chromaticity non-uniformity [Go to Page]
- 6.1.6 Luminance uniformity of white and RGB primaries
- 6.1.7 Chromaticity non-uniformity of maximum white and RGB primaries
- 6.1.8 Colour additivity of maximum white and RGB primaries
- 6.1.9 White correlated colour temperature
- 6.2 Primary luminance, chromaticity and uniformity of low-resolution displays [Go to Page]
- 6.2.1 Purpose
- 6.2.2 Measuring conditions
- 6.2.3 Measuring methods for low-resolution displays and segmented displays
- Figure 9 – Chromaticity of blackbody source at various temperatures as represented on the CIE 1931 chromaticity diagram
- 6.3 Signal loading [Go to Page]
- 6.3.1 Purpose
- 6.3.2 Measuring conditions
- 6.3.3 Measuring methods
- 6.4 Dark room contrast ratio [Go to Page]
- 6.4.1 Purpose
- 6.4.2 Measuring conditions
- 6.4.3 Measuring method
- Table 4 – Scaling the size of the colour boxes in the APL loading pattern relative to the screen dimensions
- 6.5 Chromaticity gamut area [Go to Page]
- 6.5.1 Purpose
- 6.5.2 Measuring conditions
- 6.5.3 Measuring methods
- 6.5.4 Chromaticity gamut area in CIE 1931 chromaticity diagram
- 6.6 Colour gamut volume [Go to Page]
- 6.6.1 Purpose
- Figure 10 – Example representation of the primary colours in the CIE 1931 chromaticity diagram [Go to Page]
- 6.6.2 Measuring conditions
- 6.6.3 Measuring methods
- Figure 11 – Example of range in colours produced by an sRGB display as represented by the CIELAB colour space and by visualization using gamut rings
- 7 Measuring methods for power consumption [Go to Page]
- 7.1 Purpose
- 7.2 Measuring conditions
- 7.3 Measuring methods [Go to Page]
- 7.3.1 Measuring the power consumption relevant to luminance of the OLED display module without signal decoding process
- Table 5 – Example of report format for CIELAB gamut volume [Go to Page]
- 7.3.2 Measuring the power consumption of the OLED display module’s embedded video connection terminal with a signal decoding process
- Figure 12 – Example of measurement setup of power consumption
- Table 6 – Example of a module power consumption measurements summary sheet
- Figure 13 – Example of measurement setup of power consumption with embedded video terminal
- Table 7 – Example of module power consumption measurements with contents
- Table 8 – Example of module power consumption measurements with images
- Annexes [Go to Page]
- Annex A (normative) Response time of passive matrix display panels
- Figure A.1 – Relationship between driving signal and optical response times
- Annex B (normative) Luminance current efficiency
- Figure B.1 – Example of a measurement configurationfor measuring luminance current efficiency
- Annex C (informative) Veiling glare frustum
- Figure C.1 – Pattern for veiling glare frustum
- Annex D (informative) Methods to obtain the correlated colour temperature (CCT) from chromaticity coordinates
- Table D.1 – xe, ye, Ai and ti for Formula (D.3) and Formula (D.4)
- Figure D.1 – CIE 1931 XYZ chromaticity diagram
- Figure D.2 – Blackbody locus (Planckian locus) and isotemperature lines in CIE 1931 chromaticity diagram
- Annex E (informative) Measuring performance of modern colour-managed displays and panels
- Figure E.1 – Legacy model where the independent drive electronics provide a direct correlation between the input RGB signals and the display’s colour primaries
- Figure E.2 – Examples of modern drive models using multi-dimensional LUTs for RGB (top) and multi-chromatic (bottom) displays
- Table E.1 – Example of luminance data for an RGB display and an RGBW OLED display
- Figure E.3 – Example of signal loading behaviour for an RGBW display (top) and RGB (bottom) OLED display
- Figure E.4 – Low APL loading test pattern with small box size(1/9 of the screen size dimensions)
- Figure E.5 – Signal loading profiles for several input colours measured at the centre of the test pattern using Figure 8
- Annex F (informative) Simple window luminance and colour measurements
- Figure F.1 – Example of simple 4 % white window pattern at the centre of the screen
- Bibliography [Go to Page]
