Overview
IEC TS 62341-6-5:2019 defines standardized methods for measuring dynamic range properties of organic light emitting diode (OLED) display panels and modules. Part 6-5 of the IEC 62341 series focuses on how to quantify the dynamic behaviour of OLED displays - including peak luminance, black level and constancy, local contrast, and overall dynamic range coverage - under controlled measurement conditions.
Key Topics and Requirements
- Scope: Measurement conditions and specific aspects of dynamic range properties for OLED panels and modules.
- Measurement methods: Procedures for
- Peak luminance (test patterns and set-up)
- Black level and black constancy (background-dependent measurements)
- Local contrast (spot measurements and contrast metrics)
- Dynamic range coverage (capability relative to reference input signals such as sRGB, BT.1886, BT.2100)
- Standard measuring equipment:
- Luminance meters: spectral responsivity to match CIE photopic luminous efficiency with CIE-f ≤ 3%.
- Spectroradiometers: wavelength range 380–780 nm; wavelength accuracy ±0.5 nm; stray-light corrections recommended.
- Gonio-photometric systems: angular accuracy better than 0.5° for inclination and azimuth.
- Coordinate system: Viewing direction defined by inclination angle θ and azimuth φ (3-o’clock = right, 12-o’clock = top, etc.).
- Environmental and electrical conditions:
- Temperature 25 °C ± 3 °C; relative humidity 25–85 % RH; atmospheric pressure 86–106 kPa.
- Power supply: rated voltage ±0.5 %; frequency ±0.2 %.
- Measurements after sufficient warm-up time.
- Documentation: Figures, test patterns and working-example tables are provided for repeatable measurement set-ups.
Applications
- Display manufacturers: consistent internal QA and R&D characterization of OLED panel dynamic performance.
- Test laboratories and certification bodies: standardized measurement reports for product compliance and benchmarking.
- System integrators and OEMs: verify dynamic range coverage for content workflows (HDR/SDR) and tune display drivers or local dimming algorithms.
- Display engineers and researchers: compare peak luminance, black level stability, local contrast and dynamic range coverage across designs.
Related Standards
- Normative reference: IEC 62341-1-2:2014 (terminology and letter symbols).
- Dynamic range context: referenced example input transfer functions and colour spaces such as sRGB, BT.1886, BT.2100, BT.2020, SMPTE ST.2084.
Keywords: IEC TS 62341-6-5:2019, OLED displays, dynamic range, peak luminance, black level, local contrast, luminance meter, spectroradiometer, measurement conditions.