IEC 62341-6-1:2025

Overview

IEC 62341-6-1:2025 - part of the IEC series for OLED displays - defines standard measurement conditions and measuring methods of optical and electro‑optical parameters for organic light emitting diode displays. The fourth edition is a technical revision that replaces the 2022 edition. Methods (except for power consumption) apply to unbounded input signals measured in flat regions of the display in a dark room. This standard is essential for consistent, repeatable measurement of luminance, colour, uniformity, chromaticity, gamut and related electro‑optical metrics.

Key topics and requirements

• Standard measuring conditions: environmental, dark‑room and setup requirements to ensure consistent optical and electro‑optical measurements.
• Test patterns and signal loading: definition of standard APL (average picture level) RGBCMY patterns; the 2025 edition modifies the standard medium APL RGBCMY pattern and adds variable signal loading RGBCMY patterns to capture real‑world behaviour.
• Luminance and colour measurement: procedures for primary luminance, chromaticity, white correlated colour temperature and uniformity at defined positions across the active area.
• Chromaticity gamut area and colour gamut volume: revised methods to quantify a display’s colour reproduction envelope (e.g., in CIE 1931 and CIELAB representations).
• Contrast and dark‑room contrast ratio: methods to measure on/off contrast under controlled conditions.
• Power consumption: dedicated methods for measuring module power with and without embedded signal decoding processes.
• Ancillary methods and annexes: response time for passive matrices, luminance current efficiency, CCT calculation methods, and guidance for modern colour‑managed displays.

Practical applications

• Manufacturers use IEC 62341-6-1:2025 for product development, panel qualification and quality control of OLED displays.
• Test laboratories and compliance/verification bodies apply the standard to produce repeatable, comparable measurement reports for customers and regulators.
• R&D teams use the specified test patterns (APL, RGBCMY) and signal‑loading procedures to evaluate real‑world performance impacts such as power vs. luminance and colour shift across loading conditions.
• System integrators and OEMs rely on the standard to compare modules, validate colour gamut claims and ensure end‑product visual performance.

Related standards

• This document is Part 6‑1 of the IEC 62341 series. For complete conformance and broader system considerations, consult other parts of the IEC 62341 series covering electrical, mechanical and reliability aspects of OLED modules.

Keywords: IEC 62341-6-1:2025, OLED displays, measuring methods, optical parameters, electro‑optical parameters, APL, RGBCMY, chromaticity gamut, colour gamut volume, luminance, power consumption.