IEC 62715-2:2022

Overview

IEC 62715-2:2022 - Flexible display devices Part 2: Essential ratings and characteristics - defines the essential ratings and characteristics of flexible display modules. Part of the IEC 62715 series, this international standard (Edition 1.0, 2022-10) covers the information manufacturers, testers and integrators must provide about flexible displays (for example flexible OLED, flexible LCD and other flexible modules) including electrical, optical and mechanical limits and performance descriptors.

Key topics and requirements

The standard specifies the minimum set of data and characteristics shown in defined tables and clauses, including:

• Types and construction

  • Flexible module types: flexible OLED, flexible LCD and other technologies; mechanical forms such as bending, foldable and rollable modules.
  • Structure: panel, electronics, cover film/glass, bezel, substrate and structural materials.

• Outline and connectivity

  • Material descriptions, outline drawings and dimensions (overall, bezel, active area, flexible region).
  • Connector and pin layouts, flex cable or connection pin details.

• Limiting values (absolute maximum rating system)

  • Operating and storage temperature and humidity ranges.
  • Maximum supply voltages and input signal voltage limits.

• Electrical and optical characteristics (referenced in Table 2)

  • Supply and input voltages, operating and frame frequencies, supply currents and power consumption.
  • Optical metrics: dark-room and ambient contrast ratios, luminance and luminance uniformity, colour/chromaticity, viewing-angle definition, transmittance/reflectance where applicable.
  • Lifetime and image-sticking measures for flexible OLED/electronic paper (referenced measurement methods).

• Mechanical characteristics (referenced in Table 3)

  • Cyclic/static bending radius and cycles, rolling radius, torsion angle/number, tension stress.
  • Impact and hardness tests: ball-drop height/weight, hitting force, pendulum side impact, scratch/hardness loads.

• Supplementary information

  • Timing/timing diagrams, voltage sequencing, temperature-dependent operating ranges, handling and installation guidance, ESD precautions and safety information.

Practical applications and who uses it

IEC 62715-2 is intended for:

• Display manufacturers and module designers specifying product datasheets and ensuring compatibility.
• Test laboratories and QA teams defining pass/fail criteria for electrical, optical and mechanical tests.
• OEMs, integrators and procurement specialists comparing module specifications for consumer electronics, wearables, automotive displays and foldable devices.
• Compliance and reliability engineers preparing documentation and supporting certification.

Providing standardized ratings and characteristics helps reduce design risk, enables consistent supplier communication and supports reliable product integration of flexible display modules.

Related standards

• IEC 62715-1-1 (Terminology and letter symbols)
• IEC 62715-5-1 (Measuring methods of optical performance)
• IEC 62715-6-1 (Mechanical test methods - deformation)
• IEC 62715-6-3 (Mechanical test methods - impact and hardness)
• IEC 62341-5-3 and IEC 62679-3-1 (OLED/e-paper image-sticking and life measurement methods)

Keywords: IEC 62715-2:2022, flexible display modules, flexible OLED, flexible LCD, ratings and characteristics, limiting values, electrical characteristics, mechanical characteristics, optical performance.