IEC 61747-10-2:2014

Overview

IEC 61747-10-2:2014 defines environmental and endurance test methods for liquid crystal display (LCD) devices (cells and modules). It establishes uniform preferred test procedures and stress levels to judge environmental performance, aligning where possible with the IEC 60068 environmental testing series. This edition (2014) adds example test conditions and updates references, and replaces parts of the previous IEC 61747-5 edition.

Key topics and technical requirements

• Scope and purpose
  • Standardizes environmental test methods for LCDs to evaluate durability and reliability under defined stress conditions.
  • In case of conflict, a specific relevant specification takes precedence.
• Standard test atmosphere
  • Default measurement conditions: 15 °C to 35 °C, 25 % to 85 % RH (as applicable), air pressure 86–106 kPa, and absolute humidity limits.
• Temperature tests
  • Rapid change (thermal shock) - two‑chamber method (Na): selectable low/high temperatures from defined tables (e.g., −50 °C to +100 °C entries), exposure durations (10 min–3 h), transition times (examples: 2–3 min, 20–30 s, <10 s), and cycle counts (e.g., 5–200).
  • Specified change rate (temperature cycling) - one‑chamber method (Nb): controlled ramp rates (e.g., 1, 3, 5 °C/min ± tolerances) between chosen temp limits.
• Storage and pressure
  • Storage at high/low temperatures, and low air pressure tests to address altitude/packaging concerns.
• Humidity and composite tests
  • Damp heat (steady-state and cyclic) and composite temperature/humidity cyclic tests to assess moisture tolerance and condensation effects.
• Radiation and electrical stresses
  • Light exposure tests (simulated solar and indoor daylight) and ESD tests are included to examine photochemical and electrostatic endurance.
• Measurements
  • Defined initial and final inspections: external visual checks and mechanical, electrical and optical tests as prescribed in the relevant specification.

Applications and users

• Who uses it
  • LCD and display module manufacturers, component suppliers, reliability/test laboratories, OEMs, procurement and quality assurance teams, and certification bodies.
• Practical value
  • Helps write product specifications, design for robustness, compare suppliers, plan validation test sequences, and support warranty and field‑failure analysis.
  • Useful for establishing repeatable LCD endurance testing, thermal shock, humidity resistance and light-aging evaluation.

Related standards

• IEC 60068 (Environmental testing series)
• Other parts of IEC 61747 (LCD devices series)
• IEC 60747 / IEC 60748-1 (semiconductor and IC test references)
• ISO 18909 (image stability - referenced)

Keywords: IEC 61747-10-2, liquid crystal display, LCD test methods, environmental tests, thermal shock, damp heat, temperature cycling, IEC 60068, display reliability.