IEC 61747-30-3:2019

Overview

IEC 61747-30-3:2019 is an IEC international standard that specifies measuring methods for motion artefact measurement of transmissive active matrix (TFT) liquid crystal display (LCD) modules. The standard defines procedures for quality evaluation of motion performance, characterizes moving‑image artefacts (for example motion blur and edge blur), and provides both direct and indirect measurement methods to quantify these effects. It applies specifically to transmissive TFT LCDs and includes updated test positions, revised measuring conditions, and new requirements (for example for high‑speed camera use).

Key technical topics and requirements

• Scope: Applies to transmissive-type active matrix LCD modules (TFT LCDs).
• Motion artefacts defined: Motion induced edge profile, edge blur, perceived blurred edge time (PBET), motion picture response curve (MPRC), motion contrast degradation (MCD) and related metrics.
• Measurement approaches:
  • Direct methods: Pursuit camera systems and edge‑blur test patterns to measure blurred edge width/time with eye-tracking emulation.
  • Indirect methods: Temporal step-response measurements and high‑speed camera capture to derive motion picture response curves and moving‑picture response time (MPRT).
• Standard measuring conditions: Environmental conditions (25 °C ±3 °C; 25–85 % RH; 86–106 kPa) and dark‑room illuminance (< 1 lx) are specified for repeatable testing.
• Instrumentation and analysis: Includes requirements for high‑speed cameras, methods to calculate PBET and standard deviation of the eye’s line‑spread function, dynamic MTF (DMTF) considerations, and reporting formats.
• Reporting: Test reports must document measurement conditions, device under test (DUT) configuration, test positions/areas, and measured metrics; annexes describe subjective test methods and motion contrast degradation analysis.

Practical applications and users

This standard is intended for:

• Display manufacturers evaluating and optimizing LCD motion performance (e.g., response time tuning, motion enhancement validation).
• Quality assurance and test labs conducting objective motion artefact measurements and creating consistent, repeatable test reports.
• OEMs and system integrators specifying display performance for consumer electronics, automotive, medical, and professional applications where motion rendering is critical.
• R&D teams comparing technologies, validating motion‑enhancement algorithms, and studying tradeoffs between response time, hold‑type behavior, and perceived blur.

Using IEC 61747-30-3 helps ensure consistent, comparable measurements of motion artefacts and supports product claims and engineering decisions related to motion blur, MPRT, PBET, and DMTF.

Related standards

• IEC 61747‑30‑1: Measuring methods for transmissive type LCD modules (normative reference).
• Other parts of the IEC 61747 series covering LCD device measurements and test methods.
• ISO 11664‑4 (Colourimetry) referenced for color space considerations in some measurements.

Keywords: IEC 61747-30-3, motion artefact measurement, active matrix LCD, TFT LCD, motion blur, PBET, MPRT, motion picture response curve, high speed camera, display testing.