IEC 61747-40-1:2013

Overview

IEC 61747-40-1:2013 is an international standard published by the International Electrotechnical Commission (IEC) that establishes mechanical testing guidelines for cover glass used in electronic flat panel displays on mobile devices. This document is an integral part of the IEC 61747 series and focuses specifically on evaluating the mechanical performance parameters of display cover glass, including strength and damage resistance. The guidelines are intended to support the development and quality assessment of cover glass components that protect mobile device displays from routine use, transport, and accidental impacts.

Key Topics

The main focus areas addressed in IEC 61747-40-1:2013 include:

• Mechanical Properties Assessment
  • Guidelines for selecting and performing mechanical tests relevant to cover glass, such as edge strength and surface strength evaluations.
• Damage Resistance
  • Recommendations for evaluating the resistance of cover glass to common damage mechanisms such as scratching, abrasion, indentation, and impact.
• Test Conditions
  • Standardized environmental conditions for performing mechanical tests, ensuring repeatability and comparability of results.
• Test Method Selection
  • Advice on matching test methods to specific performance attributes and application needs.
• Measurement and Reporting
  • Emphasis on calibration, traceability, and proper documentation of test results, especially when dealing with strengthened glasses (either chemically or thermally treated).

Applications

Electronic devices are increasingly reliant on robust and reliable display components. The guidelines set forth in IEC 61747-40-1:2013 are widely applicable in:

• Mobile Device Manufacturing
  • The standard is central to the development, selection, and quality assurance of cover glass for smartphones, tablets, and other portable electronics.
• Materials Engineering
  • Used by material scientists and engineers to compare alternative cover glass materials or strengthening processes.
• Product Testing and Certification
  • Supports test laboratories and certification bodies in assessing compliance with internationally recognized methods for mechanical durability and reliability.
• R&D and Procurement
  • Guides product designers and supply chain stakeholders in specifying performance requirements for cover glass components.

Key benefits of implementing IEC 61747-40-1:2013 include improved product reliability, enhanced consumer confidence, and reduced warranty costs due to display failures.

Related Standards

IEC 61747-40-1:2013 is part of a broader family of standards related to display devices and mechanical testing. Relevant standards include:

• IEC 61747-1: Liquid crystal and solid-state display devices - Part 1: Generic specification
• IEC 61747-5: Liquid crystal and solid-state display devices - Part 5: Environmental, endurance and mechanical test methods
• IEC 61747-5-3: Liquid crystal display devices - Part 5-3: Environmental, endurance and mechanical test methods - Glass strength and reliability
• ASTM C 158: Standard Test Methods for Strength of Glass by Flexure (modulus of rupture)
• ASTM C 1499: Standard Test Method for Monotonic Equibiaxial Flexural Strength of Advanced Ceramics at Ambient Temperature

These related documents provide further technical details on test procedures, performance criteria, and the evaluation of display and cover glass components.

Practical Value

Applying the guidelines in IEC 61747-40-1:2013 helps manufacturers and testing organizations to ensure that cover glass on mobile devices meets consistently high standards for strength and damage resistance. Through standardized testing-covering edge and surface strength, scratch resistance, indentation resistance, and impact resistance-manufacturers can benchmark their products, optimize material selection, and substantiate durability claims. This standard is especially relevant as consumers demand increasingly robust and scratch-resistant displays in portable electronics, making it essential for maintaining competitive advantage and regulatory compliance in the global market.